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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.186 by root, Thu Jul 14 22:36:17 2011 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	21	# include <sys/mman.h>
27	# elif __freebsd	22	#endif
28	# include <sys/socket.h>	23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	#ifdef _WIN32
		28
		29	# define EIO_STRUCT_DIRENT Direntry_t
		30	# undef malloc
		31	# undef free
		32
		33	// perl overrides all those nice win32 functions
		34	# undef open
		35	# undef read
		36	# undef write
		37	# undef send
		38	# undef recv
		39	# undef stat
		40	# undef fstat
		41	# define lstat stat
		42	# undef truncate
		43	# undef ftruncate
		44	# undef open
		45	# undef close
		46	# undef unlink
		47	# undef rmdir
		48	# undef rename
		49	# undef lseek
		50
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54
		55	#else
		56
29	# include <sys/uio.h>	57	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	58	# include <sys/select.h>
		59	# include <unistd.h>
		60	# include <utime.h>
		61	# include <signal.h>
		62	# define EIO_STRUCT_DIRENT struct dirent
		63
		64	#endif
		65
		66	/* perl stupidly overrides readdir and maybe others */
		67	/* with thread-unsafe versions, imagine that :( */
		68	#undef readdir
		69	#undef opendir
		70	#undef closedir
		71
		72	#define EIO_STRUCT_STAT Stat_t
		73
		74	/* use NV for 32 bit perls as it allows larger offsets */
		75	#if IVSIZE >= 8
		76	# define VAL64 IV
		77	# define SvVAL64 SvIV
		78	# define newSVval64 newSViv
		79	#else
		80	# define VAL64 NV
		81	# define SvVAL64 SvNV
		82	# define newSVval64 newSVnv
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	typedef SV SV8; /* byte-sv, used for argument-checking */
		99	typedef int aio_rfd; /* read file desriptor */
		100	typedef int aio_wfd; /* write file descriptor */
		101
		102	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/config.h"
		113	#include "libeio/eio.h"
		114
		115	/* Linux/others */
		116	#ifndef O_ASYNC
		117	# define O_ASYNC 0
		118	#endif
		119	#ifndef O_DIRECT
		120	# define O_DIRECT 0
		121	#endif
		122	#ifndef O_NOATIME
		123	# define O_NOATIME 0
		124	#endif
		125
		126	/* POSIX */
		127	#ifndef O_CLOEXEC
		128	# define O_CLOEXEC 0
		129	#endif
		130	#ifndef O_NOFOLLOW
		131	# define O_NOFOLLOW 0
		132	#endif
		133	#ifndef O_NOCTTY
		134	# define O_NOCTTY 0
		135	#endif
		136	#ifndef O_NONBLOCK
		137	# define O_NONBLOCK 0
		138	#endif
		139	#ifndef O_EXEC
		140	# define O_EXEC 0
		141	#endif
		142	#ifndef O_SEARCH
		143	# define O_SEARCH 0
		144	#endif
		145	#ifndef O_DIRECTORY
		146	# define O_DIRECTORY 0
		147	#endif
		148	#ifndef O_DSYNC
		149	# define O_DSYNC 0
		150	#endif
		151	#ifndef O_RSYNC
		152	# define O_RSYNC 0
		153	#endif
		154	#ifndef O_SYNC
		155	# define O_SYNC 0
		156	#endif
		157	#ifndef O_TTY_INIT
		158	# define O_TTY_INIT 0
		159	#endif
		160
		161	#ifndef POSIX_FADV_NORMAL
		162	# define POSIX_FADV_NORMAL 0
		163	#endif
		164	#ifndef POSIX_FADV_SEQUENTIAL
		165	# define POSIX_FADV_SEQUENTIAL 0
		166	#endif
		167	#ifndef POSIX_FADV_RANDOM
		168	# define POSIX_FADV_RANDOM 0
		169	#endif
		170	#ifndef POSIX_FADV_NOREUSE
		171	# define POSIX_FADV_NOREUSE 0
		172	#endif
		173	#ifndef POSIX_FADV_WILLNEED
		174	# define POSIX_FADV_WILLNEED 0
		175	#endif
		176	#ifndef POSIX_FADV_DONTNEED
		177	# define POSIX_FADV_DONTNEED 0
		178	#endif
		179
		180	#if !HAVE_POSIX_FADVISE
		181	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		182	#endif
		183
		184	#ifndef POSIX_MADV_NORMAL
		185	# define POSIX_MADV_NORMAL 0
		186	#endif
		187	#ifndef POSIX_MADV_SEQUENTIAL
		188	# define POSIX_MADV_SEQUENTIAL 0
		189	#endif
		190	#ifndef POSIX_MADV_RANDOM
		191	# define POSIX_MADV_RANDOM 0
		192	#endif
		193	#ifndef POSIX_MADV_WILLNEED
		194	# define POSIX_MADV_WILLNEED 0
		195	#endif
		196	#ifndef POSIX_MADV_DONTNEED
		197	# define POSIX_MADV_DONTNEED 0
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef PROT_NONE
		205	# define PROT_NONE 0
		206	#endif
		207	#ifndef PROT_READ
		208	# define PROT_READ 0
		209	#endif
		210	#ifndef PROT_WRITE
		211	# define PROT_READ 0
		212	#endif
		213	#ifndef PROT_EXEC
		214	# define PROT_EXEC 0
		215	#endif
		216
		217	#ifndef ST_NODEV
		218	# define ST_NODEV 0
		219	#endif
		220	#ifndef ST_NOEXEC
		221	# define ST_NOEXEC 0
		222	#endif
		223	#ifndef ST_SYNCHRONOUS
		224	# define ST_SYNCHRONOUS 0
		225	#endif
		226	#ifndef ST_MANDLOCK
		227	# define ST_MANDLOCK 0
		228	#endif
		229	#ifndef ST_WRITE
		230	# define ST_WRITE 0
		231	#endif
		232	#ifndef ST_APPEND
		233	# define ST_APPEND 0
		234	#endif
		235	#ifndef ST_IMMUTABLE
		236	# define ST_IMMUTABLE 0
		237	#endif
		238	#ifndef ST_NOATIME
		239	# define ST_NOATIME 0
		240	#endif
		241	#ifndef ST_NODIRATIME
		242	# define ST_NODIRATIME 0
		243	#endif
		244	#ifndef ST_RELATIME
		245	# define ST_RELATIME 0
		246	#endif
		247
		248	#ifndef S_IFIFO
		249	# define S_IFIFO 0
		250	#endif
		251	#ifndef S_IFCHR
		252	# define S_IFCHR 0
		253	#endif
		254	#ifndef S_IFBLK
		255	# define S_IFBLK 0
		256	#endif
		257	#ifndef S_IFLNK
		258	# define S_IFLNK 0
		259	#endif
		260	#ifndef S_IFREG
		261	# define S_IFREG 0
		262	#endif
		263	#ifndef S_IFDIR
		264	# define S_IFDIR 0
		265	#endif
		266	#ifndef S_IFWHT
		267	# define S_IFWHT 0
		268	#endif
		269	#ifndef S_IFSOCK
		270	# define S_IFSOCK 0
		271	#endif
		272
		273	#ifndef MAP_ANONYMOUS
		274	# ifdef MAP_ANON
		275	# define MAP_ANONYMOUS MAP_ANON
34	# else	276	# else
35	# error sendfile support requested but not available	277	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	278	# endif
37	#endif	279	#endif
38		280	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	281	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	282	#endif
43		283	#ifndef MAP_LOCKED
44	#if __ia64	284	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	285	#endif
		286	#ifndef MAP_NORESERVE
		287	# define MAP_NORESERVE 0
		288	#endif
		289	#ifndef MAP_POPULATE
		290	# define MAP_POPULATE 0
		291	#endif
		292	#ifndef MAP_NONBLOCK
		293	# define MAP_NONBLOCK 0
		294	#endif
		295
		296	#ifndef makedev
		297	# define makedev(maj,min) (((maj) << 8) | (min))
		298	#endif
		299	#ifndef major
		300	# define major(dev) ((dev) >> 8)
		301	#endif
		302	#ifndef minor
		303	# define minor(dev) ((dev) & 0xff)
		304	#endif
		305
		306	#ifndef PAGESIZE
		307	# define PAGESIZE sysconf (_SC_PAGESIZE)
		308	#endif
		309
		310	static int req_invoke (eio_req *req);
		311	#define EIO_FINISH(req) req_invoke (req)
		312	static void req_destroy (eio_req *grp);
		313	#define EIO_DESTROY(req) req_destroy (req)
49		314
50	enum {	315	enum {
51	REQ_QUIT,	316	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};	317	};
63		318
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	319	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		320
67	typedef struct aio_cb
68	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	321	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	322	typedef eio_req *aio_req_ornot;
93	typedef aio_cb *aio_group;
94		323
95	static int started, wanted;	324	static SV *on_next_submit;
96	static volatile int nreqs;	325	static int next_pri = EIO_PRI_DEFAULT;
97	static int max_outstanding = 1<<30;	326	static int max_outstanding;
98	static int respipe [2];
99		327
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	328	static s_epipe respipe;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		329
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	330	static void req_destroy (aio_req req);
105	static volatile aio_req ress, rese; /* queue start, queue end */
106
107	static void req_free (aio_req req);	331	static void req_cancel (aio_req req);
		332
		333	static void want_poll (void)
