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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 1.173 by root, Mon Sep 13 01:59:05 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	#if _XOPEN_SOURCE < 600 || NO_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	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef PROT_NONE
		171	# define PROT_NONE 0
		172	#endif
		173	#ifndef PROT_READ
		174	# define PROT_READ 0
		175	#endif
		176	#ifndef PROT_WRITE
		177	# define PROT_READ 0
		178	#endif
		179	#ifndef PROT_EXEC
		180	# define PROT_EXEC 0
		181	#endif
		182
		183	#ifndef ST_NODEV
		184	# define ST_NODEV 0
		185	#endif
		186	#ifndef ST_NOEXEC
		187	# define ST_NOEXEC 0
		188	#endif
		189	#ifndef ST_SYNCHRONOUS
		190	# define ST_SYNCHRONOUS 0
		191	#endif
		192	#ifndef ST_MANDLOCK
		193	# define ST_MANDLOCK 0
		194	#endif
		195	#ifndef ST_WRITE
		196	# define ST_WRITE 0
		197	#endif
		198	#ifndef ST_APPEND
		199	# define ST_APPEND 0
		200	#endif
		201	#ifndef ST_IMMUTABLE
		202	# define ST_IMMUTABLE 0
		203	#endif
		204	#ifndef ST_NOATIME
		205	# define ST_NOATIME 0
		206	#endif
		207	#ifndef ST_NODIRATIME
		208	# define ST_NODIRATIME 0
		209	#endif
		210	#ifndef ST_RELATIME
		211	# define ST_RELATIME 0
		212	#endif
		213
		214	#ifndef MAP_ANONYMOUS
		215	# ifdef MAP_ANON
		216	# define MAP_ANONYMOUS MAP_ANON
34	# else	217	# else
35	# error sendfile support requested but not available	218	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	219	# endif
37	#endif	220	#endif
38		221	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	222	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	223	#endif
43		224	#ifndef MAP_LOCKED
44	#if __ia64	225	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	226	#endif
		227	#ifndef MAP_NORESERVE
		228	# define MAP_NORESERVE 0
		229	#endif
		230	#ifndef MAP_POPULATE
		231	# define MAP_POPULATE 0
		232	#endif
		233	#ifndef MAP_NONBLOCK
		234	# define MAP_NONBLOCK 0
		235	#endif
		236
		237	#ifndef PAGESIZE
		238	# define PAGESIZE sysconf (_SC_PAGESIZE)
		239	#endif
		240
		241	static int req_invoke (eio_req *req);
		242	#define EIO_FINISH(req) req_invoke (req)
		243	static void req_destroy (eio_req *grp);
		244	#define EIO_DESTROY(req) req_destroy (req)
49		245
50	enum {	246	enum {
51	REQ_QUIT,	247	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	};	248	};
63		249
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		251
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;	252	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	253	typedef eio_req *aio_req_ornot;
93		254
94	static int started, wanted;	255	static SV *on_next_submit;
95	static volatile int nreqs;	256	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	257	static int max_outstanding;
97	static int respipe [2];
98		258
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	259	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		260
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	261	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);	262	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	263
		264	static void want_poll (void)
		265	{
		266	/* write a dummy byte to the pipe so fh becomes ready */
		267	s_epipe_signal (&respipe);
		268	}
		269
		270	static void done_poll (void)
		271	{
		272	/* read any signals sent by the worker threads */
		273	s_epipe_drain (&respipe);
		274	}
108		275
109	/* must be called at most once */	276	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	277	static SV *req_sv (aio_req req, HV *stash)
111	{	278	{
112	if (!req->self)	279	if (!req->self)
113	{	280	{
114	req->self = (SV *)newHV ();	281	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	282	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	283	}
117		284
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	285	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	286	}
120		287
121	static aio_req SvAIO_REQ (SV *sv)	288	static aio_req SvAIO_REQ (SV *sv)
122	{	289	{
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	290	MAGIC *mg;
		291
		292	if (!SvROK (sv)
		293	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		294	&& SvSTASH (SvRV (sv)) != aio_req_stash
		295	&& !sv_derived_from (sv, "IO::AIO::REQ")))
124	croak ("object of class " AIO_REQ_KLASS " expected");	296	croak ("object of class IO::AIO::REQ expected");
125		297
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	298	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		299
128	return mg ? (aio_req)mg->mg_ptr : 0;	300	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	301	}
130		302
131	static void aio_grp_feed (aio_req grp)	303	static void aio_grp_feed (aio_req grp)
132	{	304	{
133	while (grp->length < grp->fd2)	305	if (grp->sv2 && SvOK (grp->sv2))
134	{	306	{
135	int old_len = grp->length;	307	dSP;
136		308
137	if (grp->fh2 && SvOK (grp->fh2))	309	ENTER;
		310	SAVETMPS;
		311	PUSHMARK (SP);
		312	XPUSHs (req_sv (grp, aio_grp_stash));
		313	PUTBACK;
		314	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		315	SPAGAIN;
		316	FREETMPS;
		317	LEAVE;
		318	}
		319	}
		320
		321	static void req_submit (eio_req *req)
		322	{
		323	eio_submit (req);
