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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.169 by root, Wed Aug 4 16:06:54 2010 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_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/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		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	#ifndef POSIX_MADV_NORMAL
		146	# define POSIX_MADV_NORMAL 0
		147	# define NO_MADVISE 1
		148	#endif
		149	#ifndef POSIX_MADV_SEQUENTIAL
		150	# define POSIX_MADV_SEQUENTIAL 0
		151	#endif
		152	#ifndef POSIX_MADV_RANDOM
		153	# define POSIX_MADV_RANDOM 0
		154	#endif
		155	#ifndef POSIX_MADV_WILLNEED
		156	# define POSIX_MADV_WILLNEED 0
		157	#endif
		158	#ifndef POSIX_MADV_DONTNEED
		159	# define POSIX_MADV_DONTNEED 0
		160	#endif
		161
		162	#ifndef ST_NODEV
		163	# define ST_NODEV 0
		164	#endif
		165	#ifndef ST_NOEXEC
		166	# define ST_NOEXEC 0
		167	#endif
		168	#ifndef ST_SYNCHRONOUS
		169	# define ST_SYNCHRONOUS 0
		170	#endif
		171	#ifndef ST_MANDLOCK
		172	# define ST_MANDLOCK 0
		173	#endif
		174	#ifndef ST_WRITE
		175	# define ST_WRITE 0
		176	#endif
		177	#ifndef ST_APPEND
		178	# define ST_APPEND 0
		179	#endif
		180	#ifndef ST_IMMUTABLE
		181	# define ST_IMMUTABLE 0
		182	#endif
		183	#ifndef ST_NOATIME
		184	# define ST_NOATIME 0
		185	#endif
		186	#ifndef ST_NODIRATIME
		187	# define ST_NODIRATIME 0
		188	#endif
		189	#ifndef ST_RELATIME
		190	# define ST_RELATIME 0
		191	#endif
		192
		193	#ifndef MCL_CURRENT
		194	# define MCL_CURRENT 0
		195	#endif
		196	#ifndef MCL_FUTURE
		197	# define MCL_FUTURE 0
		198	#endif
		199
		200	#ifndef MAP_ANONYMOUS
		201	# ifdef MAP_ANON
		202	# define MAP_ANONYMOUS MAP_ANON
34	# else	203	# else
35	# error sendfile support requested but not available	204	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	205	# endif
37	#endif	206	#endif
38		207	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	208	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	209	#endif
43		210	#ifndef MAP_LOCKED
44	#if __ia64	211	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	212	#endif
		213	#ifndef MAP_NORESERVE
		214	# define MAP_NORESERVE 0
		215	#endif
		216	#ifndef MAP_POPULATE
		217	# define MAP_POPULATE 0
		218	#endif
		219	#ifndef MAP_NONBLOCK
		220	# define MAP_NONBLOCK 0
		221	#endif
		222
		223	#ifndef PAGESIZE
		224	# define PAGESIZE sysconf (_SC_PAGESIZE)
		225	#endif
		226
		227	static int req_invoke (eio_req *req);
		228	#define EIO_FINISH(req) req_invoke (req)
		229	static void req_destroy (eio_req *grp);
		230	#define EIO_DESTROY(req) req_destroy (req)
49		231
50	enum {	232	enum {
51	REQ_QUIT,	233	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	};	234	};
63		235
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	236	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		237
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;	238	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	239	typedef eio_req *aio_req_ornot;
93	typedef aio_cb *aio_group;
94		240
95	static int started, wanted;	241	static SV *on_next_submit;
96	static volatile int nreqs;	242	static int next_pri = EIO_PRI_DEFAULT;
97	static int max_outstanding = 1<<30;	243	static int max_outstanding;
98	static int respipe [2];
99		244
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	245	static s_epipe respipe;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		246
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	247	static void req_destroy (aio_req req);
105	static volatile aio_req ress, rese; /* queue start, queue end */
106
107	static void req_free (aio_req req);	248	static void req_cancel (aio_req req);
		249
		250	static void want_poll (void)
		251	{
		252	/* write a dummy byte to the pipe so fh becomes ready */
		253	s_epipe_signal (&respipe);
		254	}
		255
		256	static void done_poll (void)
		257	{
		258	/* read any signals sent by the worker threads */
		259	s_epipe_drain (&respipe);
		260	}
108		261
109	/* must be called at most once */	262	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	263	static SV *req_sv (aio_req req, HV *stash)
111	{	264	{
		265	if (!req->self)
		266	{
112	req->self = (SV *)newHV ();	267	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	268	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		269	}
114		270
115	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	271	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
116	}	272	}
117		273
118	static aio_req SvAIO_REQ (SV *sv)	274	static aio_req SvAIO_REQ (SV *sv)
119	{	275	{
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	276	MAGIC *mg;
		277
		278	if (!SvROK (sv)
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
121	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
122		283
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		285
125	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	287	}
127		288
128	static void poll_wait ()	289	static void aio_grp_feed (aio_req grp)
129	{	290	{
130	if (nreqs && !ress)	291	if (grp->sv2 && SvOK (grp->sv2))
131	{	292	{
132	fd_set rfd;	293	dSP;
133	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);
135		294
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	295	ENTER;
		296	SAVETMPS;
		297	PUSHMARK (SP);
		298	XPUSHs (req_sv (grp, aio_grp_stash));
		299	PUTBACK;
		300	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		301	SPAGAIN;
		302	FREETMPS;
		303	LEAVE;
137	}	304	}
138	}	305	}
139		306
140	static void req_invoke (aio_req req)	307	static void req_submit (eio_req *req)
141	{	308	{
142	dSP;	309	eio_submit (req);
143	int errorno = errno;
144		310
145	if (req->cancelled || !SvOK (req->callback))	311	if (expect_false (on_next_submit))
146	return;
147
148	errno = req->errorno;
149
150	ENTER;
151	PUSHMARK (SP);
152
153	switch (req->type)
154	{	312	{
155	case REQ_READDIR:	313	dSP;
		314	SV *cb = sv_2mortal (on_next_submit);
		315
		316	on_next_submit = 0;
		317
		318	PUSHMARK (SP);
		319	PUTBACK;
		320	call_sv (cb, G_DISCARD | G_EVAL);
		321	}
		322	}
		323
		324	static int req_invoke (eio_req *req)
		325	{
		326	if (req->flags & FLAG_SV2_RO_OFF)
		327	SvREADONLY_off (req->sv2);
		328
		329	if (!EIO_CANCELLED (req) && req->callback)
		330	{
		331	dSP;
		332	static SV *sv_result_cache; /* caches the result integer SV */
		333	SV *sv_result;
		334
		335	ENTER;
		336	SAVETMPS;
		337	PUSHMARK (SP);
		338	EXTEND (SP, 1);
		339
		340	/* do not recreate the result IV from scratch each time */
		341	if (expect_true (sv_result_cache))
156	{	342	{
157	SV *rv = &PL_sv_undef;	343	sv_result = sv_result_cache; sv_result_cache = 0;