		334	{
		335	/* write a dummy byte to the pipe so fh becomes ready */
		336	s_epipe_signal (&respipe);
		337	}
		338
		339	static void done_poll (void)
		340	{
		341	/* read any signals sent by the worker threads */
		342	s_epipe_drain (&respipe);
		343	}
108		344
109	/* must be called at most once */	345	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	346	static SV *req_sv (aio_req req, HV *stash)
111	{	347	{
		348	if (!req->self)
		349	{
112	req->self = (SV *)newHV ();	350	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	351	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		352	}
114		353
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	354	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
116	}	355	}
117		356
118	static aio_req SvAIO_REQ (SV *sv)	357	static aio_req SvAIO_REQ (SV *sv)
119	{	358	{
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	359	MAGIC *mg;
		360
		361	if (!SvROK (sv)
		362	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		363	&& SvSTASH (SvRV (sv)) != aio_req_stash
		364	&& !sv_derived_from (sv, "IO::AIO::REQ")))
121	croak ("object of class " AIO_REQ_KLASS " expected");	365	croak ("object of class IO::AIO::REQ expected");
122		366
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	367	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		368
125	return mg ? (aio_req)mg->mg_ptr : 0;	369	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	370	}
127		371
128	static void poll_wait ()	372	static void aio_grp_feed (aio_req grp)
129	{	373	{
130	if (nreqs && !ress)	374	if (grp->sv2 && SvOK (grp->sv2))
131	{	375	{
132	fd_set rfd;	376	dSP;
133	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);
135		377
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	378	ENTER;
		379	SAVETMPS;
		380	PUSHMARK (SP);
		381	XPUSHs (req_sv (grp, aio_grp_stash));
		382	PUTBACK;
		383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		384	SPAGAIN;
		385	FREETMPS;
		386	LEAVE;
137	}	387	}
138	}	388	}
139		389
140	static void req_invoke (aio_req req)	390	static void req_submit (eio_req *req)
141	{	391	{
142	dSP;	392	eio_submit (req);
143	int errorno = errno;
144		393
145	if (req->cancelled || !SvOK (req->callback))	394	if (expect_false (on_next_submit))
146	return;
147
148	errno = req->errorno;
149
150	ENTER;
151	PUSHMARK (SP);
152
153	switch (req->type)
154	{	395	{
155	case REQ_READDIR:	396	dSP;
		397	SV *cb = sv_2mortal (on_next_submit);
		398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
		404	}
		405	}
		406
		407	static int req_invoke (eio_req *req)
		408	{
		409	if (req->flags & FLAG_SV2_RO_OFF)
		410	SvREADONLY_off (req->sv2);
		411
		412	if (!EIO_CANCELLED (req) && req->callback)
		413	{
		414	dSP;
		415	static SV *sv_result_cache; /* caches the result integer SV */
		416	SV *sv_result;
		417
		418	ENTER;
		419	SAVETMPS;
		420	PUSHMARK (SP);
		421	EXTEND (SP, 1);
		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
156	{	425	{
157	SV *rv = &PL_sv_undef;	426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
158		435
159	if (req->result >= 0)	436	switch (req->type)
		437	{
		438	case EIO_READDIR:
160	{	439	{
161	char *buf = req->data2ptr;	440	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		441
164	while (req->result)	442	if (req->result >= 0)
165	{	443	{
		444	int i;
		445	char *names = (char *)req->ptr2;
		446	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	447	AV *av = newAV ();
167		448
168	av_push (av, sv);	449	av_extend (av, req->result - 1);
		450
		451	for (i = 0; i < req->result; ++i)
		452	{
		453	if (req->int1 & EIO_READDIR_DENTS)
		454	{
		455	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		456
		457	if (req->int1 & EIO_READDIR_CUSTOM2)
		458	{
		459	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		460	AV *avent = newAV ();
		461
		462	av_extend (avent, 2);
		463
		464	if (!sv_type [ent->type])
		465	{
		466	sv_type [ent->type] = newSViv (ent->type);
		467	SvREADONLY_on (sv_type [ent->type]);
		468	}
		469
		470	av_store (avent, 0, namesv);
		471	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		472	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		473
		474	av_store (av, i, newRV_noinc ((SV *)avent));
		475	}
		476	else
		477	av_store (av, i, namesv);
		478
		479	++ent;
		480	}
		481	else
		482	{
		483	SV *name = newSVpv (names, 0);
		484	av_store (av, i, name);
169	buf += SvCUR (sv) + 1;	485	names += SvCUR (name) + 1;
170	req->result--;	486	}
		487	}
		488
		489	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	490	}
172		491
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	492	PUSHs (rv);
		493
		494	if (req->int1 & EIO_READDIR_CUSTOM1)
		495	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
174	}	496	}
		497	break;
175		498
		499	case EIO_OPEN:
		500	{
		501	/* convert fd to fh */
		502	SV *fh = &PL_sv_undef;
		503
		504	if (req->result >= 0)
		505	{
		506	GV *gv = (GV *)sv_newmortal ();
		507	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		508	char sym [64];
		509	int symlen;
		510
		511	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		512	gv_init (gv, aio_stash, sym, symlen, 0);
		513
		514	symlen = snprintf (
		515	sym,
		516	sizeof (sym),
		517	"%s&=%d",
		518	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		519	(int)req->result
		520	);
		521
		522	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		523	fh = (SV *)gv;
		524	}
		525
		526	PUSHs (fh);
		527	}
		528	break;
		529
		530	case EIO_STATVFS:
		531	case EIO_FSTATVFS:
		532	{
		533	SV *rv = &PL_sv_undef;
		534
		535	if (req->result >= 0)
		536	{
		537	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		538	HV *hv = newHV ();
		539
		540	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		541
		542	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		543	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		544	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		545	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		546	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		547	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		548	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		549	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		550	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		551	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		552	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		553	}
		554
176	XPUSHs (rv);	555	PUSHs (rv);
		556	}
		557
		558	break;
		559
		560	case EIO_GROUP:
		561	req->int1 = 2; /* mark group as finished */
		562
		563	if (req->sv1)
		564	{
		565	int i;
		566	AV *av = (AV *)req->sv1;
		567
		568	EXTEND (SP, AvFILL (av) + 1);
		569	for (i = 0; i <= AvFILL (av); ++i)
		570	PUSHs (*av_fetch (av, i, 0));
		571	}
		572	break;
		573
		574	case EIO_NOP:
		575	case EIO_BUSY:
		576	break;
		577
		578	case EIO_READLINK:
		579	case EIO_REALPATH:
		580	if (req->result > 0)
		581	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		582	break;
		583
		584	case EIO_STAT:
		585	case EIO_LSTAT:
		586	case EIO_FSTAT:
		587	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		588	PL_laststatval = req->result;
		589	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		590	PUSHs (sv_result);
		591	break;
		592
		593	case EIO_READ:
		594	{
		595	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		596	*SvEND (req->sv2) = 0;
		597	SvPOK_only (req->sv2);
		598	SvSETMAGIC (req->sv2);
		599	PUSHs (sv_result);
		600	}
		601	break;
		602
		603	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		604	if (req->result > 0)
		605	SvIV_set (sv_result, 0);
		606	/* FALLTHROUGH */
		607
		608	default:
		609	PUSHs (sv_result);
		610	break;
177	}	611	}
178	break;
179		612
