[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
31	# include <sys/socket.h>	86	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
		116	typedef SV SV8; /* byte-sv, used for argument-checking */
		117	typedef int aio_rfd; /* read file desriptor */
		118	typedef int aio_wfd; /* write file descriptor */
		119
		120	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
		121
		122	#define EIO_REQ_MEMBERS \
		123	SV *callback; \
		124	SV sv1, sv2; \
		125	SV sv3, sv4; \
		126	STRLEN stroffset; \
		127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
		130
		131	#include "libeio/eio.h"
		132
		133	static int req_invoke (eio_req *req);
		134	#define EIO_FINISH(req) req_invoke (req)
		135	static void req_destroy (eio_req *grp);
		136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
34	# else	151	# else
35	# error sendfile support requested but not available	152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	153	# endif
37	#endif	154	#endif
38		155
39	/* used for struct dirent, AIX doesn't provide it */	156	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	157	/* also provides const_iv_ and const_niv_ macros for them */
41	# define NAME_MAX 4096	158	#include "def0.h"
42	#endif
43		159
44	#if __ia64	160	#ifndef makedev
45	# define STACKSIZE 65536	161	# define makedev(maj,min) (((maj) << 8) \| (min))
		162	#endif
		163	#ifndef major
		164	# define major(dev) ((dev) >> 8)
		165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
		169
		170	#if PAGESIZE <= 0
		171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
		173
		174	/*****************************************************************************/
		175
		176	static void
		177	fiemap (eio_req *req)
		178	{
		179	req->result = -1;
		180
		181	#if HAVE_FIEMAP
		182	/* assume some c99 */
		183	struct fiemap *fiemap = 0;
		184	size_t end_offset;
		185	int count = req->int3;
		186
		187	req->flags \|= EIO_FLAG_PTR1_FREE;
		188
		189	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		190	/* increase in 3.5kb steps */
		191	if (count < 0)
		192	count = 8;
		193
		194	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		195	errno = ENOMEM;
		196	if (!fiemap)
		197	return;
		198
		199	req->ptr1 = fiemap;
		200
		201	fiemap->fm_start = req->offs;
		202	fiemap->fm_length = req->size;
		203	fiemap->fm_flags = req->int2;
		204	fiemap->fm_extent_count = count;
		205
		206	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		207	return;
		208
		209	if (req->int3 >= 0 /* not autosizing */
		210	\|\| !fiemap->fm_mapped_extents /* no more extents */
		211	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		212	goto done;
		213
		214	/* else we have to loop -
		215	* it would be tempting (actually I tried that first) to just query the
		216	* number of extents needed, but linux often feels like not returning all
		217	* extents, without telling us it left any out. this complicates
		218	* this quite a bit.
		219	*/
		220
		221	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		222
		223	for (;;)
		224	{
		225	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		226	char scratch[3072];
		227	struct fiemap incmap = (struct fiemap )scratch;
		228
		229	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		230	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		231	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		232	incmap->fm_flags = fiemap->fm_flags;
		233	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		234
		235	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		236	return;
		237
		238	if (!incmap->fm_mapped_extents)
		239	goto done;
		240
		241	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		242	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		243	errno = ENOMEM;
		244	if (!fiemap)
		245	return;
		246
		247	req->ptr1 = fiemap;
		248
		249	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		250	{
		251	struct fiemap_extent *e = incmap->fm_extents + count;
		252
		253	if (e->fe_logical + e->fe_length >= end_offset)
		254	goto done;
		255
		256	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		257
		258	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		259	goto done;
		260
		261	}
		262	}
		263
		264	done:
		265	req->result = 0;
		266
46	#else	267	#else
47	# define STACKSIZE 8192	268	errno = ENOSYS;
48	#endif	269	#endif
		270	}
		271
		272	/*****************************************************************************/
49		273
50	enum {	274	enum {
51	REQ_QUIT,	275	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};	276	};
63		277
64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66
67	typedef struct aio_cb
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb grp, grp_prev, grp_next, grp_first;
72
73	SV self; / the perl counterpart of this request, if any */
74
75	SV data, callback;
76	SV fh, fh2;
77	void dataptr, data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	278	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	279	typedef eio_req *aio_req_ornot;
		280	typedef eio_wd aio_wd;
93		281
94	static int started, wanted;	282	static SV *on_next_submit;
95	static volatile int nreqs;	283	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	284	static int max_outstanding;
97	static int respipe [2];
98		285
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	286	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		287
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	288	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	289	static void req_cancel (aio_req req);
		290
		291	static void
		292	want_poll (void)
		293	{
		294	/* write a dummy byte to the pipe so fh becomes ready */
		295	s_epipe_signal (&respipe);
		296	}
		297
		298	static void
		299	done_poll (void)
		300	{
		301	/* read any signals sent by the worker threads */
		302	s_epipe_drain (&respipe);
		303	}
107		304
108	/* must be called at most once */	305	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	306	static SV *
		307	req_sv (aio_req req, HV *stash)
110	{	308	{
111	if (!req->self)	309	if (!req->self)
112	{	310	{
113	req->self = (SV *)newHV ();	311	req->self = (SV *)newHV ();
114	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	312	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
115	}	313	}
116		314
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	315	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
118	}	316	}
119		317
120	static aio_req SvAIO_REQ (SV *sv)	318	static SV *
		319	newSVaio_wd (aio_wd wd)
121	{	320	{
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	321	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		322	}
		323
		324	static aio_req
		325	SvAIO_REQ (SV *sv)
		326	{
		327	MAGIC *mg;
		328
		329	if (!SvROK (sv)
		330	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		331	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		332	&& SvSTASH (SvRV (sv)) != aio_req_stash
		333	&& !sv_derived_from (sv, "IO::AIO::REQ")))
123	croak ("object of class " AIO_REQ_KLASS " expected");	334	croak ("object of class IO::AIO::REQ expected");
124		335
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	336	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		337
127	return mg ? (aio_req)mg->mg_ptr : 0;	338	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	339	}
129		340
		341	static aio_wd
		342	SvAIO_WD (SV *sv)
		343	{
		344	if (!SvROK (sv)
		345	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		346	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		347	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		348
		349	return (aio_wd)(long)SvIVX (SvRV (sv));
		350	}
		351
		352	static SV *
		353	newmortalFH (int fd, int flags)
		354	{
		355	if (fd < 0)
		356	return &PL_sv_undef;
		357
		358	GV gv = (GV )sv_newmortal ();
		359	char sym[64];
		360	int symlen;
		361
		362	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		363	gv_init (gv, aio_stash, sym, symlen, 0);
		364
		365	symlen = snprintf (
		366	sym,
		367	sizeof (sym),
		368	"%s&=%d",
		369	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		370	fd
		371	);
		372
		373	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		374	? (SV *)gv : &PL_sv_undef;
		375	}
		376
		377	static void
130	static void aio_grp_feed (aio_req grp)	378	aio_grp_feed (aio_req grp)
131	{	379	{
132	while (grp->length < grp->fd2)	380	if (grp->sv2 && SvOK (grp->sv2))
133	{	381	{
134	int old_len = grp->length;	382	dSP;
135		383
136	if (grp->fh2 && SvOK (grp->fh2))	384	ENTER;
		385	SAVETMPS;
		386	PUSHMARK (SP);
		387	XPUSHs (req_sv (grp, aio_grp_stash));
		388	PUTBACK;
		389	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
		390	SPAGAIN;
		391	FREETMPS;
		392	LEAVE;
		393	}
		394	}
		395
		396	static void
		397	req_submit (eio_req *req)
		398	{
		399	eio_submit (req);
		400
		401	if (expect_false (on_next_submit))
		402	{
		403	dSP;
		404	SV *cb = sv_2mortal (on_next_submit);
		405
		406	on_next_submit = 0;
		407
		408	PUSHMARK (SP);
		409	PUTBACK;
		410	call_sv (cb, G_DISCARD \| G_EVAL);
		411	}
		412	}
		413
		414	static int
		415	req_invoke (eio_req *req)
		416	{
		417	if (req->flags & FLAG_SV2_RO_OFF)
		418	SvREADONLY_off (req->sv2);
		419
		420	if (!EIO_CANCELLED (req) && req->callback)
		421	{
		422	dSP;
		423	static SV sv_result_cache; / caches the result integer SV */
		424	SV *sv_result;
		425
		426	ENTER;
		427	SAVETMPS;
		428	PUSHMARK (SP);
		429	EXTEND (SP, 1);
		430
		431	/* do not recreate the result IV from scratch each time */
		432	if (expect_true (sv_result_cache))
137	{	433	{
138	dSP;	434	sv_result = sv_result_cache; sv_result_cache = 0;
139		435	SvIV_set (sv_result, req->result);
140	ENTER;	436	SvIOK_only (sv_result);
141	SAVETMPS;
142	PUSHMARK (SP);
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144	PUTBACK;
145	call_sv (grp->fh2, G_VOID \| G_EVAL);
146	SPAGAIN;
147	FREETMPS;
148	LEAVE;
149	}	437	}
150		438	else
151	/* stop if no progress has been made */
152	if (old_len == grp->length)
153	{	439	{
154	SvREFCNT_dec (grp->fh2);	440	sv_result = newSViv (req->result);
155	grp->fh2 = 0;	441	SvREADONLY_on (sv_result);
156	break;
157	}	442	}
		443
		444	switch (req->type)
		445	{
		446	case EIO_WD_OPEN:
		447	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		448	break;
		449
		450	case EIO_READDIR:
		451	{
		452	SV *rv = &PL_sv_undef;
		453
		454	if (req->result >= 0)
		455	{
		456	int i;
		457	char names = (char )req->ptr2;
		458	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
		459	AV *av = newAV ();
		460
		461	av_extend (av, req->result - 1);
		462
		463	for (i = 0; i < req->result; ++i)
		464	{
		465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		468
		469	if (req->int1 & EIO_READDIR_CUSTOM2)
		470	{
		471	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		472	AV *avent = newAV ();
		473
		474	av_extend (avent, 2);
		475
		476	if (!sv_type [ent->type])
		477	{
		478	sv_type [ent->type] = newSViv (ent->type);
		479	SvREADONLY_on (sv_type [ent->type]);
		480	}
		481
		482	av_store (avent, 0, namesv);
		483	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		484	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		485
		486	av_store (av, i, newRV_noinc ((SV *)avent));
		487	}
		488	else
		489	av_store (av, i, namesv);
		490
		491	++ent;
		492	}
		493	else
		494	{
		495	SV *name = newSVpv (names, 0);
		496	av_store (av, i, name);
		497	names += SvCUR (name) + 1;
		498	}
		499	}
		500
		501	rv = sv_2mortal (newRV_noinc ((SV *)av));
		502	}
		503
		504	PUSHs (rv);
		505
		506	if (req->int1 & EIO_READDIR_CUSTOM1)
		507	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
		508	}
		509	break;
		510
		511	case EIO_OPEN:
		512	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR)));
		513	break;
		514
		515	case EIO_STATVFS:
		516	case EIO_FSTATVFS:
		517	{
		518	SV *rv = &PL_sv_undef;
		519
		520	#ifndef _WIN32
		521	if (req->result >= 0)
		522	{
		523	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		524	HV *hv = newHV ();
		525	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		526	* chooses to make it a struct.