		344	SvIV_set (sv_result, req->result);
		345	}
		346	else
		347	{
		348	sv_result = newSViv (req->result);
		349	SvREADONLY_on (sv_result);
		350	}
158		351
159	if (req->result >= 0)	352	switch (req->type)
		353	{
		354	case EIO_READDIR:
160	{	355	{
161	char *buf = req->data2ptr;	356	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		357
164	while (req->result)	358	if (req->result >= 0)
165	{	359	{
		360	int i;
		361	char *names = (char *)req->ptr2;
		362	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	363	AV *av = newAV ();
167		364
168	av_push (av, sv);	365	av_extend (av, req->result - 1);
		366
		367	for (i = 0; i < req->result; ++i)
		368	{
		369	if (req->int1 & EIO_READDIR_DENTS)
		370	{
		371	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		372
		373	if (req->int1 & EIO_READDIR_CUSTOM2)
		374	{
		375	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		376	AV *avent = newAV ();
		377
		378	av_extend (avent, 2);
		379
		380	if (!sv_type [ent->type])
		381	{
		382	sv_type [ent->type] = newSViv (ent->type);
		383	SvREADONLY_on (sv_type [ent->type]);
		384	}
		385
		386	av_store (avent, 0, namesv);
		387	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		388	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		389
		390	av_store (av, i, newRV_noinc ((SV *)avent));
		391	}
		392	else
		393	av_store (av, i, namesv);
		394
		395	++ent;
		396	}
		397	else
		398	{
		399	SV *name = newSVpv (names, 0);
		400	av_store (av, i, name);
169	buf += SvCUR (sv) + 1;	401	names += SvCUR (name) + 1;
170	req->result--;	402	}
		403	}
		404
		405	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	406	}
172		407
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	408	PUSHs (rv);
		409
		410	if (req->int1 & EIO_READDIR_CUSTOM1)
		411	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
174	}	412	}
		413	break;
175		414
		415	case EIO_OPEN:
		416	{
		417	/* convert fd to fh */
		418	SV *fh = &PL_sv_undef;
		419
		420	if (req->result >= 0)
		421	{
		422	GV *gv = (GV *)sv_newmortal ();
		423	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		424	char sym [64];
		425	int symlen;
		426
		427	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		428	gv_init (gv, aio_stash, sym, symlen, 0);
		429
		430	symlen = snprintf (
		431	sym,
		432	sizeof (sym),
		433	"%s&=%d",
		434	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		435	(int)req->result
		436	);
		437
		438	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		439	fh = (SV *)gv;
		440	}
		441
		442	PUSHs (fh);
		443	}
		444	break;
		445
		446	case EIO_STATVFS:
		447	case EIO_FSTATVFS:
		448	{
		449	SV *rv = &PL_sv_undef;
		450
		451	if (req->result >= 0)
		452	{
		453	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		454	HV *hv = newHV ();
		455
		456	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		457
		458	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		459	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		460	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		461	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		462	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		463	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		464	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		465	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		466	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		467	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		468	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		469	}
		470
176	XPUSHs (rv);	471	PUSHs (rv);
		472	}
		473
		474	break;
		475
		476	case EIO_GROUP:
		477	req->int1 = 2; /* mark group as finished */
		478
		479	if (req->sv1)
		480	{
		481	int i;
		482	AV *av = (AV *)req->sv1;
		483
		484	EXTEND (SP, AvFILL (av) + 1);
		485	for (i = 0; i <= AvFILL (av); ++i)
		486	PUSHs (*av_fetch (av, i, 0));
		487	}
		488	break;
		489
		490	case EIO_NOP:
		491	case EIO_BUSY:
		492	break;
		493
		494	case EIO_READLINK:
		495	if (req->result > 0)
		496	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		497	break;
		498
		499	case EIO_STAT:
		500	case EIO_LSTAT:
		501	case EIO_FSTAT:
		502	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		503	PL_laststatval = req->result;
		504	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		505	PUSHs (sv_result);
		506	break;
		507
		508	case EIO_READ:
		509	{
		510	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		511	*SvEND (req->sv2) = 0;
		512	SvPOK_only (req->sv2);
		513	SvSETMAGIC (req->sv2);
		514	PUSHs (sv_result);
		515	}
		516	break;
		517
		518	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		519	if (req->result > 0)
		520	SvIV_set (sv_result, 0);
		521	/* FALLTHROUGH */
		522
		523	default:
		524	PUSHs (sv_result);
		525	break;
177	}	526	}
178	break;
179		527
180	case REQ_OPEN:	528	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		529
185	XPUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	530	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	531	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	532	SPAGAIN;
189		533
190	fh = SvREFCNT_inc (POPs);	534	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		535	SvREFCNT_dec (sv_result);
		536	else
		537	sv_result_cache = sv_result;
191		538
192	PUSHMARK (SP);	539	FREETMPS;
193	XPUSHs (sv_2mortal (fh));	540	LEAVE;
194	}
195	break;
196		541
197	case REQ_SLEEP:	542	PUTBACK;
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}	543	}
205		544
206		545	return !!SvTRUE (ERRSV);
207	PUTBACK;
208	call_sv (req->callback, G_VOID | G_EVAL);
209	SPAGAIN;
210
211	if (SvTRUE (ERRSV))
212	{
213	req_free (req);
214	croak (0);
215	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	546	}
221		547
222	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
223	{	549	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	550	if (req->self)
240	{	551	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
243	}	554	}
244		555
245	if (req->data)
246	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
259
260	if (req->type == REQ_READDIR && req->result >= 0)
261	free (req->data2ptr);
262		559
263	Safefree (req);	560	Safefree (req);
264	}	561	}
265		562
266	static void req_cancel (aio_req req)	563	static void req_cancel_subs (aio_req grp)
267	{	564	{
268	req->cancelled = 1;	565	aio_req sub;
269		566
270	if (req->type == REQ_GROUP)	567	if (grp->type != EIO_GROUP)
		568	return;
		569
		570	SvREFCNT_dec (grp->sv2);
		571	grp->sv2 = 0;
		572
		573	eio_grp_cancel (grp);
		574	}
		575
		576	static void
		577	create_respipe (void)
		578	{
		579	if (s_epipe_renew (&respipe))
		580	croak ("IO::AIO: unable to initialize result pipe");
