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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.294 by root, Sat Apr 9 19:34:05 2022 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"
		8	#include "perliol.h"
12		9
13	#include "autoconf/config.h"	10	#if !defined mg_findext
14		11	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
15	#include <pthread.h>	12	#endif
16		13
17	#include <stddef.h>	14	#include <stddef.h>
		15	#include <stdlib.h>
18	#include <errno.h>	16	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	17	#include <sys/types.h>
		18	#include <sys/socket.h>
22	#include <sys/stat.h>	19	#include <sys/stat.h>
23	#include <limits.h>	20	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	21	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	22	#include <sched.h>
28		23
29	#if HAVE_SENDFILE	24	/* the incompetent fool that created musl keeps __linux__, refuses
30	# if __linux	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	#undef utime
		81
		82	#define EIO_STRUCT_STAT struct _stati64
		83	#define EIO_STRUCT_STATI64
		84
		85	#else
		86
		87	#include <sys/time.h>
31	# include <sys/sendfile.h>	88	#include <sys/select.h>
32	# elif __freebsd	89	#include <sys/wait.h>
		90	#include <unistd.h>
		91	#include <utime.h>
		92	#include <signal.h>
		93
		94	#define EIO_STRUCT_STAT Stat_t
		95
		96	#endif
		97
		98	/*****************************************************************************/
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	#else
		103	# define expect(expr,value) (expr)
		104	#endif
		105
		106	#define expect_false(expr) expect ((expr) != 0, 0)
		107	#define expect_true(expr) expect ((expr) != 0, 1)
		108
		109	/*****************************************************************************/
		110
		111	#include "config.h"
		112
		113	#if HAVE_SYS_MKDEV_H
33	# include <sys/socket.h>	114	# include <sys/mkdev.h>
		115	#elif HAVE_SYS_SYSMACROS_H
		116	# include <sys/sysmacros.h>
		117	#endif
		118
		119	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		120	# include <sys/mman.h>
		121	#endif
		122
		123	#if HAVE_SYS_UIO_H
34	# include <sys/uio.h>	124	# include <sys/uio.h>
35	# elif __hpux	125	#endif
36	# include <sys/socket.h>	126
37	# elif __solaris /* not yet */	127	#if HAVE_ST_XTIMENSEC
		128	# define ATIMENSEC PL_statcache.st_atimensec
		129	# define MTIMENSEC PL_statcache.st_mtimensec
		130	# define CTIMENSEC PL_statcache.st_ctimensec
		131	#elif HAVE_ST_XTIMESPEC
		132	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		133	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		134	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		135	#else
		136	# define ATIMENSEC 0
		137	# define MTIMENSEC 0
		138	# define CTIMENSEC 0
		139	#endif
		140
		141	#if HAVE_ST_BIRTHTIMENSEC
		142	# define BTIMESEC PL_statcache.st_birthtime
		143	# define BTIMENSEC PL_statcache.st_birthtimensec
		144	#elif HAVE_ST_BIRTHTIMESPEC
		145	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		146	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		147	#else
		148	# define BTIMESEC 0
		149	# define BTIMENSEC 0
		150	#endif
		151
		152	#if HAVE_ST_GEN
		153	# define ST_GEN PL_statcache.st_gen
		154	#else
		155	# define ST_GEN 0
		156	#endif
		157
		158	#include "schmorp.h"
		159
		160	#if HAVE_EVENTFD
38	# include <sys/sendfile.h>	161	# include <sys/eventfd.h>
		162	#endif
		163
		164	#if HAVE_TIMERFD
		165	# include <sys/timerfd.h>
		166	#endif
		167
		168	#if HAVE_RLIMITS
		169	#include <sys/time.h>
		170	#include <sys/resource.h>
		171	#endif
		172
		173	typedef SV SV8; /* byte-sv, used for argument-checking */
		174	typedef int aio_rfd; /* read file desriptor */
		175	typedef int aio_wfd; /* write file descriptor */
		176
		177	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		178
		179	#define EIO_REQ_MEMBERS \
		180	SV *callback; \
		181	SV *sv1, *sv2; \
		182	SV *sv3, *sv4; \
		183	STRLEN stroffset; \
		184	SV *self;
		185
		186	#define EIO_NO_WRAPPERS 1
		187
		188	#include "libeio/eio.h"
		189
		190	static int req_invoke (eio_req *req);
		191	#define EIO_FINISH(req) req_invoke (req)
		192	static void req_destroy (eio_req *grp);
		193	#define EIO_DESTROY(req) req_destroy (req)
		194
		195	#include "libeio/eio.c"
		196
		197	#if !HAVE_POSIX_FADVISE
		198	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		199	#endif
		200
		201	#if !HAVE_POSIX_MADVISE
		202	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		203	#endif
		204
		205	#ifndef MAP_ANONYMOUS
		206	# ifdef MAP_ANON
		207	# define MAP_ANONYMOUS MAP_ANON
39	# else	208	# else
40	# error sendfile support requested but not available	209	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	210	# endif
42	#endif	211	#endif
43		212
44	/* used for struct dirent, AIX doesn't provide it */	213	#ifndef makedev
45	#ifndef NAME_MAX	214	# define makedev(maj,min) (((maj) << 8) | (min))
46	# define NAME_MAX 4096
47	#endif	215	#endif
		216	#ifndef major
		217	# define major(dev) ((dev) >> 8)
		218	#endif
		219	#ifndef minor
		220	# define minor(dev) ((dev) & 0xff)
		221	#endif
48		222
49	#if __ia64	223	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
50	# define STACKSIZE 65536	224	#ifdef __sun
		225	# undef PAGESIZE
		226	#endif
		227
		228	#if PAGESIZE <= 0
		229	# define PAGESIZE sysconf (_SC_PAGESIZE)
		230	#endif
		231
		232	/* solaris perl seems to declare a wrong syscall function that clashes with system includes */
		233	#ifdef __sun
		234	# undef HAVE_SYSCALL
		235	#endif
		236
		237	#if HAVE_SYSCALL
		238	#include <sys/syscall.h>
51	#else	239	#else
52	# define STACKSIZE 8192	240	# define syscall(nr,...) (errno = ENOSYS, -1)
		241	#endif
		242
		243	/*****************************************************************************/
		244
		245	#if !_POSIX_MAPPED_FILES
		246	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		247	# define munmap(addr,length) EIO_ENOSYS ()
		248	#endif
		249
		250	#if !_POSIX_MEMORY_PROTECTION
		251	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		252	#endif
		253
		254	#if !MREMAP_MAYMOVE
		255	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		256	#endif
		257
		258	#define FOREIGN_MAGIC PERL_MAGIC_ext
		259
		260	static int ecb_cold
		261	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		262	{
		263	int old_errno = errno;
		264	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		265	errno = old_errno;
		266
		267	mg->mg_obj = 0; /* just in case */
		268
		269	SvREADONLY_off (sv);
		270
		271	if (SvPVX (sv) != mg->mg_ptr)
		272	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		273
		274	SvCUR_set (sv, 0);
		275	SvPVX (sv) = 0;
		276	SvOK_off (sv);
		277
		278	return 0;
		279	}
		280
		281	static MGVTBL mmap_vtbl = {
		282	0, 0, 0, 0, mmap_free
		283	};
		284
		285	static int ecb_cold
		286	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
		287	{
		288	free (mg->mg_ptr);
		289	mg->mg_obj = 0; /* just in case */
		290
		291	SvREADONLY_off (sv);
		292
		293	if (SvPVX (sv) != mg->mg_ptr)
		294	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
		295
		296	SvCUR_set (sv, 0);
		297	SvPVX (sv) = 0;
		298	SvOK_off (sv);
		299
		300	return 0;
		301	}
		302
		303	static MGVTBL sysfree_vtbl = {
		304	0, 0, 0, 0, sysfree_free
		305	};
		306
		307	/*****************************************************************************/
		308
		309	/* helper: set scalar to foreign ptr with custom free */
		310	ecb_noinline
		311	static void
		312	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
		313	{
		314	sv_force_normal (sv);
		315
		316	/* we store the length in mg_obj, as namlen is I32 :/ */
		317	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
		318	->mg_obj = (SV *)length;
		319
		320	SvUPGRADE (sv, SVt_PV); /* nop... */
		321
		322	if (SvLEN (sv))
		323	Safefree (SvPVX (sv));
		324
		325	SvPVX (sv) = (char *)addr;
		326	SvCUR_set (sv, length);
		327	SvLEN_set (sv, 0);
		328	SvPOK_only (sv);
		329	}
		330
		331	static void
		332	sv_clear_foreign (SV *sv)
		333	{
		334	/* todo: iterate over magic and only free ours, but of course */
		335	/* the perl5porters will call that (correct) behaviour buggy */
		336	sv_unmagic (sv, FOREIGN_MAGIC);
		337	}
		338
		339	/*****************************************************************************/
		340
		341	/* defines all sorts of constants to 0 unless they are already defined */
		342	/* also provides const_iv_ and const_niv_ macros for them */
		343	#include "def0.h"
		344
		345	/*****************************************************************************/
		346
		347	static void
		348	fiemap (eio_req *req)
		349	{
		350	req->result = -1;
		351
		352	#if HAVE_FIEMAP
		353	/* assume some c99 */
		354	struct fiemap *fiemap = 0;
		355	size_t end_offset;
		356	int count = req->int3;
		357
		358	req->flags |= EIO_FLAG_PTR1_FREE;
		359
		360	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		361	/* increase in fixed steps */
		362	if (count < 0)
		363	count = 8;
		364
		365	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		366	errno = ENOMEM;
		367	if (!fiemap)
		368	return;
		369
		370	req->ptr1 = fiemap;
		371
		372	fiemap->fm_start = req->offs;
		373	fiemap->fm_length = req->size;
		374	fiemap->fm_flags = req->int2;
		375	fiemap->fm_extent_count = count;
		376
		377	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		378	return;
		379
		380	if (req->int3 >= 0 /* not autosizing */
		381	|| !fiemap->fm_mapped_extents /* no more extents */
		382	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		383	goto done;
		384
		385	/* else we have to loop -
		386	* it would be tempting (actually I tried that first) to just query the
		387	* number of extents needed, but linux often feels like not returning all
		388	* extents, without telling us it left any out. this complicates
		389	* this quite a bit.