		527	*/
		528	unsigned long fsid = 0;
		529	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		530
		531	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		532
		533	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		534	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		535	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		536	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		537	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		538	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		539	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		540	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		541	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		542	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		543	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		544	}
		545	#endif
		546
		547	PUSHs (rv);
		548	}
		549
		550	break;
		551
		552	case EIO_GROUP:
		553	req->int1 = 2; /* mark group as finished */
		554
		555	if (req->sv1)
		556	{
		557	int i;
		558	AV av = (AV )req->sv1;
		559
		560	EXTEND (SP, AvFILL (av) + 1);
		561	for (i = 0; i <= AvFILL (av); ++i)
		562	PUSHs (*av_fetch (av, i, 0));
		563	}
		564	break;
		565
		566	case EIO_NOP:
		567	case EIO_BUSY:
		568	break;
		569
		570	case EIO_READLINK:
		571	case EIO_REALPATH:
		572	if (req->result > 0)
		573	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		574	break;
		575
		576	case EIO_STAT:
		577	case EIO_LSTAT:
		578	case EIO_FSTAT:
		579	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		580
		581	if (!(PL_laststatval = req->result))
		582	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		583	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		584
		585	PUSHs (sv_result);
		586	break;
		587
		588	case EIO_SEEK:
		589	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		590	break;
		591
		592	case EIO_READ:
		593	{
		594	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		595	*SvEND (req->sv2) = 0;
		596	SvPOK_only (req->sv2);
		597	SvSETMAGIC (req->sv2);
		598	PUSHs (sv_result);
		599	}
		600	break;
		601
		602	case EIO_CUSTOM:
		603	if (req->feed == fiemap)
		604	{
		605	#if HAVE_FIEMAP
		606	if (!req->result)
		607	{
		608	struct fiemap fiemap = (struct fiemap )req->ptr1;
		609
		610	if (fiemap->fm_extent_count)
		611	{
		612	AV *av = newAV ();
		613	int i;
		614
		615	while (fiemap->fm_mapped_extents)
		616	{
		617	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		618	AV *ext_av = newAV ();
		619
		620	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		621	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		622	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		623	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		624
		625	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		626	}
		627
		628	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		629	}
		630	else
		631	{
		632	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		633	PUSHs (sv_result);
		634	}
		635	}
		636	#endif
		637	}
		638	else
		639	PUSHs (sv_result);
		640	break;
		641
		642	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		643	if (req->result > 0)
		644	SvIV_set (sv_result, 0);
		645	/* FALLTHROUGH */
		646
		647	default:
		648	PUSHs (sv_result);
		649	break;
		650	}
		651
		652	errno = req->errorno;
		653
		654	PUTBACK;
		655	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
		656	SPAGAIN;
		657
		658	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		659	SvREFCNT_dec (sv_result);
		660	else
		661	sv_result_cache = sv_result;
		662
		663	FREETMPS;
		664	LEAVE;
		665
		666	PUTBACK;
158	}	667	}
159	}
160		668
161	static void poll_wait ()	669	return !!SvTRUE (ERRSV);
162	{
163	if (nreqs && !ress)
164	{
165	fd_set rfd;
166	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);
168
169	select (respipe [0] + 1, &rfd, 0, 0, 0);
170	}
171	}	670	}
172		671
173	static void req_invoke (aio_req req)	672	static void
		673	req_destroy (aio_req req)
174	{	674	{
175	dSP;
176	int errorno = errno;
177
178	if (req->cancelled \|\| !SvOK (req->callback))
179	return;
180
181	errno = req->errorno;
182
183	ENTER;
184	SAVETMPS;
185	PUSHMARK (SP);
186	EXTEND (SP, 1);
187
188	switch (req->type)
189	{
190	case REQ_READDIR:
191	{
192	SV *rv = &PL_sv_undef;
193
194	if (req->result >= 0)
195	{
196	char *buf = req->data2ptr;
197	AV *av = newAV ();
198
199	while (req->result)
200	{
201	SV *sv = newSVpv (buf, 0);
202
203	av_push (av, sv);
204	buf += SvCUR (sv) + 1;
205	req->result--;
206	}
207
208	rv = sv_2mortal (newRV_noinc ((SV *)av));
209	}
210
211	PUSHs (rv);
212	}
213	break;
214
215	case REQ_OPEN:
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
223	SPAGAIN;
224
225	fh = SvREFCNT_inc (POPs);
226
227	PUSHMARK (SP);
228	XPUSHs (sv_2mortal (fh));
229	}
230	break;
231
232	case REQ_GROUP:
233	req->fd = 2; /* mark group as finished */
234
235	if (req->data)
236	{
237	int i;
238	AV av = (AV )req->data;
239
240	EXTEND (SP, AvFILL (av) + 1);
241	for (i = 0; i <= AvFILL (av); ++i)
242	PUSHs (*av_fetch (av, i, 0));
243	}
244	break;
245
246	case REQ_SLEEP:
247	break;
248
249	default:
250	PUSHs (sv_2mortal (newSViv (req->result)));
251	break;
252	}
253
254
255	PUTBACK;
256	call_sv (req->callback, G_VOID \| G_EVAL);
257	SPAGAIN;
258
259	if (SvTRUE (ERRSV))
260	{
261	req_free (req);
262	croak (0);
263	}
264
265	FREETMPS;
266	LEAVE;
267
268	errno = errorno;
269	}
270
271	static void req_free (aio_req req)
272	{
273	if (req->grp)
274	{
275	aio_req grp = req->grp;
276
277	/* unlink request */
278	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280
281	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;
283
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);
288
289	/* finish, if done */
290	if (!grp->length && grp->fd)
291	{
292	req_invoke (grp);
293	req_free (grp);
294	}
295	}
296
297	if (req->self)	675	if (req->self)
298	{	676	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	677	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	678	SvREFCNT_dec (req->self);
301	}	679	}
302		680
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	681	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	682	SvREFCNT_dec (req->sv2);
		683	SvREFCNT_dec (req->sv3);
		684	SvREFCNT_dec (req->sv4);
306	SvREFCNT_dec (req->callback);	685	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308		686
309	if (req->type == REQ_READDIR && req->result >= 0)
310	free (req->data2ptr);
311
312	Safefree (req);	687	free (req);
313	}	688	}
314		689
315	static void req_cancel (aio_req req)	690	static void
		691	req_cancel_subs (aio_req grp)
316	{	692	{
317	req->cancelled = 1;
318
319	if (req->type == REQ_GROUP)	693	if (grp->type != EIO_GROUP)
		694	return;
		695
		696	SvREFCNT_dec (grp->sv2);
		697	grp->sv2 = 0;
		698
		699	eio_grp_cancel (grp);
		700	}
		701
		702	static void ecb_cold
		703	create_respipe (void)
		704	{
		705	if (s_epipe_renew (&respipe))
		706	croak ("IO::AIO: unable to initialize result pipe");
		707	}
		708
		709	static void
		710	poll_wait (void)
		711	{
		712	while (eio_nreqs ())
320	{	713	{
321	aio_req sub;	714	int size;
322		715
323	for (sub = req->grp_first; sub; sub = sub->grp_next)	716	X_LOCK (EIO_POOL->reslock);
324	req_cancel (sub);	717	size = EIO_POOL->res_queue.size;
		718	X_UNLOCK (EIO_POOL->reslock);
		719
		720	if (size)
		721	return;
		722
		723	etp_maybe_start_thread (EIO_POOL);
		724
		725	s_epipe_wait (&respipe);
325	}	726	}
326	}	727	}
327		728
328	static int poll_cb ()	729	static int
		730	poll_cb (void)
329	{	731	{
330	dSP;
331	int count = 0;
332	int do_croak = 0;
333	aio_req req;
334
335	for (;;)	732	for (;;)
336	{	733	{
337	pthread_mutex_lock (&reslock);	734	int res = eio_poll ();
338	req = ress;
339		735
340	if (req)	736	if (res > 0)
		737	croak (0);
		738
		739	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		740	return res;
		741
		742	poll_wait ();
		743	}
		744	}
		745
		746	static void ecb_cold
		747	reinit (void)
		748	{
		749	create_respipe ();
		750
		751	if (eio_init (want_poll, done_poll) < 0)
		752	croak ("IO::AIO: unable to initialise eio library");
		753	}
		754
		755	/*****************************************************************************/
		756
		757	#if !_POSIX_MAPPED_FILES
		758	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		759	# define munmap(addr,length) EIO_ENOSYS ()
		760	#endif
		761
		762	#if !_POSIX_MEMORY_PROTECTION
		763	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		764	#endif