		324
		325	if (expect_false (on_next_submit))
		326	{
		327	dSP;
		328	SV *cb = sv_2mortal (on_next_submit);
		329
		330	on_next_submit = 0;
		331
		332	PUSHMARK (SP);
		333	PUTBACK;
		334	call_sv (cb, G_DISCARD | G_EVAL);
		335	}
		336	}
		337
		338	static int req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
138	{	356	{
139	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
140		358	SvIV_set (sv_result, req->result);
141	ENTER;
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	}	359	}
151		360	else
152	/* stop if no progress has been made */
153	if (old_len == grp->length)
154	{	361	{
155	SvREFCNT_dec (grp->fh2);	362	sv_result = newSViv (req->result);
156	grp->fh2 = 0;	363	SvREADONLY_on (sv_result);
157	break;
158	}	364	}
		365
		366	switch (req->type)
		367	{
		368	case EIO_READDIR:
		369	{
		370	SV *rv = &PL_sv_undef;
		371
		372	if (req->result >= 0)
		373	{
		374	int i;
		375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		377	AV *av = newAV ();
		378
		379	av_extend (av, req->result - 1);
		380
		381	for (i = 0; i < req->result; ++i)
		382	{
		383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
		407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
		415	names += SvCUR (name) + 1;
		416	}
		417	}
		418
		419	rv = sv_2mortal (newRV_noinc ((SV *)av));
		420	}
		421
		422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		426	}
		427	break;
		428
		429	case EIO_OPEN:
		430	{
		431	/* convert fd to fh */
		432	SV *fh = &PL_sv_undef;
		433
		434	if (req->result >= 0)
		435	{
		436	GV *gv = (GV *)sv_newmortal ();
		437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		438	char sym [64];
		439	int symlen;
		440
		441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		442	gv_init (gv, aio_stash, sym, symlen, 0);
		443
		444	symlen = snprintf (
		445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
		456	PUSHs (fh);
		457	}
		458	break;
		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
		490	case EIO_GROUP:
		491	req->int1 = 2; /* mark group as finished */
		492
		493	if (req->sv1)
		494	{
		495	int i;
		496	AV *av = (AV *)req->sv1;
		497
		498	EXTEND (SP, AvFILL (av) + 1);
		499	for (i = 0; i <= AvFILL (av); ++i)
		500	PUSHs (*av_fetch (av, i, 0));
		501	}
		502	break;
		503
		504	case EIO_NOP:
		505	case EIO_BUSY:
		506	break;
		507
		508	case EIO_READLINK:
		509	if (req->result > 0)
		510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		511	break;
		512
		513	case EIO_STAT:
		514	case EIO_LSTAT:
		515	case EIO_FSTAT:
		516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		517	PL_laststatval = req->result;
		518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		519	PUSHs (sv_result);
		520	break;
		521
		522	case EIO_READ:
		523	{
		524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		525	*SvEND (req->sv2) = 0;
		526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
		530	break;
		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
		537	default:
		538	PUSHs (sv_result);
		539	break;
		540	}
		541
		542	errno = req->errorno;
		543
		544	PUTBACK;
		545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		546	SPAGAIN;
		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
		552
		553	FREETMPS;
		554	LEAVE;
		555
		556	PUTBACK;
159	}	557	}
160	}
161		558
162	static void aio_grp_dec (aio_req grp)	559	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	}	560	}
176		561
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)	562	static void req_destroy (aio_req req)
288	{	563	{
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)	564	if (req->self)
304	{	565	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
307	}	568	}
308		569
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	570	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	571	SvREFCNT_dec (req->sv2);
312	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317		573
318	Safefree (req);	574	Safefree (req);
319	}	575	}
320		576
321	static void req_cancel (aio_req req)	577	static void req_cancel_subs (aio_req grp)
322	{	578	{
323	req->cancelled = 1;	579	aio_req sub;
324		580
325	if (req->type == REQ_GROUP)	581	if (grp->type != EIO_GROUP)
		582	return;
		583
		584	SvREFCNT_dec (grp->sv2);
		585	grp->sv2 = 0;
		586
		587	eio_grp_cancel (grp);
		588	}
		589
		590	static void
		591	create_respipe (void)
		592	{
		593	if (s_epipe_renew (&respipe))
		594	croak ("IO::AIO: unable to initialize result pipe");
		595	}
		596
		597	static void poll_wait (void)
		598	{
		599	while (eio_nreqs ())
326	{	600	{
327	aio_req sub;	601	int size;
328		602
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	603	X_LOCK (reslock);
330	req_cancel (sub);	604	size = res_queue.size;
		605	X_UNLOCK (reslock);
		606
		607	if (size)
		608	return;
		609
		610	etp_maybe_start_thread ();
		611
		612	s_epipe_wait (&respipe);
331	}	613	}
332	}	614	}
333		615
334	static int poll_cb ()	616	static int poll_cb (void)
335	{	617	{
336	dSP;
337	int count = 0;
338	int do_croak = 0;
339	aio_req req;
340
341	for (;;)	618	for (;;)
342	{	619	{
343	pthread_mutex_lock (&reslock);	620	int res = eio_poll ();
344	req = ress;
345		621
346	if (req)	622	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;	623	croak (0);
365		624
366	--nreqs;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
		626	return res;
367		627
368	if (req->type == REQ_QUIT)	628	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	}	629	}
397
398	return count;
399	}	630	}
400		631
401	static void *aio_proc(void *arg);
402
403	static void start_thread (void)	632	static void atfork_child (void)
404	{	633	{
405	sigset_t fullsigset, oldsigset;	634	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	}	635	}
502		636
503	/*****************************************************************************/	637	/*****************************************************************************/
504	/* work around various missing functions */
505		638
506	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
507	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
508	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
509		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
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	643	#endif
648	#else
649	res = -1;
650	errno = ENOSYS;
651	#endif
652		644
653	if (res < 0	645	#define MMAP_MAGIC PERL_MAGIC_ext
654	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
655	#if __solaris
656	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
657	#endif
658	)
659	)
660	{
661	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];
663	res = 0;
664		646
665	while (count)	647	static int
666	{	648	mmap_free (pTHX_ SV *sv, MAGIC *mg)
667	ssize_t cnt;
668
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670
671	if (cnt <= 0)
672	{
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	{	649	{
697	DIR *dirp = opendir (path);	650	int old_errno = errno;
698	union	651	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;	652	errno = old_errno;
744	closedir (dirp);
745		653
746	if (errorno)	654	mg->mg_obj = 0; /* just in case */
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752		655
753	*namesp = (void *)names;	656	SvREADONLY_off (sv);
		657
		658	if (SvPVX (sv) != mg->mg_ptr)
		659	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		660
		661	SvCUR_set (sv, 0);
		662	SvPVX (sv) = 0;
		663	SvOK_off (sv);
		664
754	return res;	665	return 0;
755	}	666	}
		667
		668	static MGVTBL mmap_vtbl = {
		669	0, 0, 0, 0, mmap_free
		670	};
756		671
757	/*****************************************************************************/	672	/*****************************************************************************/
758		673
759	static void *aio_proc (void *thr_arg)	674	static SV *
		675	get_cb (SV *cb_sv)
760	{	676	{
761	aio_req req;	677	SvGETMAGIC (cb_sv);
762	int type;	678	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	}	679	}
913		680
914	#define dREQ \	681	#define dREQ \
		682	SV *cb_cv; \
915	aio_req req; \	683	aio_req req; \
		684	int req_pri = next_pri; \
		685	next_pri = EIO_PRI_DEFAULT; \
916	\	686	\
917	if (SvOK (callback) && !SvROK (callback)) \	687	cb_cv = get_cb (callback); \
918	croak ("callback must be undef or of reference type"); \
919	\	688	\
920	Newz (0, req, 1, aio_cb); \	689	Newz (0, req, 1, eio_req); \
921	if (!req) \	690	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	691	croak ("out of memory during eio_req allocation"); \
923	\	692	\
924	req->callback = newSVsv (callback)	693	req->callback = SvREFCNT_inc (cb_cv); \
		694	req->pri = req_pri
925		695
926	#define REQ_SEND \	696	#define REQ_SEND \
		697	PUTBACK; \
927	req_send (req); \	698	req_submit (req); \
		699	SPAGAIN; \
928	\	700	\
929	if (GIMME_V != G_VOID) \	701	if (GIMME_V != G_VOID) \
930	XPUSHs (req_sv (req, AIO_REQ_KLASS));	702	XPUSHs (req_sv (req, aio_req_stash));
931		703
932	MODULE = IO::AIO PACKAGE = IO::AIO	704	MODULE = IO::AIO PACKAGE = IO::AIO
933		705
934	PROTOTYPES: ENABLE	706	PROTOTYPES: ENABLE
935		707
936	BOOT:	708	BOOT:
937	{	709	{
		710	static const struct {
		711	const char *name;
		712	IV iv;
		713	} *civ, const_iv[] = {
		714	# define const_niv(name, value) { # name, (IV) value },
		715	# define const_iv(name) { # name, (IV) name },
		716	# define const_eio(name) { # name, (IV) EIO_ ## name },
		717	const_iv (EXDEV)
		718	const_iv (ENOSYS)
		719	const_iv (O_RDONLY)
		720	const_iv (O_WRONLY)
		721	const_iv (O_RDWR)
		722	const_iv (O_CREAT)
		723	const_iv (O_TRUNC)
		724	const_iv (O_EXCL)
		725	const_iv (O_APPEND)
		726	#ifndef _WIN32
		727	const_iv (S_IFIFO)
		728	#endif
		729	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		730	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		731	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		732	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		733	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		734	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		735
		736	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		737	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		738	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		739	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		740	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		741
		742	const_iv (ST_RDONLY)
		743	const_iv (ST_NOSUID)
		744	const_iv (ST_NODEV)