		581	}
		582
		583	static void poll_wait (void)
		584	{
		585	while (eio_nreqs ())
271	{	586	{
272	aio_req sub;	587	int size;
273		588
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	589	X_LOCK (reslock);
275	req_cancel (sub);	590	size = res_queue.size;
		591	X_UNLOCK (reslock);
		592
		593	if (size)
		594	return;
		595
		596	etp_maybe_start_thread ();
		597
		598	s_epipe_wait (&respipe);
276	}	599	}
277	}	600	}
278		601
279	static int poll_cb ()	602	static int poll_cb (void)
280	{	603	{
281	dSP;
282	int count = 0;
283	int do_croak = 0;
284	aio_req req;
285
286	for (;;)	604	for (;;)
287	{	605	{
288	pthread_mutex_lock (&reslock);	606	int res = eio_poll ();
289	req = ress;
290		607
291	if (req)	608	if (res > 0)
292	{
293	ress = req->next;
294
295	if (!ress)
296	{
297	/* read any signals sent by the worker threads */
298	char buf [32];
299	while (read (respipe [0], buf, 32) == 32)
300	;
301
302	rese = 0;
303	}
304	}
305
306	pthread_mutex_unlock (&reslock);
307
308	if (!req)
309	break;	609	croak (0);
310		610
311	nreqs--;	611	if (!max_outstanding || max_outstanding > eio_nreqs ())
		612	return res;
312		613
313	if (req->type == REQ_QUIT)	614	poll_wait ();
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{
319	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321
322	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}	615	}
339
340	return count;
341	}	616	}
342		617
343	static void *aio_proc(void *arg);
344
345	static void start_thread (void)	618	static void atfork_child (void)
346	{	619	{
347	sigset_t fullsigset, oldsigset;	620	create_respipe ();
348	pthread_t tid;
349	pthread_attr_t attr;
350
351	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354
355	sigfillset (&fullsigset);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357
358	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
359	started++;
360
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);
362	}
363
364	static void req_send (aio_req req)
365	{
366	while (started < wanted && nreqs >= started)
367	start_thread ();
368
369	nreqs++;
370
371	pthread_mutex_lock (&reqlock);
372
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}
397
398	static void end_thread (void)
399	{
400	aio_req req;
401	Newz (0, req, 1, aio_cb);
402	req->type = REQ_QUIT;
403
404	req_send (req);
405	}
406
407	static void min_parallel (int nthreads)
408	{
409	if (wanted < nthreads)
410	wanted = nthreads;
411	}
412
413	static void max_parallel (int nthreads)
414	{
415	int cur = started;
416
417	if (wanted > nthreads)
418	wanted = nthreads;
419
420	while (cur > wanted)
421	{
422	end_thread ();
423	cur--;
424	}
425
426	while (started > wanted)
427	{
428	poll_wait ();
429	poll_cb ();
430	}
431	}
432
433	static void create_pipe ()
434	{
435	if (pipe (respipe))
436	croak ("unable to initialize result pipe");
437
438	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
439	croak ("cannot set result pipe to nonblocking mode");
440
441	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
442	croak ("cannot set result pipe to nonblocking mode");
443	}	621	}
444		622
445	/*****************************************************************************/	623	/*****************************************************************************/
446	/* work around various missing functions */
447		624
448	#if !HAVE_PREADWRITE	625	#if !_POSIX_MAPPED_FILES
449	# define pread aio_pread	626	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
450	# define pwrite aio_pwrite	627	# define munmap(addr,length) (errno = ENOSYS, -1)
451
452	/*
453	* make our pread/pwrite safe against themselves, but not against
454	* normal read/write by using a mutex. slows down execution a lot,
455	* but that's your problem, not mine.
456	*/
457	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
458
459	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
460	{
461	ssize_t res;
462	off_t ooffset;
463
464	pthread_mutex_lock (&preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);
470
471	return res;
472	}
473
474	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
475	{
476	ssize_t res;
477	off_t ooffset;
478
479	pthread_mutex_lock (&preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);
485
486	return res;
487	}
488	#endif
489
490	#if !HAVE_FDATASYNC
491	# define fdatasync fsync
492	#endif
493
494	#if !HAVE_READAHEAD
495	# define readahead aio_readahead
496
497	static ssize_t readahead (int fd, off_t offset, size_t count)
498	{
499	char readahead_buf[4096];
500
501	while (count > 0)
502	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
504
505	pread (fd, readahead_buf, len, offset);
506	offset += len;
507	count -= len;
508	}
509
510	errno = 0;
511	}
512	#endif
513
514	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r
516
517	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
518
519	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
520	{
521	struct dirent *e;
522	int errorno;
523
524	pthread_mutex_lock (&readdirlock);
525
526	e = readdir (dirp);
527	errorno = errno;
528
529	if (e)
530	{
531	*res = ent;
532	strcpy (ent->d_name, e->d_name);
533	}
534	else
535	*res = 0;
536
537	pthread_mutex_unlock (&readdirlock);
538
539	errno = errorno;
540	return e ? 0 : -1;
541	}
542	#endif
543
544	/* sendfile always needs emulation */
545	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
546	{
547	ssize_t res;
548
549	if (!count)
550	return 0;
551
552	#if HAVE_SENDFILE
553	# if __linux
554	res = sendfile (ofd, ifd, &offset, count);
555
556	# elif __freebsd
557	/*
558	* Of course, the freebsd sendfile is a dire hack with no thoughts
559	* wasted on making it similar to other I/O functions.
560	*/
561	{
562	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564
565	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
567	res = sbytes;
568	}
569
570	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);
572
573	# elif __solaris
574	{
575	struct sendfilevec vec;
576	size_t sbytes;
577
578	vec.sfv_fd = ifd;
579	vec.sfv_flag = 0;
580	vec.sfv_off = offset;
581	vec.sfv_len = count;
582
583	res = sendfilev (ofd, &vec, 1, &sbytes);
584
585	if (res < 0 && sbytes)
586	res = sbytes;
587	}
588
589	# endif	628	#endif
590	#else
591	res = -1;
592	errno = ENOSYS;
593	#endif
594		629
595	if (res < 0	630	#define MMAP_MAGIC PERL_MAGIC_ext
596	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
597	#if __solaris
598	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
599	#endif
600	)
601	)
602	{
603	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];
605	res = 0;
606		631
607	while (count)	632	static int
608	{	633	mmap_free (pTHX_ SV *sv, MAGIC *mg)