		765
		766	#define MMAP_MAGIC PERL_MAGIC_ext
		767
		768	static int ecb_cold
		769	mmap_free (pTHX_ SV sv, MAGIC mg)
		770	{
		771	int old_errno = errno;
		772	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		773	errno = old_errno;
		774
		775	mg->mg_obj = 0; /* just in case */
		776
		777	SvREADONLY_off (sv);
		778
		779	if (SvPVX (sv) != mg->mg_ptr)
		780	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		781
		782	SvCUR_set (sv, 0);
		783	SvPVX (sv) = 0;
		784	SvOK_off (sv);
		785
		786	return 0;
		787	}
		788
		789	static MGVTBL mmap_vtbl = {
		790	0, 0, 0, 0, mmap_free
		791	};
		792
		793	/*****************************************************************************/
		794
		795	static SV *
		796	get_cb (SV *cb_sv)
		797	{
		798	SvGETMAGIC (cb_sv);
		799	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		800	}
		801
		802	static aio_req ecb_noinline
		803	dreq (SV *callback)
		804	{
		805	SV *cb_cv;
		806	aio_req req;
		807	int req_pri = next_pri;
		808	next_pri = EIO_PRI_DEFAULT;
		809
		810	cb_cv = get_cb (callback);
		811
		812	req = calloc (sizeof (*req), 1);
		813	if (!req)
		814	croak ("out of memory during eio_req allocation");
		815
		816	req->callback = SvREFCNT_inc (cb_cv);
		817	req->pri = req_pri;
		818
		819	return req;
		820	}
		821
		822	#define dREQ \
		823	aio_req req = dreq (callback); \
		824
		825	#define REQ_SEND \
		826	PUTBACK; \
		827	req_submit (req); \
		828	SPAGAIN; \
		829	\
		830	if (GIMME_V != G_VOID) \
		831	XPUSHs (req_sv (req, aio_req_stash));
		832
		833	ecb_inline void
		834	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		835	{
		836	if (expect_false (SvROK (path)))
		837	{
		838	SV *rv = SvRV (path);
		839	SV *wdob;
		840
		841	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
341	{	842	{
342	ress = req->next;	843	path = AvARRAY (rv)[1];
		844	wdob = AvARRAY (rv)[0];
343		845
344	if (!ress)	846	if (SvOK (wdob))
345	{	847	{
346	/* read any signals sent by the worker threads */	848	*wd = SvAIO_WD (wdob);
347	char buf [32];	849	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
348	while (read (respipe [0], buf, 32) == 32)
349	;
350
351	rese = 0;
352	}	850	}
		851	else
		852	*wd = EIO_INVALID_WD;
353	}	853	}
354		854	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
355	pthread_mutex_unlock (&reslock);
356
357	if (!req)
358	break;
359
360	nreqs--;
361
362	if (req->type == REQ_QUIT)
363	started--;
364	else if (req->type == REQ_GROUP && req->length)
365	{	855	{
366	req->fd = 1; /* mark request as delayed */	856	*wd = (aio_wd)(long)SvIVX (rv);
367	continue;	857	*wdsv = SvREFCNT_inc_NN (rv);
		858	*ptr = ".";
		859	return; /* path set to "." */
368	}	860	}
369	else	861	else
370	{	862	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
371	if (req->type == REQ_READ)
372	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
373
374	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
375	SvREADONLY_off (req->data);
376
377	if (req->statdata)
378	{
379	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
380	PL_laststatval = req->result;
381	PL_statcache = *(req->statdata);
382	}
383
384	req_invoke (req);
385
386	count++;
387	}
388
389	req_free (req);
390	}	863	}
391		864
392	return count;	865	*pathsv = newSVsv (path);
		866	ptr = SvPVbyte_nolen (pathsv);
393	}	867	}
394		868
395	static void aio_proc(void arg);	869	static void ecb_noinline
396		870	req_set_path1 (aio_req req, SV *path)
397	static void start_thread (void)
398	{	871	{
399	sigset_t fullsigset, oldsigset;	872	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
400	pthread_t tid;
401	pthread_attr_t attr;
402
403	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406
407	sigfillset (&fullsigset);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
411	started++;
412
413	sigprocmask (SIG_SETMASK, &oldsigset, 0);
414	}	873	}
415		874
416	static void req_send (aio_req req)	875	static void ecb_noinline
		876	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
417	{	877	{
418	while (started < wanted && nreqs >= started)	878	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
419	start_thread ();
420		879
421	nreqs++;	880	switch (SvTYPE (rv))
422
423	pthread_mutex_lock (&reqlock);
424
425	req->next = 0;
426
427	if (reqe)
428	{	881	{
429	reqe->next = req;	882	case SVt_PVIO:
430	reqe = req;	883	case SVt_PVLV:
		884	case SVt_PVGV:
		885	req->type = type_fh;
		886	req->sv1 = newSVsv (fh_or_path);
		887	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		888	break;
		889
		890	default:
		891	req->type = type_path;
		892	req_set_path1 (req, fh_or_path);
		893	break;
431	}	894	}
432	else
433	reqe = reqs = req;
434
435	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);
437
438	if (nreqs > max_outstanding)
439	for (;;)
440	{
441	poll_cb ();
442
443	if (nreqs <= max_outstanding)
444	break;
445
446	poll_wait ();
447	}
448	}	895	}
449		896
450	static void end_thread (void)	897	XS(boot_IO__AIO) ecb_cold;
451	{
452	aio_req req;
453	Newz (0, req, 1, aio_cb);
454	req->type = REQ_QUIT;
455		898
456	req_send (req);	899	MODULE = IO::AIO PACKAGE = IO::AIO
457	}
458		900
459	static void min_parallel (int nthreads)	901	PROTOTYPES: ENABLE
460	{
461	if (wanted < nthreads)
462	wanted = nthreads;
463	}
464		902
465	static void max_parallel (int nthreads)	903	BOOT:
466	{	904	{
467	int cur = started;	905	static const struct {
		906	const char *name;
		907	IV iv;
		908	} *civ, const_iv[] = {
		909	# define const_niv(name, value) { # name, (IV) value },
		910	# define const_iv(name) { # name, (IV) name },
		911	# define const_eio(name) { # name, (IV) EIO_ ## name },
468		912
469	if (wanted > nthreads)	913	/* you have to re-run ./gendef0 after adding/removing any constants here */
470	wanted = nthreads;	914	/* the first block can be undef if missing */
		915	const_iv (ENOSYS)
		916	const_iv (EXDEV)
		917	const_iv (EBADR)
471		918
472	while (cur > wanted)	919	/* for lseek */
473	{	920	const_iv (SEEK_DATA)
474	end_thread ();	921	const_iv (SEEK_HOLE)
475	cur--;
476	}
477		922
478	while (started > wanted)	923	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
479	{	924	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
480	poll_wait ();	925	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
481	poll_cb ();	926	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
482	}	927	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
483	}	928	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
484		929
485	static void create_pipe ()	930	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
486	{	931	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
487	if (pipe (respipe))	932	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
488	croak ("unable to initialize result pipe");	933	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		934	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
489		935
490	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	936	/* the second block will be 0 when missing */
491	croak ("cannot set result pipe to nonblocking mode");	937	const_iv (O_RDONLY)
		938	const_iv (O_WRONLY)
		939	const_iv (O_RDWR)
		940	const_iv (O_CREAT)
		941	const_iv (O_TRUNC)
		942	const_iv (O_EXCL)
		943	const_iv (O_APPEND)
492		944
493	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	945	const_iv (O_ASYNC)
494	croak ("cannot set result pipe to nonblocking mode");	946	const_iv (O_DIRECT)
495	}	947	const_iv (O_NOATIME)
496		948
497	/*****************************************************************************/	949	const_iv (O_CLOEXEC)
498	/* work around various missing functions */	950	const_iv (O_NOCTTY)
		951	const_iv (O_NOFOLLOW)
		952	const_iv (O_NONBLOCK)
		953	const_iv (O_EXEC)
		954	const_iv (O_SEARCH)
		955	const_iv (O_DIRECTORY)
		956	const_iv (O_DSYNC)
		957	const_iv (O_RSYNC)
		958	const_iv (O_SYNC)
		959	const_iv (O_PATH)
		960	const_iv (O_TMPFILE)
		961	const_iv (O_TTY_INIT)
499		962
500	#if !HAVE_PREADWRITE	963	const_iv (S_IFIFO)
501	# define pread aio_pread	964	const_iv (S_IFCHR)
502	# define pwrite aio_pwrite	965	const_iv (S_IFBLK)
		966	const_iv (S_IFLNK)
		967	const_iv (S_IFREG)
		968	const_iv (S_IFDIR)
		969	const_iv (S_IFWHT)
		970	const_iv (S_IFSOCK)
		971	const_iv (S_IFMT)
503		972
504	/*	973	const_iv (ST_RDONLY)
505	* make our pread/pwrite safe against themselves, but not against	974	const_iv (ST_NOSUID)
506	* normal read/write by using a mutex. slows down execution a lot,	975	const_iv (ST_NODEV)