		390	*/
		391
		392	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		393
		394	for (;;)
		395	{
		396	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		397	char scratch[3072];
		398	struct fiemap *incmap = (struct fiemap *)scratch;
		399
		400	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		401	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		402	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		403	incmap->fm_flags = fiemap->fm_flags;
		404	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		405
		406	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		407	return;
		408
		409	if (!incmap->fm_mapped_extents)
		410	goto done;
		411
		412	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		413	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		414	errno = ENOMEM;
		415	if (!fiemap)
		416	return;
		417
		418	req->ptr1 = fiemap;
		419
		420	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		421	{
		422	struct fiemap_extent *e = incmap->fm_extents + count;
		423
		424	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		425
		426	if (e->fe_logical >= end_offset)
		427	goto done;
		428
		429	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		430	goto done;
		431
		432	}
		433	}
		434
		435	done:
		436	req->result = 0;
		437
		438	#else
		439	errno = ENOSYS;
		440	#endif
		441	}
		442
		443	/*****************************************************************************/
		444
		445	static int close_fd; /* dummy fd to close fds via dup2 */
		446
		447	#if HAVE_STATX
		448	static struct statx stx;
		449	#define statx_offsetof(member) offsetof (struct statx, member)
		450	#define eio__statx statx
		451	#else
		452	#define statx_offsetof(member) 0
		453	#define eio__statx(dir,path,flags,mask,stx) EIO_ENOSYS()
53	#endif	454	#endif
54		455
55	enum {	456	enum {
56	REQ_QUIT,	457	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
57	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,
67	};	458	};
68		459
69	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"
71
72	typedef struct aio_cb
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;
77	SV *fh, *fh2;
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;
85	int type;
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89
90	unsigned char flags;
91	unsigned char pri;
92
93	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;
96
97	enum {
98	FLAG_CANCELLED = 0x01,
99	};
100
101	typedef aio_cb *aio_req;	460	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	461	typedef eio_req *aio_req_ornot;
		462	typedef eio_wd aio_wd;
103		463
104	enum {	464	static SV *on_next_submit;
105	PRI_MIN = -4,	465	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	466	static int max_outstanding;
117	static int respipe [2];
118		467
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	468	static s_epipe respipe;
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		469
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	470	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	471	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	472
		473	static void
		474	want_poll (void)
		475	{
		476	/* write a dummy byte to the pipe so fh becomes ready */
		477	s_epipe_signal (&respipe);
		478	}
		479
		480	static void
		481	done_poll (void)
		482	{
		483	/* read any signals sent by the worker threads */
		484	s_epipe_drain (&respipe);
		485	}
134		486
135	/* must be called at most once */	487	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	488	ecb_noinline
		489	static SV *
		490	req_sv (aio_req req, HV *stash)
137	{	491	{
138	if (!req->self)	492	if (!req->self)
139	{	493	{
140	req->self = (SV *)newHV ();	494	req->self = (SV *)newHV ();
141	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	495	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
142	}	496	}
143		497
144	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	498	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
145	}	499	}
146		500
147	static aio_req SvAIO_REQ (SV *sv)	501	static SV *
		502	newSVaio_wd (aio_wd wd)
		503	{
		504	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		505	}
		506
		507	ecb_noinline
		508	static aio_req
		509	SvAIO_REQ (SV *sv)
148	{	510	{
149	MAGIC *mg;	511	MAGIC *mg;
150		512
151	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	513	if (!SvROK (sv)
		514	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		515	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		516	&& SvSTASH (SvRV (sv)) != aio_req_stash
		517	&& !sv_derived_from (sv, "IO::AIO::REQ")))
152	croak ("object of class " AIO_REQ_KLASS " expected");	518	croak ("object of class IO::AIO::REQ expected");
153		519
154	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	520	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
155		521
156	return mg ? (aio_req)mg->mg_ptr : 0;	522	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	523	}
158		524
		525	static aio_wd
		526	SvAIO_WD (SV *sv)
		527	{
		528	if (!SvROK (sv)
		529	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		530	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		531	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		532
		533	return (aio_wd)(long)SvIVX (SvRV (sv));
		534	}
		535
		536	static SV *
		537	newmortalFH (int fd, int flags)
		538	{
		539	if (fd < 0)
		540	return &PL_sv_undef;
		541
		542	GV *gv = (GV *)sv_newmortal ();
		543	char sym[64];
		544	int symlen;
		545
		546	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		547	gv_init (gv, aio_stash, sym, symlen, 0);
		548
		549	symlen = snprintf (
		550	sym,
		551	sizeof (sym),
		552	"%s&=%d",
		553	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		554	fd
		555	);
		556
		557	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		558	? (SV *)gv : &PL_sv_undef;
		559	}
		560
		561	static void
159	static void aio_grp_feed (aio_req grp)	562	aio_grp_feed (aio_req grp)
160	{	563	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	564	if (grp->sv2 && SvOK (grp->sv2))
162	{	565	{
163	int old_len = grp->length;	566	dSP;
164		567
165	if (grp->fh2 && SvOK (grp->fh2))	568	ENTER;
		569	SAVETMPS;
		570	PUSHMARK (SP);
		571	XPUSHs (req_sv (grp, aio_grp_stash));
		572	PUTBACK;
		573	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		574	SPAGAIN;
		575	FREETMPS;
		576	LEAVE;
		577	}
		578	}
		579
		580	ecb_noinline
		581	static void
		582	req_submit (eio_req *req)
		583	{
		584	eio_submit (req);
		585
		586	if (expect_false (on_next_submit))
		587	{
		588	dSP;
		589	SV *cb = sv_2mortal (on_next_submit);
		590
		591	on_next_submit = 0;
		592
		593	PUSHMARK (SP);
		594	PUTBACK;
		595	call_sv (cb, G_DISCARD | G_EVAL);
		596	}
		597	}
		598
		599	static int
		600	req_invoke (eio_req *req)
		601	{
		602	if (req->flags & FLAG_SV2_RO_OFF)
		603	SvREADONLY_off (req->sv2);
		604
		605	if (!EIO_CANCELLED (req) && req->callback)
		606	{
		607	dSP;
		608	static SV *sv_result_cache; /* caches the result integer SV */
		609	SV *sv_result;
		610
		611	ENTER;
		612	SAVETMPS;
		613	PUSHMARK (SP);
		614	EXTEND (SP, 1);
		615
		616	/* do not recreate the result IV from scratch each time */
		617	if (expect_true (sv_result_cache))
166	{	618	{
167	dSP;	619	sv_result = sv_result_cache; sv_result_cache = 0;
168		620	SvIV_set (sv_result, req->result);
169	ENTER;	621	SvIOK_only (sv_result);
170	SAVETMPS;
171	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);
175	SPAGAIN;
176	FREETMPS;
177	LEAVE;
178	}	622	}
179		623	else
180	/* stop if no progress has been made */
181	if (old_len == grp->length)
182	{	624	{
183	SvREFCNT_dec (grp->fh2);	625	sv_result = newSViv (req->result);
184	grp->fh2 = 0;	626	SvREADONLY_on (sv_result);
185	break;
186	}	627	}
		628
		629	switch (req->type)
		630	{
		631	case EIO_WD_OPEN:
		632	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		633	break;
		634
		635	case EIO_READDIR:
		636	{
		637	SV *rv = &PL_sv_undef;
		638
		639	if (req->result >= 0)
		640	{
		641	int i;
		642	char *names = (char *)req->ptr2;
		643	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		644	AV *av = newAV ();
		645
		646	av_extend (av, req->result - 1);
		647
		648	for (i = 0; i < req->result; ++i)
		649	{
		650	if (req->int1 & EIO_READDIR_DENTS)
		651	{
		652	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		653
		654	if (req->int1 & EIO_READDIR_CUSTOM2)
		655	{
		656	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		657	AV *avent = newAV ();
		658
		659	av_extend (avent, 2);
		660
		661	if (!sv_type [ent->type])
		662	{
		663	sv_type [ent->type] = newSViv (ent->type);
		664	SvREADONLY_on (sv_type [ent->type]);
		665	}
		666
		667	av_store (avent, 0, namesv);
		668	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		669	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		670
		671	av_store (av, i, newRV_noinc ((SV *)avent));
		672	}
		673	else
		674	av_store (av, i, namesv);
		675
		676	++ent;
		677	}
		678	else
		679	{
		680	SV *name = newSVpv (names, 0);
		681	av_store (av, i, name);
		682	names += SvCUR (name) + 1;
		683	}
		684	}
		685
		686	rv = sv_2mortal (newRV_noinc ((SV *)av));
		687	}
		688
		689	PUSHs (rv);
		690
		691	if (req->int1 & EIO_READDIR_CUSTOM1)
		692	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		693	}
		694	break;
		695
		696	case EIO_OPEN:
		697	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		698	break;
		699
		700	case EIO_STATVFS:
		701	case EIO_FSTATVFS:
		702	{
		703	SV *rv = &PL_sv_undef;
		704
		705	#ifndef _WIN32
		706	if (req->result >= 0)
		707	{
		708	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		709	HV *hv = newHV ();
		710	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		711	* chooses to make it a struct.
		712	*/
		713	unsigned long fsid = 0;
		714	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		715
		716	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		717
		718	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		719	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		720	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		721	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		722	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		723	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		724	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		725	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		726	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		727	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		728	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		729	}
		730	#endif
		731
		732	PUSHs (rv);
		733	}
		734
		735	break;
		736
		737	case EIO_GROUP:
		738	req->int1 = 2; /* mark group as finished */
		739
		740	if (req->sv1)
		741	{
		742	int i;
		743	AV *av = (AV *)req->sv1;
		744
		745	EXTEND (SP, AvFILL (av) + 1);
		746	for (i = 0; i <= AvFILL (av); ++i)
		747	PUSHs (*av_fetch (av, i, 0));
		748	}
		749	break;
		750
		751	case EIO_NOP:
		752	case EIO_BUSY:
		753	break;
		754
		755	case EIO_READLINK:
		756	case EIO_REALPATH:
		757	if (req->result > 0)
		758	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		759	break;
		760
		761	case EIO_STAT:
		762	case EIO_LSTAT:
		763	case EIO_FSTAT:
		764	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		765
		766	if (!(PL_laststatval = req->result))
		767	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		768	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		769
		770	PUSHs (sv_result);
		771	break;
		772
		773	case EIO_SEEK:
		774	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		775	break;
		776
		777	case EIO_READ:
		778	{
		779	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		780	*SvEND (req->sv2) = 0;
		781	SvPOK_only (req->sv2);
		782	SvSETMAGIC (req->sv2);
		783	PUSHs (sv_result);
		784	}
		785	break;
		786
		787	case EIO_SLURP:
		788	{
		789	if (req->result >= 0)
		790	{
		791	/* if length was originally not known, we steal the malloc'ed memory */
		792	if (req->flags & EIO_FLAG_PTR2_FREE)
		793	{
		794	req->flags &= ~EIO_FLAG_PTR2_FREE;
		795	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		796	}
		797	else
		798	{
		799	SvCUR_set (req->sv2, req->result);
		800	*SvEND (req->sv2) = 0;
		801	SvPOK_only (req->sv2);
		802	}
		803
		804	SvSETMAGIC (req->sv2);
		805	}
		806
		807	PUSHs (sv_result);
		808	}
		809	break;
		810
		811	case EIO_CUSTOM:
		812	if (req->feed == fiemap)
		813	{
		814	#if HAVE_FIEMAP
		815	if (!req->result)
		816	{
		817	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		818
		819	if (fiemap->fm_extent_count)
		820	{
		821	AV *av = newAV ();
		822	int i;
		823
		824	while (fiemap->fm_mapped_extents)
		825	{
		826	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		827	AV *ext_av = newAV ();
		828
		829	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		830	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		831	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		832	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		833
		834	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		835	}
		836
		837	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		838	}
		839	else
		840	{
		841	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		842	PUSHs (sv_result);
		843	}
		844	}
		845	#endif
		846	}
		847	else
		848	PUSHs (sv_result);
		849	break;
		850
		851	#if 0
		852	case EIO_CLOSE:
		853	PerlIOUnix_refcnt_dec (req->int1);
		854	break;
		855	#endif
		856
		857	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		858	if (req->result > 0)
		859	SvIV_set (sv_result, 0);
		860	/* FALLTHROUGH */
		861
		862	default:
		863	PUSHs (sv_result);
		864	break;
		865	}
		866
		867	errno = req->errorno;
		868
		869	PUTBACK;
		870	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		871	SPAGAIN;
		872
		873	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		874	SvREFCNT_dec (sv_result);
		875	else
		876	sv_result_cache = sv_result;
		877
		878	FREETMPS;
		879	LEAVE;
		880
		881	PUTBACK;
187	}	882	}
188	}
189		883
190	static void aio_grp_dec (aio_req grp)	884	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	885	}
204		886
205	static void poll_wait ()	887	static void
		888	req_destroy (aio_req req)
206	{	889	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	pthread_mutex_lock (&reslock);
213	req = ress;
214	pthread_mutex_unlock (&reslock);
215
216	if (req)
217	return;
218
219	FD_ZERO(&rfd);
220	FD_SET(respipe [0], &rfd);
221
222	select (respipe [0] + 1, &rfd, 0, 0, 0);
223	}
224	}
225
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)
326	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	890	if (req->self)
342	{	891	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	892	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	893	SvREFCNT_dec (req->self);
345	}	894	}
346		895
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	896	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	897	SvREFCNT_dec (req->sv2);
		898	SvREFCNT_dec (req->sv3);
		899	SvREFCNT_dec (req->sv4);
350	SvREFCNT_dec (req->callback);	900	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352		901
353	if (req->type == REQ_READDIR && req->result >= 0)
354	free (req->data2ptr);
355
356	Safefree (req);	902	free (req);
357	}	903	}
358		904
359	static void req_cancel (aio_req req)	905	static void
		906	req_cancel_subs (aio_req grp)
360	{	907	{
361	req->flags |= FLAG_CANCELLED;
362
363	if (req->type == REQ_GROUP)	908	if (grp->type != EIO_GROUP)
		909	return;
		910
		911	SvREFCNT_dec (grp->sv2);
		912	grp->sv2 = 0;
		913
		914	eio_grp_cancel (grp);
		915	}
		916
		917	ecb_cold
		918	static void
		919	create_respipe (void)
		920	{
		921	if (s_epipe_renew (&respipe))
		922	croak ("IO::AIO: unable to initialize result pipe");
		923	}
		924
		925	static void
		926	poll_wait (void)
		927	{
		928	while (eio_nreqs ())
364	{	929	{
365	aio_req sub;	930	int size;
366		931
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	932	X_LOCK (EIO_POOL->reslock);
368	req_cancel (sub);	933	size = EIO_POOL->res_queue.size;
		934	X_UNLOCK (EIO_POOL->reslock);
		935
		936	if (size)
		937	return;
		938
		939	etp_maybe_start_thread (EIO_POOL);
		940
		941	s_epipe_wait (&respipe);
369	}	942	}
370	}	943	}
371		944
372	static int poll_cb ()	945	static int
		946	poll_cb (void)
373	{	947	{
374	dSP;
375	int count = 0;
376	int do_croak = 0;
377	aio_req req;
378
379	for (;;)	948	for (;;)
380	{	949	{
381	pthread_mutex_lock (&reslock);	950	int res = eio_poll ();
382	req = ress;
383		951
384	if (req)	952	if (res > 0)
		953	croak (0);
		954
		955	if (!max_outstanding || max_outstanding > eio_nreqs ())
		956	return res;
		957
		958	poll_wait ();
		959	}
		960	}
		961
		962	ecb_cold
		963	static void
		964	reinit (void)
		965	{
		966	create_respipe ();
		967
		968	if (eio_init (want_poll, done_poll) < 0)
		969	croak ("IO::AIO: unable to initialise eio library");
		970	}
		971
		972	/*****************************************************************************/
		973
		974	static SV *
		975	get_cb (SV *cb_sv)
		976	{
		977	SvGETMAGIC (cb_sv);
		978	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		979	}
		980
		981	ecb_noinline
		982	static aio_req ecb_noinline
		983	dreq (SV *callback)
		984	{
		985	SV *cb_cv;
		986	aio_req req;
		987	int req_pri = next_pri;
		988	next_pri = EIO_PRI_DEFAULT;
		989
		990	cb_cv = get_cb (callback);
		991
		992	req = calloc (sizeof (*req), 1);
		993	if (!req)
		994	croak ("out of memory during eio_req allocation");
		995
		996	req->callback = SvREFCNT_inc (cb_cv);
		997	req->pri = req_pri;
		998
		999	return req;
		1000	}
		1001
		1002	#define dREQ \
		1003	aio_req req = dreq (callback); \
		1004
		1005	#define REQ_SEND \
		1006	PUTBACK; \
		1007	req_submit (req); \
		1008	SPAGAIN; \
		1009	\
		1010	if (GIMME_V != G_VOID) \
		1011	XPUSHs (req_sv (req, aio_req_stash));
		1012
		1013	/* *wdsv, *pathsv, *wd and *ptr must be 0-initialized */
		1014	ecb_inline
		1015	void
		1016	req_set_path (SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		1017	{
		1018	if (expect_false (SvROK (path)))
		1019	{
		1020	SV *rv = SvRV (path);
		1021	SV *wdob;
		1022
		1023	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
385	{	1024	{
386	ress = req->next;	1025	path = AvARRAY (rv)[1];
		1026	wdob = AvARRAY (rv)[0];
387		1027
388	if (!ress)	1028	if (SvOK (wdob))
389	{	1029	{
390	/* read any signals sent by the worker threads */	1030	*wd = SvAIO_WD (wdob);
391	char buf [32];	1031	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}	1032	}
		1033	else
		1034	*wd = EIO_INVALID_WD;
397	}	1035	}
398		1036	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;
403
404	--nreqs;
405
406	if (req->type == REQ_QUIT)
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{	1037	{
410	req->fd = 1; /* mark request as delayed */	1038	*wd = (aio_wd)(long)SvIVX (rv);
411	continue;	1039	*wdsv = SvREFCNT_inc_NN (rv);
		1040	*ptr = ".";
		1041	return; /* path set to "." */
412	}	1042	}
413	else	1043	else
414	{	1044	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	1045	}
435		1046
436	return count;	1047	*pathsv = newSVsv (path);
		1048	*ptr = SvPVbyte_nolen (*pathsv);
437	}	1049	}
438		1050
439	static void *aio_proc(void *arg);	1051	ecb_noinline
440		1052	static void
441	static void start_thread (void)	1053	req_set_path1 (aio_req req, SV *path)
442	{	1054	{
443	sigset_t fullsigset, oldsigset;	1055	req_set_path (path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}	1056	}
459		1057
460	static void req_send (aio_req req)	1058	ecb_noinline
		1059	static void
		1060	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
461	{	1061	{
462	while (started < wanted && nreqs >= started)	1062	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
463	start_thread ();
464		1063
465	++nreqs;	1064	switch (SvTYPE (rv))
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{	1065	{
473	reqe->next = req;	1066	case SVt_PVIO:
474	reqe = req;	1067	case SVt_PVLV:
		1068	case SVt_PVGV:
		1069	req->type = type_fh;
		1070	req->sv1 = newSVsv (fh_or_path);
		1071	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1072	break;
		1073
		1074	default:
		1075	req->type = type_path;
		1076	req_set_path1 (req, fh_or_path);
		1077	break;
475	}	1078	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}
528
529	static void create_pipe ()
530	{
531	if (pipe (respipe))
532	croak ("unable to initialize result pipe");
533
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
535	croak ("cannot set result pipe to nonblocking mode");
536
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
538	croak ("cannot set result pipe to nonblocking mode");
539	}	1079	}
540		1080
541	/*****************************************************************************/	1081	/*****************************************************************************/
542	/* work around various missing functions */
543		1082
544	#if !HAVE_PREADWRITE	1083	static void
545	# define pread aio_pread	1084	ts_set (struct timespec *ts, NV value)
546	# define pwrite aio_pwrite
547
548	/*
549	* make our pread/pwrite safe against themselves, but not against
550	* normal read/write by using a mutex. slows down execution a lot,
551	* but that's your problem, not mine.
552	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
554
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{	1085	{
557	ssize_t res;	1086	ts->tv_sec = value;
558	off_t ooffset;	1087	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
559
560	pthread_mutex_lock (&preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);
566
567	return res;
568	}	1088	}
569		1089
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1090	static NV
		1091	ts_get (const struct timespec *ts)
571	{	1092	{
572	ssize_t res;	1093	return ts->tv_sec + ts->tv_nsec * 1e-9;
573	off_t ooffset;
574
575	pthread_mutex_lock (&preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);
581
582	return res;
583	}	1094	}
584	#endif
585		1095
586	#if !HAVE_FDATASYNC	1096	/*****************************************************************************/
587	# define fdatasync fsync
588	#endif
589		1097
590	#if !HAVE_READAHEAD	1098	XS(boot_IO__AIO) ecb_cold;
591	# define readahead aio_readahead
592		1099
593	static ssize_t readahead (int fd, off_t offset, size_t count)	1100	MODULE = IO::AIO PACKAGE = IO::AIO
594	{
595	char readahead_buf[4096];
596		1101
597	while (count > 0)	1102	PROTOTYPES: ENABLE
598	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
600		1103
601	pread (fd, readahead_buf, len, offset);	1104	BOOT:
602	offset += len;
603	count -= len;
604	}
605
606	errno = 0;
607	}
608	#endif
609
610	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r
612
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
614
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{	1105	{
617	struct dirent *e;	1106	static const struct {
618	int errorno;	1107	const char *name;
		1108	IV iv;
		1109	} *civ, const_iv[] = {
		1110	# define const_niv(name, value) { # name, (IV) value },
		1111	# define const_iv(name) { # name, (IV) name },
		1112	# define const_eio(name) { # name, (IV) EIO_ ## name },
619		1113
620	pthread_mutex_lock (&readdirlock);	1114	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1115	/* the first block can be undef if missing */
		1116	const_iv (ENOSYS)
		1117	const_iv (EXDEV)
		1118	const_iv (EBADR)
621		1119
622	e = readdir (dirp);	1120	/* for lseek */
623	errorno = errno;	1121	const_iv (SEEK_DATA)
		1122	const_iv (SEEK_HOLE)
624		1123
625	if (e)	1124	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
626	{	1125	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
627	*res = ent;	1126	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
628	strcpy (ent->d_name, e->d_name);	1127	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
629	}	1128	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
630	else	1129	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
631	*res = 0;
632		1130
633	pthread_mutex_unlock (&readdirlock);	1131	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1132	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1133	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1134	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1135	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
634		1136
635	errno = errorno;	1137	/* the second block will be 0 when missing */
636	return e ? 0 : -1;	1138	const_iv (O_ACCMODE)
637	}
638	#endif
639		1139
640	/* sendfile always needs emulation */	1140	const_iv (O_RDONLY)
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1141	const_iv (O_WRONLY)
642	{	1142	const_iv (O_RDWR)
643	ssize_t res;	1143	const_iv (O_CREAT)
		1144	const_iv (O_TRUNC)
		1145	const_iv (O_EXCL)