609	ssize_t cnt;
610
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
612
613	if (cnt <= 0)
614	{
615	if (cnt && !res) res = -1;
616	break;
617	}
618
619	cnt = write (ofd, buf, cnt);
620
621	if (cnt <= 0)
622	{
623	if (cnt && !res) res = -1;
624	break;
625	}
626
627	offset += cnt;
628	res += cnt;
629	count -= cnt;
630	}
631	}
632
633	return res;
634	}
635
636	/* read a full directory */
637	static int scandir_ (const char *path, void **namesp)
638	{	634	{
639	DIR *dirp = opendir (path);	635	int old_errno = errno;
640	union	636	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
641	{
642	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;
645	struct dirent *entp;
646	char *name, *names;
647	int memlen = 4096;
648	int memofs = 0;
649	int res = 0;
650	int errorno;
651
652	if (!dirp)
653	return -1;
654
655	names = malloc (memlen);
656
657	for (;;)
658	{
659	errno = 0, readdir_r (dirp, &u.d, &entp);
660
661	if (!entp)
662	break;
663
664	name = entp->d_name;
665
666	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
667	{
668	int len = strlen (name) + 1;
669
670	res++;
671
672	while (memofs + len > memlen)
673	{
674	memlen *= 2;
675	names = realloc (names, memlen);
676	if (!names)
677	break;
678	}
679
680	memcpy (names + memofs, name, len);
681	memofs += len;
682	}
683	}
684
685	errorno = errno;	637	errno = old_errno;
686	closedir (dirp);
687		638
688	if (errorno)	639	mg->mg_obj = 0; /* just in case */
689	{
690	free (names);
691	errno = errorno;
692	res = -1;
693	}
694		640
695	*namesp = (void *)names;	641	SvREADONLY_off (sv);
		642
		643	if (SvPVX (sv) != mg->mg_ptr)
		644	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		645
		646	SvCUR_set (sv, 0);
		647	SvPVX (sv) = 0;
		648	SvOK_off (sv);
		649
696	return res;	650	return 0;
697	}	651	}
		652
		653	static MGVTBL mmap_vtbl = {
		654	0, 0, 0, 0, mmap_free
		655	};
698		656
699	/*****************************************************************************/	657	/*****************************************************************************/
700		658
701	static void *aio_proc (void *thr_arg)	659	static SV *
		660	get_cb (SV *cb_sv)
702	{	661	{
703	aio_req req;	662	SvGETMAGIC (cb_sv);
704	int type;	663	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
705
706	do
707	{
708	pthread_mutex_lock (&reqlock);
709
710	for (;;)
711	{
712	req = reqs;
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719
720	if (req)
721	break;
722
723	pthread_cond_wait (&reqwait, &reqlock);
724	}
725
726	pthread_mutex_unlock (&reqlock);
727
728	errno = 0; /* strictly unnecessary */
729
730	if (!req->cancelled)
731	switch (req->type)
732	{
733	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
734	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
735
736	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
737	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
738
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
742
743	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
744	case REQ_CLOSE: req->result = close (req->fd); break;
745	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
746	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
747	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
750
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
754
755	case REQ_SLEEP:
756	{
757	struct timeval tv;
758
759	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;
761
762	req->result = select (0, 0, 0, 0, &tv);
763	}
764
765	case REQ_QUIT:
766	break;
767
768	default:
769	req->result = ENOSYS;
770	break;
771	}
772
773	req->errorno = errno;
774
775	pthread_mutex_lock (&reslock);
776
777	req->next = 0;
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}
784	else
785	{
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);
790	}
791
792	pthread_mutex_unlock (&reslock);
793	}
794	while (type != REQ_QUIT);
795
796	return 0;
797	}
798
799	/*****************************************************************************/
800
801	static void atfork_prepare (void)
802	{
803	pthread_mutex_lock (&reqlock);
804	pthread_mutex_lock (&reslock);
805	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);
807	#endif
808	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);
810	#endif
811	}
812
813	static void atfork_parent (void)
814	{
815	#if !HAVE_READDIR_R
816	pthread_mutex_unlock (&readdirlock);
817	#endif
818	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);
820	#endif
821	pthread_mutex_unlock (&reslock);
822	pthread_mutex_unlock (&reqlock);
823	}
824
825	static void atfork_child (void)
826	{
827	aio_req prv;
828
829	started = 0;
830
831	while (reqs)
832	{
833	prv = reqs;
834	reqs = prv->next;
835	req_free (prv);
836	}
837
838	reqs = reqe = 0;
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848
849	close (respipe [0]);
850	close (respipe [1]);
851	create_pipe ();
852
853	atfork_parent ();
854	}	664	}
855		665
856	#define dREQ \	666	#define dREQ \
		667	SV *cb_cv; \
857	aio_req req; \	668	aio_req req; \
		669	int req_pri = next_pri; \
		670	next_pri = EIO_PRI_DEFAULT; \
858	\	671	\
859	if (SvOK (callback) && !SvROK (callback)) \	672	cb_cv = get_cb (callback); \
860	croak ("callback must be undef or of reference type"); \
861	\	673	\
862	Newz (0, req, 1, aio_cb); \	674	Newz (0, req, 1, eio_req); \
863	if (!req) \	675	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	676	croak ("out of memory during eio_req allocation"); \
865	\	677	\
866	req->callback = newSVsv (callback)	678	req->callback = SvREFCNT_inc (cb_cv); \
		679	req->pri = req_pri
867		680
868	#define REQ_SEND \	681	#define REQ_SEND \
		682	PUTBACK; \
869	req_send (req); \	683	req_submit (req); \
		684	SPAGAIN; \
870	\	685	\
871	if (GIMME_V != G_VOID) \	686	if (GIMME_V != G_VOID) \
872	XPUSHs (req_sv (req, AIO_REQ_KLASS));	687	XPUSHs (req_sv (req, aio_req_stash));
873		688
874	MODULE = IO::AIO PACKAGE = IO::AIO	689	MODULE = IO::AIO PACKAGE = IO::AIO
875		690
876	PROTOTYPES: ENABLE	691	PROTOTYPES: ENABLE
877		692
878	BOOT:	693	BOOT:
879	{	694	{
		695	static const struct {
		696	const char *name;
		697	IV iv;
		698	} *civ, const_iv[] = {
		699	# define const_niv(name, value) { # name, (IV) value },
		700	# define const_iv(name) { # name, (IV) name },
		701	# define const_eio(name) { # name, (IV) EIO_ ## name },
		702	const_iv (EXDEV)
		703	const_iv (ENOSYS)
		704	const_iv (O_RDONLY)
		705	const_iv (O_WRONLY)
		706	const_iv (O_RDWR)
		707	const_iv (O_CREAT)
		708	const_iv (O_TRUNC)
		709	const_iv (O_EXCL)
		710	const_iv (O_APPEND)
		711	#ifndef _WIN32
		712	const_iv (S_IFIFO)
		713	#endif