507	* but that's your problem, not mine.	976	const_iv (ST_NOEXEC)
508	*/	977	const_iv (ST_SYNCHRONOUS)
509	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	978	const_iv (ST_MANDLOCK)
		979	const_iv (ST_WRITE)
		980	const_iv (ST_APPEND)
		981	const_iv (ST_IMMUTABLE)
		982	const_iv (ST_NOATIME)
		983	const_iv (ST_NODIRATIME)
		984	const_iv (ST_RELATIME)
510		985
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	986	const_iv (PROT_NONE)
512	{	987	const_iv (PROT_EXEC)
513	ssize_t res;	988	const_iv (PROT_READ)
514	off_t ooffset;	989	const_iv (PROT_WRITE)
515		990
516	pthread_mutex_lock (&preadwritelock);	991	const_iv (MAP_PRIVATE)
517	ooffset = lseek (fd, 0, SEEK_CUR);	992	const_iv (MAP_SHARED)
518	lseek (fd, offset, SEEK_SET);	993	const_iv (MAP_FIXED)
519	res = read (fd, buf, count);	994	const_iv (MAP_ANONYMOUS)
520	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);
522		995
523	return res;	996	/* linuxish */
524	}	997	const_iv (MAP_LOCKED)
		998	const_iv (MAP_NORESERVE)
		999	const_iv (MAP_POPULATE)
		1000	const_iv (MAP_NONBLOCK)
		1001	const_iv (MAP_GROWSDOWN)
		1002	const_iv (MAP_32BIT)
		1003	const_iv (MAP_HUGETLB)
		1004	const_iv (MAP_STACK)
525		1005
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1006	const_iv (F_DUPFD_CLOEXEC)
527	{
528	ssize_t res;
529	off_t ooffset;
530		1007
531	pthread_mutex_lock (&preadwritelock);	1008	const_iv (F_OFD_GETLK)
532	ooffset = lseek (fd, 0, SEEK_CUR);	1009	const_iv (F_OFD_SETLK)
533	lseek (fd, offset, SEEK_SET);	1010	const_iv (F_OFD_GETLKW)
534	res = write (fd, buf, count);
535	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);
537		1011
538	return res;	1012	const_iv (FIFREEZE)
539	}	1013	const_iv (FITHAW)
540	#endif	1014	const_iv (FITRIM)
		1015	const_iv (FICLONE)
		1016	const_iv (FICLONERANGE)
		1017	const_iv (FIDEDUPERANGE)
541		1018
542	#if !HAVE_FDATASYNC	1019	const_iv (FS_IOC_GETFLAGS)
543	# define fdatasync fsync	1020	const_iv (FS_IOC_SETFLAGS)
544	#endif	1021	const_iv (FS_IOC_GETVERSION)
		1022	const_iv (FS_IOC_SETVERSION)
		1023	const_iv (FS_IOC_FIEMAP)
		1024	const_iv (FS_IOC_FSGETXATTR)
		1025	const_iv (FS_IOC_FSSETXATTR)
		1026	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1027	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1028	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
545		1029
546	#if !HAVE_READAHEAD	1030	const_iv (FS_KEY_DESCRIPTOR_SIZE)
547	# define readahead aio_readahead
548		1031
549	static ssize_t readahead (int fd, off_t offset, size_t count)	1032	const_iv (FS_SECRM_FL)
550	{	1033	const_iv (FS_UNRM_FL)
551	char readahead_buf[4096];	1034	const_iv (FS_COMPR_FL)
		1035	const_iv (FS_SYNC_FL)
		1036	const_iv (FS_IMMUTABLE_FL)
		1037	const_iv (FS_APPEND_FL)
		1038	const_iv (FS_NODUMP_FL)
		1039	const_iv (FS_NOATIME_FL)
		1040	const_iv (FS_DIRTY_FL)
		1041	const_iv (FS_COMPRBLK_FL)
		1042	const_iv (FS_NOCOMP_FL)
		1043	const_iv (FS_ENCRYPT_FL)
		1044	const_iv (FS_BTREE_FL)
		1045	const_iv (FS_INDEX_FL)
		1046	const_iv (FS_JOURNAL_DATA_FL)
		1047	const_iv (FS_NOTAIL_FL)
		1048	const_iv (FS_DIRSYNC_FL)
		1049	const_iv (FS_TOPDIR_FL)
		1050	const_iv (FS_FL_USER_MODIFIABLE)
552		1051
553	while (count > 0)	1052	const_iv (FS_XFLAG_REALTIME)
554	{	1053	const_iv (FS_XFLAG_PREALLOC)
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	1054	const_iv (FS_XFLAG_IMMUTABLE)
		1055	const_iv (FS_XFLAG_APPEND)
		1056	const_iv (FS_XFLAG_SYNC)
		1057	const_iv (FS_XFLAG_NOATIME)
		1058	const_iv (FS_XFLAG_NODUMP)
		1059	const_iv (FS_XFLAG_RTINHERIT)
		1060	const_iv (FS_XFLAG_PROJINHERIT)
		1061	const_iv (FS_XFLAG_NOSYMLINKS)
		1062	const_iv (FS_XFLAG_EXTSIZE)
		1063	const_iv (FS_XFLAG_EXTSZINHERIT)
		1064	const_iv (FS_XFLAG_NODEFRAG)
		1065	const_iv (FS_XFLAG_FILESTREAM)
		1066	const_iv (FS_XFLAG_DAX)
		1067	const_iv (FS_XFLAG_HASATTR)
556		1068
557	pread (fd, readahead_buf, len, offset);	1069	const_iv (FIEMAP_FLAG_SYNC)
558	offset += len;	1070	const_iv (FIEMAP_FLAG_XATTR)
559	count -= len;	1071	const_iv (FIEMAP_FLAGS_COMPAT)
560	}	1072	const_iv (FIEMAP_EXTENT_LAST)
		1073	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1074	const_iv (FIEMAP_EXTENT_DELALLOC)
		1075	const_iv (FIEMAP_EXTENT_ENCODED)
		1076	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1077	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1078	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1079	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1080	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1081	const_iv (FIEMAP_EXTENT_MERGED)
		1082	const_iv (FIEMAP_EXTENT_SHARED)
561		1083
562	errno = 0;	1084	const_iv (SPLICE_F_MOVE)
563	}	1085	const_iv (SPLICE_F_NONBLOCK)
564	#endif	1086	const_iv (SPLICE_F_MORE)
		1087	const_iv (SPLICE_F_GIFT)
565		1088
566	#if !HAVE_READDIR_R	1089	/* these are libeio constants, and are independent of gendef0 */
567	# define readdir_r aio_readdir_r	1090	const_eio (SEEK_SET)
		1091	const_eio (SEEK_CUR)
		1092	const_eio (SEEK_END)
568		1093
569	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1094	const_eio (MCL_FUTURE)
570		1095	const_eio (MCL_CURRENT)
571	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
572	{
573	struct dirent *e;
574	int errorno;
575		1096
576	pthread_mutex_lock (&readdirlock);	1097	const_eio (MS_ASYNC)
		1098	const_eio (MS_INVALIDATE)
		1099	const_eio (MS_SYNC)
577		1100
578	e = readdir (dirp);	1101	const_eio (MT_MODIFY)
579	errorno = errno;
580		1102
581	if (e)	1103	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
582	{	1104	const_eio (SYNC_FILE_RANGE_WRITE)
583	*res = ent;	1105	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
584	strcpy (ent->d_name, e->d_name);
585	}
586	else
587	*res = 0;
588		1106
589	pthread_mutex_unlock (&readdirlock);	1107	const_eio (FALLOC_FL_KEEP_SIZE)
		1108	const_eio (FALLOC_FL_PUNCH_HOLE)
		1109	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1110	const_eio (FALLOC_FL_ZERO_RANGE)
		1111	const_eio (FALLOC_FL_INSERT_RANGE)
		1112	const_eio (FALLOC_FL_UNSHARE_RANGE)
590		1113
591	errno = errorno;	1114	const_eio (RENAME_NOREPLACE)
592	return e ? 0 : -1;	1115	const_eio (RENAME_EXCHANGE)
593	}	1116	const_eio (RENAME_WHITEOUT)
594	#endif
595		1117
596	/* sendfile always needs emulation */	1118	const_eio (READDIR_DENTS)
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1119	const_eio (READDIR_DIRS_FIRST)
598	{	1120	const_eio (READDIR_STAT_ORDER)
599	ssize_t res;	1121	const_eio (READDIR_FOUND_UNKNOWN)
600		1122
601	if (!count)	1123	const_eio (DT_UNKNOWN)
602	return 0;	1124	const_eio (DT_FIFO)
603		1125	const_eio (DT_CHR)
604	#if HAVE_SENDFILE	1126	const_eio (DT_DIR)
605	# if __linux	1127	const_eio (DT_BLK)
606	res = sendfile (ofd, ifd, &offset, count);	1128	const_eio (DT_REG)
607		1129	const_eio (DT_LNK)
608	# elif __freebsd	1130	const_eio (DT_SOCK)
609	/*	1131	const_eio (DT_WHT)
610	* Of course, the freebsd sendfile is a dire hack with no thoughts
611	* wasted on making it similar to other I/O functions.
612	*/
613	{
614	off_t sbytes;
615	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
616
617	if (res < 0 && sbytes)
618	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
619	res = sbytes;
620	}	1132	};
621		1133
622	# elif __hpux	1134	aio_stash = gv_stashpv ("IO::AIO" , 1);
623	res = sendfile (ofd, ifd, offset, count, 0, 0);	1135	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1136	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1137	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
624		1138
625	# elif __solaris	1139	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
626	{	1140	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
627	struct sendfilevec vec;
628	size_t sbytes;
629		1141
630	vec.sfv_fd = ifd;	1142	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
631	vec.sfv_flag = 0;
632	vec.sfv_off = offset;
633	vec.sfv_len = count;
634		1143
635	res = sendfilev (ofd, &vec, 1, &sbytes);	1144	reinit ();
		1145	}
636		1146
637	if (res < 0 && sbytes)	1147	void
		1148	reinit ()
		1149	PROTOTYPE:
		1150
		1151	void
		1152	max_poll_reqs (unsigned int nreqs)
		1153	PROTOTYPE: $
		1154	CODE:
		1155	eio_set_max_poll_reqs (nreqs);
		1156
		1157	void
		1158	max_poll_time (double nseconds)
		1159	PROTOTYPE: $
		1160	CODE:
		1161	eio_set_max_poll_time (nseconds);
		1162
		1163	void
		1164	min_parallel (unsigned int nthreads)
		1165	PROTOTYPE: $
		1166	CODE:
		1167	eio_set_min_parallel (nthreads);
		1168
		1169	void