180	case REQ_OPEN:	613	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		614
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	615	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	616	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	617	SPAGAIN;
189		618
190	fh = SvREFCNT_inc (POPs);	619	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		620	SvREFCNT_dec (sv_result);
		621	else
		622	sv_result_cache = sv_result;
191		623
192	PUSHMARK (SP);	624	FREETMPS;
193	XPUSHs (sv_2mortal (fh));	625	LEAVE;
194	}
195	break;
196		626
197	case REQ_SLEEP:	627	PUTBACK;
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}	628	}
205		629
206		630	return !!SvTRUE (ERRSV);
207	PUTBACK;
208	call_sv (req->callback, G_VOID | G_EVAL);
209	SPAGAIN;
210
211	if (SvTRUE (ERRSV))
212	{
213	req_free (req);
214	croak (0);
215	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	631	}
221		632
222	static void req_free (aio_req req)	633	static void req_destroy (aio_req req)
223	{	634	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	635	if (req->self)
240	{	636	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	637	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	638	SvREFCNT_dec (req->self);
243	}	639	}
244		640
245	if (req->data)
246	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	641	SvREFCNT_dec (req->sv1);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	642	SvREFCNT_dec (req->sv2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	643	SvREFCNT_dec (req->callback);
259
260	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);
262		644
263	Safefree (req);	645	Safefree (req);
264	}	646	}
265		647
266	static void req_cancel (aio_req req)	648	static void req_cancel_subs (aio_req grp)
267	{	649	{
268	req->cancelled = 1;	650	aio_req sub;
269		651
270	if (req->type == REQ_GROUP)	652	if (grp->type != EIO_GROUP)
		653	return;
		654
		655	SvREFCNT_dec (grp->sv2);
		656	grp->sv2 = 0;
		657
		658	eio_grp_cancel (grp);
		659	}
		660
		661	static void create_respipe (void)
		662	{
		663	if (s_epipe_renew (&respipe))
		664	croak ("IO::AIO: unable to initialize result pipe");
		665	}
		666
		667	static void poll_wait (void)
		668	{
		669	while (eio_nreqs ())
271	{	670	{
272	aio_req sub;	671	int size;
273		672
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	673	X_LOCK (reslock);
275	req_cancel (sub);	674	size = res_queue.size;
		675	X_UNLOCK (reslock);
		676
		677	if (size)
		678	return;
		679
		680	etp_maybe_start_thread ();
		681
		682	s_epipe_wait (&respipe);
276	}	683	}
277	}	684	}
278		685
279	static int poll_cb ()	686	static int poll_cb (void)
280	{	687	{
281	dSP;
282	int count = 0;
283	int do_croak = 0;
284	aio_req req;
285
286	for (;;)	688	for (;;)
287	{	689	{
288	pthread_mutex_lock (&reslock);	690	int res = eio_poll ();
289	req = ress;
290		691
291	if (req)	692	if (res > 0)
292	{
293	ress = req->next;
294
295	if (!ress)
296	{
297	/* read any signals sent by the worker threads */
298	char buf [32];
299	while (read (respipe [0], buf, 32) == 32)
300	;
301
302	rese = 0;
303	}
304	}
305
306	pthread_mutex_unlock (&reslock);
307
308	if (!req)
309	break;	693	croak (0);
310		694
311	nreqs--;	695	if (!max_outstanding || max_outstanding > eio_nreqs ())
		696	return res;
312		697
313	if (req->type == REQ_QUIT)	698	poll_wait ();
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{
319	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321
322	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}	699	}
339
340	return count;
341	}	700	}
342		701
343	static void *aio_proc(void *arg);
344
345	static void start_thread (void)	702	static void atfork_child (void)
346	{	703	{
347	sigset_t fullsigset, oldsigset;	704	create_respipe ();
348	pthread_t tid;
349	pthread_attr_t attr;
350
351	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354
355	sigfillset (&fullsigset);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357
358	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
359	started++;
360
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);
362	}
363
364	static void req_send (aio_req req)
365	{
366	while (started < wanted && nreqs >= started)
367	start_thread ();
368
369	nreqs++;
370
371	pthread_mutex_lock (&reqlock);
372
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}
397
398	static void end_thread (void)
399	{
400	aio_req req;
401	Newz (0, req, 1, aio_cb);
402	req->type = REQ_QUIT;
403
404	req_send (req);
405	}
406
407	static void min_parallel (int nthreads)
408	{
409	if (wanted < nthreads)
410	wanted = nthreads;
411	}
412
413	static void max_parallel (int nthreads)
414	{
415	int cur = started;
416
417	if (wanted > nthreads)
418	wanted = nthreads;
419
420	while (cur > wanted)
421	{
422	end_thread ();
423	cur--;
424	}
425
426	while (started > wanted)
427	{
428	poll_wait ();
429	poll_cb ();
430	}
431	}
432
433	static void create_pipe ()
434	{
435	if (pipe (respipe))
436	croak ("unable to initialize result pipe");
437
438	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
439	croak ("cannot set result pipe to nonblocking mode");
440
441	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
442	croak ("cannot set result pipe to nonblocking mode");
443	}	705	}
444		706
445	/*****************************************************************************/	707	/*****************************************************************************/
446	/* work around various missing functions */
447		708
448	#if !HAVE_PREADWRITE	709	#if !_POSIX_MAPPED_FILES
449	# define pread aio_pread	710	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
450	# define pwrite aio_pwrite	711	# define munmap(addr,length) (errno = ENOSYS, -1)
451
452	/*
453	* make our pread/pwrite safe against themselves, but not against
454	* normal read/write by using a mutex. slows down execution a lot,
455	* but that's your problem, not mine.
456	*/
457	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
458
459	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
460	{
461	ssize_t res;
462	off_t ooffset;
463
464	pthread_mutex_lock (&preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);
470
471	return res;
472	}
473
474	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
475	{
476	ssize_t res;
477	off_t ooffset;
478
479	pthread_mutex_lock (&preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);
485
486	return res;
487	}
488	#endif
489
490	#if !HAVE_FDATASYNC
491	# define fdatasync fsync
492	#endif
493
494	#if !HAVE_READAHEAD
495	# define readahead aio_readahead
496
497	static ssize_t readahead (int fd, off_t offset, size_t count)
498	{
499	char readahead_buf[4096];
500
501	while (count > 0)
502	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
504
505	pread (fd, readahead_buf, len, offset);
506	offset += len;
507	count -= len;
508	}
509
510	errno = 0;
511	}
512	#endif
513
514	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r
516
517	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
518
519	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
520	{
521	struct dirent *e;
522	int errorno;
523
524	pthread_mutex_lock (&readdirlock);
525
526	e = readdir (dirp);
527	errorno = errno;
528
529	if (e)
530	{
531	*res = ent;
532	strcpy (ent->d_name, e->d_name);
533	}
534	else
535	*res = 0;
536
537	pthread_mutex_unlock (&readdirlock);
538
539	errno = errorno;
540	return e ? 0 : -1;
541	}
542	#endif
543
544	/* sendfile always needs emulation */
545	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
546	{
547	ssize_t res;
548
549	if (!count)
550	return 0;
551
552	#if HAVE_SENDFILE
553	# if __linux
554	res = sendfile (ofd, ifd, &offset, count);
555
556	# elif __freebsd
557	/*
558	* Of course, the freebsd sendfile is a dire hack with no thoughts
559	* wasted on making it similar to other I/O functions.
560	*/
561	{
562	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564
565	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
567	res = sbytes;
568	}
569
570	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);
572
573	# elif __solaris
574	{
575	struct sendfilevec vec;
576	size_t sbytes;
577
578	vec.sfv_fd = ifd;
579	vec.sfv_flag = 0;
580	vec.sfv_off = offset;
581	vec.sfv_len = count;
582
583	res = sendfilev (ofd, &vec, 1, &sbytes);
584
585	if (res < 0 && sbytes)
586	res = sbytes;
587	}
588
589	# endif	712	#endif
590	#else
591	res = -1;
592	errno = ENOSYS;
593	#endif
594		713
595	if (res < 0	714	#if !_POSIX_MEMORY_PROTECTION
596	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	715	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
597	#if __solaris	716	# define PROT_NONE 0
598	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
599	#endif	721	#endif
600	)
601	)
602	{
603	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];
605	res = 0;
606		722
607	while (count)	723	#define MMAP_MAGIC PERL_MAGIC_ext
608	{
609	ssize_t cnt;
610
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
612		724
613	if (cnt <= 0)	725	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
614	{
615	if (cnt && !res) res = -1;
616	break;
617	}
618
619	cnt = write (ofd, buf, cnt);
620
621	if (cnt <= 0)
622	{
623	if (cnt && !res) res = -1;
624	break;
625	}
626
627	offset += cnt;
628	res += cnt;
629	count -= cnt;
630	}
631	}
632
633	return res;
634	}
635
636	/* read a full directory */
637	static int scandir_ (const char *path, void **namesp)
638	{	726	{
639	DIR *dirp = opendir (path);	727	int old_errno = errno;
640	union	728	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
641	{
642	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;
645	struct dirent *entp;
646	char *name, *names;
647	int memlen = 4096;
648	int memofs = 0;
649	int res = 0;
650	int errorno;
651
652	if (!dirp)
653	return -1;
654
655	names = malloc (memlen);
656
657	for (;;)
658	{
659	errno = 0, readdir_r (dirp, &u.d, &entp);
660
661	if (!entp)
662	break;
663
664	name = entp->d_name;
665
666	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667	{
668	int len = strlen (name) + 1;
669
670	res++;
671
672	while (memofs + len > memlen)
673	{
674	memlen *= 2;
675	names = realloc (names, memlen);
676	if (!names)
677	break;
678	}
679
680	memcpy (names + memofs, name, len);
681	memofs += len;
682	}
683	}
684
685	errorno = errno;	729	errno = old_errno;
686	closedir (dirp);
687		730
688	if (errorno)	731	mg->mg_obj = 0; /* just in case */
689	{
690	free (names);
691	errno = errorno;
692	res = -1;
693	}
694		732
695	*namesp = (void *)names;	733	SvREADONLY_off (sv);
		734
		735	if (SvPVX (sv) != mg->mg_ptr)
		736	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		737
		738	SvCUR_set (sv, 0);
		739	SvPVX (sv) = 0;
		740	SvOK_off (sv);
		741
696	return res;	742	return 0;
697	}	743	}
		744
		745	static MGVTBL mmap_vtbl = {
		746	0, 0, 0, 0, mmap_free
		747	};
698		748
699	/*****************************************************************************/	749	/*****************************************************************************/
700		750
701	static void *aio_proc (void *thr_arg)	751	static SV * get_cb (SV *cb_sv)
702	{	752	{
703	aio_req req;	753	SvGETMAGIC (cb_sv);
704	int type;	754	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
705
706	do
707	{
708	pthread_mutex_lock (&reqlock);
709
710	for (;;)
711	{
712	req = reqs;
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719
720	if (req)
721	break;
722
723	pthread_cond_wait (&reqwait, &reqlock);
724	}
725
726	pthread_mutex_unlock (&reqlock);
727
728	errno = 0; /* strictly unnecessary */
729
730	if (!req->cancelled)
731	switch (req->type)
732	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
735
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
737	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
738
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
742
743	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
744	case REQ_CLOSE: req->result = close (req->fd); break;
745	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
746	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
747	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
750
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754
755	case REQ_SLEEP:
756	{
757	struct timeval tv;
758
759	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;
761
762	req->result = select (0, 0, 0, 0, &tv);
763	}
764
765	case REQ_QUIT:
766	break;
767
768	default:
769	req->result = ENOSYS;
770	break;
771	}
772
773	req->errorno = errno;
774
775	pthread_mutex_lock (&reslock);
776
777	req->next = 0;
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}
784	else
785	{
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);
790	}
791
792	pthread_mutex_unlock (&reslock);
793	}
794	while (type != REQ_QUIT);
795
796	return 0;
797	}
798
799	/*****************************************************************************/
800
801	static void atfork_prepare (void)
802	{
803	pthread_mutex_lock (&reqlock);
804	pthread_mutex_lock (&reslock);
805	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);
807	#endif
808	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);
810	#endif
811	}
812
813	static void atfork_parent (void)
814	{
815	#if !HAVE_READDIR_R
816	pthread_mutex_unlock (&readdirlock);
817	#endif
818	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);
820	#endif
821	pthread_mutex_unlock (&reslock);
822	pthread_mutex_unlock (&reqlock);
823	}
824
825	static void atfork_child (void)
826	{
827	aio_req prv;
828
829	started = 0;
830
831	while (reqs)
832	{
833	prv = reqs;
834	reqs = prv->next;
835	req_free (prv);
836	}
837
838	reqs = reqe = 0;
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848
849	close (respipe [0]);
850	close (respipe [1]);
851	create_pipe ();
852
853	atfork_parent ();
854	}	755	}
855		756
856	#define dREQ \	757	#define dREQ \
		758	SV *cb_cv; \
857	aio_req req; \	759	aio_req req; \
		760	int req_pri = next_pri; \
		761	next_pri = EIO_PRI_DEFAULT; \
858	\	762	\
859	if (SvOK (callback) && !SvROK (callback)) \	763	cb_cv = get_cb (callback); \
860	croak ("callback must be undef or of reference type"); \
861	\	764	\
862	Newz (0, req, 1, aio_cb); \	765	Newz (0, req, 1, eio_req); \
863	if (!req) \	766	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	767	croak ("out of memory during eio_req allocation"); \
865	\	768	\
866	req->callback = newSVsv (callback)	769	req->callback = SvREFCNT_inc (cb_cv); \
		770	req->pri = req_pri
867		771
868	#define REQ_SEND \	772	#define REQ_SEND \
		773	PUTBACK; \
869	req_send (req); \	774	req_submit (req); \
		775	SPAGAIN; \
870	\	776	\
871	if (GIMME_V != G_VOID) \	777	if (GIMME_V != G_VOID) \
872	XPUSHs (req_sv (req, AIO_REQ_KLASS));	778	XPUSHs (req_sv (req, aio_req_stash));
873		779
874	MODULE = IO::AIO PACKAGE = IO::AIO	780	MODULE = IO::AIO PACKAGE = IO::AIO
875		781
876	PROTOTYPES: ENABLE	782	PROTOTYPES: ENABLE
877		783
878	BOOT:	784	BOOT:
879	{	785	{
		786	static const struct {
		787	const char *name;
		788	IV iv;
		789	} *civ, const_iv[] = {
		790	# define const_niv(name, value) { # name, (IV) value },
		791	# define const_iv(name) { # name, (IV) name },