		1146	const_iv (O_APPEND)
644		1147
645	if (!count)	1148	const_iv (O_ASYNC)
646	return 0;	1149	const_iv (O_DIRECT)
		1150	const_iv (O_NOATIME)
647		1151
648	#if HAVE_SENDFILE	1152	const_iv (O_CLOEXEC)
649	# if __linux	1153	const_iv (O_NOCTTY)
650	res = sendfile (ofd, ifd, &offset, count);	1154	const_iv (O_NOFOLLOW)
		1155	const_iv (O_NONBLOCK)
		1156	const_iv (O_EXEC)
		1157	const_iv (O_SEARCH)
		1158	const_iv (O_DIRECTORY)
		1159	const_iv (O_DSYNC)
		1160	const_iv (O_RSYNC)
		1161	const_iv (O_SYNC)
		1162	const_iv (O_PATH)
		1163	const_iv (O_TMPFILE)
		1164	const_iv (O_TTY_INIT)
651		1165
652	# elif __freebsd	1166	const_iv (S_IFIFO)
653	/*	1167	const_iv (S_IFCHR)
654	* Of course, the freebsd sendfile is a dire hack with no thoughts	1168	const_iv (S_IFBLK)
655	* wasted on making it similar to other I/O functions.	1169	const_iv (S_IFLNK)
656	*/	1170	const_iv (S_IFREG)
		1171	const_iv (S_IFDIR)
		1172	const_iv (S_IFWHT)
		1173	const_iv (S_IFSOCK)
		1174	const_iv (S_IFMT)
		1175
		1176	const_iv (ST_RDONLY)
		1177	const_iv (ST_NOSUID)
		1178	const_iv (ST_NODEV)
		1179	const_iv (ST_NOEXEC)
		1180	const_iv (ST_SYNCHRONOUS)
		1181	const_iv (ST_MANDLOCK)
		1182	const_iv (ST_WRITE)
		1183	const_iv (ST_APPEND)
		1184	const_iv (ST_IMMUTABLE)
		1185	const_iv (ST_NOATIME)
		1186	const_iv (ST_NODIRATIME)
		1187	const_iv (ST_RELATIME)
		1188
		1189	const_iv (PROT_NONE)
		1190	const_iv (PROT_EXEC)
		1191	const_iv (PROT_READ)
		1192	const_iv (PROT_WRITE)
		1193
		1194	const_iv (MAP_PRIVATE)
		1195	const_iv (MAP_SHARED)
		1196	const_iv (MAP_FIXED)
		1197	const_iv (MAP_ANONYMOUS)
		1198
		1199	/* linuxish */
		1200	const_iv (MAP_LOCKED)
		1201	const_iv (MAP_NORESERVE)
		1202	const_iv (MAP_POPULATE)
		1203	const_iv (MAP_NONBLOCK)
		1204	const_iv (MAP_GROWSDOWN)
		1205	const_iv (MAP_32BIT)
		1206	const_iv (MAP_HUGETLB)
		1207	const_iv (MAP_STACK)
		1208	const_iv (MAP_FIXED_NOREPLACE)
		1209	const_iv (MAP_SHARED_VALIDATE)
		1210	const_iv (MAP_SYNC)
		1211	const_iv (MAP_UNINITIALIZED)
		1212
		1213	const_iv (MREMAP_MAYMOVE)
		1214	const_iv (MREMAP_FIXED)
		1215
		1216	const_iv (MSG_CMSG_CLOEXEC)
		1217	const_iv (SOCK_CLOEXEC)
		1218
		1219	const_iv (F_DUPFD_CLOEXEC)
		1220
		1221	const_iv (F_ADD_SEALS)
		1222	const_iv (F_GET_SEALS)
		1223	const_iv (F_SEAL_SEAL)
		1224	const_iv (F_SEAL_SHRINK)
		1225	const_iv (F_SEAL_GROW)
		1226	const_iv (F_SEAL_WRITE)
		1227
		1228	const_iv (F_OFD_GETLK)
		1229	const_iv (F_OFD_SETLK)
		1230	const_iv (F_OFD_GETLKW)
		1231
		1232	const_iv (FIFREEZE)
		1233	const_iv (FITHAW)
		1234	const_iv (FITRIM)
		1235	const_iv (FICLONE)
		1236	const_iv (FICLONERANGE)
		1237	const_iv (FIDEDUPERANGE)
		1238
		1239	const_iv (FS_IOC_GETFLAGS)
		1240	const_iv (FS_IOC_SETFLAGS)
		1241	const_iv (FS_IOC_GETVERSION)
		1242	const_iv (FS_IOC_SETVERSION)
		1243	const_iv (FS_IOC_FIEMAP)
		1244	const_iv (FS_IOC_FSGETXATTR)
		1245	const_iv (FS_IOC_FSSETXATTR)
		1246	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1247	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1248	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1249
		1250	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1251
		1252	const_iv (FS_SECRM_FL)
		1253	const_iv (FS_UNRM_FL)
		1254	const_iv (FS_COMPR_FL)
		1255	const_iv (FS_SYNC_FL)
		1256	const_iv (FS_IMMUTABLE_FL)
		1257	const_iv (FS_APPEND_FL)
		1258	const_iv (FS_NODUMP_FL)
		1259	const_iv (FS_NOATIME_FL)
		1260	const_iv (FS_DIRTY_FL)
		1261	const_iv (FS_COMPRBLK_FL)
		1262	const_iv (FS_NOCOMP_FL)
		1263	const_iv (FS_ENCRYPT_FL)
		1264	const_iv (FS_BTREE_FL)
		1265	const_iv (FS_INDEX_FL)
		1266	const_iv (FS_JOURNAL_DATA_FL)
		1267	const_iv (FS_NOTAIL_FL)
		1268	const_iv (FS_DIRSYNC_FL)
		1269	const_iv (FS_TOPDIR_FL)
		1270	const_iv (FS_FL_USER_MODIFIABLE)
		1271
		1272	const_iv (FS_XFLAG_REALTIME)
		1273	const_iv (FS_XFLAG_PREALLOC)
		1274	const_iv (FS_XFLAG_IMMUTABLE)
		1275	const_iv (FS_XFLAG_APPEND)
		1276	const_iv (FS_XFLAG_SYNC)
		1277	const_iv (FS_XFLAG_NOATIME)
		1278	const_iv (FS_XFLAG_NODUMP)
		1279	const_iv (FS_XFLAG_RTINHERIT)
		1280	const_iv (FS_XFLAG_PROJINHERIT)
		1281	const_iv (FS_XFLAG_NOSYMLINKS)
		1282	const_iv (FS_XFLAG_EXTSIZE)
		1283	const_iv (FS_XFLAG_EXTSZINHERIT)
		1284	const_iv (FS_XFLAG_NODEFRAG)
		1285	const_iv (FS_XFLAG_FILESTREAM)
		1286	const_iv (FS_XFLAG_DAX)
		1287	const_iv (FS_XFLAG_HASATTR)
		1288
		1289	const_iv (FIEMAP_FLAG_SYNC)
		1290	const_iv (FIEMAP_FLAG_XATTR)
		1291	const_iv (FIEMAP_FLAGS_COMPAT)
		1292	const_iv (FIEMAP_EXTENT_LAST)
		1293	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1294	const_iv (FIEMAP_EXTENT_DELALLOC)
		1295	const_iv (FIEMAP_EXTENT_ENCODED)
		1296	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1297	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1298	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1299	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1300	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1301	const_iv (FIEMAP_EXTENT_MERGED)
		1302	const_iv (FIEMAP_EXTENT_SHARED)
		1303
		1304	const_iv (SPLICE_F_MOVE)
		1305	const_iv (SPLICE_F_NONBLOCK)
		1306	const_iv (SPLICE_F_MORE)
		1307	const_iv (SPLICE_F_GIFT)
		1308
		1309	const_iv (EFD_CLOEXEC)
		1310	const_iv (EFD_NONBLOCK)
		1311	const_iv (EFD_SEMAPHORE)
		1312
		1313	const_iv (MFD_CLOEXEC)
		1314	const_iv (MFD_ALLOW_SEALING)
		1315	const_iv (MFD_HUGETLB)
		1316	const_iv (MFD_HUGETLB_2MB)
		1317	const_iv (MFD_HUGETLB_1GB)
		1318
		1319	const_iv (CLOCK_REALTIME)
		1320	const_iv (CLOCK_MONOTONIC)
		1321	const_iv (CLOCK_BOOTTIME)
		1322	const_iv (CLOCK_REALTIME_ALARM)
		1323	const_iv (CLOCK_BOOTTIME_ALARM)
		1324
		1325	const_iv (TFD_NONBLOCK)
		1326	const_iv (TFD_CLOEXEC)
		1327
		1328	const_iv (TFD_TIMER_ABSTIME)
		1329	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1330
		1331	const_iv (STATX_TYPE)
		1332	const_iv (STATX_MODE)
		1333	const_iv (STATX_NLINK)
		1334	const_iv (STATX_UID)
		1335	const_iv (STATX_GID)
		1336	const_iv (STATX_ATIME)
		1337	const_iv (STATX_MTIME)
		1338	const_iv (STATX_CTIME)
		1339	const_iv (STATX_INO)
		1340	const_iv (STATX_SIZE)
		1341	const_iv (STATX_BLOCKS)
		1342	const_iv (STATX_BASIC_STATS)
		1343	const_iv (STATX_ALL)
		1344	const_iv (STATX_BTIME)
		1345	const_iv (STATX_ATTR_COMPRESSED)
		1346	const_iv (STATX_ATTR_IMMUTABLE)
		1347	const_iv (STATX_ATTR_APPEND)
		1348	const_iv (STATX_ATTR_NODUMP)
		1349	const_iv (STATX_ATTR_ENCRYPTED)
		1350	const_iv (STATX_ATTR_AUTOMOUNT)
		1351
		1352	const_iv (AT_FDCWD)
		1353	const_iv (AT_SYMLINK_NOFOLLOW)
		1354	const_iv (AT_EACCESS)
		1355	const_iv (AT_REMOVEDIR)
		1356	const_iv (AT_SYMLINK_FOLLOW)
		1357	const_iv (AT_NO_AUTOMOUNT)
		1358	const_iv (AT_EMPTY_PATH)
		1359	const_iv (AT_STATX_SYNC_TYPE)
		1360	const_iv (AT_STATX_AS_STAT)
		1361	const_iv (AT_STATX_FORCE_SYNC)
		1362	const_iv (AT_STATX_DONT_SYNC)
		1363	const_iv (AT_RECURSIVE)
		1364
		1365	const_iv (OPEN_TREE_CLONE)
		1366
		1367	const_iv (FSOPEN_CLOEXEC)
		1368
		1369	const_iv (FSPICK_CLOEXEC)
		1370	const_iv (FSPICK_SYMLINK_NOFOLLOW)
		1371	const_iv (FSPICK_NO_AUTOMOUNT)
		1372	const_iv (FSPICK_EMPTY_PATH)
		1373
		1374	const_iv (MOVE_MOUNT_F_SYMLINKS)
		1375	const_iv (MOVE_MOUNT_F_AUTOMOUNTS)
		1376	const_iv (MOVE_MOUNT_F_EMPTY_PATH)
		1377	const_iv (MOVE_MOUNT_T_SYMLINKS)
		1378	const_iv (MOVE_MOUNT_T_AUTOMOUNTS)
		1379	const_iv (MOVE_MOUNT_T_EMPTY_PATH)
		1380
		1381	/* waitid */
		1382	const_iv (P_PID)
		1383	const_iv (P_PIDFD)
		1384	const_iv (P_PGID)
		1385	const_iv (P_ALL)
		1386
		1387	const_iv (FSCONFIG_SET_FLAG)
		1388	const_iv (FSCONFIG_SET_STRING)
		1389	const_iv (FSCONFIG_SET_BINARY)
		1390	const_iv (FSCONFIG_SET_PATH)
		1391	const_iv (FSCONFIG_SET_PATH_EMPTY)
		1392	const_iv (FSCONFIG_SET_FD)
		1393	const_iv (FSCONFIG_CMD_CREATE)
		1394	const_iv (FSCONFIG_CMD_RECONFIGURE)
		1395
		1396	const_iv (MOUNT_ATTR_RDONLY)
		1397	const_iv (MOUNT_ATTR_NOSUID)
		1398	const_iv (MOUNT_ATTR_NODEV)
		1399	const_iv (MOUNT_ATTR_NOEXEC)
		1400	const_iv (MOUNT_ATTR__ATIME)
		1401	const_iv (MOUNT_ATTR_RELATIME)
		1402	const_iv (MOUNT_ATTR_NOATIME)
		1403	const_iv (MOUNT_ATTR_STRICTATIME)
		1404	const_iv (MOUNT_ATTR_NODIRATIME)
		1405
		1406	/* these are libeio constants, and are independent of gendef0 */
		1407	const_eio (SEEK_SET)
		1408	const_eio (SEEK_CUR)
		1409	const_eio (SEEK_END)
		1410
		1411	const_eio (MCL_FUTURE)
		1412	const_eio (MCL_CURRENT)
		1413	const_eio (MCL_ONFAULT)
		1414
		1415	const_eio (MS_ASYNC)
		1416	const_eio (MS_INVALIDATE)
		1417	const_eio (MS_SYNC)
		1418
		1419	const_eio (MT_MODIFY)
		1420
		1421	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1422	const_eio (SYNC_FILE_RANGE_WRITE)
		1423	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1424
		1425	const_eio (FALLOC_FL_KEEP_SIZE)
		1426	const_eio (FALLOC_FL_PUNCH_HOLE)
		1427	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1428	const_eio (FALLOC_FL_ZERO_RANGE)
		1429	const_eio (FALLOC_FL_INSERT_RANGE)
		1430	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1431
		1432	const_eio (RENAME_NOREPLACE)
		1433	const_eio (RENAME_EXCHANGE)
		1434	const_eio (RENAME_WHITEOUT)
		1435
		1436	const_eio (READDIR_DENTS)
		1437	const_eio (READDIR_DIRS_FIRST)
		1438	const_eio (READDIR_STAT_ORDER)
		1439	const_eio (READDIR_FOUND_UNKNOWN)
		1440
		1441	const_eio (DT_UNKNOWN)
		1442	const_eio (DT_FIFO)
		1443	const_eio (DT_CHR)
		1444	const_eio (DT_DIR)
		1445	const_eio (DT_BLK)
		1446	const_eio (DT_REG)
		1447	const_eio (DT_LNK)
		1448	const_eio (DT_SOCK)
		1449	const_eio (DT_WHT)
		1450	};
		1451
		1452	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1453	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1454	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1455	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1456
		1457	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1458	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1459
		1460	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1461
		1462	/* allocate dummy pipe fd for aio_close */
657	{	1463	{
658	off_t sbytes;	1464	int pipefd [2];
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		1465
661	if (res < 0 && sbytes)	1466	if (
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1467	#ifdef _WIN32
663	res = sbytes;	1468	_pipe (pipefd, 1, _O_BINARY) < 0
		1469	#else
		1470	pipe (pipefd) < 0
		1471	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1472	#endif
		1473	|| close (pipefd [1]) < 0
		1474	)
		1475	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1476
		1477	close_fd = pipefd [0];
664	}	1478	}
665		1479
666	# elif __hpux	1480	reinit ();
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	1481	}
668		1482
669	# elif __solaris	1483	void
		1484	reinit ()
		1485	PROTOTYPE:
		1486
		1487	void
		1488	max_poll_reqs (unsigned int nreqs)
		1489	PROTOTYPE: $
		1490	CODE:
		1491	eio_set_max_poll_reqs (nreqs);
		1492
		1493	void
		1494	max_poll_time (double nseconds)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	eio_set_max_poll_time (nseconds);
		1498
		1499	void
		1500	min_parallel (unsigned int nthreads)
		1501	PROTOTYPE: $
		1502	CODE:
		1503	eio_set_min_parallel (nthreads);
		1504
		1505	void
		1506	max_parallel (unsigned int nthreads)
		1507	PROTOTYPE: $
		1508	CODE:
		1509	eio_set_max_parallel (nthreads);
		1510
		1511	void
		1512	max_idle (unsigned int nthreads)
		1513	PROTOTYPE: $
		1514	CODE:
		1515	eio_set_max_idle (nthreads);
		1516
		1517	void
		1518	idle_timeout (unsigned int seconds)
		1519	PROTOTYPE: $
		1520	CODE:
		1521	eio_set_idle_timeout (seconds);
		1522
		1523	void
		1524	max_outstanding (unsigned int maxreqs)
		1525	PROTOTYPE: $
		1526	CODE:
		1527	max_outstanding = maxreqs;
		1528
		1529	void
		1530	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1531	PPCODE:
		1532	{
		1533	dREQ;
		1534
		1535	req->type = EIO_WD_OPEN;
		1536	req_set_path1 (req, pathname);
		1537
		1538	REQ_SEND;
		1539	}
		1540
		1541	void
		1542	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1543	PPCODE:
		1544	{
		1545	dREQ;
		1546
		1547	req->type = EIO_OPEN;
		1548	req_set_path1 (req, pathname);
		1549	req->int1 = flags;
		1550	req->int2 = mode;
		1551
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1557	ALIAS:
		1558	aio_fsync = EIO_FSYNC
		1559	aio_fdatasync = EIO_FDATASYNC
		1560	aio_syncfs = EIO_SYNCFS
		1561	PPCODE:
		1562	{
		1563	int fd = s_fileno_croak (fh, 0);