		1170	max_parallel (unsigned int nthreads)
		1171	PROTOTYPE: $
		1172	CODE:
		1173	eio_set_max_parallel (nthreads);
		1174
		1175	void
		1176	max_idle (unsigned int nthreads)
		1177	PROTOTYPE: $
		1178	CODE:
		1179	eio_set_max_idle (nthreads);
		1180
		1181	void
		1182	idle_timeout (unsigned int seconds)
		1183	PROTOTYPE: $
		1184	CODE:
		1185	eio_set_idle_timeout (seconds);
		1186
		1187	void
		1188	max_outstanding (unsigned int maxreqs)
		1189	PROTOTYPE: $
		1190	CODE:
		1191	max_outstanding = maxreqs;
		1192
		1193	void
		1194	aio_wd (SV8 pathname, SV callback = &PL_sv_undef)
		1195	PPCODE:
		1196	{
		1197	dREQ;
		1198
		1199	req->type = EIO_WD_OPEN;
		1200	req_set_path1 (req, pathname);
		1201
		1202	REQ_SEND;
		1203	}
		1204
		1205	void
		1206	aio_open (SV8 pathname, int flags, int mode, SV callback = &PL_sv_undef)
		1207	PPCODE:
		1208	{
		1209	dREQ;
		1210
		1211	req->type = EIO_OPEN;
		1212	req_set_path1 (req, pathname);
		1213	req->int1 = flags;
		1214	req->int2 = mode;
		1215
		1216	REQ_SEND;
		1217	}
		1218
		1219	void
		1220	aio_fsync (SV fh, SV callback = &PL_sv_undef)
		1221	ALIAS:
		1222	aio_fsync = EIO_FSYNC
		1223	aio_fdatasync = EIO_FDATASYNC
		1224	aio_syncfs = EIO_SYNCFS
		1225	PPCODE:
		1226	{
		1227	int fd = s_fileno_croak (fh, 0);
		1228	dREQ;
		1229
		1230	req->type = ix;
		1231	req->sv1 = newSVsv (fh);
		1232	req->int1 = fd;
		1233
		1234	REQ_SEND;
		1235	}
		1236
		1237	void
		1238	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback = &PL_sv_undef)
		1239	PPCODE:
		1240	{
		1241	int fd = s_fileno_croak (fh, 0);
		1242	dREQ;
		1243
		1244	req->type = EIO_SYNC_FILE_RANGE;
		1245	req->sv1 = newSVsv (fh);
		1246	req->int1 = fd;
		1247	req->offs = offset;
638	res = sbytes;	1248	req->size = nbytes;
639	}	1249	req->int2 = flags;
640		1250
641	# endif	1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback = &PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int fd = s_fileno_croak (fh, 0);
		1259	dREQ;
		1260
		1261	req->type = EIO_FALLOCATE;
		1262	req->sv1 = newSVsv (fh);
		1263	req->int1 = fd;
		1264	req->int2 = mode;
		1265	req->offs = offset;
		1266	req->size = len;
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_close (SV fh, SV callback = &PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1276	int fd = s_fileno_croak (fh, 0);
		1277	dREQ;
		1278
		1279	if (expect_false (close_fd < 0))
		1280	{
		1281	int pipefd [2];
		1282
		1283	if (
		1284	#ifdef _WIN32
		1285	_pipe (pipefd, 1, _O_BINARY) < 0
642	#else	1286	#else
643	res = -1;	1287	pipe (pipefd) < 0
644	errno = ENOSYS;	1288	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
645	#endif	1289	#endif
646		1290	\|\| close (pipefd [1]) < 0
647	if (res < 0
648	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
649	#if __solaris
650	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
651	#endif
652	)
653	)
654	{
655	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];
657	res = 0;
658
659	while (count)
660	{
661	ssize_t cnt;
662
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
664
665	if (cnt <= 0)
666	{	1291	)
667	if (cnt && !res) res = -1;	1292	abort (); /D/
668	break;
669	}
670		1293
671	cnt = write (ofd, buf, cnt);	1294	close_fd = pipefd [0];
672
673	if (cnt <= 0)
674	{
675	if (cnt && !res) res = -1;
676	break;
677	}
678
679	offset += cnt;
680	res += cnt;
681	count -= cnt;
682	}
683	}
684
685	return res;
686	}
687
688	/* read a full directory */
689	static int scandir_ (const char path, void *namesp)
690	{
691	DIR *dirp = opendir (path);
692	union
693	{
694	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;
697	struct dirent *entp;
698	char name, names;
699	int memlen = 4096;
700	int memofs = 0;
701	int res = 0;
702	int errorno;
703
704	if (!dirp)
705	return -1;
706
707	names = malloc (memlen);
708
709	for (;;)
710	{
711	errno = 0, readdir_r (dirp, &u.d, &entp);
712
713	if (!entp)
714	break;
715
716	name = entp->d_name;
717
718	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
719	{
720	int len = strlen (name) + 1;
721
722	res++;
723
724	while (memofs + len > memlen)
725	{
726	memlen *= 2;
727	names = realloc (names, memlen);
728	if (!names)
729	break;
730	}
731
732	memcpy (names + memofs, name, len);
733	memofs += len;
734	}
735	}
736
737	errorno = errno;
738	closedir (dirp);
739
740	if (errorno)
741	{
742	free (names);
743	errno = errorno;
744	res = -1;
745	}
746
747	namesp = (void )names;
748	return res;
749	}
750
751	/*****************************************************************************/
752
753	static void aio_proc (void thr_arg)
754	{
755	aio_req req;
756	int type;
757
758	do
759	{
760	pthread_mutex_lock (&reqlock);
761
762	for (;;)
763	{
764	req = reqs;
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771
772	if (req)
773	break;
774
775	pthread_cond_wait (&reqwait, &reqlock);
776	}
777
778	pthread_mutex_unlock (&reqlock);
779
780	errno = 0; /* strictly unnecessary */
781
782	if (!req->cancelled)
783	switch (req->type)
784	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
787
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
789	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
790
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
792	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
793	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
794
795	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
796	case REQ_CLOSE: req->result = close (req->fd); break;
797	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
798	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
799	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
802
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
806
807	case REQ_SLEEP:
808	{
809	struct timeval tv;
810
811	tv.tv_sec = req->fd;
812	tv.tv_usec = req->fd2;
813
814	req->result = select (0, 0, 0, 0, &tv);
815	}
816
817	case REQ_QUIT:
818	break;
819
820	default:
821	req->result = ENOSYS;
822	break;
823	}	1295	}
824		1296
825	req->errorno = errno;	1297	req->type = EIO_DUP2;
826		1298	req->int1 = close_fd;
827	pthread_mutex_lock (&reslock);	1299	req->sv2 = newSVsv (fh);
828
829	req->next = 0;	1300	req->int2 = fd;
830		1301
831	if (rese)	1302	REQ_SEND;
832	{
833	rese->next = req;
834	rese = req;
835	}
836	else
837	{
838	rese = ress = req;
839
840	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);
842	}
843
844	pthread_mutex_unlock (&reslock);
845	}
846	while (type != REQ_QUIT);
847
848	return 0;
849	}	1303	}
850		1304
851	/*****************************************************************************/
852
853	static void atfork_prepare (void)
854	{
855	pthread_mutex_lock (&reqlock);
856	pthread_mutex_lock (&reslock);
857	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);
859	#endif
860	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);
862	#endif
863	}
864
865	static void atfork_parent (void)
866	{
867	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);
869	#endif
870	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);
872	#endif
873	pthread_mutex_unlock (&reslock);
874	pthread_mutex_unlock (&reqlock);
875	}
876
877	static void atfork_child (void)
878	{
879	aio_req prv;
880
881	started = 0;
882
883	while (reqs)
884	{
885	prv = reqs;
886	reqs = prv->next;
887	req_free (prv);
888	}
889
890	reqs = reqe = 0;
891
892	while (ress)
893	{
894	prv = ress;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900
901	close (respipe [0]);
902	close (respipe [1]);
903	create_pipe ();
904
905	atfork_parent ();
906	}
907
908	#define dREQ \
909	aio_req req; \
910	\
911	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \
913	\
914	Newz (0, req, 1, aio_cb); \
915	if (!req) \
916	croak ("out of memory during aio_req allocation"); \
917	\
918	req->callback = newSVsv (callback)
919
920	#define REQ_SEND \
921	req_send (req); \
922	\
923	if (GIMME_V != G_VOID) \
924	XPUSHs (req_sv (req, AIO_REQ_KLASS));
925
926	MODULE = IO::AIO PACKAGE = IO::AIO
927
928	PROTOTYPES: ENABLE
929
930	BOOT:
931	{
932	HV *stash = gv_stashpv ("IO::AIO", 1);
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
936
937	create_pipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939	}
940
941	void	1305	void
942	min_parallel (nthreads)	1306	aio_seek (SV fh, SV offset, int whence, SV *callback = &PL_sv_undef)
943	int nthreads
944	PROTOTYPE: $
945
946	void
947	max_parallel (nthreads)
948	int nthreads
949	PROTOTYPE: $
950
951	int
952	max_outstanding (nreqs)
953	int nreqs