		792	# define const_eio(name) { # name, (IV) EIO_ ## name },
		793	const_iv (EXDEV)
		794	const_iv (ENOSYS)
		795	const_iv (O_RDONLY)
		796	const_iv (O_WRONLY)
		797	const_iv (O_RDWR)
		798	const_iv (O_CREAT)
		799	const_iv (O_TRUNC)
		800	const_iv (O_EXCL)
		801	const_iv (O_APPEND)
		802
		803	const_iv (O_ASYNC)
		804	const_iv (O_DIRECT)
		805	const_iv (O_NOATIME)
		806
		807	const_iv (O_CLOEXEC)
		808	const_iv (O_NOCTTY)
		809	const_iv (O_NOFOLLOW)
		810	const_iv (O_NONBLOCK)
		811	const_iv (O_EXEC)
		812	const_iv (O_SEARCH)
		813	const_iv (O_DIRECTORY)
		814	const_iv (O_DSYNC)
		815	const_iv (O_RSYNC)
		816	const_iv (O_SYNC)
		817	const_iv (O_TTY_INIT)
		818
		819	const_iv (S_IFIFO)
		820	const_iv (S_IFCHR)
		821	const_iv (S_IFBLK)
		822	const_iv (S_IFLNK)
		823	const_iv (S_IFREG)
		824	const_iv (S_IFDIR)
		825	const_iv (S_IFWHT)
		826	const_iv (S_IFSOCK)
		827	const_iv (S_IFMT)
		828
		829	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		830	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		831	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		832	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		833	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		834	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		835
		836	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		837	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		838	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		839	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		840	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		841
		842	const_iv (ST_RDONLY)
		843	const_iv (ST_NOSUID)
		844	const_iv (ST_NODEV)
		845	const_iv (ST_NOEXEC)
		846	const_iv (ST_SYNCHRONOUS)
		847	const_iv (ST_MANDLOCK)
		848	const_iv (ST_WRITE)
		849	const_iv (ST_APPEND)
		850	const_iv (ST_IMMUTABLE)
		851	const_iv (ST_NOATIME)
		852	const_iv (ST_NODIRATIME)
		853	const_iv (ST_RELATIME)
		854
		855	const_iv (PROT_NONE)
		856	const_iv (PROT_EXEC)
		857	const_iv (PROT_READ)
		858	const_iv (PROT_WRITE)
		859
		860	/*const_iv (MAP_FIXED)*/
		861	const_iv (MAP_PRIVATE)
		862	const_iv (MAP_SHARED)
		863	const_iv (MAP_ANONYMOUS)
		864
		865	/* linuxish */
		866	const_iv (MAP_HUGETLB)
		867	const_iv (MAP_LOCKED)
		868	const_iv (MAP_NORESERVE)
		869	const_iv (MAP_POPULATE)
		870	const_iv (MAP_NONBLOCK)
		871
		872	const_eio (MCL_FUTURE)
		873	const_eio (MCL_CURRENT)
		874
		875	const_eio (MS_ASYNC)
		876	const_eio (MS_INVALIDATE)
		877	const_eio (MS_SYNC)
		878
		879	const_eio (MT_MODIFY)
		880
		881	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		882	const_eio (SYNC_FILE_RANGE_WRITE)
		883	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		884
		885	const_eio (FALLOC_FL_KEEP_SIZE)
		886
		887	const_eio (READDIR_DENTS)
		888	const_eio (READDIR_DIRS_FIRST)
		889	const_eio (READDIR_STAT_ORDER)
		890	const_eio (READDIR_FOUND_UNKNOWN)
		891
		892	const_eio (DT_UNKNOWN)
		893	const_eio (DT_FIFO)
		894	const_eio (DT_CHR)
		895	const_eio (DT_DIR)
		896	const_eio (DT_BLK)
		897	const_eio (DT_REG)
		898	const_eio (DT_LNK)
		899	const_eio (DT_SOCK)
		900	const_eio (DT_WHT)
		901	};
		902
880	HV *stash = gv_stashpv ("IO::AIO", 1);	903	aio_stash = gv_stashpv ("IO::AIO" , 1);
881	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	904	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
882	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	905	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
883	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
884		906
		907	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		908	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		909
		910	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		911
885	create_pipe ();	912	create_respipe ();
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
887	}
888		913
		914	if (eio_init (want_poll, done_poll) < 0)
		915	croak ("IO::AIO: unable to initialise eio library");
		916
		917	/* atfork child called in fifo order, so before eio's handler */
		918	X_THREAD_ATFORK (0, 0, atfork_child);
		919	}
		920
889	void	921	void
890	min_parallel (nthreads)	922	max_poll_reqs (unsigned int nreqs)
891	int nthreads
892	PROTOTYPE: $	923	PROTOTYPE: $
		924	CODE:
		925	eio_set_max_poll_reqs (nreqs);
893		926
894	void	927	void
895	max_parallel (nthreads)	928	max_poll_time (double nseconds)
896	int nthreads
897	PROTOTYPE: $	929	PROTOTYPE: $
898
899	int
900	max_outstanding (nreqs)
901	int nreqs
902	PROTOTYPE: $
903	CODE:	930	CODE:
904	RETVAL = max_outstanding;	931	eio_set_max_poll_time (nseconds);
		932
		933	void
		934	min_parallel (unsigned int nthreads)
		935	PROTOTYPE: $
		936	CODE:
		937	eio_set_min_parallel (nthreads);
		938
		939	void
		940	max_parallel (unsigned int nthreads)
		941	PROTOTYPE: $
		942	CODE:
		943	eio_set_max_parallel (nthreads);
		944
		945	void
		946	max_idle (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_max_idle (nthreads);
		950
		951	void
		952	idle_timeout (unsigned int seconds)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_idle_timeout (seconds);
		956
		957	void
		958	max_outstanding (unsigned int maxreqs)
		959	PROTOTYPE: $
		960	CODE:
905	max_outstanding = nreqs;	961	max_outstanding = maxreqs;
906		962
907	void	963	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	964	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
909	SV * pathname
910	int flags
911	int mode
912	SV * callback
913	PROTOTYPE: $$$;$
914	PPCODE:	965	PPCODE:
915	{	966	{
916	dREQ;	967	dREQ;
917		968
918	req->type = REQ_OPEN;	969	req->type = EIO_OPEN;
919	req->data = newSVsv (pathname);	970	req->sv1 = newSVsv (pathname);
920	req->dataptr = SvPVbyte_nolen (req->data);	971	req->ptr1 = SvPVbyte_nolen (req->sv1);
921	req->fd = flags;	972	req->int1 = flags;
922	req->mode = mode;	973	req->int2 = mode;
923		974
924	REQ_SEND;	975	REQ_SEND;
925	}	976	}
926		977
927	void	978	void
928	aio_close (fh,callback=&PL_sv_undef)	979	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
929	SV * fh
930	SV * callback
931	PROTOTYPE: $;$
932	ALIAS:	980	ALIAS:
933	aio_close = REQ_CLOSE
934	aio_fsync = REQ_FSYNC	981	aio_fsync = EIO_FSYNC
935	aio_fdatasync = REQ_FDATASYNC	982	aio_fdatasync = EIO_FDATASYNC
936	PPCODE:	983	PPCODE:
937	{	984	{
		985	int fd = s_fileno_croak (fh, 0);
938	dREQ;	986	dREQ;
939		987
940	req->type = ix;	988	req->type = ix;
941	req->fh = newSVsv (fh);	989	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	990	req->int1 = fd;
943		991
944	REQ_SEND (req);	992	REQ_SEND (req);
945	}	993	}
946		994
947	void	995	void
		996	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		997	PPCODE:
		998	{
		999	int fd = s_fileno_croak (fh, 0);
		1000	dREQ;
		1001
		1002	req->type = EIO_SYNC_FILE_RANGE;
		1003	req->sv1 = newSVsv (fh);
		1004	req->int1 = fd;
		1005	req->offs = offset;
		1006	req->size = nbytes;
		1007	req->int2 = flags;
		1008
		1009	REQ_SEND (req);
		1010	}
		1011
		1012	void
		1013	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_FALLOCATE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->int2 = mode;
		1023	req->offs = offset;
		1024	req->size = len;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1034	int fd = s_fileno_croak (fh, 0);
		1035	dREQ;
		1036
		1037	if (close_pipe < 0)
		1038	{
		1039	int pipefd [2];
		1040
		1041	if (pipe (pipefd) < 0
		1042	|| close (pipefd [1]) < 0
		1043	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1044	abort (); /*D*/
		1045
		1046	close_pipe = pipefd [0];
		1047	}
		1048
		1049	req->type = EIO_DUP2;
		1050	req->int1 = close_pipe;
		1051	req->sv2 = newSVsv (fh);
		1052	req->int2 = fd;
		1053
		1054	REQ_SEND (req);
		1055	}
		1056
		1057	void
948	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1058	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
949	SV * fh
950	UV offset
951	UV length
952	SV * data
953	UV dataoffset
954	SV * callback
955	ALIAS:	1059	ALIAS:
956	aio_read = REQ_READ	1060	aio_read = EIO_READ
957	aio_write = REQ_WRITE	1061	aio_write = EIO_WRITE
958	PROTOTYPE: $$$$$;$
959	PPCODE:	1062	PPCODE:
960	{	1063	{
961	aio_req req;
962	STRLEN svlen;	1064	STRLEN svlen;
		1065	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
963	char *svptr = SvPVbyte (data, svlen);	1066	char *svptr = SvPVbyte (data, svlen);
964		1067	UV len = SvUV (length);
965	SvUPGRADE (data, SVt_PV);
966	SvPOK_on (data);
967		1068
968	if (dataoffset < 0)	1069	if (dataoffset < 0)
969	dataoffset += svlen;	1070	dataoffset += svlen;
970		1071
971	if (dataoffset < 0 || dataoffset > svlen)	1072	if (dataoffset < 0 || dataoffset > svlen)
972	croak ("data offset outside of string");	1073	croak ("dataoffset outside of data scalar");
973		1074
974	if (ix == REQ_WRITE)	1075	if (ix == EIO_WRITE)
975	{	1076	{
976	/* write: check length and adjust. */	1077	/* write: check length and adjust. */
977	if (length < 0 || length + dataoffset > svlen)	1078	if (!SvOK (length) || len + dataoffset > svlen)
978	length = svlen - dataoffset;	1079	len = svlen - dataoffset;
979	}	1080	}
980	else	1081	else
981	{	1082	{
982	/* read: grow scalar as necessary */	1083	/* read: check type and grow scalar as necessary */
		1084	SvUPGRADE (data, SVt_PV);
983	svptr = SvGROW (data, length + dataoffset);	1085	svptr = SvGROW (data, len + dataoffset + 1);
984	}	1086	}
985
986	if (length < 0)
987	croak ("length must not be negative");
988		1087
989	{	1088	{
990	dREQ;	1089	dREQ;
991		1090
992	req->type = ix;	1091	req->type = ix;
993	req->fh = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1093	req->int1 = fd;
995	: IoOFP (sv_2io (fh)));	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
996	req->offset = offset;	1095	req->size = len;
997	req->length = length;
998	req->data = SvREFCNT_inc (data);	1096	req->sv2 = SvREFCNT_inc (data);
999	req->dataptr = (char *)svptr + dataoffset;	1097	req->ptr2 = (char *)svptr + dataoffset;
		1098	req->stroffset = dataoffset;
1000		1099
1001	if (!SvREADONLY (data))	1100	if (!SvREADONLY (data))
1002	{	1101	{
1003	SvREADONLY_on (data);	1102	SvREADONLY_on (data);
1004	req->data2ptr = (void *)data;	1103	req->flags |= FLAG_SV2_RO_OFF;
1005	}	1104	}
1006		1105
1007	REQ_SEND;	1106	REQ_SEND;
1008	}	1107	}
1009	}	1108	}
1010		1109
1011	void	1110	void
1012	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1111	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1013	SV * out_fh	1112	ALIAS:
1014	SV * in_fh	1113	aio_readlink = EIO_READLINK
1015	UV in_offset	1114	aio_realpath = EIO_REALPATH
1016	UV length
1017	SV * callback
1018	PROTOTYPE: $$$$;$
1019	PPCODE:	1115	PPCODE:
1020	{	1116	{
		1117	SV *data;
		1118	dREQ;
		1119
		1120	req->type = ix;
		1121	req->sv1 = newSVsv (path);
		1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1123
		1124	REQ_SEND;
		1125	}
		1126
		1127	void
		1128	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1129	PPCODE:
		1130	{
		1131	int ifd = s_fileno_croak (in_fh , 0);
		1132	int ofd = s_fileno_croak (out_fh, 1);
1021	dREQ;	1133	dREQ;
1022		1134
1023	req->type = REQ_SENDFILE;	1135	req->type = EIO_SENDFILE;
1024	req->fh = newSVsv (out_fh);	1136	req->sv1 = newSVsv (out_fh);
1025	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1137	req->int1 = ofd;
1026	req->fh2 = newSVsv (in_fh);	1138	req->sv2 = newSVsv (in_fh);
1027	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1139	req->int2 = ifd;
1028	req->offset = in_offset;	1140	req->offs = in_offset;
1029	req->length = length;	1141	req->size = length;
1030		1142
1031	REQ_SEND;	1143	REQ_SEND;
1032	}	1144	}
1033		1145
1034	void	1146	void
1035	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1147	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1036	SV * fh
1037	UV offset
1038	IV length
1039	SV * callback
1040	PROTOTYPE: $$$;$
1041	PPCODE:	1148	PPCODE:
1042	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1043	dREQ;	1151	dREQ;
1044		1152
1045	req->type = REQ_READAHEAD;	1153	req->type = EIO_READAHEAD;
1046	req->fh = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1047	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1048	req->offset = offset;	1156	req->offs = offset;
1049	req->length = length;	1157	req->size = length;
1050		1158
1051	REQ_SEND;	1159	REQ_SEND;
1052	}	1160	}
1053		1161
1054	void	1162	void
1055	aio_stat (fh_or_path,callback=&PL_sv_undef)	1163	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1056	SV * fh_or_path
1057	SV * callback
1058	ALIAS:	1164	ALIAS:
1059	aio_stat = REQ_STAT	1165	aio_stat = EIO_STAT
1060	aio_lstat = REQ_LSTAT	1166	aio_lstat = EIO_LSTAT
		1167	aio_statvfs = EIO_STATVFS
1061	PPCODE:	1168	PPCODE:
1062	{	1169	{
1063	dREQ;	1170	dREQ;
1064		1171
1065	New (0, req->statdata, 1, Stat_t);	1172	req->sv1 = newSVsv (fh_or_path);
1066	if (!req->statdata)
1067	{
1068	req_free (req);
1069	croak ("out of memory during aio_req->statdata allocation");
1070	}
1071		1173
1072	if (SvPOK (fh_or_path))	1174	if (SvPOK (req->sv1))
1073	{	1175	{
1074	req->type = ix;	1176	req->type = ix;
1075	req->data = newSVsv (fh_or_path);
1076	req->dataptr = SvPVbyte_nolen (req->data);	1177	req->ptr1 = SvPVbyte_nolen (req->sv1);
1077	}	1178	}
1078	else	1179	else
1079	{	1180	{
1080	req->type = REQ_FSTAT;	1181	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1081	req->fh = newSVsv (fh_or_path);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1182	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1083	}	1183	}
1084		1184
1085	REQ_SEND;	1185	REQ_SEND;
1086	}	1186	}
1087		1187
		1188	UV
		1189	major (UV dev)
		1190	ALIAS:
		1191	minor = 1
		1192	CODE:
		1193	RETVAL = ix ? major (dev) : minor (dev);
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	UV
		1198	makedev (UV maj, UV min)
		1199	CODE:
		1200	RETVAL = makedev (maj, min);
		1201	OUTPUT:
		1202	RETVAL
		1203
1088	void	1204	void
		1205	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
		1208	dREQ;
		1209
		1210	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1211	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1212	req->sv1 = newSVsv (fh_or_path);
		1213
		1214	if (SvPOK (req->sv1))
		1215	{
		1216	req->type = EIO_UTIME;
		1217	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1218	}
		1219	else
		1220	{
		1221	req->type = EIO_FUTIME;
		1222	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1223	}
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	dREQ;
		1233
		1234	req->sv1 = newSVsv (fh_or_path);
		1235	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1236
		1237	if (SvPOK (req->sv1))
		1238	{
		1239	req->type = EIO_TRUNCATE;
		1240	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1241	}
		1242	else
		1243	{
		1244	req->type = EIO_FTRUNCATE;
		1245	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1246	}
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_chmod = EIO_CHMOD
		1255	aio_mkdir = EIO_MKDIR
		1256	PPCODE:
		1257	{
		1258	dREQ;
		1259
		1260	req->int2 = mode;
		1261	req->sv1 = newSVsv (fh_or_path);
		1262
		1263	if (SvPOK (req->sv1))
		1264	{
		1265	req->type = ix;
		1266	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1267	}
		1268	else
		1269	{
		1270	req->type = EIO_FCHMOD;
		1271	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1272	}
		1273
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	dREQ;
		1282
		1283	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1284	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1285	req->sv1 = newSVsv (fh_or_path);
		1286
		1287	if (SvPOK (req->sv1))
		1288	{
		1289	req->type = EIO_CHOWN;
		1290	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1291	}
		1292	else
		1293	{
		1294	req->type = EIO_FCHOWN;
		1295	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1296	}
		1297
		1298	REQ_SEND;
		1299	}
		1300
		1301	void
		1302	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1303	PPCODE:
		1304	{
		1305	dREQ;
		1306
		1307	req->type = EIO_READDIR;
		1308	req->sv1 = newSVsv (pathname);
		1309	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1310	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1311
		1312	if (flags & EIO_READDIR_DENTS)
		1313	req->int1 |= EIO_READDIR_CUSTOM2;
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1089	aio_unlink (pathname,callback=&PL_sv_undef)	1319	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1090	SV * pathname
1091	SV * callback
1092	ALIAS:	1320	ALIAS:
1093	aio_unlink = REQ_UNLINK	1321	aio_unlink = EIO_UNLINK
1094	aio_rmdir = REQ_RMDIR	1322	aio_rmdir = EIO_RMDIR
1095	aio_readdir = REQ_READDIR	1323	aio_readdir = EIO_READDIR
1096	PPCODE:	1324	PPCODE:
1097	{	1325	{
1098	dREQ;	1326	dREQ;
1099		1327
1100	req->type = ix;	1328	req->type = ix;
1101	req->data = newSVsv (pathname);	1329	req->sv1 = newSVsv (pathname);
1102	req->dataptr = SvPVbyte_nolen (req->data);	1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
1103		1331
1104	REQ_SEND;	1332	REQ_SEND;
1105	}	1333	}
1106		1334
1107	void	1335	void
1108	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1336	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1109	SV * oldpath
1110	SV * newpath
1111	SV * callback
1112	ALIAS:	1337	ALIAS:
1113	aio_link = REQ_LINK	1338	aio_link = EIO_LINK
1114	aio_symlink = REQ_SYMLINK	1339	aio_symlink = EIO_SYMLINK
1115	aio_rename = REQ_RENAME	1340	aio_rename = EIO_RENAME
1116	PPCODE:	1341	PPCODE:
1117	{	1342	{
1118	dREQ;	1343	dREQ;
1119		1344
1120	req->type = ix;	1345	req->type = ix;
1121	req->fh = newSVsv (oldpath);	1346	req->sv1 = newSVsv (oldpath);
1122	req->data2ptr = SvPVbyte_nolen (req->fh);	1347	req->ptr1 = SvPVbyte_nolen (req->sv1);
1123	req->data = newSVsv (newpath);	1348	req->sv2 = newSVsv (newpath);
1124	req->dataptr = SvPVbyte_nolen (req->data);	1349	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125		1350
1126	REQ_SEND;	1351	REQ_SEND;
1127	}	1352	}
1128		1353
1129	void	1354	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1355	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1131	double delay
1132	SV * callback
1133	PPCODE:	1356	PPCODE:
1134	{	1357	{
1135	dREQ;	1358	dREQ;
1136		1359
1137	req->type = REQ_SLEEP;	1360	req->type = EIO_MKNOD;
1138	req->fd = delay < 0. ? 0 : delay;	1361	req->sv1 = newSVsv (pathname);
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1362	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140		1363	req->int2 = (mode_t)mode;
		1364	req->offs = dev;
		1365
1141	REQ_SEND;	1366	REQ_SEND;
1142	}	1367	}
1143		1368
1144	void	1369	void
1145	aio_group (callback=&PL_sv_undef)	1370	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1146	SV * callback	1371	ALIAS:
1147	PROTOTYPE: ;&	1372	aio_mtouch = EIO_MTOUCH
		1373	aio_msync = EIO_MSYNC
1148	PPCODE:	1374	PPCODE:
1149	{	1375	{
		1376	STRLEN svlen;
		1377	char *svptr = SvPVbyte (data, svlen);
		1378	UV len = SvUV (length);
		1379
		1380	if (offset < 0)
		1381	offset += svlen;
		1382
		1383	if (offset < 0 || offset > svlen)
		1384	croak ("offset outside of scalar");
		1385
		1386	if (!SvOK (length) || len + offset > svlen)
		1387	len = svlen - offset;
		1388
		1389	{
		1390	dREQ;
		1391
		1392	req->type = ix;
		1393	req->sv2 = SvREFCNT_inc (data);
		1394	req->ptr2 = (char *)svptr + offset;
		1395	req->size = len;
		1396	req->int1 = flags;
		1397
		1398	REQ_SEND;
		1399	}
		1400	}
		1401
		1402	void
		1403	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	STRLEN svlen;
		1407	char *svptr = SvPVbyte (data, svlen);
		1408	UV len = SvUV (length);
		1409
		1410	if (offset < 0)
		1411	offset += svlen;
		1412
		1413	if (offset < 0 || offset > svlen)
		1414	croak ("offset outside of scalar");
		1415
		1416	if (!SvOK (length) || len + offset > svlen)
		1417	len = svlen - offset;
		1418
		1419	{
		1420	dREQ;
		1421
		1422	req->type = EIO_MLOCK;
		1423	req->sv2 = SvREFCNT_inc (data);
		1424	req->ptr2 = (char *)svptr + offset;
		1425	req->size = len;
		1426
		1427	REQ_SEND;
		1428	}
		1429	}
		1430
		1431	void
		1432	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_MLOCKALL;
		1438	req->int1 = flags;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
		1444	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1445	PPCODE:
		1446	{
1150	dREQ;	1447	dREQ;
		1448
		1449	req->type = EIO_BUSY;
		1450	req->nv1 = delay < 0. ? 0. : delay;
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
		1456	aio_group (SV *callback=&PL_sv_undef)
		1457	PPCODE:
		1458	{
		1459	dREQ;
		1460
1151	req->type = REQ_GROUP;	1461	req->type = EIO_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154		1462
1155	req_send (req);	1463	req_submit (req);
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1464	XPUSHs (req_sv (req, aio_grp_stash));
1157	}	1465	}
		1466
		1467	void
		1468	aio_nop (SV *callback=&PL_sv_undef)
		1469	ALIAS:
		1470	aio_nop = EIO_NOP
		1471	aio_sync = EIO_SYNC
		1472	PPCODE:
		1473	{
		1474	dREQ;
		1475
		1476	req->type = ix;
		1477
		1478	REQ_SEND;
		1479	}
		1480
		1481	int
		1482	aioreq_pri (int pri = 0)
		1483	CODE:
		1484	RETVAL = next_pri;
		1485	if (items > 0)
		1486	{
		1487	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1488	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1489	next_pri = pri;
		1490	}
		1491	OUTPUT:
		1492	RETVAL
		1493
		1494	void
		1495	aioreq_nice (int nice = 0)
		1496	CODE:
		1497	nice = next_pri - nice;
		1498	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1499	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1500	next_pri = nice;
1158		1501
1159	void	1502	void
1160	flush ()	1503	flush ()
1161	PROTOTYPE:
1162	CODE:	1504	CODE:
1163	while (nreqs)	1505	while (eio_nreqs ())
1164	{	1506	{
1165	poll_wait ();	1507	poll_wait ();
1166	poll_cb ();	1508	poll_cb ();
1167	}	1509	}
1168		1510
1169	void
1170	poll()
1171	PROTOTYPE:
1172	CODE:
1173	if (nreqs)
1174	{
1175	poll_wait ();
1176	poll_cb ();
1177	}
1178
1179	int	1511	int
1180	poll_fileno()	1512	poll ()
1181	PROTOTYPE:
1182	CODE:	1513	CODE:
1183	RETVAL = respipe [0];	1514	poll_wait ();
1184	OUTPUT:
1185	RETVAL
1186
1187	int
1188	poll_cb(...)
1189	PROTOTYPE:
1190	CODE:
1191	RETVAL = poll_cb ();	1515	RETVAL = poll_cb ();
1192	OUTPUT:	1516	OUTPUT:
1193	RETVAL	1517	RETVAL
1194		1518
1195	void
1196	poll_wait()
1197	PROTOTYPE:
1198	CODE:
1199	if (nreqs)
1200	poll_wait ();
1201
1202	int	1519	int
1203	nreqs()	1520	poll_fileno ()
1204	PROTOTYPE:
1205	CODE:	1521	CODE:
1206	RETVAL = nreqs;	1522	RETVAL = s_epipe_fd (&respipe);
1207	OUTPUT:	1523	OUTPUT:
1208	RETVAL	1524	RETVAL
1209		1525
		1526	int
		1527	poll_cb (...)
		1528	PROTOTYPE:
		1529	CODE:
		1530	RETVAL = poll_cb ();
		1531	OUTPUT:
		1532	RETVAL
		1533
		1534	void
		1535	poll_wait ()
		1536	CODE:
		1537	poll_wait ();
		1538
		1539	int
		1540	nreqs ()
		1541	CODE:
		1542	RETVAL = eio_nreqs ();
		1543	OUTPUT:
		1544	RETVAL
		1545
		1546	int
		1547	nready ()
		1548	CODE:
		1549	RETVAL = eio_nready ();
		1550	OUTPUT:
		1551	RETVAL
		1552
		1553	int
		1554	npending ()
		1555	CODE:
		1556	RETVAL = eio_npending ();
		1557	OUTPUT:
		1558	RETVAL
		1559
		1560	int
		1561	nthreads ()
		1562	CODE:
		1563	RETVAL = eio_nthreads ();
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	int
		1568	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1569	CODE:
		1570	RETVAL = posix_fadvise (fh, offset, length, advice);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	ssize_t
		1575	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1576	CODE:
		1577	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1583	PPCODE:
		1584	sv_unmagic (scalar, MMAP_MAGIC);
		1585	{
		1586	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1587	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1588	if (addr == (void *)-1)
		1589	XSRETURN_NO;
		1590
		1591	sv_force_normal (scalar);
		1592
		1593	/* we store the length in mg_obj, as namlen is I32 :/ */
		1594	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1595	->mg_obj = (SV *)length;
		1596
		1597	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1598
		1599	if (!(prot & PROT_WRITE))
		1600	SvREADONLY_on (scalar);
		1601
		1602	if (SvLEN (scalar))
		1603	Safefree (SvPVX (scalar));
		1604
		1605	SvPVX (scalar) = (char *)addr;
		1606	SvCUR_set (scalar, length);
		1607	SvLEN_set (scalar, 0);
		1608	SvPOK_only (scalar);
		1609
		1610	XSRETURN_YES;
		1611	}
		1612
		1613	void
		1614	munmap (SV *scalar)
		1615	CODE:
		1616	sv_unmagic (scalar, MMAP_MAGIC);
		1617
		1618	int
		1619	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1620	ALIAS:
		1621	mprotect = 1
		1622	CODE:
		1623	{
		1624	STRLEN svlen;
		1625	void *addr = SvPVbyte (scalar, svlen);
		1626	size_t len = SvUV (length);
		1627
		1628	if (offset < 0)
		1629	offset += svlen;
		1630
		1631	if (offset < 0 || offset > svlen)
		1632	croak ("offset outside of scalar");
		1633
		1634	if (!SvOK (length) || len + offset > svlen)
		1635	len = svlen - offset;
		1636
		1637	addr = (void *)(((intptr_t)addr) + offset);
		1638	eio_page_align (&addr, &len);
		1639
		1640	switch (ix)
		1641	{
		1642	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1643	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1644	}
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1651	CODE:
		1652	{
		1653	STRLEN svlen;
		1654	void *addr = SvPVbyte (scalar, svlen);
		1655	size_t len = SvUV (length);
		1656
		1657	if (offset < 0)
		1658	offset += svlen;
		1659
		1660	if (offset < 0 || offset > svlen)
		1661	croak ("offset outside of scalar");
		1662
		1663	if (!SvOK (length) || len + offset > svlen)
		1664	len = svlen - offset;
		1665
		1666	addr = (void *)(((intptr_t)addr) + offset);
		1667	eio_page_align (&addr, &len);
		1668	#if _POSIX_MEMLOCK_RANGE
		1669	RETVAL = munlock (addr, len);
		1670	#else
		1671	RETVAL = ((errno = ENOSYS), -1);
		1672	#endif
		1673	}
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	munlockall ()
		1679	CODE:
		1680	#if _POSIX_MEMLOCK
		1681	munlockall ();
		1682	#else
		1683	RETVAL = -1;
		1684	errno = ENOSYS;
		1685	#endif
		1686	OUTPUT:
		1687	RETVAL
		1688
		1689	void _on_next_submit (SV *cb)
		1690	CODE:
		1691	SvREFCNT_dec (on_next_submit);
		1692	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1693
		1694	PROTOTYPES: DISABLE
		1695
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1696	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1697
1212	void	1698	void
1213	cancel (aio_req_ornot req)	1699	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1700	CODE:
1216	req_cancel (req);	1701	eio_cancel (req);
		1702
		1703	void
		1704	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1705	PPCODE:
		1706	{
		1707	if (GIMME_V != G_VOID)
		1708	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1709
		1710	if (items > 1)
		1711	{
		1712	SV *cb_cv =get_cb (callback);
		1713
		1714	SvREFCNT_dec (req->callback);
		1715	req->callback = SvREFCNT_inc (cb_cv);
		1716	}
		1717	}
1217		1718
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1719	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1720
1220	void	1721	void
1221	add (aio_req grp, ...)	1722	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1723	PPCODE:
1224	{	1724	{
1225	int i;	1725	int i;
		1726
		1727	if (grp->int1 == 2)
		1728	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1729
1227	for (i = 1; i < items; ++i )	1730	for (i = 1; i < items; ++i )
1228	{	1731	{
1229	aio_req req = SvAIO_REQ (ST (i));	1732	aio_req req;
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237		1733
1238	if (GIMME_V != G_VOID)	1734	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1735	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1736
		1737	req = SvAIO_REQ (ST (i));
		1738
		1739	if (req)
		1740	eio_grp_add (grp, req);
1240	}	1741	}
1241	}	1742	}
1242		1743
		1744	void
		1745	cancel_subs (aio_req_ornot req)
		1746	CODE:
		1747	req_cancel_subs (req);
		1748
		1749	void
		1750	result (aio_req grp, ...)
		1751	CODE:
		1752	{
		1753	int i;
		1754	AV *av;
		1755
		1756	grp->errorno = errno;
		1757
		1758	av = newAV ();
		1759	av_extend (av, items - 1);
		1760
		1761	for (i = 1; i < items; ++i )
		1762	av_push (av, newSVsv (ST (i)));
		1763
		1764	SvREFCNT_dec (grp->sv1);
		1765	grp->sv1 = (SV *)av;
		1766	}
		1767
		1768	void
		1769	errno (aio_req grp, int errorno = errno)
		1770	CODE:
		1771	grp->errorno = errorno;
		1772
		1773	void
		1774	limit (aio_req grp, int limit)
		1775	CODE:
		1776	eio_grp_limit (grp, limit);
		1777
		1778	void
		1779	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1780	CODE:
		1781	{
		1782	SvREFCNT_dec (grp->sv2);
		1783	grp->sv2 = newSVsv (callback);
		1784	grp->feed = aio_grp_feed;
		1785
		1786	if (grp->int2 <= 0)
		1787	grp->int2 = 2;
		1788
		1789	eio_grp_limit (grp, grp->int2);
		1790	}
		1791

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