		714	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		715	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		716	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		717	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		718	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		719	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		720
		721	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		722	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		723	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		724	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		725	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		726
		727	const_iv (ST_RDONLY)
		728	const_iv (ST_NOSUID)
		729	const_iv (ST_NODEV)
		730	const_iv (ST_NOEXEC)
		731	const_iv (ST_SYNCHRONOUS)
		732	const_iv (ST_MANDLOCK)
		733	const_iv (ST_WRITE)
		734	const_iv (ST_APPEND)
		735	const_iv (ST_IMMUTABLE)
		736	const_iv (ST_NOATIME)
		737	const_iv (ST_NODIRATIME)
		738	const_iv (ST_RELATIME)
		739
		740	const_iv (PROT_EXEC)
		741	const_iv (PROT_NONE)
		742	const_iv (PROT_READ)
		743	const_iv (PROT_WRITE)
		744
		745	/*const_iv (MAP_FIXED)*/
		746	const_iv (MAP_PRIVATE)
		747	const_iv (MAP_SHARED)
		748	const_iv (MAP_ANONYMOUS)
		749
		750	/* linuxish */
		751	const_iv (MAP_HUGETLB)
		752	const_iv (MAP_LOCKED)
		753	const_iv (MAP_NORESERVE)
		754	const_iv (MAP_POPULATE)
		755	const_iv (MAP_NONBLOCK)
		756
		757	const_iv (MCL_FUTURE)
		758	const_iv (MCL_CURRENT)
		759
		760	const_eio (MS_ASYNC)
		761	const_eio (MS_INVALIDATE)
		762	const_eio (MS_SYNC)
		763
		764	const_eio (MT_MODIFY)
		765
		766	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		767	const_eio (SYNC_FILE_RANGE_WRITE)
		768	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		769
		770	const_eio (READDIR_DENTS)
		771	const_eio (READDIR_DIRS_FIRST)
		772	const_eio (READDIR_STAT_ORDER)
		773	const_eio (READDIR_FOUND_UNKNOWN)
		774
		775	const_eio (DT_UNKNOWN)
		776	const_eio (DT_FIFO)
		777	const_eio (DT_CHR)
		778	const_eio (DT_DIR)
		779	const_eio (DT_BLK)
		780	const_eio (DT_REG)
		781	const_eio (DT_LNK)
		782	const_eio (DT_SOCK)
		783	const_eio (DT_WHT)
		784	};
		785
880	HV *stash = gv_stashpv ("IO::AIO", 1);	786	aio_stash = gv_stashpv ("IO::AIO" , 1);
881	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	787	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
882	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	788	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
883	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
884		789
		790	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		791	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		792
		793	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		794
885	create_pipe ();	795	create_respipe ();
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
887	}
888		796
		797	if (eio_init (want_poll, done_poll) < 0)
		798	croak ("IO::AIO: unable to initialise eio library");
		799
		800	/* atfork child called in fifo order, so before eio's handler */
		801	X_THREAD_ATFORK (0, 0, atfork_child);
		802	}
		803
889	void	804	void
890	min_parallel (nthreads)	805	max_poll_reqs (int nreqs)
891	int nthreads
892	PROTOTYPE: $	806	PROTOTYPE: $
		807	CODE:
		808	eio_set_max_poll_reqs (nreqs);
893		809
894	void	810	void
895	max_parallel (nthreads)	811	max_poll_time (double nseconds)
896	int nthreads
897	PROTOTYPE: $	812	PROTOTYPE: $
898
899	int
900	max_outstanding (nreqs)
901	int nreqs
902	PROTOTYPE: $
903	CODE:	813	CODE:
904	RETVAL = max_outstanding;	814	eio_set_max_poll_time (nseconds);
		815
		816	void
		817	min_parallel (int nthreads)
		818	PROTOTYPE: $
		819	CODE:
		820	eio_set_min_parallel (nthreads);
		821
		822	void
		823	max_parallel (int nthreads)
		824	PROTOTYPE: $
		825	CODE:
		826	eio_set_max_parallel (nthreads);
		827
		828	void
		829	max_idle (int nthreads)
		830	PROTOTYPE: $
		831	CODE:
		832	eio_set_max_idle (nthreads);
		833
		834	void
		835	max_outstanding (int maxreqs)
		836	PROTOTYPE: $
		837	CODE:
905	max_outstanding = nreqs;	838	max_outstanding = maxreqs;
906		839
907	void	840	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	841	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
909	SV * pathname
910	int flags
911	int mode
912	SV * callback
913	PROTOTYPE: $$$;$	842	PROTOTYPE: $$$;$
914	PPCODE:	843	PPCODE:
915	{	844	{
916	dREQ;	845	dREQ;
917		846
918	req->type = REQ_OPEN;	847	req->type = EIO_OPEN;
919	req->data = newSVsv (pathname);	848	req->sv1 = newSVsv (pathname);
920	req->dataptr = SvPVbyte_nolen (req->data);	849	req->ptr1 = SvPVbyte_nolen (req->sv1);
921	req->fd = flags;	850	req->int1 = flags;
922	req->mode = mode;	851	req->int2 = mode;
923		852
924	REQ_SEND;	853	REQ_SEND;
925	}	854	}
926		855
927	void	856	void
928	aio_close (fh,callback=&PL_sv_undef)	857	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
929	SV * fh
930	SV * callback
931	PROTOTYPE: $;$	858	PROTOTYPE: $;$
932	ALIAS:	859	ALIAS:
933	aio_close = REQ_CLOSE
934	aio_fsync = REQ_FSYNC	860	aio_fsync = EIO_FSYNC
935	aio_fdatasync = REQ_FDATASYNC	861	aio_fdatasync = EIO_FDATASYNC
936	PPCODE:	862	PPCODE:
937	{	863	{
		864	int fd = s_fileno_croak (fh, 0);
938	dREQ;	865	dREQ;
939		866
940	req->type = ix;	867	req->type = ix;
941	req->fh = newSVsv (fh);	868	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	869	req->int1 = fd;
943		870
944	REQ_SEND (req);	871	REQ_SEND (req);
945	}	872	}
946		873
947	void	874	void
		875	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		876	PROTOTYPE: $$$$;$
		877	PPCODE:
		878	{
		879	int fd = s_fileno_croak (fh, 0);
		880	dREQ;
		881
		882	req->type = EIO_SYNC_FILE_RANGE;
		883	req->sv1 = newSVsv (fh);
		884	req->int1 = fd;
		885	req->offs = offset;
		886	req->size = nbytes;
		887	req->int2 = flags;
		888
		889	REQ_SEND (req);
		890	}
		891
		892	void
		893	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		894	PROTOTYPE: $;$
		895	PPCODE:
		896	{
		897	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		898	int fd = s_fileno_croak (fh, 0);
		899	dREQ;
		900
		901	if (close_pipe < 0)
		902	{
		903	int pipefd [2];
		904
		905	if (pipe (pipefd) < 0
		906	|| close (pipefd [1]) < 0
		907	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		908	abort (); /*D*/
		909
		910	close_pipe = pipefd [0];
		911	}
		912
		913	req->type = EIO_DUP2;
		914	req->int1 = close_pipe;
		915	req->sv2 = newSVsv (fh);
		916	req->int2 = fd;
		917
		918	REQ_SEND (req);
		919	}
		920
		921	void
948	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	922	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
949	SV * fh
950	UV offset
951	UV length
952	SV * data
953	UV dataoffset
954	SV * callback
955	ALIAS:	923	ALIAS:
956	aio_read = REQ_READ	924	aio_read = EIO_READ
957	aio_write = REQ_WRITE	925	aio_write = EIO_WRITE
958	PROTOTYPE: $$$$$;$	926	PROTOTYPE: $$$$$;$
959	PPCODE:	927	PPCODE:
960	{	928	{
961	aio_req req;
962	STRLEN svlen;	929	STRLEN svlen;
		930	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
963	char *svptr = SvPVbyte (data, svlen);	931	char *svptr = SvPVbyte (data, svlen);
964		932	UV len = SvUV (length);
965	SvUPGRADE (data, SVt_PV);
966	SvPOK_on (data);
967		933
968	if (dataoffset < 0)	934	if (dataoffset < 0)
969	dataoffset += svlen;	935	dataoffset += svlen;
970		936
971	if (dataoffset < 0 || dataoffset > svlen)	937	if (dataoffset < 0 || dataoffset > svlen)
972	croak ("data offset outside of string");	938	croak ("dataoffset outside of data scalar");
973		939
974	if (ix == REQ_WRITE)	940	if (ix == EIO_WRITE)
975	{	941	{
976	/* write: check length and adjust. */	942	/* write: check length and adjust. */
977	if (length < 0 || length + dataoffset > svlen)	943	if (!SvOK (length) || len + dataoffset > svlen)
978	length = svlen - dataoffset;	944	len = svlen - dataoffset;
979	}	945	}
980	else	946	else
981	{	947	{
982	/* read: grow scalar as necessary */	948	/* read: check type and grow scalar as necessary */
		949	SvUPGRADE (data, SVt_PV);
983	svptr = SvGROW (data, length + dataoffset);	950	svptr = SvGROW (data, len + dataoffset + 1);
984	}	951	}
985
986	if (length < 0)
987	croak ("length must not be negative");
988		952
989	{	953	{
990	dREQ;	954	dREQ;
991		955
992	req->type = ix;	956	req->type = ix;
993	req->fh = newSVsv (fh);	957	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	958	req->int1 = fd;
995	: IoOFP (sv_2io (fh)));	959	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
996	req->offset = offset;	960	req->size = len;
997	req->length = length;
998	req->data = SvREFCNT_inc (data);	961	req->sv2 = SvREFCNT_inc (data);
999	req->dataptr = (char *)svptr + dataoffset;	962	req->ptr2 = (char *)svptr + dataoffset;
		963	req->stroffset = dataoffset;
1000		964
1001	if (!SvREADONLY (data))	965	if (!SvREADONLY (data))
1002	{	966	{
1003	SvREADONLY_on (data);	967	SvREADONLY_on (data);
1004	req->data2ptr = (void *)data;	968	req->flags |= FLAG_SV2_RO_OFF;
1005	}	969	}
1006		970
1007	REQ_SEND;	971	REQ_SEND;
1008	}	972	}
1009	}	973	}
1010		974
1011	void	975	void
		976	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		977	PROTOTYPE: $$;$
		978	PPCODE:
		979	{
		980	SV *data;
		981	dREQ;
		982
		983	req->type = EIO_READLINK;
		984	req->sv1 = newSVsv (path);
		985	req->ptr1 = SvPVbyte_nolen (req->sv1);
		986
		987	REQ_SEND;
		988	}
		989
		990	void
1012	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	991	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1013	SV * out_fh
1014	SV * in_fh
1015	UV in_offset
1016	UV length
1017	SV * callback
1018	PROTOTYPE: $$$$;$	992	PROTOTYPE: $$$$;$
1019	PPCODE:	993	PPCODE:
1020	{	994	{
		995	int ifd = s_fileno_croak (in_fh , 0);
		996	int ofd = s_fileno_croak (out_fh, 1);
1021	dREQ;	997	dREQ;
1022		998
1023	req->type = REQ_SENDFILE;	999	req->type = EIO_SENDFILE;
1024	req->fh = newSVsv (out_fh);	1000	req->sv1 = newSVsv (out_fh);
1025	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1001	req->int1 = ofd;
1026	req->fh2 = newSVsv (in_fh);	1002	req->sv2 = newSVsv (in_fh);
1027	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1003	req->int2 = ifd;
1028	req->offset = in_offset;	1004	req->offs = in_offset;
1029	req->length = length;	1005	req->size = length;
1030		1006
1031	REQ_SEND;	1007	REQ_SEND;
1032	}	1008	}
1033		1009
1034	void	1010	void
1035	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1011	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1036	SV * fh
1037	UV offset
1038	IV length
1039	SV * callback
1040	PROTOTYPE: $$$;$	1012	PROTOTYPE: $$$;$
1041	PPCODE:	1013	PPCODE:
1042	{	1014	{
		1015	int fd = s_fileno_croak (fh, 0);
1043	dREQ;	1016	dREQ;
1044		1017
1045	req->type = REQ_READAHEAD;	1018	req->type = EIO_READAHEAD;
1046	req->fh = newSVsv (fh);	1019	req->sv1 = newSVsv (fh);
1047	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1020	req->int1 = fd;
1048	req->offset = offset;	1021	req->offs = offset;
1049	req->length = length;	1022	req->size = length;
1050		1023
1051	REQ_SEND;	1024	REQ_SEND;
1052	}	1025	}
1053		1026
1054	void	1027	void
1055	aio_stat (fh_or_path,callback=&PL_sv_undef)	1028	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1056	SV * fh_or_path
1057	SV * callback
1058	ALIAS:	1029	ALIAS:
1059	aio_stat = REQ_STAT	1030	aio_stat = EIO_STAT
1060	aio_lstat = REQ_LSTAT	1031	aio_lstat = EIO_LSTAT
		1032	aio_statvfs = EIO_STATVFS
1061	PPCODE:	1033	PPCODE:
1062	{	1034	{
1063	dREQ;	1035	dREQ;
1064		1036
1065	New (0, req->statdata, 1, Stat_t);	1037	req->sv1 = newSVsv (fh_or_path);
1066	if (!req->statdata)
1067	{
1068	req_free (req);
1069	croak ("out of memory during aio_req->statdata allocation");
1070	}
1071		1038
1072	if (SvPOK (fh_or_path))	1039	if (SvPOK (req->sv1))
1073	{	1040	{
1074	req->type = ix;	1041	req->type = ix;
1075	req->data = newSVsv (fh_or_path);
1076	req->dataptr = SvPVbyte_nolen (req->data);	1042	req->ptr1 = SvPVbyte_nolen (req->sv1);
1077	}	1043	}
1078	else	1044	else
1079	{	1045	{
1080	req->type = REQ_FSTAT;	1046	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1081	req->fh = newSVsv (fh_or_path);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1047	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1083	}	1048	}
1084		1049
1085	REQ_SEND;	1050	REQ_SEND;
1086	}	1051	}
1087		1052
1088	void	1053	void
		1054	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1055	PPCODE:
		1056	{
		1057	dREQ;
		1058
		1059	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1060	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1061	req->sv1 = newSVsv (fh_or_path);
		1062
		1063	if (SvPOK (req->sv1))
		1064	{
		1065	req->type = EIO_UTIME;
		1066	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1067	}
		1068	else
		1069	{
		1070	req->type = EIO_FUTIME;
		1071	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1072	}
		1073
		1074	REQ_SEND;
		1075	}
		1076
		1077	void
		1078	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1079	PPCODE:
		1080	{
		1081	dREQ;
		1082
		1083	req->sv1 = newSVsv (fh_or_path);
		1084	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1085
		1086	if (SvPOK (req->sv1))
		1087	{
		1088	req->type = EIO_TRUNCATE;
		1089	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1090	}
		1091	else
		1092	{
		1093	req->type = EIO_FTRUNCATE;
		1094	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1095	}
		1096
		1097	REQ_SEND;
		1098	}
		1099
		1100	void
		1101	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1102	ALIAS:
		1103	aio_chmod = EIO_CHMOD
		1104	aio_mkdir = EIO_MKDIR
		1105	PPCODE:
		1106	{
		1107	dREQ;
		1108
		1109	req->int2 = mode;
		1110	req->sv1 = newSVsv (fh_or_path);
		1111
		1112	if (SvPOK (req->sv1))
		1113	{
		1114	req->type = ix;
		1115	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1116	}
		1117	else
		1118	{
		1119	req->type = EIO_FCHMOD;
		1120	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1121	}
		1122
		1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
		1132	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1133	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1134	req->sv1 = newSVsv (fh_or_path);
		1135
		1136	if (SvPOK (req->sv1))
		1137	{
		1138	req->type = EIO_CHOWN;
		1139	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1140	}
		1141	else
		1142	{
		1143	req->type = EIO_FCHOWN;
		1144	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1145	}
		1146
		1147	REQ_SEND;
		1148	}
		1149
		1150	void
		1151	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	dREQ;
		1155
		1156	req->type = EIO_READDIR;
		1157	req->sv1 = newSVsv (pathname);
		1158	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1159	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1160
		1161	if (flags & EIO_READDIR_DENTS)
		1162	req->int1 |= EIO_READDIR_CUSTOM2;
		1163
		1164	REQ_SEND;
		1165	}
		1166
		1167	void
1089	aio_unlink (pathname,callback=&PL_sv_undef)	1168	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1090	SV * pathname
1091	SV * callback
1092	ALIAS:	1169	ALIAS:
1093	aio_unlink = REQ_UNLINK	1170	aio_unlink = EIO_UNLINK
1094	aio_rmdir = REQ_RMDIR	1171	aio_rmdir = EIO_RMDIR
1095	aio_readdir = REQ_READDIR	1172	aio_readdir = EIO_READDIR
1096	PPCODE:	1173	PPCODE:
1097	{	1174	{
1098	dREQ;	1175	dREQ;
1099		1176
1100	req->type = ix;	1177	req->type = ix;
1101	req->data = newSVsv (pathname);	1178	req->sv1 = newSVsv (pathname);
1102	req->dataptr = SvPVbyte_nolen (req->data);	1179	req->ptr1 = SvPVbyte_nolen (req->sv1);
1103		1180
1104	REQ_SEND;	1181	REQ_SEND;
1105	}	1182	}
1106		1183
1107	void	1184	void
1108	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1185	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1109	SV * oldpath
1110	SV * newpath
1111	SV * callback
1112	ALIAS:	1186	ALIAS:
1113	aio_link = REQ_LINK	1187	aio_link = EIO_LINK
1114	aio_symlink = REQ_SYMLINK	1188	aio_symlink = EIO_SYMLINK
1115	aio_rename = REQ_RENAME	1189	aio_rename = EIO_RENAME
1116	PPCODE:	1190	PPCODE:
1117	{	1191	{
1118	dREQ;	1192	dREQ;
1119		1193
1120	req->type = ix;	1194	req->type = ix;
1121	req->fh = newSVsv (oldpath);	1195	req->sv1 = newSVsv (oldpath);
1122	req->data2ptr = SvPVbyte_nolen (req->fh);	1196	req->ptr1 = SvPVbyte_nolen (req->sv1);
1123	req->data = newSVsv (newpath);	1197	req->sv2 = newSVsv (newpath);
1124	req->dataptr = SvPVbyte_nolen (req->data);	1198	req->ptr2 = SvPVbyte_nolen (req->sv2);
1125		1199
1126	REQ_SEND;	1200	REQ_SEND;
1127	}	1201	}
1128		1202
1129	void	1203	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1204	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1131	double delay
1132	SV * callback
1133	PPCODE:	1205	PPCODE:
1134	{	1206	{
1135	dREQ;	1207	dREQ;
1136		1208
1137	req->type = REQ_SLEEP;	1209	req->type = EIO_MKNOD;
1138	req->fd = delay < 0. ? 0 : delay;	1210	req->sv1 = newSVsv (pathname);
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140		1212	req->int2 = (mode_t)mode;
		1213	req->offs = dev;
		1214
1141	REQ_SEND;	1215	REQ_SEND;
1142	}	1216	}
1143		1217
1144	void	1218	void
1145	aio_group (callback=&PL_sv_undef)	1219	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1146	SV * callback	1220	ALIAS:
		1221	aio_mtouch = EIO_MTOUCH
		1222	aio_msync = EIO_MSYNC
1147	PROTOTYPE: ;&	1223	PROTOTYPE: $$$$;$
1148	PPCODE:	1224	PPCODE:
1149	{	1225	{
		1226	STRLEN svlen;
		1227	UV len = SvUV (length);
		1228	char *svptr = SvPVbyte (data, svlen);
		1229
		1230	if (offset < 0)
		1231	offset += svlen;
		1232
		1233	if (offset < 0 || offset > svlen)
		1234	croak ("offset outside of scalar");
		1235
		1236	if (!SvOK (length) || len + offset > svlen)
		1237	len = svlen - offset;
		1238
		1239	{
		1240	dREQ;
		1241
		1242	req->type = ix;
		1243	req->size = len;
		1244	req->sv2 = SvREFCNT_inc (data);
		1245	req->ptr2 = (char *)svptr + offset;
		1246	req->int1 = flags;
		1247
		1248	REQ_SEND;
		1249	}
		1250	}
		1251
		1252	void
		1253	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1254	PPCODE:
		1255	{
1150	dREQ;	1256	dREQ;
		1257
		1258	req->type = EIO_BUSY;
		1259	req->nv1 = delay < 0. ? 0. : delay;
		1260
		1261	REQ_SEND;
		1262	}
		1263
		1264	void
		1265	aio_group (SV *callback=&PL_sv_undef)
		1266	PROTOTYPE: ;$
		1267	PPCODE:
		1268	{
		1269	dREQ;
		1270
1151	req->type = REQ_GROUP;	1271	req->type = EIO_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154		1272
1155	req_send (req);	1273	req_submit (req);
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1274	XPUSHs (req_sv (req, aio_grp_stash));
1157	}	1275	}
		1276
		1277	void
		1278	aio_nop (SV *callback=&PL_sv_undef)
		1279	ALIAS:
		1280	aio_nop = EIO_NOP
		1281	aio_sync = EIO_SYNC
		1282	PPCODE:
		1283	{
		1284	dREQ;
		1285
		1286	req->type = ix;
		1287
		1288	REQ_SEND;
		1289	}
		1290
		1291	int
		1292	aioreq_pri (int pri = 0)
		1293	PROTOTYPE: ;$
		1294	CODE:
		1295	RETVAL = next_pri;
		1296	if (items > 0)
		1297	{
		1298	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1299	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1300	next_pri = pri;
		1301	}
		1302	OUTPUT:
		1303	RETVAL
		1304
		1305	void
		1306	aioreq_nice (int nice = 0)
		1307	CODE:
		1308	nice = next_pri - nice;
		1309	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1310	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1311	next_pri = nice;
1158		1312
1159	void	1313	void
1160	flush ()	1314	flush ()
1161	PROTOTYPE:	1315	PROTOTYPE:
1162	CODE:	1316	CODE:
1163	while (nreqs)	1317	while (eio_nreqs ())
1164	{	1318	{
1165	poll_wait ();	1319	poll_wait ();
1166	poll_cb ();	1320	poll_cb ();
1167	}	1321	}
1168		1322
1169	void	1323	int
1170	poll()	1324	poll()
1171	PROTOTYPE:	1325	PROTOTYPE:
1172	CODE:	1326	CODE:
1173	if (nreqs)
1174	{
1175	poll_wait ();	1327	poll_wait ();
1176	poll_cb ();	1328	RETVAL = poll_cb ();
1177	}	1329	OUTPUT:
		1330	RETVAL
1178		1331
1179	int	1332	int
1180	poll_fileno()	1333	poll_fileno()
1181	PROTOTYPE:	1334	PROTOTYPE:
1182	CODE:	1335	CODE:
1183	RETVAL = respipe [0];	1336	RETVAL = s_epipe_fd (&respipe);
1184	OUTPUT:	1337	OUTPUT:
1185	RETVAL	1338	RETVAL
1186		1339
1187	int	1340	int
1188	poll_cb(...)	1341	poll_cb(...)
…		…
1194		1347
1195	void	1348	void
1196	poll_wait()	1349	poll_wait()
1197	PROTOTYPE:	1350	PROTOTYPE:
1198	CODE:	1351	CODE:
1199	if (nreqs)
1200	poll_wait ();	1352	poll_wait ();
1201		1353
1202	int	1354	int
1203	nreqs()	1355	nreqs()
1204	PROTOTYPE:	1356	PROTOTYPE:
1205	CODE:	1357	CODE:
1206	RETVAL = nreqs;	1358	RETVAL = eio_nreqs ();
1207	OUTPUT:	1359	OUTPUT:
1208	RETVAL	1360	RETVAL
1209		1361
		1362	int
		1363	nready()
		1364	PROTOTYPE:
		1365	CODE:
		1366	RETVAL = eio_nready ();
		1367	OUTPUT:
		1368	RETVAL
		1369
		1370	int
		1371	npending()
		1372	PROTOTYPE:
		1373	CODE:
		1374	RETVAL = eio_npending ();
		1375	OUTPUT:
		1376	RETVAL
		1377
		1378	int
		1379	nthreads()
		1380	PROTOTYPE:
		1381	CODE:
		1382	RETVAL = eio_nthreads ();
		1383	OUTPUT:
		1384	RETVAL
		1385
		1386	int
		1387	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1388	PROTOTYPE: $$$$
		1389	CODE:
		1390	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1391	RETVAL = posix_fadvise (fh, offset, length, advice);
		1392	#else
		1393	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1394	#endif
		1395	OUTPUT:
		1396	RETVAL
		1397
		1398	ssize_t
		1399	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1400	PROTOTYPE: $$$$
		1401	CODE:
		1402	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1403	OUTPUT:
		1404	RETVAL
		1405
		1406	void
		1407	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1408	PROTOTYPE: $$$$$;$
		1409	PPCODE:
		1410	sv_unmagic (scalar, MMAP_MAGIC);
		1411	{
		1412	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1413	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1414	if (addr == (void *)-1)
		1415	XSRETURN_NO;
		1416
		1417	sv_force_normal (scalar);
		1418
		1419	/* we store the length in mg_obj, as namlen is I32 :/ */
		1420	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1421	->mg_obj = (SV *)length;
		1422
		1423	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1424
		1425	if (!(prot & PROT_WRITE))
		1426	SvREADONLY_on (scalar);
		1427
		1428	if (SvLEN (scalar))
		1429	Safefree (SvPVX (scalar));
		1430
		1431	SvPVX (scalar) = (char *)addr;
		1432	SvCUR_set (scalar, length);
		1433	SvLEN_set (scalar, 0);
		1434	SvPOK_only (scalar);
		1435
		1436	XSRETURN_YES;
		1437	}
		1438
		1439	void
		1440	munmap (SV *scalar)
		1441	PROTOTYPE: $
		1442	CODE:
		1443	sv_unmagic (scalar, MMAP_MAGIC);
		1444
		1445	int
		1446	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1447	PROTOTYPE: $$$$
		1448	CODE:
		1449	{
		1450	char *addr = SvPV_nolen (scalar) + offset;
		1451
		1452	if (!SvOK (ST (2)))
		1453	length = SvCUR (scalar) - offset;
		1454
		1455	if (addr >= SvEND (scalar) || length <= 0)
		1456	XSRETURN_EMPTY;
		1457
		1458	#if _XOPEN_SOURCE >= 600 && !NO_MADVISE
		1459	RETVAL = posix_madvise (addr, length, advice);
		1460	#else
		1461	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1462	#endif
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
		1502	PROTOTYPES: DISABLE
		1503
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1505
1212	void	1506	void
1213	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1508	CODE:
1216	req_cancel (req);	1509	eio_cancel (req);
		1510
		1511	void
		1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
		1522	SvREFCNT_dec (req->callback);
		1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1217		1526
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1528
1220	void	1529	void
1221	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1531	PPCODE:
1224	{	1532	{
1225	int i;	1533	int i;
		1534
		1535	if (grp->int1 == 2)
		1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1226		1537
1227	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
1228	{	1539	{
1229	aio_req req = SvAIO_REQ (ST (i));	1540	aio_req req;
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237		1541
1238	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1544
		1545	req = SvAIO_REQ (ST (i));
		1546
		1547	if (req)
		1548	eio_grp_add (grp, req);
1240	}	1549	}
1241	}	1550	}
1242		1551
		1552	void
		1553	cancel_subs (aio_req_ornot req)
		1554	CODE:
		1555	req_cancel_subs (req);
		1556
		1557	void
		1558	result (aio_req grp, ...)
		1559	CODE:
		1560	{
		1561	int i;
		1562	AV *av;
		1563
		1564	grp->errorno = errno;
		1565
		1566	av = newAV ();
		1567	av_extend (av, items - 1);
		1568
		1569	for (i = 1; i < items; ++i )
		1570	av_push (av, newSVsv (ST (i)));
		1571
		1572	SvREFCNT_dec (grp->sv1);
		1573	grp->sv1 = (SV *)av;
		1574	}
		1575
		1576	void
		1577	errno (aio_req grp, int errorno = errno)
		1578	CODE:
		1579	grp->errorno = errorno;
		1580
		1581	void
		1582	limit (aio_req grp, int limit)
		1583	CODE:
		1584	eio_grp_limit (grp, limit);
		1585
		1586	void
		1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1588	CODE:
		1589	{
		1590	SvREFCNT_dec (grp->sv2);
		1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
		1593
		1594	if (grp->int2 <= 0)
		1595	grp->int2 = 2;
		1596
		1597	eio_grp_limit (grp, grp->int2);
		1598	}
		1599

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