954	PROTOTYPE: $
955	CODE:	1307	PPCODE:
956	RETVAL = max_outstanding;
957	max_outstanding = nreqs;
958
959	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
961	SV * pathname
962	int flags
963	int mode
964	SV * callback
965	PROTOTYPE: $$$;$
966	PPCODE:
967	{	1308	{
		1309	int fd = s_fileno_croak (fh, 0);
968	dREQ;	1310	dREQ;
969		1311
970	req->type = REQ_OPEN;	1312	req->type = EIO_SEEK;
971	req->data = newSVsv (pathname);	1313	req->sv1 = newSVsv (fh);
972	req->dataptr = SvPVbyte_nolen (req->data);	1314	req->int1 = fd;
973	req->fd = flags;	1315	req->offs = SvVAL64 (offset);
974	req->mode = mode;	1316	req->int2 = whence;
975		1317
976	REQ_SEND;	1318	REQ_SEND;
977	}	1319	}
978		1320
979	void	1321	void
980	aio_close (fh,callback=&PL_sv_undef)	1322	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback = &PL_sv_undef)
981	SV * fh
982	SV * callback
983	PROTOTYPE: $;$
984	ALIAS:	1323	ALIAS:
985	aio_close = REQ_CLOSE
986	aio_fsync = REQ_FSYNC
987	aio_fdatasync = REQ_FDATASYNC
988	PPCODE:
989	{
990	dREQ;
991
992	req->type = ix;
993	req->fh = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
995
996	REQ_SEND (req);
997	}
998
999	void
1000	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1001	SV * fh
1002	UV offset
1003	UV length
1004	SV * data
1005	UV dataoffset
1006	SV * callback
1007	ALIAS:
1008	aio_read = REQ_READ	1324	aio_read = EIO_READ
1009	aio_write = REQ_WRITE	1325	aio_write = EIO_WRITE
1010	PROTOTYPE: $$$$$;$
1011	PPCODE:	1326	PPCODE:
1012	{	1327	{
1013	aio_req req;
1014	STRLEN svlen;	1328	STRLEN svlen;
		1329	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1015	char *svptr = SvPVbyte (data, svlen);	1330	char *svptr = SvPVbyte (data, svlen);
1016		1331	UV len = SvUV (length);
1017	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);
1019		1332
1020	if (dataoffset < 0)	1333	if (dataoffset < 0)
1021	dataoffset += svlen;	1334	dataoffset += svlen;
1022		1335
1023	if (dataoffset < 0 \|\| dataoffset > svlen)	1336	if (dataoffset < 0 \|\| dataoffset > svlen)
1024	croak ("data offset outside of string");	1337	croak ("dataoffset outside of data scalar");
1025		1338
1026	if (ix == REQ_WRITE)	1339	if (ix == EIO_WRITE)
1027	{	1340	{
1028	/* write: check length and adjust. */	1341	/* write: check length and adjust. */
1029	if (length < 0 \|\| length + dataoffset > svlen)	1342	if (!SvOK (length) \|\| len + dataoffset > svlen)
1030	length = svlen - dataoffset;	1343	len = svlen - dataoffset;
1031	}	1344	}
1032	else	1345	else
1033	{	1346	{
1034	/* read: grow scalar as necessary */	1347	/* read: check type and grow scalar as necessary */
		1348	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
1035	svptr = SvGROW (data, length + dataoffset);	1349	svptr = sv_grow (data, len + dataoffset + 1);
		1350	else if (SvCUR (data) < len + dataoffset)
		1351	croak ("length + dataoffset outside of scalar, and cannot grow");
1036	}	1352	}
1037
1038	if (length < 0)
1039	croak ("length must not be negative");
1040		1353
1041	{	1354	{
1042	dREQ;	1355	dREQ;
1043		1356
1044	req->type = ix;	1357	req->type = ix;
1045	req->fh = newSVsv (fh);	1358	req->sv1 = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1359	req->int1 = fd;
1047	: IoOFP (sv_2io (fh)));	1360	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1048	req->offset = offset;	1361	req->size = len;
1049	req->length = length;
1050	req->data = SvREFCNT_inc (data);	1362	req->sv2 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	1363	req->ptr2 = (char *)svptr + dataoffset;
		1364	req->stroffset = dataoffset;
1052		1365
1053	if (!SvREADONLY (data))	1366	if (!SvREADONLY (data))
1054	{	1367	{
1055	SvREADONLY_on (data);	1368	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	1369	req->flags \|= FLAG_SV2_RO_OFF;
1057	}	1370	}
1058		1371
1059	REQ_SEND;	1372	REQ_SEND;
1060	}	1373	}
1061	}	1374	}
1062		1375
1063	void	1376	void
1064	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1377	aio_ioctl (SV fh, unsigned long request, SV8 arg, SV *callback = &PL_sv_undef)
1065	SV * out_fh	1378	ALIAS:
1066	SV * in_fh	1379	aio_ioctl = EIO_IOCTL
1067	UV in_offset	1380	aio_fcntl = EIO_FCNTL
1068	UV length
1069	SV * callback
1070	PROTOTYPE: $$$$;$
1071	PPCODE:	1381	PPCODE:
1072	{	1382	{
1073	dREQ;	1383	int fd = s_fileno_croak (fh, 0);
		1384	char *svptr;
1074		1385
1075	req->type = REQ_SENDFILE;	1386	if (SvPOK (arg) \|\| !SvNIOK (arg))
1076	req->fh = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1078	req->fh2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1080	req->offset = in_offset;
1081	req->length = length;
1082
1083	REQ_SEND;
1084	}
1085
1086	void
1087	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1088	SV * fh
1089	UV offset
1090	IV length
1091	SV * callback
1092	PROTOTYPE: $$$;$
1093	PPCODE:
1094	{
1095	dREQ;
1096
1097	req->type = REQ_READAHEAD;
1098	req->fh = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1100	req->offset = offset;
1101	req->length = length;
1102
1103	REQ_SEND;
1104	}
1105
1106	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)
1108	SV * fh_or_path
1109	SV * callback
1110	ALIAS:
1111	aio_stat = REQ_STAT
1112	aio_lstat = REQ_LSTAT
1113	PPCODE:
1114	{
1115	dREQ;
1116
1117	New (0, req->statdata, 1, Stat_t);
1118	if (!req->statdata)
1119	{	1387	{
1120	req_free (req);	1388	STRLEN svlen;
1121	croak ("out of memory during aio_req->statdata allocation");	1389	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1122	}	1390	#ifdef IOCPARM_LEN
		1391	STRLEN need = IOCPARM_LEN (request);
		1392	#else
		1393	STRLEN need = 256;
		1394	#endif
1123		1395
1124	if (SvPOK (fh_or_path))	1396	if (svlen < need)
1125	{	1397	svptr = SvGROW (arg, need);
1126	req->type = ix;
1127	req->data = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);
1129	}	1398	}
1130	else	1399	else
		1400	svptr = (char *)SvIV (arg);
		1401
1131	{	1402	{
		1403	dREQ;
		1404
1132	req->type = REQ_FSTAT;	1405	req->type = ix;
1133	req->fh = newSVsv (fh_or_path);	1406	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1407	req->int1 = fd;
		1408	req->int2 = (long)request;
		1409	req->sv2 = SvREFCNT_inc (arg);
		1410	req->ptr2 = svptr;
		1411
		1412	REQ_SEND;
1135	}	1413	}
		1414	}
		1415
		1416	void
		1417	aio_readlink (SV8 pathname, SV callback = &PL_sv_undef)
		1418	ALIAS:
		1419	aio_readlink = EIO_READLINK
		1420	aio_realpath = EIO_REALPATH
		1421	PPCODE:
		1422	{
		1423	dREQ;
		1424
		1425	req->type = ix;
		1426	req_set_path1 (req, pathname);
1136		1427
1137	REQ_SEND;	1428	REQ_SEND;
1138	}	1429	}
1139		1430
1140	void	1431	void
1141	aio_unlink (pathname,callback=&PL_sv_undef)	1432	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1142	SV * pathname	1433	PPCODE:
1143	SV * callback	1434	{
		1435	int ifd = s_fileno_croak (in_fh , 0);
		1436	int ofd = s_fileno_croak (out_fh, 1);
		1437	dREQ;
		1438
		1439	req->type = EIO_SENDFILE;
		1440	req->sv1 = newSVsv (out_fh);
		1441	req->int1 = ofd;
		1442	req->sv2 = newSVsv (in_fh);
		1443	req->int2 = ifd;
		1444	req->offs = in_offset;
		1445	req->size = length;
		1446
		1447	REQ_SEND;
		1448	}
		1449
		1450	void
		1451	aio_readahead (SV fh, off_t offset, size_t length, SV callback = &PL_sv_undef)
		1452	PPCODE:
		1453	{
		1454	int fd = s_fileno_croak (fh, 0);
		1455	dREQ;
		1456
		1457	req->type = EIO_READAHEAD;
		1458	req->sv1 = newSVsv (fh);
		1459	req->int1 = fd;
		1460	req->offs = offset;
		1461	req->size = length;
		1462
		1463	REQ_SEND;
		1464	}
		1465
		1466	void
		1467	aio_stat (SV8 fh_or_path, SV callback = &PL_sv_undef)
1144	ALIAS:	1468	ALIAS:
		1469	aio_stat = EIO_STAT
		1470	aio_lstat = EIO_LSTAT
		1471	aio_statvfs = EIO_STATVFS
		1472	PPCODE:
		1473	{
		1474	dREQ;
		1475
		1476	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1477
		1478	REQ_SEND;
		1479	}
		1480
		1481	UV
		1482	major (UV dev)
		1483	ALIAS:
		1484	minor = 1
		1485	CODE:
		1486	RETVAL = ix ? minor (dev) : major (dev);
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	UV
		1491	makedev (UV maj, UV min)
		1492	CODE:
		1493	RETVAL = makedev (maj, min);
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void
		1498	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback = &PL_sv_undef)
		1499	PPCODE:
		1500	{
		1501	dREQ;
		1502
		1503	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1504	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1505	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1506
		1507	REQ_SEND;
		1508	}
		1509
		1510	void