		1564	dREQ;
		1565
		1566	req->type = ix;
		1567	req->sv1 = newSVsv (fh);
		1568	req->int1 = fd;
		1569
		1570	REQ_SEND;
		1571	}
		1572
		1573	void
		1574	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1575	PPCODE:
		1576	{
		1577	int fd = s_fileno_croak (fh, 0);
		1578	dREQ;
		1579
		1580	req->type = EIO_SYNC_FILE_RANGE;
		1581	req->sv1 = newSVsv (fh);
		1582	req->int1 = fd;
		1583	req->offs = offset;
		1584	req->size = nbytes;
		1585	req->int2 = flags;
		1586
		1587	REQ_SEND;
		1588	}
		1589
		1590	void
		1591	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1592	PPCODE:
		1593	{
		1594	int fd = s_fileno_croak (fh, 0);
		1595	dREQ;
		1596
		1597	req->type = EIO_FALLOCATE;
		1598	req->sv1 = newSVsv (fh);
		1599	req->int1 = fd;
		1600	req->int2 = mode;
		1601	req->offs = offset;
		1602	req->size = len;
		1603
		1604	REQ_SEND;
		1605	}
		1606
		1607	void
		1608	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1609	PPCODE:
		1610	{
		1611	int fd = s_fileno_croak (fh, 0);
		1612	dREQ;
		1613	#if 0
		1614	/* partially duplicate logic in s_fileno */
		1615	SvGETMAGIC (fh);
		1616
		1617	if (SvROK (fh))
670	{	1618	{
671	struct sendfilevec vec;	1619	fh = SvRV (fh);
672	size_t sbytes;	1620	SvGETMAGIC (fh);
673
674	vec.sfv_fd = ifd;
675	vec.sfv_flag = 0;
676	vec.sfv_off = offset;
677	vec.sfv_len = count;
678
679	res = sendfilev (ofd, &vec, 1, &sbytes);
680
681	if (res < 0 && sbytes)
682	res = sbytes;
683	}	1621	}
684		1622
685	# endif	1623	if (SvTYPE (fh) == SVt_PVGV)
686	#else
687	res = -1;
688	errno = ENOSYS;
689	#endif
690
691	if (res < 0
692	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
693	#if __solaris
694	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
695	#endif
696	)
697	)
698	{
699	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];
701	res = 0;
702
703	while (count)
704	{
705	ssize_t cnt;
706
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
708
709	if (cnt <= 0)
710	{
711	if (cnt && !res) res = -1;
712	break;
713	}
714
715	cnt = write (ofd, buf, cnt);
716
717	if (cnt <= 0)
718	{
719	if (cnt && !res) res = -1;
720	break;
721	}
722
723	offset += cnt;
724	res += cnt;
725	count -= cnt;
726	}
727	}
728
729	return res;
730	}
731
732	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)
734	{
735	DIR *dirp = opendir (path);
736	union
737	{
738	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;
741	struct dirent *entp;
742	char *name, *names;
743	int memlen = 4096;
744	int memofs = 0;
745	int res = 0;
746	int errorno;
747
748	if (!dirp)
749	return -1;
750
751	names = malloc (memlen);
752
753	for (;;)
754	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);
756
757	if (!entp)
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805
806	for (;;)
807	{
808	req = reqs;
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815
816	if (req)
817	break;
818
819	pthread_cond_wait (&reqwait, &reqlock);
820	}
821
822	pthread_mutex_unlock (&reqlock);
823
824	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826
827	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)
829	{	1624	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1625	/* perl filehandle */
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1626	PerlIOUnix_refcnt_inc (fd);
		1627	do_close ((GV *)fh, 1);
832		1628
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1629	req->type = EIO_CLOSE;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1630	req->int1 = fd;
835		1631	/*req->sv2 = newSVsv (fh);*/ /* since we stole the fd, no need to keep the fh */
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
839
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
847
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
851
852	case REQ_SLEEP:
853	{
854	struct timeval tv;
855
856	tv.tv_sec = req->fd;
857	tv.tv_usec = req->fd2;
858
859	req->result = select (0, 0, 0, 0, &tv);
860	}
861
862	case REQ_GROUP:
863	case REQ_NOP:
864	case REQ_QUIT:
865	break;
866
867	default:
868	req->result = ENOSYS;
869	break;
870	}	1632	}
871
872	req->errorno = errno;
873
874	pthread_mutex_lock (&reslock);
875
876	req->next = 0;
877
878	if (rese)
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else	1633	else
		1634	#endif
884	{	1635	{
885	rese = ress = req;	1636	/* fd number */
886		1637	req->type = EIO_DUP2;
887	/* write a dummy byte to the pipe so fh becomes ready */	1638	req->int1 = close_fd;
888	write (respipe [1], &respipe, 1);	1639	req->sv2 = newSVsv (fh);
		1640	req->int2 = fd;
889	}	1641	}
890		1642
891	pthread_mutex_unlock (&reslock);	1643	REQ_SEND;
892	}
893	while (type != REQ_QUIT);
894
895	return 0;
896	}	1644	}
897		1645
898	/*****************************************************************************/
899
900	static void atfork_prepare (void)
901	{
902	pthread_mutex_lock (&reqlock);
903	pthread_mutex_lock (&reslock);
904	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);
906	#endif
907	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);
909	#endif
910	}
911
912	static void atfork_parent (void)
913	{
914	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);
916	#endif
917	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);
919	#endif
920	pthread_mutex_unlock (&reslock);
921	pthread_mutex_unlock (&reqlock);
922	}
923
924	static void atfork_child (void)
925	{
926	aio_req prv;
927
928	started = 0;
929
930	while (reqs)
931	{
932	prv = reqs;
933	reqs = prv->next;
934	req_free (prv);
935	}
936
937	reqs = reqe = 0;
938
939	while (ress)
940	{
941	prv = ress;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();
951
952	atfork_parent ();
953	}
954
955	#define dREQ \
956	aio_req req; \
957	int req_pri = next_pri; \
958	next_pri = DEFAULT_PRI + PRI_BIAS; \
959	\
960	if (SvOK (callback) && !SvROK (callback)) \
961	croak ("callback must be undef or of reference type"); \
962	\
963	Newz (0, req, 1, aio_cb); \
964	if (!req) \
965	croak ("out of memory during aio_req allocation"); \
966	\
967	req->callback = newSVsv (callback); \
968	req->pri = req_pri
969
970	#define REQ_SEND \
971	req_send (req); \
972	\
973	if (GIMME_V != G_VOID) \
974	XPUSHs (req_sv (req, AIO_REQ_KLASS));
975
976	MODULE = IO::AIO PACKAGE = IO::AIO
977
978	PROTOTYPES: ENABLE
979
980	BOOT:
981	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
986
987	create_pipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}
990
991	void	1646	void
992	min_parallel (nthreads)	1647	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
993	int nthreads
994	PROTOTYPE: $
995
996	void
997	max_parallel (nthreads)
998	int nthreads
999	PROTOTYPE: $
1000
1001	int
1002	max_outstanding (nreqs)
1003	int nreqs
1004	PROTOTYPE: $
1005	CODE:	1648	PPCODE:
1006	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;
1008
1009	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$
1016	PPCODE:
1017	{	1649	{
		1650	int fd = s_fileno_croak (fh, 0);
1018	dREQ;	1651	dREQ;
1019		1652
1020	req->type = REQ_OPEN;	1653	req->type = EIO_SEEK;
1021	req->data = newSVsv (pathname);	1654	req->sv1 = newSVsv (fh);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1655	req->int1 = fd;
1023	req->fd = flags;	1656	req->offs = SvVAL64 (offset);
1024	req->mode = mode;	1657	req->int2 = whence;
1025		1658
1026	REQ_SEND;	1659	REQ_SEND;
1027	}	1660	}
1028		1661
1029	void	1662	void
1030	aio_close (fh,callback=&PL_sv_undef)	1663	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$
1034	ALIAS:	1664	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC
1038	PPCODE:
1039	{
1040	dREQ;
1041
1042	req->type = ix;
1043	req->fh = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045
1046	REQ_SEND (req);
1047	}
1048
1049	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:
1058	aio_read = REQ_READ	1665	aio_read = EIO_READ
1059	aio_write = REQ_WRITE	1666	aio_write = EIO_WRITE
1060	PROTOTYPE: $$$$$;$
1061	PPCODE:	1667	PPCODE:
1062	{	1668	{
1063	aio_req req;
1064	STRLEN svlen;	1669	STRLEN svlen;
		1670	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1065	char *svptr = SvPVbyte (data, svlen);	1671	char *svptr = SvPVbyte (data, svlen);
1066		1672	UV len = SvUV (length);
1067	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);
1069		1673
1070	if (dataoffset < 0)	1674	if (dataoffset < 0)
1071	dataoffset += svlen;	1675	dataoffset += svlen;
1072		1676
1073	if (dataoffset < 0 || dataoffset > svlen)	1677	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	1678	croak ("dataoffset outside of data scalar");
1075		1679
1076	if (ix == REQ_WRITE)	1680	if (ix == EIO_WRITE)
1077	{	1681	{
1078	/* write: check length and adjust. */	1682	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	1683	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	1684	len = svlen - dataoffset;
1081	}	1685	}
1082	else	1686	else
1083	{	1687	{
1084	/* read: grow scalar as necessary */	1688	/* read: check type and grow scalar as necessary */
		1689	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1085	svptr = SvGROW (data, length + dataoffset);	1690	svptr = sv_grow (data, len + dataoffset + 1);
		1691	else if (SvCUR (data) < len + dataoffset)
		1692	croak ("length + dataoffset outside of scalar, and cannot grow");
1086	}	1693	}
1087
1088	if (length < 0)
1089	croak ("length must not be negative");
1090		1694
1091	{	1695	{
1092	dREQ;	1696	dREQ;
1093		1697
1094	req->type = ix;	1698	req->type = ix;
1095	req->fh = newSVsv (fh);	1699	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1700	req->int1 = fd;
1097	: IoOFP (sv_2io (fh)));	1701	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	1702	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	1703	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1704	req->ptr2 = (char *)svptr + dataoffset;
		1705	req->stroffset = dataoffset;
1102		1706
1103	if (!SvREADONLY (data))	1707	if (!SvREADONLY (data))
1104	{	1708	{
1105	SvREADONLY_on (data);	1709	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1710	req->flags |= FLAG_SV2_RO_OFF;
1107	}	1711	}
1108		1712
1109	REQ_SEND;	1713	REQ_SEND;
1110	}	1714	}
1111	}	1715	}
1112		1716
1113	void	1717	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1718	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1115	SV * out_fh	1719	ALIAS:
1116	SV * in_fh	1720	aio_ioctl = EIO_IOCTL
1117	UV in_offset	1721	aio_fcntl = EIO_FCNTL
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$
1121	PPCODE:	1722	PPCODE:
1122	{	1723	{
1123	dREQ;	1724	int fd = s_fileno_croak (fh, 0);
		1725	char *svptr;
1124		1726
1125	req->type = REQ_SENDFILE;	1727	if (SvPOK (arg) || !SvNIOK (arg))
1126	req->fh = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;
1131	req->length = length;
1132
1133	REQ_SEND;
1134	}
1135
1136	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$
1143	PPCODE:
1144	{
1145	dREQ;
1146
1147	req->type = REQ_READAHEAD;
1148	req->fh = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;
1151	req->length = length;
1152
1153	REQ_SEND;
1154	}
1155
1156	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:
1161	aio_stat = REQ_STAT
1162	aio_lstat = REQ_LSTAT
1163	PPCODE:
1164	{
1165	dREQ;
1166
1167	New (0, req->statdata, 1, Stat_t);
1168	if (!req->statdata)
1169	{	1728	{
1170	req_free (req);	1729	STRLEN svlen;
1171	croak ("out of memory during aio_req->statdata allocation");	1730	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1172	}	1731	#ifdef IOCPARM_LEN
		1732	STRLEN need = IOCPARM_LEN (request);
		1733	#else
		1734	STRLEN need = 256;
		1735	#endif
1173		1736
1174	if (SvPOK (fh_or_path))	1737	if (svlen < need)
1175	{	1738	svptr = SvGROW (arg, need);
1176	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);
1179	}	1739	}
1180	else	1740	else
		1741	svptr = (char *)SvIV (arg);
		1742
1181	{	1743	{
		1744	dREQ;
		1745
1182	req->type = REQ_FSTAT;	1746	req->type = ix;
1183	req->fh = newSVsv (fh_or_path);	1747	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1748	req->int1 = fd;
		1749	req->int2 = (long)request;
		1750	req->sv2 = SvREFCNT_inc (arg);
		1751	req->ptr2 = svptr;
		1752
		1753	REQ_SEND;
1185	}	1754	}
		1755	}
		1756
		1757	void
		1758	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1759	ALIAS:
		1760	aio_readlink = EIO_READLINK
		1761	aio_realpath = EIO_REALPATH
		1762	PPCODE:
		1763	{
		1764	dREQ;
		1765
		1766	req->type = ix;
		1767	req_set_path1 (req, pathname);
1186		1768
1187	REQ_SEND;	1769	REQ_SEND;
1188	}	1770	}
1189		1771
1190	void	1772	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1773	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1192	SV * pathname	1774	PPCODE:
1193	SV * callback	1775	{
		1776	int ifd = s_fileno_croak (in_fh , 0);
		1777	int ofd = s_fileno_croak (out_fh, 1);
		1778	dREQ;
		1779
		1780	req->type = EIO_SENDFILE;
		1781	req->sv1 = newSVsv (out_fh);
		1782	req->int1 = ofd;
		1783	req->sv2 = newSVsv (in_fh);
		1784	req->int2 = ifd;
		1785	req->offs = in_offset;
		1786	req->size = length;
		1787
		1788	REQ_SEND;
		1789	}
		1790
		1791	void
		1792	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1793	PPCODE:
		1794	{
		1795	int fd = s_fileno_croak (fh, 0);
		1796	dREQ;
		1797
		1798	req->type = EIO_READAHEAD;
		1799	req->sv1 = newSVsv (fh);
		1800	req->int1 = fd;
		1801	req->offs = offset;
		1802	req->size = length;
		1803
		1804	REQ_SEND;
		1805	}
		1806
		1807	void
		1808	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1194	ALIAS:	1809	ALIAS:
		1810	aio_stat = EIO_STAT
		1811	aio_lstat = EIO_LSTAT
		1812	aio_statvfs = EIO_STATVFS
		1813	PPCODE:
		1814	{
		1815	dREQ;
		1816
		1817	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1818
		1819	REQ_SEND;
		1820	}
		1821
		1822	void
		1823	st_xtime ()
		1824	ALIAS:
		1825	st_atime = 0x01
		1826	st_mtime = 0x02
		1827	st_ctime = 0x04
		1828	st_btime = 0x08
		1829	st_xtime = 0x0f
		1830	PPCODE:
		1831	EXTEND (SP, 4);
		1832	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1833	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1834	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1835	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1836
		1837	void
		1838	st_xtimensec ()
		1839	ALIAS:
		1840	st_atimensec = 0x01
		1841	st_mtimensec = 0x02
		1842	st_ctimensec = 0x04
		1843	st_btimensec = 0x08
		1844	st_xtimensec = 0x0f
		1845	st_btimesec = 0x10
		1846	st_gen = 0x20
		1847	PPCODE:
		1848	EXTEND (SP, 4);
		1849	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1850	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1851	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1852	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1853	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1854	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1855
		1856	UV
		1857	major (UV dev)
		1858	ALIAS:
		1859	minor = 1
		1860	CODE:
		1861	RETVAL = ix ? minor (dev) : major (dev);
		1862	OUTPUT:
		1863	RETVAL
		1864
		1865	UV
		1866	makedev (UV maj, UV min)
		1867	CODE:
		1868	RETVAL = makedev (maj, min);
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	void
		1873	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1874	PPCODE:
		1875	{
		1876	dREQ;
		1877
		1878	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1879	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1880	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1881
		1882	REQ_SEND;
		1883	}
		1884
		1885	void
		1886	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1887	PPCODE:
		1888	{
		1889	dREQ;
		1890
		1891	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1892	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1893
		1894	REQ_SEND;
		1895	}
		1896
		1897	void
		1898	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1899	PPCODE:
		1900	{
		1901	dREQ;
		1902
		1903	req->int2 = mode;
		1904	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1905
		1906	REQ_SEND;
		1907	}
		1908
		1909	void
		1910	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1911	PPCODE:
		1912	{
		1913	dREQ;
		1914
		1915	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1916	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1917	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1918
		1919	REQ_SEND;
		1920	}
		1921
		1922	void
		1923	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1924	PPCODE:
		1925	{
		1926	dREQ;
		1927
		1928	req->type = EIO_READDIR;
		1929	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1930
		1931	if (flags & EIO_READDIR_DENTS)
		1932	req->int1 |= EIO_READDIR_CUSTOM2;
		1933
		1934	req_set_path1 (req, pathname);
		1935
		1936	REQ_SEND;
		1937	}
		1938
		1939	void
		1940	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1941	PPCODE:
		1942	{
		1943	dREQ;
		1944
		1945	req->type = EIO_MKDIR;
		1946	req->int2 = mode;
		1947	req_set_path1 (req, pathname);
		1948
		1949	REQ_SEND;
		1950	}
		1951
		1952	void
		1953	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1954	ALIAS:
1195	aio_unlink = REQ_UNLINK	1955	aio_unlink = EIO_UNLINK
1196	aio_rmdir = REQ_RMDIR	1956	aio_rmdir = EIO_RMDIR
1197	aio_readdir = REQ_READDIR	1957	aio_readdir = EIO_READDIR
1198	PPCODE:	1958	PPCODE:
1199	{	1959	{
1200	dREQ;	1960	dREQ;
1201		1961
1202	req->type = ix;	1962	req->type = ix;
1203	req->data = newSVsv (pathname);	1963	req_set_path1 (req, pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1964
1205
1206	REQ_SEND;	1965	REQ_SEND;
1207	}	1966	}
1208		1967
1209	void	1968	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1969	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:	1970	ALIAS:
1215	aio_link = REQ_LINK	1971	aio_link = EIO_LINK
1216	aio_symlink = REQ_SYMLINK	1972	aio_symlink = EIO_SYMLINK
1217	aio_rename = REQ_RENAME	1973	aio_rename = EIO_RENAME
1218	PPCODE:	1974	PPCODE:
1219	{	1975	{
		1976	eio_wd wd2 = 0;
1220	dREQ;	1977	dREQ;
1221		1978
1222	req->type = ix;	1979	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1980	req_set_path1 (req, oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1981	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1225	req->data = newSVsv (newpath);	1982	req->int3 = (long)wd2;
1226	req->dataptr = SvPVbyte_nolen (req->data);
1227		1983
1228	REQ_SEND;	1984	REQ_SEND;
1229	}	1985	}
1230		1986
1231	void	1987	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1988	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1989	PPCODE:
1236	{	1990	{
		1991	eio_wd wd2 = 0;
1237	dREQ;	1992	dREQ;
1238		1993
1239	req->type = REQ_SLEEP;	1994	req->type = EIO_RENAME;
1240	req->fd = delay < 0. ? 0 : delay;	1995	req_set_path1 (req, oldpath);
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1996	req_set_path (newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1242		1997	req->int2 = flags;
		1998	req->int3 = (long)wd2;
		1999
1243	REQ_SEND;	2000	REQ_SEND;
1244	}	2001	}
1245		2002
1246	void	2003	void
1247	aio_group (callback=&PL_sv_undef)	2004	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1248	SV * callback	2005	PPCODE:
1249	PROTOTYPE: ;$	2006	{
		2007	dREQ;
		2008
		2009	req->type = EIO_MKNOD;
		2010	req->int2 = (mode_t)mode;
		2011	req->offs = dev;
		2012	req_set_path1 (req, pathname);
		2013
		2014	REQ_SEND;
		2015	}
		2016
		2017	void
		2018	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		2019	ALIAS:
		2020	aio_mtouch = EIO_MTOUCH
		2021	aio_msync = EIO_MSYNC
1250	PPCODE:	2022	PPCODE:
1251	{	2023	{
		2024	STRLEN svlen;
		2025	char *svptr = SvPVbyte (data, svlen);
		2026	UV len = SvUV (length);
		2027
		2028	if (flags < 0)
		2029	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		2030
		2031	if (offset < 0)
		2032	offset += svlen;
		2033
		2034	if (offset < 0 || offset > svlen)
		2035	croak ("offset outside of scalar");
		2036
		2037	if (!SvOK (length) || len + offset > svlen)
		2038	len = svlen - offset;
		2039
		2040	{
		2041	dREQ;
		2042
		2043	req->type = ix;
		2044	req->sv2 = SvREFCNT_inc (data);
		2045	req->ptr2 = (char *)svptr + offset;
		2046	req->size = len;
		2047	req->int1 = flags;
		2048
		2049	REQ_SEND;
		2050	}
		2051	}
		2052
		2053	void
		2054	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		2055	PPCODE:
		2056	{
		2057	STRLEN svlen;
		2058	char *svptr = SvPVbyte (data, svlen);
		2059	UV len = SvUV (length);
		2060
		2061	if (offset < 0)
		2062	offset += svlen;
		2063
		2064	if (offset < 0 || offset > svlen)
		2065	croak ("offset outside of scalar");
		2066
		2067	if (!SvOK (length) || len + offset > svlen)
		2068	len = svlen - offset;
		2069
		2070	{
		2071	dREQ;
		2072
		2073	req->type = EIO_MLOCK;
		2074	req->sv2 = SvREFCNT_inc (data);
		2075	req->ptr2 = (char *)svptr + offset;
		2076	req->size = len;
		2077
		2078	REQ_SEND;
		2079	}
		2080	}
		2081
		2082	void
		2083	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		2084	PPCODE:
		2085	{
		2086	dREQ;
		2087
		2088	req->type = EIO_MLOCKALL;
		2089	req->int1 = flags;
		2090
		2091	REQ_SEND;
		2092	}
		2093
		2094	void
		2095	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		2096	PPCODE:
		2097	{
		2098	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	2099	dREQ;
1253		2100
1254	req->type = REQ_GROUP;	2101	req->type = EIO_CUSTOM;
1255	req_send (req);	2102	req->sv1 = newSVsv (fh);
		2103	req->int1 = fd;
1256		2104
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	2105	req->feed = fiemap;
1258	}	2106	#if HAVE_FIEMAP
		2107	/* keep our fingers crossed that the next two types are 64 bit */
		2108	req->offs = start;
		2109	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		2110	req->int2 = flags;
		2111	req->int3 = SvOK (count) ? SvIV (count) : -1;
		2112	#endif
1259		2113
		2114	REQ_SEND;
		2115	}
		2116
1260	void	2117	void
1261	aio_nop (callback=&PL_sv_undef)	2118	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
1262	SV * callback	2119	PPCODE:
		2120	{
		2121	char *svptr = 0;
		2122
		2123	sv_clear_foreign (data);
		2124
		2125	if (length) /* known length, directly read into scalar */
		2126	{
		2127	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		2128	svptr = sv_grow (data, length + 1);
		2129	else if (SvCUR (data) < length)
		2130	croak ("length outside of scalar, and cannot grow");
		2131	else
		2132	svptr = SvPVbyte_nolen (data);
		2133	}
		2134
		2135	{
		2136	dREQ;
		2137
		2138	req->type = EIO_SLURP;
		2139	req_set_path1 (req, pathname);
		2140	req->offs = offset;
		2141	req->size = length;
		2142	req->sv2 = SvREFCNT_inc (data);
		2143	req->ptr2 = svptr;
		2144
		2145	if (!SvREADONLY (data))
		2146	{
		2147	SvREADONLY_on (data);
		2148	req->flags |= FLAG_SV2_RO_OFF;
		2149	}
		2150
		2151	REQ_SEND;
		2152	}
		2153	}
		2154
		2155	void
		2156	aio_busy (double delay, SV *callback = &PL_sv_undef)
1263	PPCODE:	2157	PPCODE:
1264	{	2158	{
1265	dREQ;	2159	dREQ;
1266		2160
1267	req->type = REQ_NOP;	2161	req->type = EIO_BUSY;
		2162	req->nv1 = delay < 0. ? 0. : delay;
1268		2163
1269	REQ_SEND;	2164	REQ_SEND;
1270	}	2165	}
1271		2166
1272	#if 0
1273
1274	void	2167	void
1275	aio_pri (int pri = DEFAULT_PRI)	2168	aio_group (SV *callback = &PL_sv_undef)
		2169	PPCODE:
		2170	{
		2171	dREQ;
		2172
		2173	req->type = EIO_GROUP;
		2174
		2175	PUTBACK;
		2176	req_submit (req);
		2177	SPAGAIN;
		2178
		2179	XPUSHs (req_sv (req, aio_grp_stash));
		2180	}
		2181
		2182	void
		2183	aio_nop (SV *callback = &PL_sv_undef)
		2184	ALIAS:
		2185	aio_nop = EIO_NOP
		2186	aio_sync = EIO_SYNC
		2187	PPCODE:
		2188	{
		2189	dREQ;
		2190
		2191	req->type = ix;
		2192
		2193	REQ_SEND;
		2194	}
		2195
		2196	int
		2197	aioreq_pri (int pri = NO_INIT)
1276	CODE:	2198	CODE:
		2199	RETVAL = next_pri;
		2200	if (items > 0)
		2201	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	2202	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	2203	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	2204	next_pri = pri;
		2205	}
		2206	OUTPUT:
		2207	RETVAL
1280		2208
1281	#endif	2209	void
		2210	aioreq_nice (int nice = 0)
		2211	CODE:
		2212	nice = next_pri - nice;
		2213	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		2214	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		2215	next_pri = nice;
1282		2216
1283	void	2217	void
1284	flush ()	2218	flush ()
1285	PROTOTYPE:
1286	CODE:	2219	CODE:
1287	while (nreqs)	2220	while (eio_nreqs ())
1288	{	2221	{
1289	poll_wait ();	2222	poll_wait ();
1290	poll_cb ();	2223	poll_cb ();
1291	}	2224	}
1292		2225
1293	void	2226	int
1294	poll()	2227	poll ()
1295	PROTOTYPE:
1296	CODE:	2228	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	2229	poll_wait ();
1300	poll_cb ();	2230	RETVAL = poll_cb ();
1301	}
1302
1303	int
1304	poll_fileno()
1305	PROTOTYPE:
1306	CODE:
1307	RETVAL = respipe [0];
1308	OUTPUT:	2231	OUTPUT:
1309	RETVAL	2232	RETVAL
1310		2233
1311	int	2234	int
		2235	poll_fileno ()
		2236	CODE:
		2237	RETVAL = s_epipe_fd (&respipe);
		2238	OUTPUT:
		2239	RETVAL
		2240
		2241	int
1312	poll_cb(...)	2242	poll_cb (...)
1313	PROTOTYPE:	2243	PROTOTYPE:
1314	CODE:	2244	CODE:
1315	RETVAL = poll_cb ();	2245	RETVAL = poll_cb ();
1316	OUTPUT:	2246	OUTPUT:
1317	RETVAL	2247	RETVAL
1318		2248
1319	void	2249	void
1320	poll_wait()	2250	poll_wait ()
		2251	CODE:
		2252	poll_wait ();
		2253
		2254	int
		2255	nreqs ()
		2256	CODE:
		2257	RETVAL = eio_nreqs ();
		2258	OUTPUT:
		2259	RETVAL
		2260
		2261	int
		2262	nready ()
		2263	CODE:
		2264	RETVAL = eio_nready ();
		2265	OUTPUT:
		2266	RETVAL
		2267
		2268	int
		2269	npending ()
		2270	CODE:
		2271	RETVAL = eio_npending ();
		2272	OUTPUT:
		2273	RETVAL
		2274
		2275	int
		2276	nthreads ()
		2277	CODE:
		2278	RETVAL = eio_nthreads ();
		2279	OUTPUT:
		2280	RETVAL
		2281
		2282	int
		2283	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2284	CODE:
		2285	RETVAL = posix_fadvise (fh, offset, length, advice);
		2286	OUTPUT:
		2287	RETVAL
		2288
		2289	IV
		2290	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2291	CODE:
		2292	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2293	OUTPUT:
		2294	RETVAL
		2295
		2296	void
		2297	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2298	PPCODE:
		2299	sv_clear_foreign (scalar);
		2300	{
		2301	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2302	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2303	if (addr == (void *)-1)
		2304	XSRETURN_NO;
		2305
		2306	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2307
		2308	if (!(prot & PROT_WRITE))
		2309	SvREADONLY_on (scalar);
		2310
		2311	XSRETURN_YES;
		2312	}
		2313
		2314	void
		2315	munmap (SV *scalar)
		2316	CODE:
		2317	sv_clear_foreign (scalar);
		2318
		2319	SV *
		2320	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2321	CODE:
		2322	{
		2323	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2324	void *new;
		2325
		2326	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2327	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2328
		2329	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2330
		2331	RETVAL = &PL_sv_no;
		2332
		2333	if (new != (void *)-1)
		2334	{
		2335	RETVAL = new == (void *)mg->mg_ptr
		2336	? newSVpvn ("0 but true", 10)
		2337	: &PL_sv_yes;
		2338
		2339	mg->mg_ptr = (char *)new;
		2340	mg->mg_obj = (SV *)new_length;
		2341
		2342	SvPVX (scalar) = mg->mg_ptr;
		2343	SvCUR_set (scalar, new_length);
		2344	}
		2345	}
		2346	OUTPUT:
		2347	RETVAL
		2348
		2349	int
		2350	madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2351	ALIAS:
		2352	mprotect = 1
		2353	CODE:
		2354	{
		2355	STRLEN svlen;
		2356	void *addr = SvPVbyte (scalar, svlen);
		2357	STRLEN len = SvUV (length);
		2358
		2359	if (offset < 0)
		2360	offset += svlen;
		2361
		2362	if (offset < 0 || offset > svlen)
		2363	croak ("offset outside of scalar");
		2364
		2365	if (!SvOK (length) || len + offset > svlen)
		2366	len = svlen - offset;
		2367
		2368	addr = (void *)(((intptr_t)addr) + offset);
		2369	eio_page_align (&addr, &len);
		2370
		2371	switch (ix)
		2372	{
		2373	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2374	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2375	}
		2376	}
		2377	OUTPUT:
		2378	RETVAL
		2379
		2380	int
		2381	munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
		2382	CODE:
		2383	{
		2384	STRLEN svlen;
		2385	void *addr = SvPVbyte (scalar, svlen);
		2386	size_t len = SvUV (length);
		2387
		2388	if (offset < 0)
		2389	offset += svlen;
		2390
		2391	if (offset < 0 || offset > svlen)
		2392	croak ("offset outside of scalar");
		2393
		2394	if (!SvOK (length) || len + offset > svlen)
		2395	len = svlen - offset;
		2396
		2397	addr = (void *)(((intptr_t)addr) + offset);
		2398	eio_page_align (&addr, &len);
		2399	#if _POSIX_MEMLOCK_RANGE
		2400	RETVAL = munlock (addr, len);
		2401	#else
		2402	RETVAL = EIO_ENOSYS ();
		2403	#endif
		2404	}
		2405	OUTPUT:
		2406	RETVAL
		2407
		2408	int
		2409	mlockall (int flags)
		2410	PROTOTYPE: $;
		2411	CODE:
		2412	RETVAL = eio_mlockall_sync (flags);
		2413	OUTPUT:
		2414	RETVAL
		2415
		2416	int
		2417	munlockall ()
		2418	CODE:
		2419	#if _POSIX_MEMLOCK
		2420	munlockall ();
		2421	#else
		2422	RETVAL = EIO_ENOSYS ();
		2423	#endif
		2424	OUTPUT:
		2425	RETVAL
		2426
		2427	int
		2428	statx (SV8 *pathname, int flags, UV mask)
		2429	CODE:
		2430	{
		2431	/* undocumented, and might go away, and anyway, should use eio_statx */
		2432	SV *wdsv = 0;
		2433	SV *pathsv = 0;
		2434	eio_wd wd = EIO_CWD;
		2435	void *ptr;
		2436	int res;
		2437
		2438	req_set_path (pathname, &wdsv, &pathsv, &wd, &ptr);
		2439	RETVAL = eio__statx (!wd || wd->fd == EIO_CWD ? AT_FDCWD : wd->fd, ptr, flags, mask & STATX_ALL, &stx);
		2440
		2441	SvREFCNT_dec (pathsv);
		2442	SvREFCNT_dec (wdsv);
		2443	}
		2444	OUTPUT:
		2445	RETVAL
		2446
		2447	U32
		2448	stx_mode ()
1321	PROTOTYPE:	2449	PROTOTYPE:
1322	CODE:	2450	CODE:
		2451	#if HAVE_STATX
		2452	RETVAL = stx.stx_mode;
		2453	#else
		2454	XSRETURN_UNDEF;
		2455	#endif
		2456	OUTPUT:
		2457	RETVAL
		2458
		2459	#define STATX_OFFSET_mask statx_offsetof (stx_mask)
		2460	#define STATX_OFFSET_blksize statx_offsetof (stx_blksize)
		2461	#define STATX_OFFSET_nlink statx_offsetof (stx_nlink)
		2462	#define STATX_OFFSET_uid statx_offsetof (stx_uid)
		2463	#define STATX_OFFSET_gid statx_offsetof (stx_gid)
		2464	#define STATX_OFFSET_rdev_major statx_offsetof (stx_rdev_major)
		2465	#define STATX_OFFSET_rdev_minor statx_offsetof (stx_rdev_minor)
		2466	#define STATX_OFFSET_dev_major statx_offsetof (stx_dev_major)
		2467	#define STATX_OFFSET_dev_minor statx_offsetof (stx_dev_minor)
		2468	#define STATX_OFFSET_attributes statx_offsetof (stx_attributes)
		2469	#define STATX_OFFSET_ino statx_offsetof (stx_ino)
		2470	#define STATX_OFFSET_size statx_offsetof (stx_size)
		2471	#define STATX_OFFSET_blocks statx_offsetof (stx_blocks)
		2472	#define STATX_OFFSET_attributes_mask statx_offsetof (stx_attributes_mask)
		2473	#define STATX_OFFSET_atime statx_offsetof (stx_atime)
		2474	#define STATX_OFFSET_btime statx_offsetof (stx_btime)
		2475	#define STATX_OFFSET_ctime statx_offsetof (stx_ctime)
		2476	#define STATX_OFFSET_mtime statx_offsetof (stx_mtime)
		2477
		2478	U32
		2479	stx_mask ()
		2480	PROTOTYPE:
		2481	ALIAS:
		2482	stx_mask = STATX_OFFSET_mask
		2483	stx_blksize = STATX_OFFSET_blksize
		2484	stx_nlink = STATX_OFFSET_nlink
		2485	stx_uid = STATX_OFFSET_uid
		2486	stx_gid = STATX_OFFSET_gid
		2487	stx_rdev_major = STATX_OFFSET_rdev_major
		2488	stx_rdev_minor = STATX_OFFSET_rdev_minor
		2489	stx_dev_major = STATX_OFFSET_dev_major
		2490	stx_dev_minor = STATX_OFFSET_dev_minor
		2491	CODE:
		2492	#if HAVE_STATX
		2493	RETVAL = *(__u32 *)((char *)&stx + ix);
		2494	#else
		2495	XSRETURN_UNDEF;
		2496	#endif
		2497	OUTPUT:
		2498	RETVAL
		2499
		2500	VAL64
		2501	stx_attributes ()
		2502	PROTOTYPE:
		2503	ALIAS:
		2504	stx_attributes = STATX_OFFSET_attributes
		2505	stx_ino = STATX_OFFSET_ino
		2506	stx_size = STATX_OFFSET_size
		2507	stx_blocks = STATX_OFFSET_blocks
		2508	stx_attributes_mask = STATX_OFFSET_attributes_mask
		2509	CODE:
		2510	#if HAVE_STATX
		2511	RETVAL = *(__u64 *)((char *)&stx + ix);
		2512	#else
		2513	XSRETURN_UNDEF;
		2514	#endif
		2515	OUTPUT:
		2516	RETVAL
		2517
		2518	NV
		2519	stx_atime ()
		2520	PROTOTYPE:
		2521	ALIAS:
		2522	stx_atime = STATX_OFFSET_atime
		2523	stx_btime = STATX_OFFSET_btime
		2524	stx_ctime = STATX_OFFSET_ctime
		2525	stx_mtime = STATX_OFFSET_mtime
		2526	CODE:
		2527	#if HAVE_STATX
		2528	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2529	RETVAL = ts->tv_sec + ts->tv_nsec * 1e-9;
		2530	#else
		2531	XSRETURN_UNDEF;
		2532	#endif
		2533	OUTPUT:
		2534	RETVAL
		2535
		2536	VAL64
		2537	stx_atimesec ()
		2538	PROTOTYPE:
		2539	ALIAS:
		2540	stx_atimesec = STATX_OFFSET_atime
		2541	stx_btimesec = STATX_OFFSET_btime
		2542	stx_ctimesec = STATX_OFFSET_ctime
		2543	stx_mtimesec = STATX_OFFSET_mtime
		2544	CODE:
		2545	#if HAVE_STATX
		2546	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2547	RETVAL = ts->tv_sec;
		2548	#else
		2549	XSRETURN_UNDEF;
		2550	#endif
		2551	OUTPUT:
		2552	RETVAL
		2553
		2554	U32
		2555	stx_atimensec ()
		2556	PROTOTYPE:
		2557	ALIAS:
		2558	stx_atimensec = STATX_OFFSET_atime
		2559	stx_btimensec = STATX_OFFSET_btime
		2560	stx_ctimensec = STATX_OFFSET_ctime
		2561	stx_mtimensec = STATX_OFFSET_mtime
		2562	CODE:
		2563	#if HAVE_STATX
		2564	struct statx_timestamp *ts = (struct statx_timestamp *)((char *)&stx + ix);
		2565	RETVAL = ts->tv_nsec;
		2566	#else
		2567	RETVAL = 0;
		2568	#endif
		2569	OUTPUT:
		2570	RETVAL
		2571
		2572	void
		2573	accept4 (aio_rfd rfh, SV *sockaddr, int salen, int flags)
		2574	PPCODE:
		2575	{
		2576	SV *retval;
		2577	#if HAVE_ACCEPT4
		2578	socklen_t salen_ = salen ? salen + 1 : 0;
		2579
1323	if (nreqs)	2580	if (salen)
1324	poll_wait ();	2581	{
		2582	sv_upgrade (sockaddr, SVt_PV);
		2583	sv_grow (sockaddr, salen_);
		2584	}
		2585
		2586	int res = accept4 (rfh, salen ? (struct sockaddr *)SvPVX (sockaddr) : 0, salen ? &salen_ : 0, flags);
		2587
		2588	retval = newmortalFH (res, O_RDWR);
		2589
		2590	if (res >= 0 && salen > 0)
		2591	{
		2592	if (salen_ > salen + 1)
		2593	salen_ = salen + 1;
		2594
		2595	SvPOK_only (sockaddr);
		2596	SvCUR_set (sockaddr, salen_);
		2597	}
		2598	#else
		2599	errno = ENOSYS;
		2600	retval = &PL_sv_undef;
		2601	#endif
		2602	XPUSHs (retval);
		2603	}
		2604
		2605	ssize_t
		2606	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2607	CODE:
		2608	{
		2609	#if HAVE_LINUX_SPLICE
		2610	loff_t off_in_, off_out_;
		2611	RETVAL = splice (
		2612	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2613	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2614	length, flags
		2615	);
		2616	#else
		2617	RETVAL = EIO_ENOSYS ();
		2618	#endif
		2619	}
		2620	OUTPUT:
		2621	RETVAL
		2622
		2623	ssize_t
		2624	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2625	CODE:
		2626	#if HAVE_LINUX_SPLICE
		2627	RETVAL = tee (rfh, wfh, length, flags);
		2628	#else
		2629	RETVAL = EIO_ENOSYS ();
		2630	#endif
		2631	OUTPUT:
		2632	RETVAL
1325		2633
1326	int	2634	int
1327	nreqs()	2635	pipesize (aio_rfd rfh, int new_size = -1)
		2636	PROTOTYPE: $;$
		2637	CODE:
		2638	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2639	if (new_size >= 0)
		2640	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2641	else
		2642	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2643	#else
		2644	errno = ENOSYS;
		2645	RETVAL = -1;
		2646	#endif
		2647	OUTPUT:
		2648	RETVAL
		2649
		2650	void
		2651	pipe2 (int flags = 0)
1328	PROTOTYPE:	2652	PROTOTYPE: ;$
