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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.171 by root, Wed Aug 4 17:16:19 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 MCL_CURRENT
		215	# define MCL_CURRENT 0
		216	#endif
		217	#ifndef MCL_FUTURE
		218	# define MCL_FUTURE 0
		219	#endif
		220
		221	#ifndef MAP_ANONYMOUS
		222	# ifdef MAP_ANON
		223	# define MAP_ANONYMOUS MAP_ANON
34	# else	224	# else
35	# error sendfile support requested but not available	225	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	226	# endif
37	#endif	227	#endif
38		228	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	229	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	230	#endif
43		231	#ifndef MAP_LOCKED
44	#if __ia64	232	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	233	#endif
		234	#ifndef MAP_NORESERVE
		235	# define MAP_NORESERVE 0
		236	#endif
		237	#ifndef MAP_POPULATE
		238	# define MAP_POPULATE 0
		239	#endif
		240	#ifndef MAP_NONBLOCK
		241	# define MAP_NONBLOCK 0
		242	#endif
		243
		244	#ifndef PAGESIZE
		245	# define PAGESIZE sysconf (_SC_PAGESIZE)
		246	#endif
		247
		248	static int req_invoke (eio_req *req);
		249	#define EIO_FINISH(req) req_invoke (req)
		250	static void req_destroy (eio_req *grp);
		251	#define EIO_DESTROY(req) req_destroy (req)
49		252
50	enum {	253	enum {
51	REQ_QUIT,	254	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	};	255	};
63		256
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	257	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		258
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;	259	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	260	typedef eio_req *aio_req_ornot;
93		261
94	static int started, wanted;	262	static SV *on_next_submit;
95	static volatile int nreqs;	263	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	264	static int max_outstanding;
97	static int respipe [2];
98		265
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	266	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		267
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	268	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	269	static void req_cancel (aio_req req);
		270
		271	static void want_poll (void)
		272	{
		273	/* write a dummy byte to the pipe so fh becomes ready */
		274	s_epipe_signal (&respipe);
		275	}
		276
		277	static void done_poll (void)
		278	{
		279	/* read any signals sent by the worker threads */
		280	s_epipe_drain (&respipe);
		281	}
107		282
108	/* must be called at most once */	283	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	284	static SV *req_sv (aio_req req, HV *stash)
110	{	285	{
		286	if (!req->self)
		287	{
111	req->self = (SV *)newHV ();	288	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	289	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		290	}
113		291
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	292	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
115	}	293	}
116		294
117	static aio_req SvAIO_REQ (SV *sv)	295	static aio_req SvAIO_REQ (SV *sv)
118	{	296	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	297	MAGIC *mg;
		298
		299	if (!SvROK (sv)
		300	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		301	&& SvSTASH (SvRV (sv)) != aio_req_stash
		302	&& !sv_derived_from (sv, "IO::AIO::REQ")))
120	croak ("object of class " AIO_REQ_KLASS " expected");	303	croak ("object of class IO::AIO::REQ expected");
121		304
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	305	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		306
124	return mg ? (aio_req)mg->mg_ptr : 0;	307	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	308	}
126		309
127	static void poll_wait ()	310	static void aio_grp_feed (aio_req grp)
128	{	311	{
129	if (nreqs && !ress)	312	if (grp->sv2 && SvOK (grp->sv2))
130	{	313	{
131	fd_set rfd;	314	dSP;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		315
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	316	ENTER;
		317	SAVETMPS;
		318	PUSHMARK (SP);
		319	XPUSHs (req_sv (grp, aio_grp_stash));
		320	PUTBACK;
		321	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		322	SPAGAIN;
		323	FREETMPS;
		324	LEAVE;
136	}	325	}
137	}	326	}
138		327
139	static void req_invoke (aio_req req)	328	static void req_submit (eio_req *req)
140	{	329	{
141	dSP;	330	eio_submit (req);
142	int errorno = errno;
143		331
144	if (req->cancelled || !SvOK (req->callback))	332	if (expect_false (on_next_submit))
145	return;
146
147	errno = req->errorno;
148
149	ENTER;
150	PUSHMARK (SP);
151	EXTEND (SP, 1);
152
153	switch (req->type)
154	{	333	{
155	case REQ_READDIR:	334	dSP;
		335	SV *cb = sv_2mortal (on_next_submit);
		336
		337	on_next_submit = 0;
		338
		339	PUSHMARK (SP);
		340	PUTBACK;
		341	call_sv (cb, G_DISCARD | G_EVAL);
		342	}
		343	}
		344
		345	static int req_invoke (eio_req *req)
		346	{
		347	if (req->flags & FLAG_SV2_RO_OFF)
		348	SvREADONLY_off (req->sv2);
		349
		350	if (!EIO_CANCELLED (req) && req->callback)
		351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
		356	ENTER;
		357	SAVETMPS;
		358	PUSHMARK (SP);
		359	EXTEND (SP, 1);
		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
156	{	363	{
157	SV *rv = &PL_sv_undef;	364	sv_result = sv_result_cache; sv_result_cache = 0;
		365	SvIV_set (sv_result, req->result);
		366	}
		367	else
		368	{
		369	sv_result = newSViv (req->result);
		370	SvREADONLY_on (sv_result);
		371	}
158		372
159	if (req->result >= 0)	373	switch (req->type)
		374	{
		375	case EIO_READDIR:
160	{	376	{
161	char *buf = req->data2ptr;	377	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		378
164	while (req->result)	379	if (req->result >= 0)
165	{	380	{
		381	int i;
		382	char *names = (char *)req->ptr2;
		383	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	384	AV *av = newAV ();
167		385
168	av_push (av, sv);	386	av_extend (av, req->result - 1);