		1511	aio_truncate (SV8 fh_or_path, SV offset, SV *callback = &PL_sv_undef)
		1512	PPCODE:
		1513	{
		1514	dREQ;
		1515
		1516	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1517	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1518
		1519	REQ_SEND;
		1520	}
		1521
		1522	void
		1523	aio_chmod (SV8 fh_or_path, int mode, SV callback = &PL_sv_undef)
		1524	PPCODE:
		1525	{
		1526	dREQ;
		1527
		1528	req->int2 = mode;
		1529	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1530
		1531	REQ_SEND;
		1532	}
		1533
		1534	void
		1535	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback = &PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	dREQ;
		1539
		1540	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1541	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1542	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1543
		1544	REQ_SEND;
		1545	}
		1546
		1547	void
		1548	aio_readdirx (SV8 pathname, IV flags, SV callback = &PL_sv_undef)
		1549	PPCODE:
		1550	{
		1551	dREQ;
		1552
		1553	req->type = EIO_READDIR;
		1554	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1555
		1556	if (flags & EIO_READDIR_DENTS)
		1557	req->int1 \|= EIO_READDIR_CUSTOM2;
		1558
		1559	req_set_path1 (req, pathname);
		1560
		1561	REQ_SEND;
		1562	}
		1563
		1564	void
		1565	aio_mkdir (SV8 pathname, int mode, SV callback = &PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
		1570	req->type = EIO_MKDIR;
		1571	req->int2 = mode;
		1572	req_set_path1 (req, pathname);
		1573
		1574	REQ_SEND;
		1575	}
		1576
		1577	void
		1578	aio_unlink (SV8 pathname, SV callback = &PL_sv_undef)
		1579	ALIAS:
1145	aio_unlink = REQ_UNLINK	1580	aio_unlink = EIO_UNLINK
1146	aio_rmdir = REQ_RMDIR	1581	aio_rmdir = EIO_RMDIR
1147	aio_readdir = REQ_READDIR	1582	aio_readdir = EIO_READDIR
1148	PPCODE:	1583	PPCODE:
1149	{	1584	{
1150	dREQ;	1585	dREQ;
1151		1586
1152	req->type = ix;	1587	req->type = ix;
1153	req->data = newSVsv (pathname);	1588	req_set_path1 (req, pathname);
1154	req->dataptr = SvPVbyte_nolen (req->data);	1589
1155
1156	REQ_SEND;	1590	REQ_SEND;
1157	}	1591	}
1158		1592
1159	void	1593	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1594	aio_link (SV8 oldpath, SV8 newpath, SV *callback = &PL_sv_undef)
1161	SV * oldpath
1162	SV * newpath
1163	SV * callback
1164	ALIAS:	1595	ALIAS:
1165	aio_link = REQ_LINK	1596	aio_link = EIO_LINK
1166	aio_symlink = REQ_SYMLINK	1597	aio_symlink = EIO_SYMLINK
1167	aio_rename = REQ_RENAME	1598	aio_rename = EIO_RENAME
1168	PPCODE:	1599	PPCODE:
1169	{	1600	{
		1601	eio_wd wd2 = 0;
1170	dREQ;	1602	dREQ;
1171		1603
1172	req->type = ix;	1604	req->type = ix;
1173	req->fh = newSVsv (oldpath);	1605	req_set_path1 (req, oldpath);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	1606	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1175	req->data = newSVsv (newpath);	1607	req->int3 = (long)wd2;
1176	req->dataptr = SvPVbyte_nolen (req->data);
1177		1608
1178	REQ_SEND;	1609	REQ_SEND;
1179	}	1610	}
1180		1611
1181	void	1612	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1613	aio_rename2 (SV8 oldpath, SV8 newpath, int flags = 0, SV *callback = &PL_sv_undef)
1183	double delay
1184	SV * callback
1185	PPCODE:	1614	PPCODE:
1186	{	1615	{
		1616	eio_wd wd2 = 0;
1187	dREQ;	1617	dREQ;
1188		1618
1189	req->type = REQ_SLEEP;	1619	req->type = EIO_RENAME;
1190	req->fd = delay < 0. ? 0 : delay;	1620	req_set_path1 (req, oldpath);
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1621	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1192		1622	req->int2 = flags;
		1623	req->int3 = (long)wd2;
		1624
1193	REQ_SEND;	1625	REQ_SEND;
1194	}	1626	}
1195		1627
1196	void	1628	void
1197	aio_group (callback=&PL_sv_undef)	1629	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
1198	SV * callback	1630	PPCODE:
1199	PROTOTYPE: ;$	1631	{
		1632	dREQ;
		1633
		1634	req->type = EIO_MKNOD;
		1635	req->int2 = (mode_t)mode;
		1636	req->offs = dev;
		1637	req_set_path1 (req, pathname);
		1638
		1639	REQ_SEND;
		1640	}
		1641
		1642	void
		1643	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1644	ALIAS:
		1645	aio_mtouch = EIO_MTOUCH
		1646	aio_msync = EIO_MSYNC
1200	PPCODE:	1647	PPCODE:
1201	{	1648	{
		1649	STRLEN svlen;
		1650	char *svptr = SvPVbyte (data, svlen);
		1651	UV len = SvUV (length);
		1652
		1653	if (flags < 0)
		1654	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1655
		1656	if (offset < 0)
		1657	offset += svlen;
		1658
		1659	if (offset < 0 \|\| offset > svlen)
		1660	croak ("offset outside of scalar");
		1661
		1662	if (!SvOK (length) \|\| len + offset > svlen)
		1663	len = svlen - offset;
		1664
		1665	{
		1666	dREQ;
		1667
		1668	req->type = ix;
		1669	req->sv2 = SvREFCNT_inc (data);
		1670	req->ptr2 = (char *)svptr + offset;
		1671	req->size = len;
		1672	req->int1 = flags;
		1673
		1674	REQ_SEND;
		1675	}
		1676	}
		1677
		1678	void
		1679	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1680	PPCODE:
		1681	{
		1682	STRLEN svlen;
		1683	char *svptr = SvPVbyte (data, svlen);
		1684	UV len = SvUV (length);
		1685
		1686	if (offset < 0)
		1687	offset += svlen;
		1688
		1689	if (offset < 0 \|\| offset > svlen)
		1690	croak ("offset outside of scalar");
		1691
		1692	if (!SvOK (length) \|\| len + offset > svlen)
		1693	len = svlen - offset;
		1694
		1695	{
		1696	dREQ;
		1697
		1698	req->type = EIO_MLOCK;
		1699	req->sv2 = SvREFCNT_inc (data);
		1700	req->ptr2 = (char *)svptr + offset;
		1701	req->size = len;
		1702
		1703	REQ_SEND;
		1704	}
		1705	}
		1706
		1707	void
		1708	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->type = EIO_MLOCKALL;
		1714	req->int1 = flags;
		1715
		1716	REQ_SEND;
		1717	}
		1718
		1719	void
		1720	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback = &PL_sv_undef)
		1721	PPCODE:
		1722	{
		1723	int fd = s_fileno_croak (fh, 0);
1202	dREQ;	1724	dREQ;
		1725
		1726	req->type = EIO_CUSTOM;
		1727	req->sv1 = newSVsv (fh);
		1728	req->int1 = fd;
		1729
		1730	req->feed = fiemap;
		1731	#if HAVE_FIEMAP
		1732	/* keep our fingers crossed that the next two types are 64 bit */
		1733	req->offs = start;
		1734	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1735	req->int2 = flags;
		1736	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1737	#endif
		1738
		1739	REQ_SEND;
		1740	}
		1741
		1742	void
		1743	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1744	PPCODE:
		1745	{
		1746	dREQ;
		1747
		1748	req->type = EIO_BUSY;
		1749	req->nv1 = delay < 0. ? 0. : delay;
		1750
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
		1755	aio_group (SV *callback = &PL_sv_undef)
		1756	PPCODE:
		1757	{
		1758	dREQ;
		1759
1203	req->type = REQ_GROUP;	1760	req->type = EIO_GROUP;
		1761
		1762	PUTBACK;
1204	req_send (req);	1763	req_submit (req);
		1764	SPAGAIN;
		1765
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1766	XPUSHs (req_sv (req, aio_grp_stash));
1206	}	1767	}
		1768
		1769	void
		1770	aio_nop (SV *callback = &PL_sv_undef)
		1771	ALIAS:
		1772	aio_nop = EIO_NOP
		1773	aio_sync = EIO_SYNC
		1774	PPCODE:
		1775	{
		1776	dREQ;
		1777
		1778	req->type = ix;
		1779
		1780	REQ_SEND;
		1781	}
		1782
		1783	int
		1784	aioreq_pri (int pri = NO_INIT)
		1785	CODE:
		1786	RETVAL = next_pri;
		1787	if (items > 0)
		1788	{
		1789	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1790	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1791	next_pri = pri;
		1792	}
		1793	OUTPUT:
		1794	RETVAL
		1795
		1796	void
		1797	aioreq_nice (int nice = 0)
		1798	CODE:
		1799	nice = next_pri - nice;
		1800	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1801	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1802	next_pri = nice;
1207		1803
1208	void	1804	void
1209	flush ()	1805	flush ()
1210	PROTOTYPE:
1211	CODE:	1806	CODE:
1212	while (nreqs)	1807	while (eio_nreqs ())
1213	{	1808	{
1214	poll_wait ();	1809	poll_wait ();
1215	poll_cb ();	1810	poll_cb ();
1216	}	1811	}
1217		1812
1218	void	1813	int
1219	poll()	1814	poll ()
1220	PROTOTYPE:
1221	CODE:	1815	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	1816	poll_wait ();
1225	poll_cb ();	1817	RETVAL = poll_cb ();
1226	}
1227
1228	int
1229	poll_fileno()
1230	PROTOTYPE:
1231	CODE:
1232	RETVAL = respipe [0];
1233	OUTPUT:	1818	OUTPUT:
1234	RETVAL	1819	RETVAL
1235		1820
1236	int	1821	int
		1822	poll_fileno ()
		1823	CODE:
		1824	RETVAL = s_epipe_fd (&respipe);
		1825	OUTPUT:
		1826	RETVAL
		1827
		1828	int
1237	poll_cb(...)	1829	poll_cb (...)