		2653	PPCODE:
		2654	{
		2655	int fd[2];
		2656	int res;
		2657
		2658	if (flags)
		2659	#if HAVE_PIPE2
		2660	res = pipe2 (fd, flags);
		2661	#else
		2662	res = (errno = ENOSYS, -1);
		2663	#endif
		2664	else
		2665	res = pipe (fd);
		2666
		2667	if (!res)
		2668	{
		2669	EXTEND (SP, 2);
		2670	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2671	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2672	}
		2673	}
		2674
		2675	void
		2676	pidfd_open (int pid, unsigned int flags = 0)
		2677	PPCODE:
		2678	{
		2679	/*GENDEF0_SYSCALL(pidfd_open,434)*/
		2680	int fd = syscall (SYS_pidfd_open, pid, flags);
		2681	XPUSHs (newmortalFH (fd, O_RDWR));
		2682	}
		2683
		2684	int
		2685	pidfd_send_signal (SV *pidfh, int sig, SV *siginfo = &PL_sv_undef, unsigned int flags = 0)
		2686	PPCODE:
		2687	{
		2688	int res;
		2689	#if HAVE_SIGINFO_T
		2690	siginfo_t si = { 0 };
		2691
		2692	if (SvOK (siginfo))
		2693	{
		2694	HV *hv;
		2695	SV **svp;
		2696
		2697	if (!SvROK (siginfo) || SvTYPE (SvRV (siginfo)) != SVt_PVHV)
		2698	croak ("siginfo argument must be a hashref with 'code', 'pid', 'uid' and 'value_int' or 'value_ptr' members, caught");
		2699
		2700	hv = (HV *)SvRV (siginfo);
		2701
		2702	if ((svp = hv_fetchs (hv, "code" , 0))) si.si_code = SvIV (*svp);
		2703	if ((svp = hv_fetchs (hv, "pid" , 0))) si.si_pid = SvIV (*svp);
		2704	if ((svp = hv_fetchs (hv, "uid" , 0))) si.si_uid = SvIV (*svp);
		2705	if ((svp = hv_fetchs (hv, "value_int", 0))) si.si_value.sival_int = SvIV (*svp);
		2706	if ((svp = hv_fetchs (hv, "value_ptr", 0))) si.si_value.sival_ptr = (void *)SvIV (*svp);
		2707	}
		2708
		2709	/*GENDEF0_SYSCALL(pidfd_send_signal,424)*/
		2710	res = syscall (SYS_pidfd_send_signal, s_fileno_croak (pidfh, 0), sig, SvOK (siginfo) ? &si : 0, flags);
		2711	#else
		2712	res = (errno = ENOSYS, -1);
		2713	#endif
		2714
		2715	XPUSHs (sv_2mortal (newSViv (res)));
		2716	}
		2717
		2718	void
		2719	pidfd_getfd (SV *pidfh, int targetfd, unsigned int flags = 0)
		2720	PPCODE:
		2721	{
		2722	/*GENDEF0_SYSCALL(pidfd_getfd,438)*/
		2723	int fd = syscall (SYS_pidfd_getfd, s_fileno_croak (pidfh, 0), targetfd, flags);
		2724	XPUSHs (newmortalFH (fd, O_RDWR));
		2725	}
		2726
		2727	void
		2728	eventfd (unsigned int initval = 0, int flags = 0)
		2729	PPCODE:
		2730	{
		2731	int fd;
		2732	#if HAVE_EVENTFD
		2733	fd = eventfd (initval, flags);
		2734	#else
		2735	fd = (errno = ENOSYS, -1);
		2736	#endif
		2737
		2738	XPUSHs (newmortalFH (fd, O_RDWR));
		2739	}
		2740
		2741	void
		2742	timerfd_create (int clockid, int flags = 0)
		2743	PPCODE:
		2744	{
		2745	int fd;
		2746	#if HAVE_TIMERFD
		2747	fd = timerfd_create (clockid, flags);
		2748	#else
		2749	fd = (errno = ENOSYS, -1);
		2750	#endif
		2751
		2752	XPUSHs (newmortalFH (fd, O_RDWR));
		2753	}
		2754
		2755	void
		2756	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2757	PPCODE:
		2758	{
		2759	int fd = s_fileno_croak (fh, 0);
		2760	#if HAVE_TIMERFD
		2761	int res;
		2762	struct itimerspec its, ots;
		2763
		2764	ts_set (&its.it_interval, interval);
		2765	ts_set (&its.it_value , value);
		2766	res = timerfd_settime (fd, flags, &its, &ots);
		2767
		2768	if (!res)
		2769	{
		2770	EXTEND (SP, 2);
		2771	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2772	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2773	}
		2774	#else
		2775	errno = ENOSYS;
		2776	#endif
		2777	}
		2778
		2779	void
		2780	timerfd_gettime (SV *fh)
		2781	PPCODE:
		2782	{
		2783	int fd = s_fileno_croak (fh, 0);
		2784	#if HAVE_TIMERFD
		2785	int res;
		2786	struct itimerspec ots;
		2787	res = timerfd_gettime (fd, &ots);
		2788
		2789	if (!res)
		2790	{
		2791	EXTEND (SP, 2);
		2792	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2793	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2794	}
		2795	#else
		2796	errno = ENOSYS;
		2797	#endif
		2798	}
		2799
		2800	void
		2801	memfd_create (SV8 *pathname, int flags = 0)
		2802	PPCODE:
		2803	{
		2804	int fd;
		2805	#if HAVE_MEMFD_CREATE
		2806	fd = memfd_create (SvPVbyte_nolen (pathname), flags);
		2807	#else
		2808	fd = (errno = ENOSYS, -1);
		2809	#endif
		2810
		2811	XPUSHs (newmortalFH (fd, O_RDWR));
		2812	}
		2813
		2814	UV
		2815	get_fdlimit ()
1329	CODE:	2816	CODE:
1330	RETVAL = nreqs;	2817	#if HAVE_RLIMITS
		2818	struct rlimit rl;
		2819	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2820	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2821	#endif
		2822	XSRETURN_UNDEF;
1331	OUTPUT:	2823	OUTPUT:
1332	RETVAL	2824	RETVAL
		2825
		2826	void
		2827	min_fdlimit (UV limit = 0x7fffffffU)
		2828	CODE:
		2829	{
		2830	#if HAVE_RLIMITS
		2831	struct rlimit rl;
		2832	rlim_t orig_rlim_max;
		2833	UV bit;
		2834
		2835	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2836	goto fail;
		2837
		2838	if (rl.rlim_cur == RLIM_INFINITY)
		2839	XSRETURN_YES;
		2840
		2841	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2842
		2843	if (rl.rlim_cur < limit)
		2844	{
		2845	rl.rlim_cur = limit;
		2846
		2847	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2848	rl.rlim_max = rl.rlim_cur;
		2849	}
		2850
		2851	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2852	XSRETURN_YES;
		2853
		2854	if (errno == EPERM)
		2855	{
		2856	/* setrlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2857	/* our limit overflows a system-wide limit */
		2858	/* try an adaptive algorithm, but do not lower the hardlimit */
		2859	rl.rlim_max = 0;
		2860	for (bit = 0x40000000U; bit; bit >>= 1)
		2861	{
		2862	rl.rlim_max |= bit;
		2863	rl.rlim_cur = rl.rlim_max;
		2864
		2865	/* never decrease the hard limit */
		2866	if (rl.rlim_max < orig_rlim_max)
		2867	break;
		2868
		2869	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2870	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2871	}
		2872
		2873	/* now, raise the soft limit to the max permitted */
		2874	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2875	{
		2876	rl.rlim_cur = rl.rlim_max;
		2877	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2878	errno = EPERM;
		2879	}
		2880	}
		2881	#endif
		2882	fail:
		2883	XSRETURN_UNDEF;
		2884	}
		2885
		2886	void _on_next_submit (SV *cb)
		2887	CODE:
		2888	SvREFCNT_dec (on_next_submit);
		2889	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1333		2890
1334	PROTOTYPES: DISABLE	2891	PROTOTYPES: DISABLE
1335		2892
		2893	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2894
		2895	BOOT:
		2896	{
		2897	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2898	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2899	}
		2900
		2901	void
		2902	DESTROY (SV *self)
		2903	CODE:
		2904	{
		2905	aio_wd wd = SvAIO_WD (self);
		2906	#if HAVE_AT
		2907	{
		2908	SV *callback = &PL_sv_undef;
		2909	dREQ; /* clobbers next_pri :/ */
		2910	next_pri = req->pri; /* restore next_pri */
		2911	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2912	req->type = EIO_WD_CLOSE;
		2913	req->wd = wd;
		2914	REQ_SEND;
		2915	}
		2916	#else
		2917	eio_wd_close_sync (wd);
		2918	#endif
		2919	}
		2920
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2921	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		2922
1338	void	2923	void
1339	cancel (aio_req_ornot req)	2924	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	2925	CODE:
1342	req_cancel (req);	2926	eio_cancel (req);
1343		2927
1344	void	2928	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2929	cb (aio_req_ornot req, SV *callback = NO_INIT)
1346	CODE:	2930	PPCODE:
		2931	{
		2932	if (GIMME_V != G_VOID)
		2933	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2934
		2935	if (items > 1)
		2936	{
		2937	SV *cb_cv = get_cb (callback);
		2938
1347	SvREFCNT_dec (req->callback);	2939	SvREFCNT_dec (req->callback);
1348	req->callback = newSVsv (callback);	2940	req->callback = SvREFCNT_inc (cb_cv);
		2941	}
		2942	}
1349		2943
1350	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2944	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1351		2945
1352	void	2946	void
1353	add (aio_req grp, ...)	2947	add (aio_req grp, ...)
1354	PPCODE:	2948	PPCODE:
1355	{	2949	{
1356	int i;	2950	int i;
1357	aio_req req;
1358		2951
1359	if (grp->fd == 2)	2952	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2953	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		2954
1362	for (i = 1; i < items; ++i )	2955	for (i = 1; i < items; ++i )
1363	{	2956	{
		2957	aio_req req;
		2958
1364	if (GIMME_V != G_VOID)	2959	if (GIMME_V != G_VOID)
1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2960	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1366		2961
1367	req = SvAIO_REQ (ST (i));	2962	req = SvAIO_REQ (ST (i));
1368		2963
1369	if (req)	2964	if (req)
1370	{	2965	eio_grp_add (grp, req);
1371	++grp->length;
1372	req->grp = grp;
1373
1374	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;
1376
1377	if (grp->grp_first)
1378	grp->grp_first->grp_prev = req;
1379
1380	grp->grp_first = req;
1381	}
1382	}	2966	}
1383	}	2967	}
		2968
		2969	void
		2970	cancel_subs (aio_req_ornot req)
		2971	CODE:
		2972	req_cancel_subs (req);
1384		2973
1385	void	2974	void
1386	result (aio_req grp, ...)	2975	result (aio_req grp, ...)
1387	CODE:	2976	CODE:
1388	{	2977	{
1389	int i;	2978	int i;
		2979	AV *av;
		2980
		2981	grp->errorno = errno;
		2982
1390	AV *av = newAV ();	2983	av = newAV ();
		2984	av_extend (av, items - 1);
1391		2985
1392	for (i = 1; i < items; ++i )	2986	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	2987	av_push (av, newSVsv (ST (i)));
1394		2988
1395	SvREFCNT_dec (grp->data);	2989	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	2990	grp->sv1 = (SV *)av;
1397	}	2991	}
1398		2992
1399	void	2993	void
		2994	errno (aio_req grp, int errorno = errno)
		2995	CODE:
		2996	grp->errorno = errorno;
		2997
		2998	void
1400	feed_limit (aio_req grp, int limit)	2999	limit (aio_req grp, int limit)
1401	CODE:	3000	CODE:
1402	grp->fd2 = limit;	3001	eio_grp_limit (grp, limit);
1403	aio_grp_feed (grp);
1404		3002
1405	void	3003	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	3004	feed (aio_req grp, SV *callback = &PL_sv_undef)
1407	CODE:	3005	CODE:
1408	{	3006	{
1409	SvREFCNT_dec (grp->fh2);	3007	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	3008	grp->sv2 = newSVsv (callback);
		3009	grp->feed = aio_grp_feed;
1411		3010
1412	if (grp->fd2 <= 0)	3011	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	3012	grp->int2 = 2;
1414		3013
1415	aio_grp_feed (grp);	3014	eio_grp_limit (grp, grp->int2);
1416	}	3015	}
1417		3016

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