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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.181 by root, Tue Feb 15 03:21:41 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>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	22	# include <sys/mman.h>
27	# elif __freebsd	23	#endif
28	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
29	# include <sys/uio.h>	68	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if !HAVE_POSIX_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef S_IFIFO
		214	# define S_IFIFO 0
		215	#endif
		216	#ifndef S_IFCHR
		217	# define S_IFCHR 0
		218	#endif
		219	#ifndef S_IFBLK
		220	# define S_IFBLK 0
		221	#endif
		222	#ifndef S_IFLNK
		223	# define S_IFLNK 0
		224	#endif
		225	#ifndef S_IFREG
		226	# define S_IFREG 0
		227	#endif
		228	#ifndef S_IFDIR
		229	# define S_IFDIR 0
		230	#endif
		231	#ifndef S_IFWHT
		232	# define S_IFWHT 0
		233	#endif
		234	#ifndef S_IFSOCK
		235	# define S_IFSOCK 0
		236	#endif
		237
		238	#ifndef MAP_ANONYMOUS
		239	# ifdef MAP_ANON
		240	# define MAP_ANONYMOUS MAP_ANON
34	# else	241	# else
35	# error sendfile support requested but not available	242	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	243	# endif
37	#endif	244	#endif
38		245	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	246	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	247	#endif
43		248	#ifndef MAP_LOCKED
44	#if __ia64	249	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	250	#endif
		251	#ifndef MAP_NORESERVE
		252	# define MAP_NORESERVE 0
		253	#endif
		254	#ifndef MAP_POPULATE
		255	# define MAP_POPULATE 0
		256	#endif
		257	#ifndef MAP_NONBLOCK
		258	# define MAP_NONBLOCK 0
		259	#endif
		260
		261	#ifndef makedev
		262	# define makedev(maj,min) (((maj) << 8) | (min))
		263	#endif
		264	#ifndef major
		265	# define major(dev) ((dev) >> 8)
		266	#endif
		267	#ifndef minor
		268	# define minor(dev) ((dev) & 0xff)
		269	#endif
		270
		271	#ifndef PAGESIZE
		272	# define PAGESIZE sysconf (_SC_PAGESIZE)
		273	#endif
		274
		275	static int req_invoke (eio_req *req);
		276	#define EIO_FINISH(req) req_invoke (req)
		277	static void req_destroy (eio_req *grp);
		278	#define EIO_DESTROY(req) req_destroy (req)
49		279
50	enum {	280	enum {
51	REQ_QUIT,	281	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	};	282	};
63		283
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	284	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		285
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;	286	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	287	typedef eio_req *aio_req_ornot;
93		288
94	static int started, wanted;	289	static SV *on_next_submit;
95	static volatile int nreqs;	290	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	291	static int max_outstanding;
97	static int respipe [2];
98		292
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	293	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		294
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	295	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	296	static void req_cancel (aio_req req);
		297
		298	static void want_poll (void)
		299	{
		300	/* write a dummy byte to the pipe so fh becomes ready */
		301	s_epipe_signal (&respipe);
		302	}
		303
		304	static void done_poll (void)
		305	{
		306	/* read any signals sent by the worker threads */
		307	s_epipe_drain (&respipe);
		308	}
107		309
108	/* must be called at most once */	310	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	311	static SV *req_sv (aio_req req, HV *stash)
110	{	312	{
		313	if (!req->self)
		314	{
111	req->self = (SV *)newHV ();	315	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	316	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		317	}
113		318
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	319	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
115	}	320	}
116		321
117	static aio_req SvAIO_REQ (SV *sv)	322	static aio_req SvAIO_REQ (SV *sv)
118	{	323	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	324	MAGIC *mg;
		325
		326	if (!SvROK (sv)
		327	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		328	&& SvSTASH (SvRV (sv)) != aio_req_stash
		329	&& !sv_derived_from (sv, "IO::AIO::REQ")))
120	croak ("object of class " AIO_REQ_KLASS " expected");	330	croak ("object of class IO::AIO::REQ expected");
121		331
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	332	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		333
124	return mg ? (aio_req)mg->mg_ptr : 0;	334	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	335	}
126		336
127	static void poll_wait ()	337	static void aio_grp_feed (aio_req grp)
128	{	338	{
129	if (nreqs && !ress)	339	if (grp->sv2 && SvOK (grp->sv2))
130	{	340	{
131	fd_set rfd;	341	dSP;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		342
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	343	ENTER;
		344	SAVETMPS;
		345	PUSHMARK (SP);
		346	XPUSHs (req_sv (grp, aio_grp_stash));
		347	PUTBACK;
		348	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		349	SPAGAIN;
		350	FREETMPS;
		351	LEAVE;
136	}	352	}
137	}	353	}
138		354
139	static void req_invoke (aio_req req)	355	static void req_submit (eio_req *req)
140	{	356	{
141	dSP;	357	eio_submit (req);
142	int errorno = errno;
143		358
144	if (req->cancelled || !SvOK (req->callback))	359	if (expect_false (on_next_submit))
145	return;
146
147	errno = req->errorno;
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	360	{
154	case REQ_READDIR:	361	dSP;
		362	SV *cb = sv_2mortal (on_next_submit);
		363
		364	on_next_submit = 0;
		365
		366	PUSHMARK (SP);
		367	PUTBACK;
		368	call_sv (cb, G_DISCARD | G_EVAL);
		369	}
		370	}
		371
		372	static int req_invoke (eio_req *req)
		373	{
		374	if (req->flags & FLAG_SV2_RO_OFF)
		375	SvREADONLY_off (req->sv2);
		376
		377	if (!EIO_CANCELLED (req) && req->callback)
		378	{
		379	dSP;
		380	static SV *sv_result_cache; /* caches the result integer SV */
		381	SV *sv_result;
		382
		383	ENTER;
		384	SAVETMPS;
		385	PUSHMARK (SP);
		386	EXTEND (SP, 1);
		387
		388	/* do not recreate the result IV from scratch each time */
		389	if (expect_true (sv_result_cache))
155	{	390	{
156	SV *rv = &PL_sv_undef;	391	sv_result = sv_result_cache; sv_result_cache = 0;
		392	SvIV_set (sv_result, req->result);
		393	SvIOK_only (sv_result);
		394	}
		395	else
		396	{
		397	sv_result = newSViv (req->result);
		398	SvREADONLY_on (sv_result);
		399	}
157		400
158	if (req->result >= 0)	401	switch (req->type)
		402	{
		403	case EIO_READDIR:
159	{	404	{
160	char *buf = req->data2ptr;	405	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		406
163	while (req->result)	407	if (req->result >= 0)
164	{	408	{
		409	int i;
		410	char *names = (char *)req->ptr2;
		411	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
165	SV *sv = newSVpv (buf, 0);	412	AV *av = newAV ();
166		413
167	av_push (av, sv);	414	av_extend (av, req->result - 1);
		415
		416	for (i = 0; i < req->result; ++i)
		417	{
		418	if (req->int1 & EIO_READDIR_DENTS)
		419	{
		420	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		421
		422	if (req->int1 & EIO_READDIR_CUSTOM2)
		423	{
		424	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		425	AV *avent = newAV ();
		426
		427	av_extend (avent, 2);
		428
		429	if (!sv_type [ent->type])
		430	{
		431	sv_type [ent->type] = newSViv (ent->type);
		432	SvREADONLY_on (sv_type [ent->type]);
		433	}
		434
		435	av_store (avent, 0, namesv);
		436	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		437	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		438
		439	av_store (av, i, newRV_noinc ((SV *)avent));
		440	}
		441	else
		442	av_store (av, i, namesv);
		443
		444	++ent;
		445	}
		446	else
		447	{
		448	SV *name = newSVpv (names, 0);
		449	av_store (av, i, name);
168	buf += SvCUR (sv) + 1;	450	names += SvCUR (name) + 1;
169	req->result--;	451	}
		452	}
		453
		454	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	455	}
171		456
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	457	PUSHs (rv);
		458
		459	if (req->int1 & EIO_READDIR_CUSTOM1)
		460	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
173	}	461	}
		462	break;
174		463
		464	case EIO_OPEN:
		465	{
		466	/* convert fd to fh */
		467	SV *fh = &PL_sv_undef;
		468
		469	if (req->result >= 0)
		470	{
		471	GV *gv = (GV *)sv_newmortal ();
		472	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		473	char sym [64];
		474	int symlen;
		475
		476	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		477	gv_init (gv, aio_stash, sym, symlen, 0);
		478
		479	symlen = snprintf (
		480	sym,
		481	sizeof (sym),
		482	"%s&=%d",
		483	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		484	(int)req->result
		485	);
		486
		487	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		488	fh = (SV *)gv;
		489	}
		490
		491	PUSHs (fh);
		492	}
		493	break;
		494
		495	case EIO_STATVFS:
		496	case EIO_FSTATVFS:
		497	{
		498	SV *rv = &PL_sv_undef;
		499
		500	if (req->result >= 0)
		501	{
		502	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		503	HV *hv = newHV ();
		504
		505	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		506
		507	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		508	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		509	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		510	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		511	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		512	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		513	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		514	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		515	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		516	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		517	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		518	}
		519
175	XPUSHs (rv);	520	PUSHs (rv);
		521	}
		522
		523	break;
		524
		525	case EIO_GROUP:
		526	req->int1 = 2; /* mark group as finished */
		527
		528	if (req->sv1)
		529	{
		530	int i;
		531	AV *av = (AV *)req->sv1;
		532
		533	EXTEND (SP, AvFILL (av) + 1);
		534	for (i = 0; i <= AvFILL (av); ++i)
		535	PUSHs (*av_fetch (av, i, 0));
		536	}
		537	break;
		538
		539	case EIO_NOP:
		540	case EIO_BUSY:
		541	break;
		542
		543	case EIO_READLINK:
		544	if (req->result > 0)
		545	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		546	break;
		547
		548	case EIO_STAT:
		549	case EIO_LSTAT:
		550	case EIO_FSTAT:
		551	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		552	PL_laststatval = req->result;
		553	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		554	PUSHs (sv_result);
		555	break;
		556
		557	case EIO_READ:
		558	{
		559	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		560	*SvEND (req->sv2) = 0;
		561	SvPOK_only (req->sv2);
		562	SvSETMAGIC (req->sv2);
		563	PUSHs (sv_result);
		564	}
		565	break;
		566
		567	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		568	if (req->result > 0)
		569	SvIV_set (sv_result, 0);
		570	/* FALLTHROUGH */
		571
		572	default:
		573	PUSHs (sv_result);
		574	break;
176	}	575	}
177	break;
178		576
179	case REQ_OPEN:	577	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		578
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	579	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	580	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
187	SPAGAIN;	581	SPAGAIN;
188		582
189	fh = SvREFCNT_inc (POPs);	583	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		584	SvREFCNT_dec (sv_result);
		585	else
		586	sv_result_cache = sv_result;
190		587
191	PUSHMARK (SP);	588	FREETMPS;
192	XPUSHs (sv_2mortal (fh));	589	LEAVE;
193	}
194	break;
195		590
196	case REQ_SLEEP:	591	PUTBACK;
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	592	}
204		593
205		594	return !!SvTRUE (ERRSV);
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	595	}
220		596
221	static void req_free (aio_req req)	597	static void req_destroy (aio_req req)
222	{	598	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	599	if (req->self)
239	{	600	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	601	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	602	SvREFCNT_dec (req->self);
242	}	603	}
243		604
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	605	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	606	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	607	SvREFCNT_dec (req->callback);
258
259	if (req->type == REQ_READDIR && req->result >= 0)
260	free (req->data2ptr);
261		608
262	Safefree (req);	609	Safefree (req);
263	}	610	}
264		611
265	static void req_cancel (aio_req req)	612	static void req_cancel_subs (aio_req grp)
266	{	613	{
267	req->cancelled = 1;	614	aio_req sub;
268		615
269	if (req->type == REQ_GROUP)	616	if (grp->type != EIO_GROUP)
		617	return;
		618
		619	SvREFCNT_dec (grp->sv2);
		620	grp->sv2 = 0;
		621
		622	eio_grp_cancel (grp);
		623	}
		624
		625	static void
		626	create_respipe (void)
		627	{
		628	if (s_epipe_renew (&respipe))
		629	croak ("IO::AIO: unable to initialize result pipe");
		630	}
		631
		632	static void poll_wait (void)
		633	{
		634	while (eio_nreqs ())
270	{	635	{
271	aio_req sub;	636	int size;
272		637
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	638	X_LOCK (reslock);
274	req_cancel (sub);	639	size = res_queue.size;
		640	X_UNLOCK (reslock);
		641
		642	if (size)
		643	return;
		644
		645	etp_maybe_start_thread ();
		646
		647	s_epipe_wait (&respipe);
275	}	648	}
276	}	649	}
277		650
278	static int poll_cb ()	651	static int poll_cb (void)
279	{	652	{
280	dSP;
281	int count = 0;
282	int do_croak = 0;
283	aio_req req;
284
285	for (;;)	653	for (;;)
286	{	654	{
287	pthread_mutex_lock (&reslock);	655	int res = eio_poll ();
288	req = ress;
289		656
290	if (req)	657	if (res > 0)
291	{
292	ress = req->next;
293
294	if (!ress)
295	{
296	/* read any signals sent by the worker threads */
297	char buf [32];
298	while (read (respipe [0], buf, 32) == 32)
299	;
300
301	rese = 0;
302	}
303	}
304
305	pthread_mutex_unlock (&reslock);
306
307	if (!req)
308	break;	658	croak (0);
309		659
310	nreqs--;	660	if (!max_outstanding || max_outstanding > eio_nreqs ())
		661	return res;
311		662
312	if (req->type == REQ_QUIT)	663	poll_wait ();
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	664	}
341
342	return count;
343	}	665	}
344		666
345	static void *aio_proc(void *arg);
346
347	static void start_thread (void)	667	static void atfork_child (void)
348	{	668	{
349	sigset_t fullsigset, oldsigset;	669	create_respipe ();
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}
365
366	static void req_send (aio_req req)
367	{
368	while (started < wanted && nreqs >= started)
369	start_thread ();
370
371	nreqs++;
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}
399
400	static void end_thread (void)
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405
406	req_send (req);
407	}
408
409	static void min_parallel (int nthreads)
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414
415	static void max_parallel (int nthreads)
416	{
417	int cur = started;
418
419	if (wanted > nthreads)
420	wanted = nthreads;
421
422	while (cur > wanted)
423	{
424	end_thread ();
425	cur--;
426	}
427
428	while (started > wanted)
429	{
430	poll_wait ();
431	poll_cb ();
432	}
433	}
434
435	static void create_pipe ()
436	{
437	if (pipe (respipe))
438	croak ("unable to initialize result pipe");
439
440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
441	croak ("cannot set result pipe to nonblocking mode");
442
443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
444	croak ("cannot set result pipe to nonblocking mode");
445	}	670	}
446		671
447	/*****************************************************************************/	672	/*****************************************************************************/
448	/* work around various missing functions */
449		673
450	#if !HAVE_PREADWRITE	674	#if !_POSIX_MAPPED_FILES
451	# define pread aio_pread	675	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
452	# define pwrite aio_pwrite	676	# define munmap(addr,length) (errno = ENOSYS, -1)
453
454	/*
455	* make our pread/pwrite safe against themselves, but not against
456	* normal read/write by using a mutex. slows down execution a lot,
457	* but that's your problem, not mine.
458	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
460
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
462	{
463	ssize_t res;
464	off_t ooffset;
465
466	pthread_mutex_lock (&preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);
472
473	return res;
474	}
475
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
477	{
478	ssize_t res;
479	off_t ooffset;
480
481	pthread_mutex_lock (&preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);
487
488	return res;
489	}
490	#endif
491
492	#if !HAVE_FDATASYNC
493	# define fdatasync fsync
494	#endif
495
496	#if !HAVE_READAHEAD
497	# define readahead aio_readahead
498
499	static ssize_t readahead (int fd, off_t offset, size_t count)
500	{
501	char readahead_buf[4096];
502
503	while (count > 0)
504	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
506
507	pread (fd, readahead_buf, len, offset);
508	offset += len;
509	count -= len;
510	}
511
512	errno = 0;
513	}
514	#endif
515
516	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r
518
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
520
521	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
522	{
523	struct dirent *e;
524	int errorno;
525
526	pthread_mutex_lock (&readdirlock);
527
528	e = readdir (dirp);
529	errorno = errno;
530
531	if (e)
532	{
533	*res = ent;
534	strcpy (ent->d_name, e->d_name);
535	}
536	else
537	*res = 0;
538
539	pthread_mutex_unlock (&readdirlock);
540
541	errno = errorno;
542	return e ? 0 : -1;
543	}
544	#endif
545
546	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
548	{
549	ssize_t res;
550
551	if (!count)
552	return 0;
553
554	#if HAVE_SENDFILE
555	# if __linux
556	res = sendfile (ofd, ifd, &offset, count);
557
558	# elif __freebsd
559	/*
560	* Of course, the freebsd sendfile is a dire hack with no thoughts
561	* wasted on making it similar to other I/O functions.
562	*/
563	{
564	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566
567	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
569	res = sbytes;
570	}
571
572	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);
574
575	# elif __solaris
576	{
577	struct sendfilevec vec;
578	size_t sbytes;
579
580	vec.sfv_fd = ifd;
581	vec.sfv_flag = 0;
582	vec.sfv_off = offset;
583	vec.sfv_len = count;
584
585	res = sendfilev (ofd, &vec, 1, &sbytes);
586
587	if (res < 0 && sbytes)
588	res = sbytes;
589	}
590
591	# endif	677	#endif
592	#else
593	res = -1;
594	errno = ENOSYS;
595	#endif
596		678
597	if (res < 0	679	#if !_POSIX_MEMORY_PROTECTION
598	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	680	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
599	#if __solaris	681	# define PROT_NONE 0
600	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	682	# define PROT_WRITE 0
		683	# define MAP_PRIVATE 0
		684	# define MAP_SHARED 0
		685	# define MAP_FIXED 0
601	#endif	686	#endif
602	)
603	)
604	{
605	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];
607	res = 0;
608		687
609	while (count)	688	#define MMAP_MAGIC PERL_MAGIC_ext
610	{
611	ssize_t cnt;
612
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
614		689
615	if (cnt <= 0)	690	static int
616	{	691	mmap_free (pTHX_ SV *sv, MAGIC *mg)
617	if (cnt && !res) res = -1;
618	break;
619	}
620
621	cnt = write (ofd, buf, cnt);
622
623	if (cnt <= 0)
624	{
625	if (cnt && !res) res = -1;
626	break;
627	}
628
629	offset += cnt;
630	res += cnt;
631	count -= cnt;
632	}
633	}
634
635	return res;
636	}
637
638	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)
640	{	692	{
641	DIR *dirp = opendir (path);	693	int old_errno = errno;
642	union	694	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
643	{
644	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;
647	struct dirent *entp;
648	char *name, *names;
649	int memlen = 4096;
650	int memofs = 0;
651	int res = 0;
652	int errorno;
653
654	if (!dirp)
655	return -1;
656
657	names = malloc (memlen);
658
659	for (;;)
660	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);
662
663	if (!entp)
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;	695	errno = old_errno;
688	closedir (dirp);
689		696
690	if (errorno)	697	mg->mg_obj = 0; /* just in case */
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696		698
697	*namesp = (void *)names;	699	SvREADONLY_off (sv);
		700
		701	if (SvPVX (sv) != mg->mg_ptr)
		702	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		703
		704	SvCUR_set (sv, 0);
		705	SvPVX (sv) = 0;
		706	SvOK_off (sv);
		707
698	return res;	708	return 0;
699	}	709	}
		710
		711	static MGVTBL mmap_vtbl = {
		712	0, 0, 0, 0, mmap_free
		713	};
700		714
701	/*****************************************************************************/	715	/*****************************************************************************/
702		716
703	static void *aio_proc (void *thr_arg)	717	static SV *
		718	get_cb (SV *cb_sv)
704	{	719	{
705	aio_req req;	720	SvGETMAGIC (cb_sv);
706	int type;	721	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711
712	for (;;)
713	{
714	req = reqs;
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721
722	if (req)
723	break;
724
725	pthread_cond_wait (&reqwait, &reqlock);
726	}
727
728	pthread_mutex_unlock (&reqlock);
729
730	errno = 0; /* strictly unnecessary */
731
732	if (!req->cancelled)
733	switch (req->type)
734	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
737
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
740
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
756
757	case REQ_SLEEP:
758	{
759	struct timeval tv;
760
761	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;
763
764	req->result = select (0, 0, 0, 0, &tv);
765	}
766
767	case REQ_QUIT:
768	break;
769
770	default:
771	req->result = ENOSYS;
772	break;
773	}
774
775	req->errorno = errno;
776
777	pthread_mutex_lock (&reslock);
778
779	req->next = 0;
780
781	if (rese)
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);
792	}
793
794	pthread_mutex_unlock (&reslock);
795	}
796	while (type != REQ_QUIT);
797
798	return 0;
799	}
800
801	/*****************************************************************************/
802
803	static void atfork_prepare (void)
804	{
805	pthread_mutex_lock (&reqlock);
806	pthread_mutex_lock (&reslock);
807	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);
809	#endif
810	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);
812	#endif
813	}
814
815	static void atfork_parent (void)
816	{
817	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);
819	#endif
820	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);
822	#endif
823	pthread_mutex_unlock (&reslock);
824	pthread_mutex_unlock (&reqlock);
825	}
826
827	static void atfork_child (void)
828	{
829	aio_req prv;
830
831	started = 0;
832
833	while (reqs)
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);
838	}
839
840	reqs = reqe = 0;
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850
851	close (respipe [0]);
852	close (respipe [1]);
853	create_pipe ();
854
855	atfork_parent ();
856	}	722	}
857		723
858	#define dREQ \	724	#define dREQ \
		725	SV *cb_cv; \
859	aio_req req; \	726	aio_req req; \
		727	int req_pri = next_pri; \
		728	next_pri = EIO_PRI_DEFAULT; \
860	\	729	\
861	if (SvOK (callback) && !SvROK (callback)) \	730	cb_cv = get_cb (callback); \
862	croak ("callback must be undef or of reference type"); \
863	\	731	\
864	Newz (0, req, 1, aio_cb); \	732	Newz (0, req, 1, eio_req); \
865	if (!req) \	733	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	734	croak ("out of memory during eio_req allocation"); \
867	\	735	\
868	req->callback = newSVsv (callback)	736	req->callback = SvREFCNT_inc (cb_cv); \
		737	req->pri = req_pri
869		738
870	#define REQ_SEND \	739	#define REQ_SEND \
		740	PUTBACK; \
871	req_send (req); \	741	req_submit (req); \
		742	SPAGAIN; \
872	\	743	\
873	if (GIMME_V != G_VOID) \	744	if (GIMME_V != G_VOID) \
874	XPUSHs (req_sv (req, AIO_REQ_KLASS));	745	XPUSHs (req_sv (req, aio_req_stash));
875		746
876	MODULE = IO::AIO PACKAGE = IO::AIO	747	MODULE = IO::AIO PACKAGE = IO::AIO
877		748
878	PROTOTYPES: ENABLE	749	PROTOTYPES: ENABLE
879		750
880	BOOT:	751	BOOT:
881	{	752	{
		753	static const struct {
		754	const char *name;
		755	IV iv;
		756	} *civ, const_iv[] = {
		757	# define const_niv(name, value) { # name, (IV) value },
		758	# define const_iv(name) { # name, (IV) name },
		759	# define const_eio(name) { # name, (IV) EIO_ ## name },
		760	const_iv (EXDEV)
		761	const_iv (ENOSYS)
		762	const_iv (O_RDONLY)
		763	const_iv (O_WRONLY)
		764	const_iv (O_RDWR)
		765	const_iv (O_CREAT)
		766	const_iv (O_TRUNC)
		767	const_iv (O_EXCL)
		768	const_iv (O_APPEND)
		769
		770	const_iv (S_IFIFO)
		771	const_iv (S_IFCHR)
		772	const_iv (S_IFBLK)
		773	const_iv (S_IFLNK)
		774	const_iv (S_IFREG)
		775	const_iv (S_IFDIR)
		776	const_iv (S_IFWHT)
		777	const_iv (S_IFSOCK)
		778	const_iv (S_IFMT)
		779
		780	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		781	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		782	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		783	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		784	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		785	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		786
		787	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		788	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		789	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		790	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		791	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		792
		793	const_iv (ST_RDONLY)
		794	const_iv (ST_NOSUID)
		795	const_iv (ST_NODEV)
		796	const_iv (ST_NOEXEC)
		797	const_iv (ST_SYNCHRONOUS)
		798	const_iv (ST_MANDLOCK)
		799	const_iv (ST_WRITE)
		800	const_iv (ST_APPEND)
		801	const_iv (ST_IMMUTABLE)
		802	const_iv (ST_NOATIME)
		803	const_iv (ST_NODIRATIME)
		804	const_iv (ST_RELATIME)
		805
		806	const_iv (PROT_NONE)
		807	const_iv (PROT_EXEC)
		808	const_iv (PROT_READ)
		809	const_iv (PROT_WRITE)
		810
		811	/*const_iv (MAP_FIXED)*/
		812	const_iv (MAP_PRIVATE)
		813	const_iv (MAP_SHARED)
		814	const_iv (MAP_ANONYMOUS)
		815
		816	/* linuxish */
		817	const_iv (MAP_HUGETLB)
		818	const_iv (MAP_LOCKED)
		819	const_iv (MAP_NORESERVE)
		820	const_iv (MAP_POPULATE)
		821	const_iv (MAP_NONBLOCK)
		822
		823	const_eio (MCL_FUTURE)
		824	const_eio (MCL_CURRENT)
		825
		826	const_eio (MS_ASYNC)
		827	const_eio (MS_INVALIDATE)
		828	const_eio (MS_SYNC)
		829
		830	const_eio (MT_MODIFY)
		831
		832	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		833	const_eio (SYNC_FILE_RANGE_WRITE)
		834	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		835
		836	const_eio (READDIR_DENTS)
		837	const_eio (READDIR_DIRS_FIRST)
		838	const_eio (READDIR_STAT_ORDER)
		839	const_eio (READDIR_FOUND_UNKNOWN)
		840
		841	const_eio (DT_UNKNOWN)
		842	const_eio (DT_FIFO)
		843	const_eio (DT_CHR)
		844	const_eio (DT_DIR)
		845	const_eio (DT_BLK)
		846	const_eio (DT_REG)
		847	const_eio (DT_LNK)
		848	const_eio (DT_SOCK)
		849	const_eio (DT_WHT)
		850	};
		851
882	HV *stash = gv_stashpv ("IO::AIO", 1);	852	aio_stash = gv_stashpv ("IO::AIO" , 1);
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	853	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	854	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
886		855
		856	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		857	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		858
		859	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		860
887	create_pipe ();	861	create_respipe ();
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
889	}
890		862
		863	if (eio_init (want_poll, done_poll) < 0)
		864	croak ("IO::AIO: unable to initialise eio library");
		865
		866	/* atfork child called in fifo order, so before eio's handler */
		867	X_THREAD_ATFORK (0, 0, atfork_child);
		868	}
		869
891	void	870	void
892	min_parallel (nthreads)	871	max_poll_reqs (unsigned int nreqs)
893	int nthreads
894	PROTOTYPE: $	872	PROTOTYPE: $
		873	CODE:
		874	eio_set_max_poll_reqs (nreqs);
895		875
896	void	876	void
897	max_parallel (nthreads)	877	max_poll_time (double nseconds)
898	int nthreads
899	PROTOTYPE: $	878	PROTOTYPE: $
900
901	int
902	max_outstanding (nreqs)
903	int nreqs
904	PROTOTYPE: $
905	CODE:	879	CODE:
906	RETVAL = max_outstanding;	880	eio_set_max_poll_time (nseconds);
		881
		882	void
		883	min_parallel (unsigned int nthreads)
		884	PROTOTYPE: $
		885	CODE:
		886	eio_set_min_parallel (nthreads);
		887
		888	void
		889	max_parallel (unsigned int nthreads)
		890	PROTOTYPE: $
		891	CODE:
		892	eio_set_max_parallel (nthreads);
		893
		894	void
		895	max_idle (unsigned int nthreads)
		896	PROTOTYPE: $
		897	CODE:
		898	eio_set_max_idle (nthreads);
		899
		900	void
		901	idle_timeout (unsigned int seconds)
		902	PROTOTYPE: $
		903	CODE:
		904	eio_set_idle_timeout (seconds);
		905
		906	void
		907	max_outstanding (unsigned int maxreqs)
		908	PROTOTYPE: $
		909	CODE:
907	max_outstanding = nreqs;	910	max_outstanding = maxreqs;
908		911
909	void	912	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	913	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$
916	PPCODE:	914	PPCODE:
917	{	915	{
918	dREQ;	916	dREQ;
919		917
920	req->type = REQ_OPEN;	918	req->type = EIO_OPEN;
921	req->data = newSVsv (pathname);	919	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	920	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	921	req->int1 = flags;
924	req->mode = mode;	922	req->int2 = mode;
925		923
926	REQ_SEND;	924	REQ_SEND;
927	}	925	}
928		926
929	void	927	void
930	aio_close (fh,callback=&PL_sv_undef)	928	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$
934	ALIAS:	929	ALIAS:
935	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	930	aio_fsync = EIO_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	931	aio_fdatasync = EIO_FDATASYNC
938	PPCODE:	932	PPCODE:
939	{	933	{
		934	int fd = s_fileno_croak (fh, 0);
940	dREQ;	935	dREQ;
941		936
942	req->type = ix;	937	req->type = ix;
943	req->fh = newSVsv (fh);	938	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	939	req->int1 = fd;
945		940
946	REQ_SEND (req);	941	REQ_SEND (req);
947	}	942	}
948		943
949	void	944	void
		945	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		946	PPCODE:
		947	{
		948	int fd = s_fileno_croak (fh, 0);
		949	dREQ;
		950
		951	req->type = EIO_SYNC_FILE_RANGE;
		952	req->sv1 = newSVsv (fh);
		953	req->int1 = fd;
		954	req->offs = offset;
		955	req->size = nbytes;
		956	req->int2 = flags;
		957
		958	REQ_SEND (req);
		959	}
		960
		961	void
		962	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		963	PPCODE:
		964	{
		965	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		966	int fd = s_fileno_croak (fh, 0);
		967	dREQ;
		968
		969	if (close_pipe < 0)
		970	{
		971	int pipefd [2];
		972
		973	if (pipe (pipefd) < 0
		974	|| close (pipefd [1]) < 0
		975	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		976	abort (); /*D*/
		977
		978	close_pipe = pipefd [0];
		979	}
		980
		981	req->type = EIO_DUP2;
		982	req->int1 = close_pipe;
		983	req->sv2 = newSVsv (fh);
		984	req->int2 = fd;
		985
		986	REQ_SEND (req);
		987	}
		988
		989	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	990	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:	991	ALIAS:
958	aio_read = REQ_READ	992	aio_read = EIO_READ
959	aio_write = REQ_WRITE	993	aio_write = EIO_WRITE
960	PROTOTYPE: $$$$$;$
961	PPCODE:	994	PPCODE:
962	{	995	{
963	aio_req req;
964	STRLEN svlen;	996	STRLEN svlen;
		997	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
965	char *svptr = SvPVbyte (data, svlen);	998	char *svptr = SvPVbyte (data, svlen);
966		999	UV len = SvUV (length);
967	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);
969		1000
970	if (dataoffset < 0)	1001	if (dataoffset < 0)
971	dataoffset += svlen;	1002	dataoffset += svlen;
972		1003
973	if (dataoffset < 0 || dataoffset > svlen)	1004	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	1005	croak ("dataoffset outside of data scalar");
975		1006
976	if (ix == REQ_WRITE)	1007	if (ix == EIO_WRITE)
977	{	1008	{
978	/* write: check length and adjust. */	1009	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	1010	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	1011	len = svlen - dataoffset;
981	}	1012	}
982	else	1013	else
983	{	1014	{
984	/* read: grow scalar as necessary */	1015	/* read: check type and grow scalar as necessary */
		1016	SvUPGRADE (data, SVt_PV);
985	svptr = SvGROW (data, length + dataoffset);	1017	svptr = SvGROW (data, len + dataoffset + 1);
986	}	1018	}
987
988	if (length < 0)
989	croak ("length must not be negative");
990		1019
991	{	1020	{
992	dREQ;	1021	dREQ;
993		1022
994	req->type = ix;	1023	req->type = ix;
995	req->fh = newSVsv (fh);	1024	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1025	req->int1 = fd;
997	: IoOFP (sv_2io (fh)));	1026	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	1027	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	1028	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	1029	req->ptr2 = (char *)svptr + dataoffset;
		1030	req->stroffset = dataoffset;
1002		1031
1003	if (!SvREADONLY (data))	1032	if (!SvREADONLY (data))
1004	{	1033	{
1005	SvREADONLY_on (data);	1034	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	1035	req->flags |= FLAG_SV2_RO_OFF;
1007	}	1036	}
1008		1037
1009	REQ_SEND;	1038	REQ_SEND;
1010	}	1039	}
1011	}	1040	}
1012		1041
1013	void	1042	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1043	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1015	SV * out_fh
1016	SV * in_fh
1017	UV in_offset
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$
1021	PPCODE:	1044	PPCODE:
1022	{	1045	{
		1046	SV *data;
		1047	dREQ;
		1048
		1049	req->type = EIO_READLINK;
		1050	req->sv1 = newSVsv (path);
		1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1052
		1053	REQ_SEND;
		1054	}
		1055
		1056	void
		1057	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1058	PPCODE:
		1059	{
		1060	int ifd = s_fileno_croak (in_fh , 0);
		1061	int ofd = s_fileno_croak (out_fh, 1);
1023	dREQ;	1062	dREQ;
1024		1063
1025	req->type = REQ_SENDFILE;	1064	req->type = EIO_SENDFILE;
1026	req->fh = newSVsv (out_fh);	1065	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1066	req->int1 = ofd;
1028	req->fh2 = newSVsv (in_fh);	1067	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1068	req->int2 = ifd;
1030	req->offset = in_offset;	1069	req->offs = in_offset;
1031	req->length = length;	1070	req->size = length;
1032		1071
1033	REQ_SEND;	1072	REQ_SEND;
1034	}	1073	}
1035		1074
1036	void	1075	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1076	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$
1043	PPCODE:	1077	PPCODE:
1044	{	1078	{
		1079	int fd = s_fileno_croak (fh, 0);
1045	dREQ;	1080	dREQ;
1046		1081
1047	req->type = REQ_READAHEAD;	1082	req->type = EIO_READAHEAD;
1048	req->fh = newSVsv (fh);	1083	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1084	req->int1 = fd;
1050	req->offset = offset;	1085	req->offs = offset;
1051	req->length = length;	1086	req->size = length;
1052		1087
1053	REQ_SEND;	1088	REQ_SEND;
1054	}	1089	}
1055		1090
1056	void	1091	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	1092	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	1093	ALIAS:
1061	aio_stat = REQ_STAT	1094	aio_stat = EIO_STAT
1062	aio_lstat = REQ_LSTAT	1095	aio_lstat = EIO_LSTAT
		1096	aio_statvfs = EIO_STATVFS
1063	PPCODE:	1097	PPCODE:
1064	{	1098	{
1065	dREQ;	1099	dREQ;
1066		1100
1067	New (0, req->statdata, 1, Stat_t);	1101	req->sv1 = newSVsv (fh_or_path);
1068	if (!req->statdata)
1069	{
1070	req_free (req);
1071	croak ("out of memory during aio_req->statdata allocation");
1072	}
1073		1102
1074	if (SvPOK (fh_or_path))	1103	if (SvPOK (req->sv1))
1075	{	1104	{
1076	req->type = ix;	1105	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	1106	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	1107	}
1080	else	1108	else
1081	{	1109	{
1082	req->type = REQ_FSTAT;	1110	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1111	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	1112	}
1086		1113
1087	REQ_SEND;	1114	REQ_SEND;
1088	}	1115	}
1089		1116
		1117	UV
		1118	major (UV dev)
		1119	ALIAS:
		1120	minor = 1
		1121	CODE:
		1122	RETVAL = ix ? major (dev) : minor (dev);
		1123	OUTPUT:
		1124	RETVAL
		1125
		1126	UV
		1127	makedev (UV maj, UV min)
		1128	CODE:
		1129	RETVAL = makedev (maj, min);
		1130	OUTPUT:
		1131	RETVAL
		1132
1090	void	1133	void
		1134	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1140	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1141	req->sv1 = newSVsv (fh_or_path);
		1142
		1143	if (SvPOK (req->sv1))
		1144	{
		1145	req->type = EIO_UTIME;
		1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1147	}
		1148	else
		1149	{
		1150	req->type = EIO_FUTIME;
		1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1152	}
		1153
		1154	REQ_SEND;
		1155	}
		1156
		1157	void
		1158	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1159	PPCODE:
		1160	{
		1161	dREQ;
		1162
		1163	req->sv1 = newSVsv (fh_or_path);
		1164	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1165
		1166	if (SvPOK (req->sv1))
		1167	{
		1168	req->type = EIO_TRUNCATE;
		1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1170	}
		1171	else
		1172	{
		1173	req->type = EIO_FTRUNCATE;
		1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1175	}
		1176
		1177	REQ_SEND;
		1178	}
		1179
		1180	void
		1181	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1182	ALIAS:
		1183	aio_chmod = EIO_CHMOD
		1184	aio_mkdir = EIO_MKDIR
		1185	PPCODE:
		1186	{
		1187	dREQ;
		1188
		1189	req->int2 = mode;
		1190	req->sv1 = newSVsv (fh_or_path);
		1191
		1192	if (SvPOK (req->sv1))
		1193	{
		1194	req->type = ix;
		1195	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1196	}
		1197	else
		1198	{
		1199	req->type = EIO_FCHMOD;
		1200	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1201	}
		1202
		1203	REQ_SEND;
		1204	}
		1205
		1206	void
		1207	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1208	PPCODE:
		1209	{
		1210	dREQ;
		1211
		1212	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1213	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1214	req->sv1 = newSVsv (fh_or_path);
		1215
		1216	if (SvPOK (req->sv1))
		1217	{
		1218	req->type = EIO_CHOWN;
		1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1220	}
		1221	else
		1222	{
		1223	req->type = EIO_FCHOWN;
		1224	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1225	}
		1226
		1227	REQ_SEND;
		1228	}
		1229
		1230	void
		1231	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1232	PPCODE:
		1233	{
		1234	dREQ;
		1235
		1236	req->type = EIO_READDIR;
		1237	req->sv1 = newSVsv (pathname);
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1240
		1241	if (flags & EIO_READDIR_DENTS)
		1242	req->int1 |= EIO_READDIR_CUSTOM2;
		1243
		1244	REQ_SEND;
		1245	}
		1246
		1247	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	1248	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	1249	ALIAS:
1095	aio_unlink = REQ_UNLINK	1250	aio_unlink = EIO_UNLINK
1096	aio_rmdir = REQ_RMDIR	1251	aio_rmdir = EIO_RMDIR
1097	aio_readdir = REQ_READDIR	1252	aio_readdir = EIO_READDIR
1098	PPCODE:	1253	PPCODE:
1099	{	1254	{
1100	dREQ;	1255	dREQ;
1101		1256
1102	req->type = ix;	1257	req->type = ix;
1103	req->data = newSVsv (pathname);	1258	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	1259	req->ptr1 = SvPVbyte_nolen (req->sv1);
1105		1260
1106	REQ_SEND;	1261	REQ_SEND;
1107	}	1262	}
1108		1263
1109	void	1264	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1265	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:	1266	ALIAS:
1115	aio_link = REQ_LINK	1267	aio_link = EIO_LINK
1116	aio_symlink = REQ_SYMLINK	1268	aio_symlink = EIO_SYMLINK
1117	aio_rename = REQ_RENAME	1269	aio_rename = EIO_RENAME
1118	PPCODE:	1270	PPCODE:
1119	{	1271	{
1120	dREQ;	1272	dREQ;
1121		1273
1122	req->type = ix;	1274	req->type = ix;
1123	req->fh = newSVsv (oldpath);	1275	req->sv1 = newSVsv (oldpath);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	1276	req->ptr1 = SvPVbyte_nolen (req->sv1);
1125	req->data = newSVsv (newpath);	1277	req->sv2 = newSVsv (newpath);
1126	req->dataptr = SvPVbyte_nolen (req->data);	1278	req->ptr2 = SvPVbyte_nolen (req->sv2);
1127		1279
1128	REQ_SEND;	1280	REQ_SEND;
1129	}	1281	}
1130		1282
1131	void	1283	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1284	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1285	PPCODE:
1136	{	1286	{
1137	dREQ;	1287	dREQ;
1138		1288
1139	req->type = REQ_SLEEP;	1289	req->type = EIO_MKNOD;
1140	req->fd = delay < 0. ? 0 : delay;	1290	req->sv1 = newSVsv (pathname);
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1291	req->ptr1 = SvPVbyte_nolen (req->sv1);
1142		1292	req->int2 = (mode_t)mode;
		1293	req->offs = dev;
		1294
1143	REQ_SEND;	1295	REQ_SEND;
1144	}	1296	}
1145		1297
1146	void	1298	void
1147	aio_group (callback=&PL_sv_undef)	1299	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1148	SV * callback	1300	ALIAS:
1149	PROTOTYPE: ;$	1301	aio_mtouch = EIO_MTOUCH
		1302	aio_msync = EIO_MSYNC
1150	PPCODE:	1303	PPCODE:
1151	{	1304	{
		1305	STRLEN svlen;
		1306	char *svptr = SvPVbyte (data, svlen);
		1307	UV len = SvUV (length);
		1308
		1309	if (offset < 0)
		1310	offset += svlen;
		1311
		1312	if (offset < 0 || offset > svlen)
		1313	croak ("offset outside of scalar");
		1314
		1315	if (!SvOK (length) || len + offset > svlen)
		1316	len = svlen - offset;
		1317
		1318	{
		1319	dREQ;
		1320
		1321	req->type = ix;
		1322	req->sv2 = SvREFCNT_inc (data);
		1323	req->ptr2 = (char *)svptr + offset;
		1324	req->size = len;
		1325	req->int1 = flags;
		1326
		1327	REQ_SEND;
		1328	}
		1329	}
		1330
		1331	void
		1332	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	STRLEN svlen;
		1336	char *svptr = SvPVbyte (data, svlen);
		1337	UV len = SvUV (length);
		1338
		1339	if (offset < 0)
		1340	offset += svlen;
		1341
		1342	if (offset < 0 || offset > svlen)
		1343	croak ("offset outside of scalar");
		1344
		1345	if (!SvOK (length) || len + offset > svlen)
		1346	len = svlen - offset;
		1347
		1348	{
		1349	dREQ;
		1350
		1351	req->type = EIO_MLOCK;
		1352	req->sv2 = SvREFCNT_inc (data);
		1353	req->ptr2 = (char *)svptr + offset;
		1354	req->size = len;
		1355
		1356	REQ_SEND;
		1357	}
		1358	}
		1359
		1360	void
		1361	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1362	PPCODE:
		1363	{
		1364	dREQ;
		1365
		1366	req->type = EIO_MLOCKALL;
		1367	req->int1 = flags;
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
		1373	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
1152	dREQ;	1376	dREQ;
		1377
		1378	req->type = EIO_BUSY;
		1379	req->nv1 = delay < 0. ? 0. : delay;
		1380
		1381	REQ_SEND;
		1382	}
		1383
		1384	void
		1385	aio_group (SV *callback=&PL_sv_undef)
		1386	PPCODE:
		1387	{
		1388	dREQ;
		1389
1153	req->type = REQ_GROUP;	1390	req->type = EIO_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1391
1157	req_send (req);	1392	req_submit (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1393	XPUSHs (req_sv (req, aio_grp_stash));
1159	}	1394	}
		1395
		1396	void
		1397	aio_nop (SV *callback=&PL_sv_undef)
		1398	ALIAS:
		1399	aio_nop = EIO_NOP
		1400	aio_sync = EIO_SYNC
		1401	PPCODE:
		1402	{
		1403	dREQ;
		1404
		1405	req->type = ix;
		1406
		1407	REQ_SEND;
		1408	}
		1409
		1410	int
		1411	aioreq_pri (int pri = 0)
		1412	CODE:
		1413	RETVAL = next_pri;
		1414	if (items > 0)
		1415	{
		1416	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1417	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1418	next_pri = pri;
		1419	}
		1420	OUTPUT:
		1421	RETVAL
		1422
		1423	void
		1424	aioreq_nice (int nice = 0)
		1425	CODE:
		1426	nice = next_pri - nice;
		1427	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1428	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1429	next_pri = nice;
1160		1430
1161	void	1431	void
1162	flush ()	1432	flush ()
1163	PROTOTYPE:
1164	CODE:	1433	CODE:
1165	while (nreqs)	1434	while (eio_nreqs ())
1166	{	1435	{
1167	poll_wait ();	1436	poll_wait ();
1168	poll_cb ();	1437	poll_cb ();
1169	}	1438	}
1170		1439
1171	void
1172	poll()
1173	PROTOTYPE:
1174	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();
1178	poll_cb ();
1179	}
1180
1181	int	1440	int
1182	poll_fileno()	1441	poll ()
1183	PROTOTYPE:
1184	CODE:	1442	CODE:
1185	RETVAL = respipe [0];	1443	poll_wait ();
1186	OUTPUT:
1187	RETVAL
1188
1189	int
1190	poll_cb(...)
1191	PROTOTYPE:
1192	CODE:
1193	RETVAL = poll_cb ();	1444	RETVAL = poll_cb ();
1194	OUTPUT:	1445	OUTPUT:
1195	RETVAL	1446	RETVAL
1196		1447
1197	void
1198	poll_wait()
1199	PROTOTYPE:
1200	CODE:
1201	if (nreqs)
1202	poll_wait ();
1203
1204	int	1448	int
1205	nreqs()	1449	poll_fileno ()
1206	PROTOTYPE:
1207	CODE:	1450	CODE:
1208	RETVAL = nreqs;	1451	RETVAL = s_epipe_fd (&respipe);
1209	OUTPUT:	1452	OUTPUT:
1210	RETVAL	1453	RETVAL
1211		1454
		1455	int
		1456	poll_cb (...)
		1457	PROTOTYPE:
		1458	CODE:
		1459	RETVAL = poll_cb ();
		1460	OUTPUT:
		1461	RETVAL
		1462
		1463	void
		1464	poll_wait ()
		1465	CODE:
		1466	poll_wait ();
		1467
		1468	int
		1469	nreqs ()
		1470	CODE:
		1471	RETVAL = eio_nreqs ();
		1472	OUTPUT:
		1473	RETVAL
		1474
		1475	int
		1476	nready ()
		1477	CODE:
		1478	RETVAL = eio_nready ();
		1479	OUTPUT:
		1480	RETVAL
		1481
		1482	int
		1483	npending ()
		1484	CODE:
		1485	RETVAL = eio_npending ();
		1486	OUTPUT:
		1487	RETVAL
		1488
		1489	int
		1490	nthreads ()
		1491	CODE:
		1492	RETVAL = eio_nthreads ();
		1493	OUTPUT:
		1494	RETVAL
		1495
		1496	int
		1497	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1498	CODE:
		1499	RETVAL = posix_fadvise (fh, offset, length, advice);
		1500	OUTPUT:
		1501	RETVAL
		1502
		1503	ssize_t
		1504	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1505	CODE:
		1506	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	void
		1511	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1512	PPCODE:
		1513	sv_unmagic (scalar, MMAP_MAGIC);
		1514	{
		1515	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1516	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1517	if (addr == (void *)-1)
		1518	XSRETURN_NO;
		1519
		1520	sv_force_normal (scalar);
		1521
		1522	/* we store the length in mg_obj, as namlen is I32 :/ */
		1523	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1524	->mg_obj = (SV *)length;
		1525
		1526	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1527
		1528	if (!(prot & PROT_WRITE))
		1529	SvREADONLY_on (scalar);
		1530
		1531	if (SvLEN (scalar))
		1532	Safefree (SvPVX (scalar));
		1533
		1534	SvPVX (scalar) = (char *)addr;
		1535	SvCUR_set (scalar, length);
		1536	SvLEN_set (scalar, 0);
		1537	SvPOK_only (scalar);
		1538
		1539	XSRETURN_YES;
		1540	}
		1541
		1542	void
		1543	munmap (SV *scalar)
		1544	CODE:
		1545	sv_unmagic (scalar, MMAP_MAGIC);
		1546
		1547	int
		1548	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1549	ALIAS:
		1550	mprotect = 1
		1551	CODE:
		1552	{
		1553	STRLEN svlen;
		1554	void *addr = SvPVbyte (scalar, svlen);
		1555	size_t len = SvUV (length);
		1556
		1557	if (offset < 0)
		1558	offset += svlen;
		1559
		1560	if (offset < 0 || offset > svlen)
		1561	croak ("offset outside of scalar");
		1562
		1563	if (!SvOK (length) || len + offset > svlen)
		1564	len = svlen - offset;
		1565
		1566	addr = (void *)(((intptr_t)addr) + offset);
		1567	eio_page_align (&addr, &len);
		1568
		1569	switch (ix)
		1570	{
		1571	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1572	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1573	}
		1574	}
		1575	OUTPUT:
		1576	RETVAL
		1577
		1578	int
		1579	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1580	CODE:
		1581	{
		1582	STRLEN svlen;
		1583	void *addr = SvPVbyte (scalar, svlen);
		1584	size_t len = SvUV (length);
		1585
		1586	if (offset < 0)
		1587	offset += svlen;
		1588
		1589	if (offset < 0 || offset > svlen)
		1590	croak ("offset outside of scalar");
		1591
		1592	if (!SvOK (length) || len + offset > svlen)
		1593	len = svlen - offset;
		1594
		1595	addr = (void *)(((intptr_t)addr) + offset);
		1596	eio_page_align (&addr, &len);
		1597	#if _POSIX_MEMLOCK_RANGE
		1598	RETVAL = munlock (addr, len);
		1599	#else
		1600	RETVAL = ((errno = ENOSYS), -1);
		1601	#endif
		1602	}
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	int
		1607	munlockall ()
		1608	CODE:
		1609	#if _POSIX_MEMLOCK
		1610	munlockall ();
		1611	#else
		1612	RETVAL = -1;
		1613	errno = ENOSYS;
		1614	#endif
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618	void _on_next_submit (SV *cb)
		1619	CODE:
		1620	SvREFCNT_dec (on_next_submit);
		1621	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1622
		1623	PROTOTYPES: DISABLE
		1624
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1625	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1626
1214	void	1627	void
1215	cancel (aio_req_ornot req)	1628	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1629	CODE:
1218	req_cancel (req);	1630	eio_cancel (req);
		1631
		1632	void
		1633	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1634	PPCODE:
		1635	{
		1636	if (GIMME_V != G_VOID)
		1637	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1638
		1639	if (items > 1)
		1640	{
		1641	SV *cb_cv =get_cb (callback);
		1642
		1643	SvREFCNT_dec (req->callback);
		1644	req->callback = SvREFCNT_inc (cb_cv);
		1645	}
		1646	}
1219		1647
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1648	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1649
1222	void	1650	void
1223	add (aio_req grp, ...)	1651	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1652	PPCODE:
1226	{	1653	{
1227	int i;	1654	int i;
		1655
		1656	if (grp->int1 == 2)
		1657	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1228		1658
1229	for (i = 1; i < items; ++i )	1659	for (i = 1; i < items; ++i )
1230	{	1660	{
		1661	aio_req req;
		1662
1231	if (GIMME_V != G_VOID)	1663	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1664	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1665
1234	aio_req req = SvAIO_REQ (ST (i));	1666	req = SvAIO_REQ (ST (i));
1235		1667
1236	if (req)	1668	if (req)
1237	{	1669	eio_grp_add (grp, req);
1238	req->grp_prev = grp;
1239	req->grp_next = grp->grp_next;
1240	grp->grp_next->grp_prev = req;
1241	grp->grp_next = req;
1242
1243	req->grp = grp;
1244	}
1245	}	1670	}
1246	}	1671	}
1247		1672
		1673	void
		1674	cancel_subs (aio_req_ornot req)
		1675	CODE:
		1676	req_cancel_subs (req);
		1677
		1678	void
		1679	result (aio_req grp, ...)
		1680	CODE:
		1681	{
		1682	int i;
		1683	AV *av;
		1684
		1685	grp->errorno = errno;
		1686
		1687	av = newAV ();
		1688	av_extend (av, items - 1);
		1689
		1690	for (i = 1; i < items; ++i )
		1691	av_push (av, newSVsv (ST (i)));
		1692
		1693	SvREFCNT_dec (grp->sv1);
		1694	grp->sv1 = (SV *)av;
		1695	}
		1696
		1697	void
		1698	errno (aio_req grp, int errorno = errno)
		1699	CODE:
		1700	grp->errorno = errorno;
		1701
		1702	void
		1703	limit (aio_req grp, int limit)
		1704	CODE:
		1705	eio_grp_limit (grp, limit);
		1706
		1707	void
		1708	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1709	CODE:
		1710	{
		1711	SvREFCNT_dec (grp->sv2);
		1712	grp->sv2 = newSVsv (callback);
		1713	grp->feed = aio_grp_feed;
		1714
		1715	if (grp->int2 <= 0)
		1716	grp->int2 = 2;
		1717
		1718	eio_grp_limit (grp, grp->int2);
		1719	}
		1720

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