1238	PROTOTYPE:	1830	PROTOTYPE:
1239	CODE:	1831	CODE:
1240	RETVAL = poll_cb ();	1832	RETVAL = poll_cb ();
1241	OUTPUT:	1833	OUTPUT:
1242	RETVAL	1834	RETVAL
1243		1835
1244	void	1836	void
1245	poll_wait()	1837	poll_wait ()
1246	PROTOTYPE:
1247	CODE:	1838	CODE:
1248	if (nreqs)
1249	poll_wait ();	1839	poll_wait ();
1250		1840
1251	int	1841	int
1252	nreqs()	1842	nreqs ()
1253	PROTOTYPE:
1254	CODE:	1843	CODE:
1255	RETVAL = nreqs;	1844	RETVAL = eio_nreqs ();
1256	OUTPUT:	1845	OUTPUT:
1257	RETVAL	1846	RETVAL
1258		1847
		1848	int
		1849	nready ()
		1850	CODE:
		1851	RETVAL = eio_nready ();
		1852	OUTPUT:
		1853	RETVAL
		1854
		1855	int
		1856	npending ()
		1857	CODE:
		1858	RETVAL = eio_npending ();
		1859	OUTPUT:
		1860	RETVAL
		1861
		1862	int
		1863	nthreads ()
		1864	CODE:
		1865	RETVAL = eio_nthreads ();
		1866	OUTPUT:
		1867	RETVAL
		1868
		1869	int
		1870	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1871	CODE:
		1872	RETVAL = posix_fadvise (fh, offset, length, advice);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	IV
		1877	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1878	CODE:
		1879	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	void
		1884	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		1885	PPCODE:
		1886	sv_unmagic (scalar, MMAP_MAGIC);
		1887	{
		1888	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1889	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		1890	if (addr == (void *)-1)
		1891	XSRETURN_NO;
		1892
		1893	sv_force_normal (scalar);
		1894
		1895	/* we store the length in mg_obj, as namlen is I32 :/ */
		1896	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1897	->mg_obj = (SV *)length;
		1898
		1899	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1900
		1901	if (!(prot & PROT_WRITE))
		1902	SvREADONLY_on (scalar);
		1903
		1904	if (SvLEN (scalar))
		1905	Safefree (SvPVX (scalar));
		1906
		1907	SvPVX (scalar) = (char *)addr;
		1908	SvCUR_set (scalar, length);
		1909	SvLEN_set (scalar, 0);
		1910	SvPOK_only (scalar);
		1911
		1912	XSRETURN_YES;
		1913	}
		1914
		1915	void
		1916	munmap (SV *scalar)
		1917	CODE:
		1918	sv_unmagic (scalar, MMAP_MAGIC);
		1919
		1920	int
		1921	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		1922	ALIAS:
		1923	mprotect = 1
		1924	CODE:
		1925	{
		1926	STRLEN svlen;
		1927	void *addr = SvPVbyte (scalar, svlen);
		1928	STRLEN len = SvUV (length);
		1929
		1930	if (offset < 0)
		1931	offset += svlen;
		1932
		1933	if (offset < 0 \|\| offset > svlen)
		1934	croak ("offset outside of scalar");
		1935
		1936	if (!SvOK (length) \|\| len + offset > svlen)
		1937	len = svlen - offset;
		1938
		1939	addr = (void *)(((intptr_t)addr) + offset);
		1940	eio_page_align (&addr, &len);
		1941
		1942	switch (ix)
		1943	{
		1944	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1945	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1946	}
		1947	}
		1948	OUTPUT:
		1949	RETVAL
		1950
		1951	int
		1952	munlock (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef)
		1953	CODE:
		1954	{
		1955	STRLEN svlen;
		1956	void *addr = SvPVbyte (scalar, svlen);
		1957	size_t len = SvUV (length);
		1958
		1959	if (offset < 0)
		1960	offset += svlen;
		1961
		1962	if (offset < 0 \|\| offset > svlen)
		1963	croak ("offset outside of scalar");
		1964
		1965	if (!SvOK (length) \|\| len + offset > svlen)
		1966	len = svlen - offset;
		1967
		1968	addr = (void *)(((intptr_t)addr) + offset);
		1969	eio_page_align (&addr, &len);
		1970	#if _POSIX_MEMLOCK_RANGE
		1971	RETVAL = munlock (addr, len);
		1972	#else
		1973	RETVAL = EIO_ENOSYS ();
		1974	#endif
		1975	}
		1976	OUTPUT:
		1977	RETVAL
		1978
		1979	int
		1980	munlockall ()
		1981	CODE:
		1982	#if _POSIX_MEMLOCK
		1983	munlockall ();
		1984	#else
		1985	RETVAL = EIO_ENOSYS ();
		1986	#endif
		1987	OUTPUT:
		1988	RETVAL
		1989
		1990	int
		1991	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		1992	CODE:
		1993	{
		1994	#if HAVE_LINUX_SPLICE
		1995	loff_t off_in_, off_out_;
		1996	RETVAL = splice (
		1997	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1998	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1999	length, flags
		2000	);
		2001	#else
		2002	RETVAL = EIO_ENOSYS ();
		2003	#endif
		2004	}
		2005	OUTPUT:
		2006	RETVAL
		2007
		2008	int
		2009	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2010	CODE:
		2011	#if HAVE_LINUX_SPLICE
		2012	RETVAL = tee (rfh, wfh, length, flags);
		2013	#else
		2014	RETVAL = EIO_ENOSYS ();
		2015	#endif
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	pipesize (aio_rfd rfh, int new_size = -1)
		2021	PROTOTYPE: $;$
		2022	CODE:
		2023	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2024	if (new_size >= 0)
		2025	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2026	else
		2027	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2028	#else
		2029	errno = ENOSYS;
		2030	RETVAL = -1;
		2031	#endif
		2032	OUTPUT:
		2033	RETVAL
		2034
		2035	void
		2036	pipe2 (int flags = 0)
		2037	PROTOTYPE: ;$
		2038	PPCODE:
		2039	{
		2040	int fd[2];
		2041	int res;
		2042
		2043	if (flags)
		2044	#if HAVE_PIPE2
		2045	res = pipe2 (fd, flags);
		2046	#else
		2047	res = (errno = ENOSYS, -1);
		2048	#endif
		2049	else
		2050	res = pipe (fd);
		2051
		2052	if (!res)
		2053	{
		2054	EXTEND (SP, 2);
		2055	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2056	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2057	}
		2058	}
		2059
		2060	UV
		2061	get_fdlimit ()
		2062	CODE:
		2063	#if HAVE_RLIMITS
		2064	struct rlimit rl;
		2065	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2066	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2067	#endif
		2068	XSRETURN_UNDEF;
		2069	OUTPUT:
		2070	RETVAL
		2071
		2072	void
		2073	min_fdlimit (UV limit = 0x7fffffffU)
		2074	CODE:
		2075	{
		2076	#if HAVE_RLIMITS
		2077	struct rlimit rl;
		2078	rlim_t orig_rlim_max;
		2079	UV bit;
		2080
		2081	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2082	goto fail;
		2083
		2084	if (rl.rlim_cur == RLIM_INFINITY)
		2085	XSRETURN_YES;
		2086
		2087	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2088
		2089	if (rl.rlim_cur < limit)
		2090	{
		2091	rl.rlim_cur = limit;
		2092
		2093	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2094	rl.rlim_max = rl.rlim_cur;
		2095	}
		2096
		2097	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2098	XSRETURN_YES;
		2099
		2100	if (errno == EPERM)
		2101	{
		2102	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2103	/* our limit overflows a system-wide limit */
		2104	/* try an adaptive algorithm, but do not lower the hardlimit */
		2105	rl.rlim_max = 0;
		2106	for (bit = 0x40000000U; bit; bit >>= 1)
		2107	{
		2108	rl.rlim_max \|= bit;
		2109	rl.rlim_cur = rl.rlim_max;
		2110
		2111	/* nevr decrease the hard limit */
		2112	if (rl.rlim_max < orig_rlim_max)
		2113	break;
		2114
		2115	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2116	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2117	}
		2118
		2119	/* now, raise the soft limit to the max permitted */
		2120	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2121	{
		2122	rl.rlim_cur = rl.rlim_max;
		2123	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2124	errno = EPERM;
		2125	}
		2126	}
		2127	#endif
		2128	fail:
		2129	XSRETURN_UNDEF;
		2130	}
		2131
		2132	void _on_next_submit (SV *cb)
		2133	CODE:
		2134	SvREFCNT_dec (on_next_submit);
		2135	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2136
1259	PROTOTYPES: DISABLE	2137	PROTOTYPES: DISABLE
1260		2138
		2139	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2140
		2141	BOOT:
		2142	{
		2143	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2144	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2145	}
		2146
		2147	void
		2148	DESTROY (SV *self)
		2149	CODE:
		2150	{
		2151	aio_wd wd = SvAIO_WD (self);
		2152	#if HAVE_AT
		2153	{
		2154	SV *callback = &PL_sv_undef;
		2155	dREQ; /* clobbers next_pri :/ */
		2156	next_pri = req->pri; /* restore next_pri */
		2157	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2158	req->type = EIO_WD_CLOSE;
		2159	req->wd = wd;
		2160	REQ_SEND;
		2161	}
		2162	#else
		2163	eio_wd_close_sync (wd);
		2164	#endif
		2165	}
		2166
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2167	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262		2168
1263	void	2169	void
1264	cancel (aio_req_ornot req)	2170	cancel (aio_req_ornot req)
1265	PROTOTYPE:
1266	CODE:	2171	CODE:
1267	req_cancel (req);	2172	eio_cancel (req);
		2173
		2174	void
		2175	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2176	PPCODE:
		2177	{
		2178	if (GIMME_V != G_VOID)
		2179	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2180
		2181	if (items > 1)
		2182	{
		2183	SV *cb_cv = get_cb (callback);
		2184
		2185	SvREFCNT_dec (req->callback);
		2186	req->callback = SvREFCNT_inc (cb_cv);
		2187	}
		2188	}
1268		2189
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2190	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		2191
1271	void	2192	void
1272	add (aio_req grp, ...)	2193	add (aio_req grp, ...)
1273	PPCODE:	2194	PPCODE:
1274	{	2195	{
1275	int i;	2196	int i;
1276		2197
1277	if (grp->fd == 2)	2198	if (grp->int1 == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2199	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		2200
1280	for (i = 1; i < items; ++i )	2201	for (i = 1; i < items; ++i )
1281	{	2202	{
		2203	aio_req req;
		2204
1282	if (GIMME_V != G_VOID)	2205	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2206	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		2207
1285	aio_req req = SvAIO_REQ (ST (i));	2208	req = SvAIO_REQ (ST (i));
1286		2209
1287	if (req)	2210	if (req)
1288	{	2211	eio_grp_add (grp, req);
1289	++grp->length;
1290	req->grp = grp;
1291
1292	req->grp_prev = 0;
1293	req->grp_next = grp->grp_first;
1294
1295	if (grp->grp_first)
1296	grp->grp_first->grp_prev = req;
1297
1298	grp->grp_first = req;
1299	}
1300	}	2212	}
1301	}	2213	}
1302		2214
1303	void	2215	void
		2216	cancel_subs (aio_req_ornot req)
		2217	CODE:
		2218	req_cancel_subs (req);
		2219
		2220	void
1304	result (aio_req grp, ...)	2221	result (aio_req grp, ...)
		2222	CODE:
		2223	{
		2224	int i;
		2225	AV *av;
		2226
		2227	grp->errorno = errno;
		2228
		2229	av = newAV ();
		2230	av_extend (av, items - 1);
		2231
		2232	for (i = 1; i < items; ++i )
		2233	av_push (av, newSVsv (ST (i)));
		2234
		2235	SvREFCNT_dec (grp->sv1);
		2236	grp->sv1 = (SV *)av;
		2237	}
		2238
		2239	void
		2240	errno (aio_req grp, int errorno = errno)
		2241	CODE:
		2242	grp->errorno = errorno;
		2243
		2244	void
		2245	limit (aio_req grp, int limit)
1305	CODE:	2246	CODE:
1306	{	2247	eio_grp_limit (grp, limit);
1307	int i;
1308	AV *av = newAV ();
1309		2248
1310	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));
1312
1313	SvREFCNT_dec (grp->data);
1314	grp->data = (SV *)av;
1315	}
1316
1317	void	2249	void
1318	feeder_limit (aio_req grp, int limit)	2250	feed (aio_req grp, SV *callback = &PL_sv_undef)
1319	CODE:	2251	CODE:
1320	grp->fd2 = limit;
1321	aio_grp_feed (grp);
1322
1323	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:
1326	{	2252	{
1327	SvREFCNT_dec (grp->fh2);	2253	SvREFCNT_dec (grp->sv2);
1328	grp->fh2 = newSVsv (callback);	2254	grp->sv2 = newSVsv (callback);
		2255	grp->feed = aio_grp_feed;
1329		2256
1330	if (grp->fd2 <= 0)	2257	if (grp->int2 <= 0)
1331	grp->fd2 = 2;	2258	grp->int2 = 2;
1332		2259
1333	aio_grp_feed (grp);	2260	eio_grp_limit (grp, grp->int2);
1334	}	2261	}
1335		2262

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs. Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC