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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.50 by root, Sun Oct 22 21:13:47 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 *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	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_invoke (aio_req req);	296	static void req_cancel (aio_req req);
107	static void req_free (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	}
108		309
109	/* must be called at most once */	310	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	311	static SV *req_sv (aio_req req, HV *stash)
111	{	312	{
112	if (!req->self)	313	if (!req->self)
113	{	314	{
114	req->self = (SV *)newHV ();	315	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	316	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	317	}
117		318
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	319	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	320	}
120		321
121	static aio_req SvAIO_REQ (SV *sv)	322	static aio_req SvAIO_REQ (SV *sv)
122	{	323	{
123	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")))
124	croak ("object of class " AIO_REQ_KLASS " expected");	330	croak ("object of class IO::AIO::REQ expected");
125		331
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	332	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		333
128	return mg ? (aio_req)mg->mg_ptr : 0;	334	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	335	}
130		336
131	static void aio_grp_feed (aio_req grp)	337	static void aio_grp_feed (aio_req grp)
132	{	338	{
133	while (grp->length < grp->fd2)	339	if (grp->sv2 && SvOK (grp->sv2))
134	{	340	{
135	int old_len = grp->length;	341	dSP;
136		342
137	if (grp->fh2 && SvOK (grp->fh2))	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;
		352	}
		353	}
		354
		355	static void req_submit (eio_req *req)
		356	{
		357	eio_submit (req);
		358
		359	if (expect_false (on_next_submit))
		360	{
		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))
138	{	390	{
139	dSP;	391	sv_result = sv_result_cache; sv_result_cache = 0;
140		392	SvIV_set (sv_result, req->result);
141	ENTER;	393	SvIOK_only (sv_result);
142	SAVETMPS;
143	PUSHMARK (SP);
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
145	PUTBACK;
146	call_sv (grp->fh2, G_VOID | G_EVAL);
147	SPAGAIN;
148	FREETMPS;
149	LEAVE;
150	}	394	}
151		395	else
152	/* stop if no progress has been made */
153	if (old_len == grp->length)
154	{	396	{
155	SvREFCNT_dec (grp->fh2);	397	sv_result = newSViv (req->result);
156	grp->fh2 = 0;	398	SvREADONLY_on (sv_result);
157	break;
158	}	399	}
		400
		401	switch (req->type)
		402	{
		403	case EIO_READDIR:
		404	{
		405	SV *rv = &PL_sv_undef;
		406
		407	if (req->result >= 0)
		408	{
		409	int i;
		410	char *names = (char *)req->ptr2;
		411	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		412	AV *av = newAV ();
		413
		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);
		450	names += SvCUR (name) + 1;
		451	}
		452	}
		453
		454	rv = sv_2mortal (newRV_noinc ((SV *)av));
		455	}
		456
		457	PUSHs (rv);
		458
		459	if (req->int1 & EIO_READDIR_CUSTOM1)
		460	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		461	}
		462	break;
		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
		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;
		575	}
		576
		577	errno = req->errorno;
		578
		579	PUTBACK;
		580	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		581	SPAGAIN;
		582
		583	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		584	SvREFCNT_dec (sv_result);
		585	else
		586	sv_result_cache = sv_result;
		587
		588	FREETMPS;
		589	LEAVE;
		590
		591	PUTBACK;
159	}	592	}
160	}
161		593
162	static void aio_grp_dec (aio_req grp)	594	return !!SvTRUE (ERRSV);
163	{
164	--grp->length;
165
166	/* call feeder, if applicable */
167	aio_grp_feed (grp);
168
169	/* finish, if done */
170	if (!grp->length && grp->fd)
171	{
172	req_invoke (grp);
173	req_free (grp);
174	}
175	}	595	}
176		596
177	static void poll_wait ()
178	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;
182	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);
184
185	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}
187	}
188
189	static void req_invoke (aio_req req)
190	{
191	dSP;
192	int errorno = errno;
193
194	if (req->cancelled || !SvOK (req->callback))
195	return;
196
197	errno = req->errorno;
198
199	ENTER;
200	SAVETMPS;
201	PUSHMARK (SP);
202	EXTEND (SP, 1);
203
204	switch (req->type)
205	{
206	case REQ_READDIR:
207	{
208	SV *rv = &PL_sv_undef;
209
210	if (req->result >= 0)
211	{
212	char *buf = req->data2ptr;
213	AV *av = newAV ();
214
215	while (req->result)
216	{
217	SV *sv = newSVpv (buf, 0);
218
219	av_push (av, sv);
220	buf += SvCUR (sv) + 1;
221	req->result--;
222	}
223
224	rv = sv_2mortal (newRV_noinc ((SV *)av));
225	}
226
227	PUSHs (rv);
228	}
229	break;
230
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV *av = (AV *)req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID | G_EVAL);
273	SPAGAIN;
274
275	if (SvTRUE (ERRSV))
276	{
277	req_free (req);
278	croak (0);
279	}
280
281	FREETMPS;
282	LEAVE;
283
284	errno = errorno;
285	}
286
287	static void req_free (aio_req req)	597	static void req_destroy (aio_req req)
288	{	598	{
289	if (req->grp)
290	{
291	aio_req grp = req->grp;
292
293	/* unlink request */
294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297	if (grp->grp_first == req)
298	grp->grp_first = req->grp_next;
299
300	aio_grp_dec (grp);
301	}
302
303	if (req->self)	599	if (req->self)
304	{	600	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	601	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	602	SvREFCNT_dec (req->self);
307	}	603	}
308		604
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	605	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	606	SvREFCNT_dec (req->sv2);
312	SvREFCNT_dec (req->callback);	607	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317		608
318	Safefree (req);	609	Safefree (req);
319	}	610	}
320		611
321	static void req_cancel (aio_req req)	612	static void req_cancel_subs (aio_req grp)
322	{	613	{
323	req->cancelled = 1;	614	aio_req sub;
324		615
325	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 ())
326	{	635	{
327	aio_req sub;	636	int size;
328		637
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	638	X_LOCK (reslock);
330	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);
331	}	648	}
332	}	649	}
333		650
334	static int poll_cb ()	651	static int poll_cb (void)
335	{	652	{
336	dSP;
337	int count = 0;
338	int do_croak = 0;
339	aio_req req;
340
341	for (;;)	653	for (;;)
342	{	654	{
343	pthread_mutex_lock (&reslock);	655	int res = eio_poll ();
344	req = ress;
345		656
346	if (req)	657	if (res > 0)
347	{
348	ress = req->next;
349
350	if (!ress)
351	{
352	/* read any signals sent by the worker threads */
353	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)
355	;
356
357	rese = 0;
358	}
359	}
360
361	pthread_mutex_unlock (&reslock);
362
363	if (!req)
364	break;	658	croak (0);
365		659
366	--nreqs;	660	if (!max_outstanding || max_outstanding > eio_nreqs ())
		661	return res;
367		662
368	if (req->type == REQ_QUIT)	663	poll_wait ();
369	started--;
370	else if (req->type == REQ_GROUP && req->length)
371	{
372	req->fd = 1; /* mark request as delayed */
373	continue;
374	}
375	else
376	{
377	if (req->type == REQ_READ)
378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
381	SvREADONLY_off (req->data);
382
383	if (req->statdata)
384	{
385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386	PL_laststatval = req->result;
387	PL_statcache = *(req->statdata);
388	}
389
390	req_invoke (req);
391
392	count++;
393	}
394
395	req_free (req);
396	}	664	}
397
398	return count;
399	}	665	}
400		666
401	static void *aio_proc(void *arg);
402
403	static void start_thread (void)	667	static void atfork_child (void)
404	{	668	{
405	sigset_t fullsigset, oldsigset;	669	create_respipe ();
406	pthread_t tid;
407	pthread_attr_t attr;
408
409	pthread_attr_init (&attr);
410	pthread_attr_setstacksize (&attr, STACKSIZE);
411	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412
413	sigfillset (&fullsigset);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
417	started++;
418
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
420	}
421
422	static void req_send (aio_req req)
423	{
424	while (started < wanted && nreqs >= started)
425	start_thread ();
426
427	++nreqs;
428
429	pthread_mutex_lock (&reqlock);
430
431	req->next = 0;
432
433	if (reqe)
434	{
435	reqe->next = req;
436	reqe = req;
437	}
438	else
439	reqe = reqs = req;
440
441	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);
443
444	if (nreqs > max_outstanding)
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}
455
456	static void end_thread (void)
457	{
458	aio_req req;
459	Newz (0, req, 1, aio_cb);
460	req->type = REQ_QUIT;
461
462	req_send (req);
463	}
464
465	static void min_parallel (int nthreads)
466	{
467	if (wanted < nthreads)
468	wanted = nthreads;
469	}
470
471	static void max_parallel (int nthreads)
472	{
473	int cur = started;
474
475	if (wanted > nthreads)
476	wanted = nthreads;
477
478	while (cur > wanted)
479	{
480	end_thread ();
481	cur--;
482	}
483
484	while (started > wanted)
485	{
486	poll_wait ();
487	poll_cb ();
488	}
489	}
490
491	static void create_pipe ()
492	{
493	if (pipe (respipe))
494	croak ("unable to initialize result pipe");
495
496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
497	croak ("cannot set result pipe to nonblocking mode");
498
499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
500	croak ("cannot set result pipe to nonblocking mode");
501	}	670	}
502		671
503	/*****************************************************************************/	672	/*****************************************************************************/
504	/* work around various missing functions */
505		673
506	#if !HAVE_PREADWRITE	674	#if !_POSIX_MAPPED_FILES
507	# define pread aio_pread	675	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
508	# define pwrite aio_pwrite	676	# define munmap(addr,length) (errno = ENOSYS, -1)
509
510	/*
511	* make our pread/pwrite safe against themselves, but not against
512	* normal read/write by using a mutex. slows down execution a lot,
513	* but that's your problem, not mine.
514	*/
515	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
516
517	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
518	{
519	ssize_t res;
520	off_t ooffset;
521
522	pthread_mutex_lock (&preadwritelock);
523	ooffset = lseek (fd, 0, SEEK_CUR);
524	lseek (fd, offset, SEEK_SET);
525	res = read (fd, buf, count);
526	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);
528
529	return res;
530	}
531
532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
533	{
534	ssize_t res;
535	off_t ooffset;
536
537	pthread_mutex_lock (&preadwritelock);
538	ooffset = lseek (fd, 0, SEEK_CUR);
539	lseek (fd, offset, SEEK_SET);
540	res = write (fd, buf, count);
541	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);
543
544	return res;
545	}
546	#endif
547
548	#if !HAVE_FDATASYNC
549	# define fdatasync fsync
550	#endif
551
552	#if !HAVE_READAHEAD
553	# define readahead aio_readahead
554
555	static ssize_t readahead (int fd, off_t offset, size_t count)
556	{
557	char readahead_buf[4096];
558
559	while (count > 0)
560	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
562
563	pread (fd, readahead_buf, len, offset);
564	offset += len;
565	count -= len;
566	}
567
568	errno = 0;
569	}
570	#endif
571
572	#if !HAVE_READDIR_R
573	# define readdir_r aio_readdir_r
574
575	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
576
577	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
578	{
579	struct dirent *e;
580	int errorno;
581
582	pthread_mutex_lock (&readdirlock);
583
584	e = readdir (dirp);
585	errorno = errno;
586
587	if (e)
588	{
589	*res = ent;
590	strcpy (ent->d_name, e->d_name);
591	}
592	else
593	*res = 0;
594
595	pthread_mutex_unlock (&readdirlock);
596
597	errno = errorno;
598	return e ? 0 : -1;
599	}
600	#endif
601
602	/* sendfile always needs emulation */
603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
604	{
605	ssize_t res;
606
607	if (!count)
608	return 0;
609
610	#if HAVE_SENDFILE
611	# if __linux
612	res = sendfile (ofd, ifd, &offset, count);
613
614	# elif __freebsd
615	/*
616	* Of course, the freebsd sendfile is a dire hack with no thoughts
617	* wasted on making it similar to other I/O functions.
618	*/
619	{
620	off_t sbytes;
621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
622
623	if (res < 0 && sbytes)
624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
625	res = sbytes;
626	}
627
628	# elif __hpux
629	res = sendfile (ofd, ifd, offset, count, 0, 0);
630
631	# elif __solaris
632	{
633	struct sendfilevec vec;
634	size_t sbytes;
635
636	vec.sfv_fd = ifd;
637	vec.sfv_flag = 0;
638	vec.sfv_off = offset;
639	vec.sfv_len = count;
640
641	res = sendfilev (ofd, &vec, 1, &sbytes);
642
643	if (res < 0 && sbytes)
644	res = sbytes;
645	}
646
647	# endif	677	#endif
648	#else
649	res = -1;
650	errno = ENOSYS;
651	#endif
652		678
653	if (res < 0	679	#if !_POSIX_MEMORY_PROTECTION
654	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	680	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
655	#if __solaris	681	# define PROT_NONE 0
656	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	682	# define PROT_WRITE 0
		683	# define MAP_PRIVATE 0
		684	# define MAP_SHARED 0
		685	# define MAP_FIXED 0
657	#endif	686	#endif
658	)
659	)
660	{
661	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];
663	res = 0;
664		687
665	while (count)	688	#define MMAP_MAGIC PERL_MAGIC_ext
666	{
667	ssize_t cnt;
668
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670		689
671	if (cnt <= 0)	690	static int
672	{	691	mmap_free (pTHX_ SV *sv, MAGIC *mg)
673	if (cnt && !res) res = -1;
674	break;
675	}
676
677	cnt = write (ofd, buf, cnt);
678
679	if (cnt <= 0)
680	{
681	if (cnt && !res) res = -1;
682	break;
683	}
684
685	offset += cnt;
686	res += cnt;
687	count -= cnt;
688	}
689	}
690
691	return res;
692	}
693
694	/* read a full directory */
695	static int scandir_ (const char *path, void **namesp)
696	{	692	{
697	DIR *dirp = opendir (path);	693	int old_errno = errno;
698	union	694	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
699	{
700	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;
703	struct dirent *entp;
704	char *name, *names;
705	int memlen = 4096;
706	int memofs = 0;
707	int res = 0;
708	int errorno;
709
710	if (!dirp)
711	return -1;
712
713	names = malloc (memlen);
714
715	for (;;)
716	{
717	errno = 0, readdir_r (dirp, &u.d, &entp);
718
719	if (!entp)
720	break;
721
722	name = entp->d_name;
723
724	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725	{
726	int len = strlen (name) + 1;
727
728	res++;
729
730	while (memofs + len > memlen)
731	{
732	memlen *= 2;
733	names = realloc (names, memlen);
734	if (!names)
735	break;
736	}
737
738	memcpy (names + memofs, name, len);
739	memofs += len;
740	}
741	}
742
743	errorno = errno;	695	errno = old_errno;
744	closedir (dirp);
745		696
746	if (errorno)	697	mg->mg_obj = 0; /* just in case */
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752		698
753	*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
754	return res;	708	return 0;
755	}	709	}
		710
		711	static MGVTBL mmap_vtbl = {
		712	0, 0, 0, 0, mmap_free
		713	};
756		714
757	/*****************************************************************************/	715	/*****************************************************************************/
758		716
759	static void *aio_proc (void *thr_arg)	717	static SV *
		718	get_cb (SV *cb_sv)
760	{	719	{
761	aio_req req;	720	SvGETMAGIC (cb_sv);
762	int type;	721	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
763
764	do
765	{
766	pthread_mutex_lock (&reqlock);
767
768	for (;;)
769	{
770	req = reqs;
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777
778	if (req)
779	break;
780
781	pthread_cond_wait (&reqwait, &reqlock);
782	}
783
784	pthread_mutex_unlock (&reqlock);
785
786	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */
790	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
796
797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800
801	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
802	case REQ_CLOSE: req->result = close (req->fd); break;
803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812
813	case REQ_SLEEP:
814	{
815	struct timeval tv;
816
817	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;
819
820	req->result = select (0, 0, 0, 0, &tv);
821	}
822
823	case REQ_QUIT:
824	break;
825
826	default:
827	req->result = ENOSYS;
828	break;
829	}
830
831	req->errorno = errno;
832
833	pthread_mutex_lock (&reslock);
834
835	req->next = 0;
836
837	if (rese)
838	{
839	rese->next = req;
840	rese = req;
841	}
842	else
843	{
844	rese = ress = req;
845
846	/* write a dummy byte to the pipe so fh becomes ready */
847	write (respipe [1], &respipe, 1);
848	}
849
850	pthread_mutex_unlock (&reslock);
851	}
852	while (type != REQ_QUIT);
853
854	return 0;
855	}
856
857	/*****************************************************************************/
858
859	static void atfork_prepare (void)
860	{
861	pthread_mutex_lock (&reqlock);
862	pthread_mutex_lock (&reslock);
863	#if !HAVE_PREADWRITE
864	pthread_mutex_lock (&preadwritelock);
865	#endif
866	#if !HAVE_READDIR_R
867	pthread_mutex_lock (&readdirlock);
868	#endif
869	}
870
871	static void atfork_parent (void)
872	{
873	#if !HAVE_READDIR_R
874	pthread_mutex_unlock (&readdirlock);
875	#endif
876	#if !HAVE_PREADWRITE
877	pthread_mutex_unlock (&preadwritelock);
878	#endif
879	pthread_mutex_unlock (&reslock);
880	pthread_mutex_unlock (&reqlock);
881	}
882
883	static void atfork_child (void)
884	{
885	aio_req prv;
886
887	started = 0;
888
889	while (reqs)
890	{
891	prv = reqs;
892	reqs = prv->next;
893	req_free (prv);
894	}
895
896	reqs = reqe = 0;
897
898	while (ress)
899	{
900	prv = ress;
901	ress = prv->next;
902	req_free (prv);
903	}
904
905	ress = rese = 0;
906
907	close (respipe [0]);
908	close (respipe [1]);
909	create_pipe ();
910
911	atfork_parent ();
912	}	722	}
913		723
914	#define dREQ \	724	#define dREQ \
		725	SV *cb_cv; \
915	aio_req req; \	726	aio_req req; \
		727	int req_pri = next_pri; \
		728	next_pri = EIO_PRI_DEFAULT; \
916	\	729	\
917	if (SvOK (callback) && !SvROK (callback)) \	730	cb_cv = get_cb (callback); \
918	croak ("callback must be undef or of reference type"); \
919	\	731	\
920	Newz (0, req, 1, aio_cb); \	732	Newz (0, req, 1, eio_req); \
921	if (!req) \	733	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	734	croak ("out of memory during eio_req allocation"); \
923	\	735	\
924	req->callback = newSVsv (callback)	736	req->callback = SvREFCNT_inc (cb_cv); \
		737	req->pri = req_pri
925		738
926	#define REQ_SEND \	739	#define REQ_SEND \
		740	PUTBACK; \
927	req_send (req); \	741	req_submit (req); \
		742	SPAGAIN; \
928	\	743	\
929	if (GIMME_V != G_VOID) \	744	if (GIMME_V != G_VOID) \
930	XPUSHs (req_sv (req, AIO_REQ_KLASS));	745	XPUSHs (req_sv (req, aio_req_stash));
931		746
932	MODULE = IO::AIO PACKAGE = IO::AIO	747	MODULE = IO::AIO PACKAGE = IO::AIO
933		748
934	PROTOTYPES: ENABLE	749	PROTOTYPES: ENABLE
935		750
936	BOOT:	751	BOOT:
937	{	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
938	HV *stash = gv_stashpv ("IO::AIO", 1);	852	aio_stash = gv_stashpv ("IO::AIO" , 1);
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	853	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	854	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
941	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
942		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
943	create_pipe ();	861	create_respipe ();
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945	}
946		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
947	void	870	void
948	min_parallel (nthreads)	871	max_poll_reqs (unsigned int nreqs)
949	int nthreads
950	PROTOTYPE: $	872	PROTOTYPE: $
		873	CODE:
		874	eio_set_max_poll_reqs (nreqs);
951		875
952	void	876	void
953	max_parallel (nthreads)	877	max_poll_time (double nseconds)
954	int nthreads
955	PROTOTYPE: $	878	PROTOTYPE: $
956
957	int
958	max_outstanding (nreqs)
959	int nreqs
960	PROTOTYPE: $
961	CODE:	879	CODE:
962	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:
963	max_outstanding = nreqs;	910	max_outstanding = maxreqs;
964		911
965	void	912	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	913	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
967	SV * pathname
968	int flags
969	int mode
970	SV * callback
971	PROTOTYPE: $$$;$
972	PPCODE:	914	PPCODE:
973	{	915	{
974	dREQ;	916	dREQ;
975		917
976	req->type = REQ_OPEN;	918	req->type = EIO_OPEN;
977	req->data = newSVsv (pathname);	919	req->sv1 = newSVsv (pathname);
978	req->dataptr = SvPVbyte_nolen (req->data);	920	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	req->fd = flags;	921	req->int1 = flags;
980	req->mode = mode;	922	req->int2 = mode;
981		923
982	REQ_SEND;	924	REQ_SEND;
983	}	925	}
984		926
985	void	927	void
986	aio_close (fh,callback=&PL_sv_undef)	928	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
987	SV * fh
988	SV * callback
989	PROTOTYPE: $;$
990	ALIAS:	929	ALIAS:
991	aio_close = REQ_CLOSE
992	aio_fsync = REQ_FSYNC	930	aio_fsync = EIO_FSYNC
993	aio_fdatasync = REQ_FDATASYNC	931	aio_fdatasync = EIO_FDATASYNC
994	PPCODE:	932	PPCODE:
995	{	933	{
		934	int fd = s_fileno_croak (fh, 0);
996	dREQ;	935	dREQ;
997		936
998	req->type = ix;	937	req->type = ix;
999	req->fh = newSVsv (fh);	938	req->sv1 = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	939	req->int1 = fd;
1001		940
1002	REQ_SEND (req);	941	REQ_SEND (req);
1003	}	942	}
1004		943
1005	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
1006	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)
1007	SV * fh
1008	UV offset
1009	UV length
1010	SV * data
1011	UV dataoffset
1012	SV * callback
1013	ALIAS:	991	ALIAS:
1014	aio_read = REQ_READ	992	aio_read = EIO_READ
1015	aio_write = REQ_WRITE	993	aio_write = EIO_WRITE
1016	PROTOTYPE: $$$$$;$
1017	PPCODE:	994	PPCODE:
1018	{	995	{
1019	aio_req req;
1020	STRLEN svlen;	996	STRLEN svlen;
		997	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1021	char *svptr = SvPVbyte (data, svlen);	998	char *svptr = SvPVbyte (data, svlen);
1022		999	UV len = SvUV (length);
1023	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);
1025		1000
1026	if (dataoffset < 0)	1001	if (dataoffset < 0)
1027	dataoffset += svlen;	1002	dataoffset += svlen;
1028		1003
1029	if (dataoffset < 0 || dataoffset > svlen)	1004	if (dataoffset < 0 || dataoffset > svlen)
1030	croak ("data offset outside of string");	1005	croak ("dataoffset outside of data scalar");
1031		1006
1032	if (ix == REQ_WRITE)	1007	if (ix == EIO_WRITE)
1033	{	1008	{
1034	/* write: check length and adjust. */	1009	/* write: check length and adjust. */
1035	if (length < 0 || length + dataoffset > svlen)	1010	if (!SvOK (length) || len + dataoffset > svlen)
1036	length = svlen - dataoffset;	1011	len = svlen - dataoffset;
1037	}	1012	}
1038	else	1013	else
1039	{	1014	{
1040	/* read: grow scalar as necessary */	1015	/* read: check type and grow scalar as necessary */
		1016	SvUPGRADE (data, SVt_PV);
1041	svptr = SvGROW (data, length + dataoffset);	1017	svptr = SvGROW (data, len + dataoffset + 1);
1042	}	1018	}
1043
1044	if (length < 0)
1045	croak ("length must not be negative");
1046		1019
1047	{	1020	{
1048	dREQ;	1021	dREQ;
1049		1022
1050	req->type = ix;	1023	req->type = ix;
1051	req->fh = newSVsv (fh);	1024	req->sv1 = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1025	req->int1 = fd;
1053	: IoOFP (sv_2io (fh)));	1026	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054	req->offset = offset;	1027	req->size = len;
1055	req->length = length;
1056	req->data = SvREFCNT_inc (data);	1028	req->sv2 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	1029	req->ptr2 = (char *)svptr + dataoffset;
		1030	req->stroffset = dataoffset;
1058		1031
1059	if (!SvREADONLY (data))	1032	if (!SvREADONLY (data))
1060	{	1033	{
1061	SvREADONLY_on (data);	1034	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	1035	req->flags |= FLAG_SV2_RO_OFF;
1063	}	1036	}
1064		1037
1065	REQ_SEND;	1038	REQ_SEND;
1066	}	1039	}
1067	}	1040	}
1068		1041
1069	void	1042	void
1070	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1043	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1071	SV * out_fh
1072	SV * in_fh
1073	UV in_offset
1074	UV length
1075	SV * callback
1076	PROTOTYPE: $$$$;$
1077	PPCODE:	1044	PPCODE:
1078	{	1045	{
		1046	SV *data;
		1047	dREQ;
		1048
		1049	req->type = EIO_READLINK;
		1050	req->sv1 = newSVsv (path);
		1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1052
		1053	REQ_SEND;
		1054	}
		1055
		1056	void
		1057	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1058	PPCODE:
		1059	{
		1060	int ifd = s_fileno_croak (in_fh , 0);
		1061	int ofd = s_fileno_croak (out_fh, 1);
1079	dREQ;	1062	dREQ;
1080		1063
1081	req->type = REQ_SENDFILE;	1064	req->type = EIO_SENDFILE;
1082	req->fh = newSVsv (out_fh);	1065	req->sv1 = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1066	req->int1 = ofd;
1084	req->fh2 = newSVsv (in_fh);	1067	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1068	req->int2 = ifd;
1086	req->offset = in_offset;	1069	req->offs = in_offset;
1087	req->length = length;	1070	req->size = length;
1088		1071
1089	REQ_SEND;	1072	REQ_SEND;
1090	}	1073	}
1091		1074
1092	void	1075	void
1093	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1076	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1094	SV * fh
1095	UV offset
1096	IV length
1097	SV * callback
1098	PROTOTYPE: $$$;$
1099	PPCODE:	1077	PPCODE:
1100	{	1078	{
		1079	int fd = s_fileno_croak (fh, 0);
1101	dREQ;	1080	dREQ;
1102		1081
1103	req->type = REQ_READAHEAD;	1082	req->type = EIO_READAHEAD;
1104	req->fh = newSVsv (fh);	1083	req->sv1 = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1084	req->int1 = fd;
1106	req->offset = offset;	1085	req->offs = offset;
1107	req->length = length;	1086	req->size = length;
1108		1087
1109	REQ_SEND;	1088	REQ_SEND;
1110	}	1089	}
1111		1090
1112	void	1091	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	1092	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1114	SV * fh_or_path
1115	SV * callback
1116	ALIAS:	1093	ALIAS:
1117	aio_stat = REQ_STAT	1094	aio_stat = EIO_STAT
1118	aio_lstat = REQ_LSTAT	1095	aio_lstat = EIO_LSTAT
		1096	aio_statvfs = EIO_STATVFS
1119	PPCODE:	1097	PPCODE:
1120	{	1098	{
1121	dREQ;	1099	dREQ;
1122		1100
1123	New (0, req->statdata, 1, Stat_t);	1101	req->sv1 = newSVsv (fh_or_path);
1124	if (!req->statdata)
1125	{
1126	req_free (req);
1127	croak ("out of memory during aio_req->statdata allocation");
1128	}
1129		1102
1130	if (SvPOK (fh_or_path))	1103	if (SvPOK (req->sv1))
1131	{	1104	{
1132	req->type = ix;	1105	req->type = ix;
1133	req->data = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);	1106	req->ptr1 = SvPVbyte_nolen (req->sv1);
1135	}	1107	}
1136	else	1108	else
1137	{	1109	{
1138	req->type = REQ_FSTAT;	1110	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1139	req->fh = newSVsv (fh_or_path);
1140	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1111	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}	1112	}
1142		1113
1143	REQ_SEND;	1114	REQ_SEND;
1144	}	1115	}
1145		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
1146	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
1147	aio_unlink (pathname,callback=&PL_sv_undef)	1248	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1148	SV * pathname
1149	SV * callback
1150	ALIAS:	1249	ALIAS:
1151	aio_unlink = REQ_UNLINK	1250	aio_unlink = EIO_UNLINK
1152	aio_rmdir = REQ_RMDIR	1251	aio_rmdir = EIO_RMDIR
1153	aio_readdir = REQ_READDIR	1252	aio_readdir = EIO_READDIR
1154	PPCODE:	1253	PPCODE:
1155	{	1254	{
1156	dREQ;	1255	dREQ;
1157		1256
1158	req->type = ix;	1257	req->type = ix;
1159	req->data = newSVsv (pathname);	1258	req->sv1 = newSVsv (pathname);
1160	req->dataptr = SvPVbyte_nolen (req->data);	1259	req->ptr1 = SvPVbyte_nolen (req->sv1);
1161		1260
1162	REQ_SEND;	1261	REQ_SEND;
1163	}	1262	}
1164		1263
1165	void	1264	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1265	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1167	SV * oldpath
1168	SV * newpath
1169	SV * callback
1170	ALIAS:	1266	ALIAS:
1171	aio_link = REQ_LINK	1267	aio_link = EIO_LINK
1172	aio_symlink = REQ_SYMLINK	1268	aio_symlink = EIO_SYMLINK
1173	aio_rename = REQ_RENAME	1269	aio_rename = EIO_RENAME
1174	PPCODE:	1270	PPCODE:
1175	{	1271	{
1176	dREQ;	1272	dREQ;
1177		1273
1178	req->type = ix;	1274	req->type = ix;
1179	req->fh = newSVsv (oldpath);	1275	req->sv1 = newSVsv (oldpath);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	1276	req->ptr1 = SvPVbyte_nolen (req->sv1);
1181	req->data = newSVsv (newpath);	1277	req->sv2 = newSVsv (newpath);
1182	req->dataptr = SvPVbyte_nolen (req->data);	1278	req->ptr2 = SvPVbyte_nolen (req->sv2);
1183		1279
1184	REQ_SEND;	1280	REQ_SEND;
1185	}	1281	}
1186		1282
1187	void	1283	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	1284	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1189	double delay
1190	SV * callback
1191	PPCODE:	1285	PPCODE:
1192	{	1286	{
1193	dREQ;	1287	dREQ;
1194		1288
1195	req->type = REQ_SLEEP;	1289	req->type = EIO_MKNOD;
1196	req->fd = delay < 0. ? 0 : delay;	1290	req->sv1 = newSVsv (pathname);
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1291	req->ptr1 = SvPVbyte_nolen (req->sv1);
1198		1292	req->int2 = (mode_t)mode;
		1293	req->offs = dev;
		1294
1199	REQ_SEND;	1295	REQ_SEND;
1200	}	1296	}
1201		1297
1202	void	1298	void
1203	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)
1204	SV * callback	1300	ALIAS:
1205	PROTOTYPE: ;$	1301	aio_mtouch = EIO_MTOUCH
		1302	aio_msync = EIO_MSYNC
1206	PPCODE:	1303	PPCODE:
1207	{	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	{
1208	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
1209	req->type = REQ_GROUP;	1390	req->type = EIO_GROUP;
		1391
1210	req_send (req);	1392	req_submit (req);
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1393	XPUSHs (req_sv (req, aio_grp_stash));
1212	}	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;
1213		1430
1214	void	1431	void
1215	flush ()	1432	flush ()
1216	PROTOTYPE:
1217	CODE:	1433	CODE:
1218	while (nreqs)	1434	while (eio_nreqs ())
1219	{	1435	{
1220	poll_wait ();	1436	poll_wait ();
1221	poll_cb ();	1437	poll_cb ();
1222	}	1438	}
1223		1439
1224	void
1225	poll()
1226	PROTOTYPE:
1227	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();
1231	poll_cb ();
1232	}
1233
1234	int	1440	int
1235	poll_fileno()	1441	poll ()
1236	PROTOTYPE:
1237	CODE:	1442	CODE:
1238	RETVAL = respipe [0];	1443	poll_wait ();
1239	OUTPUT:
1240	RETVAL
1241
1242	int
1243	poll_cb(...)
1244	PROTOTYPE:
1245	CODE:
1246	RETVAL = poll_cb ();	1444	RETVAL = poll_cb ();
1247	OUTPUT:	1445	OUTPUT:
1248	RETVAL	1446	RETVAL
1249		1447
1250	void
1251	poll_wait()
1252	PROTOTYPE:
1253	CODE:
1254	if (nreqs)
1255	poll_wait ();
1256
1257	int	1448	int
1258	nreqs()	1449	poll_fileno ()
1259	PROTOTYPE:
1260	CODE:	1450	CODE:
1261	RETVAL = nreqs;	1451	RETVAL = s_epipe_fd (&respipe);
1262	OUTPUT:	1452	OUTPUT:
1263	RETVAL	1453	RETVAL
1264		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
1265	PROTOTYPES: DISABLE	1623	PROTOTYPES: DISABLE
1266		1624
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1625	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1626
1269	void	1627	void
1270	cancel (aio_req_ornot req)	1628	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1629	CODE:
1273	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	}
1274		1647
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1648	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1649
1277	void	1650	void
1278	add (aio_req grp, ...)	1651	add (aio_req grp, ...)
1279	PPCODE:	1652	PPCODE:
1280	{	1653	{
1281	int i;	1654	int i;
1282		1655
1283	if (grp->fd == 2)	1656	if (grp->int1 == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1657	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1658
1286	for (i = 1; i < items; ++i )	1659	for (i = 1; i < items; ++i )
1287	{	1660	{
		1661	aio_req req;
		1662
1288	if (GIMME_V != G_VOID)	1663	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1664	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1665
1291	aio_req req = SvAIO_REQ (ST (i));	1666	req = SvAIO_REQ (ST (i));
1292		1667
1293	if (req)	1668	if (req)
1294	{	1669	eio_grp_add (grp, req);
1295	++grp->length;
1296	req->grp = grp;
1297
1298	req->grp_prev = 0;
1299	req->grp_next = grp->grp_first;
1300
1301	if (grp->grp_first)
1302	grp->grp_first->grp_prev = req;
1303
1304	grp->grp_first = req;
1305	}
1306	}	1670	}
1307	}	1671	}
1308		1672
1309	void	1673	void
1310	lock (aio_req grp)	1674	cancel_subs (aio_req_ornot req)
1311	CODE:	1675	CODE:
1312	++grp->length;	1676	req_cancel_subs (req);
1313		1677
1314	void	1678	void
1315	unlock (aio_req grp)	1679	result (aio_req grp, ...)
1316	CODE:	1680	CODE:
1317	aio_grp_dec (grp);	1681	{
		1682	int i;
		1683	AV *av;
1318		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
1319	void	1697	void
		1698	errno (aio_req grp, int errorno = errno)
		1699	CODE:
		1700	grp->errorno = errorno;
		1701
		1702	void
1320	feeder_limit (aio_req grp, int limit)	1703	limit (aio_req grp, int limit)
1321	CODE:	1704	CODE:
1322	grp->fd2 = limit;	1705	eio_grp_limit (grp, limit);
1323	aio_grp_feed (grp);
1324		1706
1325	void	1707	void
1326	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1708	feed (aio_req grp, SV *callback=&PL_sv_undef)
1327	CODE:	1709	CODE:
1328	{	1710	{
1329	SvREFCNT_dec (grp->fh2);	1711	SvREFCNT_dec (grp->sv2);
1330	grp->fh2 = newSVsv (callback);	1712	grp->sv2 = newSVsv (callback);
		1713	grp->feed = aio_grp_feed;
1331		1714
1332	if (grp->fd2 <= 0)	1715	if (grp->int2 <= 0)
1333	grp->fd2 = 2;	1716	grp->int2 = 2;
1334		1717
1335	aio_grp_feed (grp);	1718	eio_grp_limit (grp, grp->int2);
1336	}	1719	}
1337		1720

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