		745	const_iv (ST_NOEXEC)
		746	const_iv (ST_SYNCHRONOUS)
		747	const_iv (ST_MANDLOCK)
		748	const_iv (ST_WRITE)
		749	const_iv (ST_APPEND)
		750	const_iv (ST_IMMUTABLE)
		751	const_iv (ST_NOATIME)
		752	const_iv (ST_NODIRATIME)
		753	const_iv (ST_RELATIME)
		754
		755	const_iv (PROT_NONE)
		756	const_iv (PROT_EXEC)
		757	const_iv (PROT_READ)
		758	const_iv (PROT_WRITE)
		759
		760	/*const_iv (MAP_FIXED)*/
		761	const_iv (MAP_PRIVATE)
		762	const_iv (MAP_SHARED)
		763	const_iv (MAP_ANONYMOUS)
		764
		765	/* linuxish */
		766	const_iv (MAP_HUGETLB)
		767	const_iv (MAP_LOCKED)
		768	const_iv (MAP_NORESERVE)
		769	const_iv (MAP_POPULATE)
		770	const_iv (MAP_NONBLOCK)
		771
		772	const_eio (MCL_FUTURE)
		773	const_eio (MCL_CURRENT)
		774
		775	const_eio (MS_ASYNC)
		776	const_eio (MS_INVALIDATE)
		777	const_eio (MS_SYNC)
		778
		779	const_eio (MT_MODIFY)
		780
		781	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		782	const_eio (SYNC_FILE_RANGE_WRITE)
		783	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		784
		785	const_eio (READDIR_DENTS)
		786	const_eio (READDIR_DIRS_FIRST)
		787	const_eio (READDIR_STAT_ORDER)
		788	const_eio (READDIR_FOUND_UNKNOWN)
		789
		790	const_eio (DT_UNKNOWN)
		791	const_eio (DT_FIFO)
		792	const_eio (DT_CHR)
		793	const_eio (DT_DIR)
		794	const_eio (DT_BLK)
		795	const_eio (DT_REG)
		796	const_eio (DT_LNK)
		797	const_eio (DT_SOCK)
		798	const_eio (DT_WHT)
		799	};
		800
938	HV *stash = gv_stashpv ("IO::AIO", 1);	801	aio_stash = gv_stashpv ("IO::AIO" , 1);
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	802	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	803	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
941	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
942		804
		805	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		806	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		807
		808	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		809
943	create_pipe ();	810	create_respipe ();
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945	}
946		811
		812	if (eio_init (want_poll, done_poll) < 0)
		813	croak ("IO::AIO: unable to initialise eio library");
		814
		815	/* atfork child called in fifo order, so before eio's handler */
		816	X_THREAD_ATFORK (0, 0, atfork_child);
		817	}
		818
947	void	819	void
948	min_parallel (nthreads)	820	max_poll_reqs (int nreqs)
949	int nthreads
950	PROTOTYPE: $	821	PROTOTYPE: $
		822	CODE:
		823	eio_set_max_poll_reqs (nreqs);
951		824
952	void	825	void
953	max_parallel (nthreads)	826	max_poll_time (double nseconds)
954	int nthreads
955	PROTOTYPE: $	827	PROTOTYPE: $
956
957	int
958	max_outstanding (nreqs)
959	int nreqs
960	PROTOTYPE: $
961	CODE:	828	CODE:
962	RETVAL = max_outstanding;	829	eio_set_max_poll_time (nseconds);
		830
		831	void
		832	min_parallel (int nthreads)
		833	PROTOTYPE: $
		834	CODE:
		835	eio_set_min_parallel (nthreads);
		836
		837	void
		838	max_parallel (int nthreads)
		839	PROTOTYPE: $
		840	CODE:
		841	eio_set_max_parallel (nthreads);
		842
		843	void
		844	max_idle (int nthreads)
		845	PROTOTYPE: $
		846	CODE:
		847	eio_set_max_idle (nthreads);
		848
		849	void
		850	max_outstanding (int maxreqs)
		851	PROTOTYPE: $
		852	CODE:
963	max_outstanding = nreqs;	853	max_outstanding = maxreqs;
964		854
965	void	855	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	856	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:	857	PPCODE:
973	{	858	{
974	dREQ;	859	dREQ;
975		860
976	req->type = REQ_OPEN;	861	req->type = EIO_OPEN;
977	req->data = newSVsv (pathname);	862	req->sv1 = newSVsv (pathname);
978	req->dataptr = SvPVbyte_nolen (req->data);	863	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	req->fd = flags;	864	req->int1 = flags;
980	req->mode = mode;	865	req->int2 = mode;
981		866
982	REQ_SEND;	867	REQ_SEND;
983	}	868	}
984		869
985	void	870	void
986	aio_close (fh,callback=&PL_sv_undef)	871	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
987	SV * fh
988	SV * callback
989	PROTOTYPE: $;$
990	ALIAS:	872	ALIAS:
991	aio_close = REQ_CLOSE
992	aio_fsync = REQ_FSYNC	873	aio_fsync = EIO_FSYNC
993	aio_fdatasync = REQ_FDATASYNC	874	aio_fdatasync = EIO_FDATASYNC
994	PPCODE:	875	PPCODE:
995	{	876	{
		877	int fd = s_fileno_croak (fh, 0);
996	dREQ;	878	dREQ;
997		879
998	req->type = ix;	880	req->type = ix;
999	req->fh = newSVsv (fh);	881	req->sv1 = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	882	req->int1 = fd;
1001		883
1002	REQ_SEND (req);	884	REQ_SEND (req);
1003	}	885	}
1004		886
1005	void	887	void
		888	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		889	PPCODE:
		890	{
		891	int fd = s_fileno_croak (fh, 0);
		892	dREQ;
		893
		894	req->type = EIO_SYNC_FILE_RANGE;
		895	req->sv1 = newSVsv (fh);
		896	req->int1 = fd;
		897	req->offs = offset;
		898	req->size = nbytes;
		899	req->int2 = flags;
		900
		901	REQ_SEND (req);
		902	}
		903
		904	void
		905	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		906	PPCODE:
		907	{
		908	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		909	int fd = s_fileno_croak (fh, 0);
		910	dREQ;
		911
		912	if (close_pipe < 0)
		913	{
		914	int pipefd [2];
		915
		916	if (pipe (pipefd) < 0
		917	|| close (pipefd [1]) < 0
		918	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		919	abort (); /*D*/
		920
		921	close_pipe = pipefd [0];
		922	}
		923
		924	req->type = EIO_DUP2;
		925	req->int1 = close_pipe;
		926	req->sv2 = newSVsv (fh);
		927	req->int2 = fd;
		928
		929	REQ_SEND (req);
		930	}
		931
		932	void
1006	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	933	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:	934	ALIAS:
1014	aio_read = REQ_READ	935	aio_read = EIO_READ
1015	aio_write = REQ_WRITE	936	aio_write = EIO_WRITE
1016	PROTOTYPE: $$$$$;$
1017	PPCODE:	937	PPCODE:
1018	{	938	{
1019	aio_req req;
1020	STRLEN svlen;	939	STRLEN svlen;
		940	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1021	char *svptr = SvPVbyte (data, svlen);	941	char *svptr = SvPVbyte (data, svlen);
1022		942	UV len = SvUV (length);
1023	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);
1025		943
1026	if (dataoffset < 0)	944	if (dataoffset < 0)
1027	dataoffset += svlen;	945	dataoffset += svlen;
1028		946
1029	if (dataoffset < 0 || dataoffset > svlen)	947	if (dataoffset < 0 || dataoffset > svlen)
1030	croak ("data offset outside of string");	948	croak ("dataoffset outside of data scalar");
1031		949
1032	if (ix == REQ_WRITE)	950	if (ix == EIO_WRITE)
1033	{	951	{
1034	/* write: check length and adjust. */	952	/* write: check length and adjust. */
1035	if (length < 0 || length + dataoffset > svlen)	953	if (!SvOK (length) || len + dataoffset > svlen)
1036	length = svlen - dataoffset;	954	len = svlen - dataoffset;
1037	}	955	}
1038	else	956	else
1039	{	957	{
1040	/* read: grow scalar as necessary */	958	/* read: check type and grow scalar as necessary */
		959	SvUPGRADE (data, SVt_PV);
1041	svptr = SvGROW (data, length + dataoffset);	960	svptr = SvGROW (data, len + dataoffset + 1);
1042	}	961	}
1043
1044	if (length < 0)
1045	croak ("length must not be negative");
1046		962
1047	{	963	{
1048	dREQ;	964	dREQ;
1049		965
1050	req->type = ix;	966	req->type = ix;
1051	req->fh = newSVsv (fh);	967	req->sv1 = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	968	req->int1 = fd;
1053	: IoOFP (sv_2io (fh)));	969	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054	req->offset = offset;	970	req->size = len;
1055	req->length = length;
1056	req->data = SvREFCNT_inc (data);	971	req->sv2 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	972	req->ptr2 = (char *)svptr + dataoffset;
		973	req->stroffset = dataoffset;
1058		974
1059	if (!SvREADONLY (data))	975	if (!SvREADONLY (data))
1060	{	976	{
1061	SvREADONLY_on (data);	977	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	978	req->flags |= FLAG_SV2_RO_OFF;
1063	}	979	}
1064		980
1065	REQ_SEND;	981	REQ_SEND;
1066	}	982	}
1067	}	983	}
1068		984
1069	void	985	void
1070	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	986	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: $$$$;$
1077	PPCODE:	987	PPCODE:
1078	{	988	{
		989	SV *data;
		990	dREQ;
		991
		992	req->type = EIO_READLINK;
		993	req->sv1 = newSVsv (path);
		994	req->ptr1 = SvPVbyte_nolen (req->sv1);
		995
		996	REQ_SEND;
		997	}
		998
		999	void
		1000	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1001	PPCODE:
		1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1079	dREQ;	1005	dREQ;
1080		1006
1081	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1082	req->fh = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1084	req->fh2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1086	req->offset = in_offset;	1012	req->offs = in_offset;
1087	req->length = length;	1013	req->size = length;
1088		1014
1089	REQ_SEND;	1015	REQ_SEND;
1090	}	1016	}
1091		1017
1092	void	1018	void
1093	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1094	SV * fh
1095	UV offset
1096	IV length
1097	SV * callback
1098	PROTOTYPE: $$$;$
1099	PPCODE:	1020	PPCODE:
1100	{	1021	{
		1022	int fd = s_fileno_croak (fh, 0);
1101	dREQ;	1023	dREQ;
1102		1024
1103	req->type = REQ_READAHEAD;	1025	req->type = EIO_READAHEAD;
1104	req->fh = newSVsv (fh);	1026	req->sv1 = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1027	req->int1 = fd;
1106	req->offset = offset;	1028	req->offs = offset;
1107	req->length = length;	1029	req->size = length;
1108		1030
1109	REQ_SEND;	1031	REQ_SEND;
1110	}	1032	}
1111		1033
1112	void	1034	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	1035	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1114	SV * fh_or_path
1115	SV * callback
1116	ALIAS:	1036	ALIAS:
1117	aio_stat = REQ_STAT	1037	aio_stat = EIO_STAT
1118	aio_lstat = REQ_LSTAT	1038	aio_lstat = EIO_LSTAT
		1039	aio_statvfs = EIO_STATVFS
1119	PPCODE:	1040	PPCODE:
1120	{	1041	{
1121	dREQ;	1042	dREQ;
1122		1043
1123	New (0, req->statdata, 1, Stat_t);	1044	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		1045
1130	if (SvPOK (fh_or_path))	1046	if (SvPOK (req->sv1))
1131	{	1047	{
1132	req->type = ix;	1048	req->type = ix;
1133	req->data = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);	1049	req->ptr1 = SvPVbyte_nolen (req->sv1);
1135	}	1050	}
1136	else	1051	else
1137	{	1052	{
1138	req->type = REQ_FSTAT;	1053	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)));	1054	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}	1055	}
1142		1056
1143	REQ_SEND;	1057	REQ_SEND;
1144	}	1058	}
1145		1059
1146	void	1060	void
		1061	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1067	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1068	req->sv1 = newSVsv (fh_or_path);
		1069
		1070	if (SvPOK (req->sv1))
		1071	{
		1072	req->type = EIO_UTIME;
		1073	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1074	}
		1075	else
		1076	{
		1077	req->type = EIO_FUTIME;
		1078	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1079	}
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1086	PPCODE:
		1087	{
		1088	dREQ;
		1089
		1090	req->sv1 = newSVsv (fh_or_path);
		1091	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1092
		1093	if (SvPOK (req->sv1))
		1094	{
		1095	req->type = EIO_TRUNCATE;
		1096	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1097	}
		1098	else
		1099	{
		1100	req->type = EIO_FTRUNCATE;
		1101	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1102	}
		1103
		1104	REQ_SEND;
		1105	}
		1106
		1107	void
		1108	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1109	ALIAS:
		1110	aio_chmod = EIO_CHMOD
		1111	aio_mkdir = EIO_MKDIR
		1112	PPCODE:
		1113	{
		1114	dREQ;
		1115
		1116	req->int2 = mode;
		1117	req->sv1 = newSVsv (fh_or_path);
		1118
		1119	if (SvPOK (req->sv1))
		1120	{
		1121	req->type = ix;
		1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1123	}
		1124	else
		1125	{
		1126	req->type = EIO_FCHMOD;
		1127	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1128	}
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1140	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1141	req->sv1 = newSVsv (fh_or_path);
		1142
		1143	if (SvPOK (req->sv1))
		1144	{
		1145	req->type = EIO_CHOWN;
		1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1147	}
		1148	else
		1149	{
		1150	req->type = EIO_FCHOWN;
		1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1152	}
		1153
		1154	REQ_SEND;
		1155	}
		1156
		1157	void
		1158	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1159	PPCODE:
		1160	{
		1161	dREQ;
		1162
		1163	req->type = EIO_READDIR;
		1164	req->sv1 = newSVsv (pathname);
		1165	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1166	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1167
		1168	if (flags & EIO_READDIR_DENTS)
		1169	req->int1 |= EIO_READDIR_CUSTOM2;
		1170
		1171	REQ_SEND;
		1172	}
		1173
		1174	void
1147	aio_unlink (pathname,callback=&PL_sv_undef)	1175	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1148	SV * pathname
1149	SV * callback
1150	ALIAS:	1176	ALIAS:
1151	aio_unlink = REQ_UNLINK	1177	aio_unlink = EIO_UNLINK
1152	aio_rmdir = REQ_RMDIR	1178	aio_rmdir = EIO_RMDIR
1153	aio_readdir = REQ_READDIR	1179	aio_readdir = EIO_READDIR
1154	PPCODE:	1180	PPCODE:
1155	{	1181	{
1156	dREQ;	1182	dREQ;
1157		1183
1158	req->type = ix;	1184	req->type = ix;
1159	req->data = newSVsv (pathname);	1185	req->sv1 = newSVsv (pathname);
1160	req->dataptr = SvPVbyte_nolen (req->data);	1186	req->ptr1 = SvPVbyte_nolen (req->sv1);
1161		1187
1162	REQ_SEND;	1188	REQ_SEND;
1163	}	1189	}
1164		1190
1165	void	1191	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1192	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1167	SV * oldpath
1168	SV * newpath
1169	SV * callback
1170	ALIAS:	1193	ALIAS:
1171	aio_link = REQ_LINK	1194	aio_link = EIO_LINK
1172	aio_symlink = REQ_SYMLINK	1195	aio_symlink = EIO_SYMLINK
1173	aio_rename = REQ_RENAME	1196	aio_rename = EIO_RENAME
1174	PPCODE:	1197	PPCODE:
1175	{	1198	{
1176	dREQ;	1199	dREQ;
1177		1200
1178	req->type = ix;	1201	req->type = ix;
1179	req->fh = newSVsv (oldpath);	1202	req->sv1 = newSVsv (oldpath);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	1203	req->ptr1 = SvPVbyte_nolen (req->sv1);
1181	req->data = newSVsv (newpath);	1204	req->sv2 = newSVsv (newpath);
1182	req->dataptr = SvPVbyte_nolen (req->data);	1205	req->ptr2 = SvPVbyte_nolen (req->sv2);
1183		1206
1184	REQ_SEND;	1207	REQ_SEND;
1185	}	1208	}
1186		1209
1187	void	1210	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	1211	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1189	double delay
1190	SV * callback
1191	PPCODE:	1212	PPCODE:
1192	{	1213	{
1193	dREQ;	1214	dREQ;
1194		1215
1195	req->type = REQ_SLEEP;	1216	req->type = EIO_MKNOD;
1196	req->fd = delay < 0. ? 0 : delay;	1217	req->sv1 = newSVsv (pathname);
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
1198		1219	req->int2 = (mode_t)mode;
		1220	req->offs = dev;
		1221
1199	REQ_SEND;	1222	REQ_SEND;
1200	}	1223	}
1201		1224
1202	void	1225	void
1203	aio_group (callback=&PL_sv_undef)	1226	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1204	SV * callback	1227	ALIAS:
1205	PROTOTYPE: ;$	1228	aio_mtouch = EIO_MTOUCH
		1229	aio_msync = EIO_MSYNC
1206	PPCODE:	1230	PPCODE:
1207	{	1231	{
		1232	STRLEN svlen;
		1233	char *svptr = SvPVbyte (data, svlen);
		1234	UV len = SvUV (length);
		1235
		1236	if (offset < 0)
		1237	offset += svlen;
		1238
		1239	if (offset < 0 || offset > svlen)
		1240	croak ("offset outside of scalar");
		1241
		1242	if (!SvOK (length) || len + offset > svlen)
		1243	len = svlen - offset;
		1244
		1245	{
		1246	dREQ;
		1247
		1248	req->type = ix;
		1249	req->sv2 = SvREFCNT_inc (data);
		1250	req->ptr2 = (char *)svptr + offset;
		1251	req->size = len;
		1252	req->int1 = flags;
		1253
		1254	REQ_SEND;
		1255	}
		1256	}
		1257
		1258	void
		1259	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1260	PPCODE:
		1261	{
		1262	STRLEN svlen;
		1263	char *svptr = SvPVbyte (data, svlen);
		1264	UV len = SvUV (length);
		1265
		1266	if (offset < 0)
		1267	offset += svlen;
		1268
		1269	if (offset < 0 || offset > svlen)
		1270	croak ("offset outside of scalar");
		1271
		1272	if (!SvOK (length) || len + offset > svlen)
		1273	len = svlen - offset;
		1274
		1275	{
		1276	dREQ;
		1277
		1278	req->type = EIO_MLOCK;
		1279	req->sv2 = SvREFCNT_inc (data);
		1280	req->ptr2 = (char *)svptr + offset;
		1281	req->size = len;
		1282
		1283	REQ_SEND;
		1284	}
		1285	}
		1286
		1287	void
		1288	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = EIO_MLOCKALL;
		1294	req->int1 = flags;
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
		1300	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1301	PPCODE:
		1302	{
1208	dREQ;	1303	dREQ;
		1304
		1305	req->type = EIO_BUSY;
		1306	req->nv1 = delay < 0. ? 0. : delay;
		1307
		1308	REQ_SEND;
		1309	}
		1310
		1311	void
		1312	aio_group (SV *callback=&PL_sv_undef)
		1313	PPCODE:
		1314	{
		1315	dREQ;
		1316
1209	req->type = REQ_GROUP;	1317	req->type = EIO_GROUP;
		1318
1210	req_send (req);	1319	req_submit (req);
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1320	XPUSHs (req_sv (req, aio_grp_stash));
1212	}	1321	}
		1322
		1323	void
		1324	aio_nop (SV *callback=&PL_sv_undef)
		1325	ALIAS:
		1326	aio_nop = EIO_NOP
		1327	aio_sync = EIO_SYNC
		1328	PPCODE:
		1329	{
		1330	dREQ;
		1331
		1332	req->type = ix;
		1333
		1334	REQ_SEND;
		1335	}
		1336
		1337	int
		1338	aioreq_pri (int pri = 0)
		1339	CODE:
		1340	RETVAL = next_pri;
		1341	if (items > 0)
		1342	{
		1343	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1344	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1345	next_pri = pri;
		1346	}
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	void
		1351	aioreq_nice (int nice = 0)
		1352	CODE:
		1353	nice = next_pri - nice;
		1354	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1355	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1356	next_pri = nice;
1213		1357
1214	void	1358	void
1215	flush ()	1359	flush ()
1216	PROTOTYPE:
1217	CODE:	1360	CODE:
1218	while (nreqs)	1361	while (eio_nreqs ())
1219	{	1362	{
1220	poll_wait ();	1363	poll_wait ();
1221	poll_cb ();	1364	poll_cb ();
1222	}	1365	}
1223		1366
1224	void	1367	int
1225	poll()	1368	poll ()
1226	PROTOTYPE:
1227	CODE:	1369	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();	1370	poll_wait ();
1231	poll_cb ();	1371	RETVAL = poll_cb ();
1232	}
1233
1234	int
1235	poll_fileno()
1236	PROTOTYPE:
1237	CODE:
1238	RETVAL = respipe [0];
1239	OUTPUT:	1372	OUTPUT:
1240	RETVAL	1373	RETVAL
1241		1374
1242	int	1375	int
		1376	poll_fileno ()
		1377	CODE:
		1378	RETVAL = s_epipe_fd (&respipe);
		1379	OUTPUT:
		1380	RETVAL
		1381
		1382	int
1243	poll_cb(...)	1383	poll_cb (...)
1244	PROTOTYPE:	1384	PROTOTYPE:
1245	CODE:	1385	CODE:
1246	RETVAL = poll_cb ();	1386	RETVAL = poll_cb ();
1247	OUTPUT:	1387	OUTPUT:
1248	RETVAL	1388	RETVAL
1249		1389
1250	void	1390	void
1251	poll_wait()	1391	poll_wait ()
1252	PROTOTYPE:
1253	CODE:	1392	CODE:
1254	if (nreqs)
1255	poll_wait ();	1393	poll_wait ();
1256		1394
1257	int	1395	int
1258	nreqs()	1396	nreqs ()
1259	PROTOTYPE:
1260	CODE:	1397	CODE:
1261	RETVAL = nreqs;	1398	RETVAL = eio_nreqs ();
1262	OUTPUT:	1399	OUTPUT:
1263	RETVAL	1400	RETVAL
1264		1401
		1402	int
		1403	nready ()
		1404	CODE:
		1405	RETVAL = eio_nready ();
		1406	OUTPUT:
		1407	RETVAL
		1408
		1409	int
		1410	npending ()
		1411	CODE:
		1412	RETVAL = eio_npending ();
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	int
		1417	nthreads ()
		1418	CODE:
		1419	RETVAL = eio_nthreads ();
		1420	OUTPUT:
		1421	RETVAL
		1422
		1423	int
		1424	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1425	CODE:
		1426	RETVAL = posix_fadvise (fh, offset, length, advice);
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	ssize_t
		1431	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1432	CODE:
		1433	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1434	OUTPUT:
		1435	RETVAL
		1436
		1437	void
		1438	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1439	PPCODE:
		1440	sv_unmagic (scalar, MMAP_MAGIC);
		1441	{
		1442	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1443	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1444	if (addr == (void *)-1)
		1445	XSRETURN_NO;
		1446
		1447	sv_force_normal (scalar);
		1448
		1449	/* we store the length in mg_obj, as namlen is I32 :/ */
		1450	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1451	->mg_obj = (SV *)length;
		1452
		1453	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1454
		1455	if (!(prot & PROT_WRITE))
		1456	SvREADONLY_on (scalar);
		1457
		1458	if (SvLEN (scalar))
		1459	Safefree (SvPVX (scalar));
		1460
		1461	SvPVX (scalar) = (char *)addr;
		1462	SvCUR_set (scalar, length);
		1463	SvLEN_set (scalar, 0);
		1464	SvPOK_only (scalar);
		1465
		1466	XSRETURN_YES;
		1467	}
		1468
		1469	void
		1470	munmap (SV *scalar)
		1471	CODE:
		1472	sv_unmagic (scalar, MMAP_MAGIC);
		1473
		1474	int
		1475	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1476	ALIAS:
		1477	mprotect = 1
		1478	CODE:
		1479	{
		1480	STRLEN svlen;
		1481	void *addr = SvPVbyte (scalar, svlen);
		1482	size_t len = SvUV (length);
		1483
		1484	if (offset < 0)
		1485	offset += svlen;
		1486
		1487	if (offset < 0 || offset > svlen)
		1488	croak ("offset outside of scalar");
		1489
		1490	if (!SvOK (length) || len + offset > svlen)
		1491	len = svlen - offset;
		1492
		1493	addr = (void *)(((intptr_t)addr) + offset);
		1494	eio_page_align (&addr, &len);
		1495
		1496	switch (ix)
		1497	{
		1498	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1499	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1500	}
		1501	}
		1502	OUTPUT:
		1503	RETVAL
		1504
		1505	int
		1506	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1507	CODE:
		1508	{
		1509	STRLEN svlen;
		1510	void *addr = SvPVbyte (scalar, svlen);
		1511	size_t len = SvUV (length);
		1512
		1513	if (offset < 0)
		1514	offset += svlen;
		1515
		1516	if (offset < 0 || offset > svlen)
		1517	croak ("offset outside of scalar");
		1518
		1519	if (!SvOK (length) || len + offset > svlen)
		1520	len = svlen - offset;
		1521
		1522	addr = (void *)(((intptr_t)addr) + offset);
		1523	eio_page_align (&addr, &len);
		1524	#if _POSIX_MEMLOCK
		1525	RETVAL = munlock (addr, len);
		1526	#else
		1527	RETVAL = ((errno = ENOSYS), -1);
		1528	#endif
		1529	}
		1530	OUTPUT:
		1531	RETVAL
		1532
		1533	int
		1534	munlockall ()
		1535	CODE:
		1536	#if _POSIX_MEMLOCK
		1537	munlockall ();
		1538	#else
		1539	RETVAL = -1;
		1540	errno = ENOSYS;
		1541	#endif
		1542	OUTPUT:
		1543	RETVAL
		1544
		1545	void _on_next_submit (SV *cb)
		1546	CODE:
		1547	SvREFCNT_dec (on_next_submit);
		1548	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1549
1265	PROTOTYPES: DISABLE	1550	PROTOTYPES: DISABLE
1266		1551
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1552	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1553
1269	void	1554	void
1270	cancel (aio_req_ornot req)	1555	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1556	CODE:
1273	req_cancel (req);	1557	eio_cancel (req);
		1558
		1559	void
		1560	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	if (GIMME_V != G_VOID)
		1564	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1565
		1566	if (items > 1)
		1567	{
		1568	SV *cb_cv =get_cb (callback);
		1569
		1570	SvREFCNT_dec (req->callback);
		1571	req->callback = SvREFCNT_inc (cb_cv);
		1572	}
		1573	}
1274		1574
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1575	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1576
1277	void	1577	void
1278	add (aio_req grp, ...)	1578	add (aio_req grp, ...)
1279	PPCODE:	1579	PPCODE:
1280	{	1580	{
1281	int i;	1581	int i;
1282		1582
1283	if (grp->fd == 2)	1583	if (grp->int1 == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1584	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1585
1286	for (i = 1; i < items; ++i )	1586	for (i = 1; i < items; ++i )
1287	{	1587	{
		1588	aio_req req;
		1589
1288	if (GIMME_V != G_VOID)	1590	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1591	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1592
1291	aio_req req = SvAIO_REQ (ST (i));	1593	req = SvAIO_REQ (ST (i));
1292		1594
1293	if (req)	1595	if (req)
1294	{	1596	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	}	1597	}
1307	}	1598	}
1308		1599
1309	void	1600	void
1310	lock (aio_req grp)	1601	cancel_subs (aio_req_ornot req)
1311	CODE:	1602	CODE:
1312	++grp->length;	1603	req_cancel_subs (req);
1313		1604
1314	void	1605	void
1315	unlock (aio_req grp)	1606	result (aio_req grp, ...)
		1607	CODE:
		1608	{
		1609	int i;
		1610	AV *av;
		1611
		1612	grp->errorno = errno;
		1613
		1614	av = newAV ();
		1615	av_extend (av, items - 1);
		1616
		1617	for (i = 1; i < items; ++i )
		1618	av_push (av, newSVsv (ST (i)));
		1619
		1620	SvREFCNT_dec (grp->sv1);
		1621	grp->sv1 = (SV *)av;
		1622	}
		1623
		1624	void
		1625	errno (aio_req grp, int errorno = errno)
		1626	CODE:
		1627	grp->errorno = errorno;
		1628
		1629	void
		1630	limit (aio_req grp, int limit)
1316	CODE:	1631	CODE:
1317	aio_grp_dec (grp);	1632	eio_grp_limit (grp, limit);
1318		1633
1319	void	1634	void
1320	feeder_limit (aio_req grp, int limit)	1635	feed (aio_req grp, SV *callback=&PL_sv_undef)
1321	CODE:	1636	CODE:
1322	grp->fd2 = limit;
1323	aio_grp_feed (grp);
1324
1325	void
1326	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1327	CODE:
1328	{	1637	{
1329	SvREFCNT_dec (grp->fh2);	1638	SvREFCNT_dec (grp->sv2);
1330	grp->fh2 = newSVsv (callback);	1639	grp->sv2 = newSVsv (callback);
		1640	grp->feed = aio_grp_feed;
1331		1641
1332	if (grp->fd2 <= 0)	1642	if (grp->int2 <= 0)
1333	grp->fd2 = 2;	1643	grp->int2 = 2;
1334		1644
1335	aio_grp_feed (grp);	1645	eio_grp_limit (grp, grp->int2);
1336	}	1646	}
1337		1647

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