		387
		388	for (i = 0; i < req->result; ++i)
		389	{
		390	if (req->int1 & EIO_READDIR_DENTS)
		391	{
		392	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM2)
		395	{
		396	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		397	AV *avent = newAV ();
		398
		399	av_extend (avent, 2);
		400
		401	if (!sv_type [ent->type])
		402	{
		403	sv_type [ent->type] = newSViv (ent->type);
		404	SvREADONLY_on (sv_type [ent->type]);
		405	}
		406
		407	av_store (avent, 0, namesv);
		408	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		409	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		410
		411	av_store (av, i, newRV_noinc ((SV *)avent));
		412	}
		413	else
		414	av_store (av, i, namesv);
		415
		416	++ent;
		417	}
		418	else
		419	{
		420	SV *name = newSVpv (names, 0);
		421	av_store (av, i, name);
169	buf += SvCUR (sv) + 1;	422	names += SvCUR (name) + 1;
170	req->result--;	423	}
		424	}
		425
		426	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	427	}
172		428
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	429	PUSHs (rv);
		430
		431	if (req->int1 & EIO_READDIR_CUSTOM1)
		432	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
174	}	433	}
		434	break;
175		435
		436	case EIO_OPEN:
		437	{
		438	/* convert fd to fh */
		439	SV *fh = &PL_sv_undef;
		440
		441	if (req->result >= 0)
		442	{
		443	GV *gv = (GV *)sv_newmortal ();
		444	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		445	char sym [64];
		446	int symlen;
		447
		448	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		449	gv_init (gv, aio_stash, sym, symlen, 0);
		450
		451	symlen = snprintf (
		452	sym,
		453	sizeof (sym),
		454	"%s&=%d",
		455	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		456	(int)req->result
		457	);
		458
		459	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		460	fh = (SV *)gv;
		461	}
		462
		463	PUSHs (fh);
		464	}
		465	break;
		466
		467	case EIO_STATVFS:
		468	case EIO_FSTATVFS:
		469	{
		470	SV *rv = &PL_sv_undef;
		471
		472	if (req->result >= 0)
		473	{
		474	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		475	HV *hv = newHV ();
		476
		477	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		478
		479	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		480	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		481	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		482	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		483	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		484	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		485	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		486	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		487	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		488	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		489	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		490	}
		491
176	PUSHs (rv);	492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	if (req->result > 0)
		517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		518	break;
		519
		520	case EIO_STAT:
		521	case EIO_LSTAT:
		522	case EIO_FSTAT:
		523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		524	PL_laststatval = req->result;
		525	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		526	PUSHs (sv_result);
		527	break;
		528
		529	case EIO_READ:
		530	{
		531	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		532	*SvEND (req->sv2) = 0;
		533	SvPOK_only (req->sv2);
		534	SvSETMAGIC (req->sv2);
		535	PUSHs (sv_result);
		536	}
		537	break;
		538
		539	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		540	if (req->result > 0)
		541	SvIV_set (sv_result, 0);
		542	/* FALLTHROUGH */
		543
		544	default:
		545	PUSHs (sv_result);
		546	break;
177	}	547	}
178	break;
179		548
180	case REQ_OPEN:	549	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		550
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	551	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	552	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	553	SPAGAIN;
189		554
190	fh = SvREFCNT_inc (POPs);	555	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		556	SvREFCNT_dec (sv_result);
		557	else
		558	sv_result_cache = sv_result;
191		559
192	PUSHMARK (SP);	560	FREETMPS;
193	XPUSHs (sv_2mortal (fh));	561	LEAVE;
194	}
195	break;
196		562
197	case REQ_GROUP:	563	PUTBACK;
198	if (req->data)
199	{
200	int i;
201	AV *av = (AV *)req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}	564	}
216		565
217		566	return !!SvTRUE (ERRSV);
218	PUTBACK;
219	call_sv (req->callback, G_VOID | G_EVAL);
220	SPAGAIN;
221
222	if (SvTRUE (ERRSV))
223	{
224	req_free (req);
225	croak (0);
226	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	567	}
232		568
233	static void req_free (aio_req req)	569	static void req_destroy (aio_req req)
234	{	570	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}
248	}
249
250	if (req->self)	571	if (req->self)
251	{	572	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	573	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	574	SvREFCNT_dec (req->self);
254	}	575	}
255		576
256	if (req->data)
257	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	577	SvREFCNT_dec (req->sv1);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	578	SvREFCNT_dec (req->sv2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	579	SvREFCNT_dec (req->callback);
270
271	if (req->type == REQ_READDIR && req->result >= 0)
272	free (req->data2ptr);
273		580
274	Safefree (req);	581	Safefree (req);
275	}	582	}
276		583
277	static void req_cancel (aio_req req)	584	static void req_cancel_subs (aio_req grp)
278	{	585	{
279	req->cancelled = 1;	586	aio_req sub;
280		587
281	if (req->type == REQ_GROUP)	588	if (grp->type != EIO_GROUP)
		589	return;
		590
		591	SvREFCNT_dec (grp->sv2);
		592	grp->sv2 = 0;
		593
		594	eio_grp_cancel (grp);
		595	}
		596
		597	static void
		598	create_respipe (void)
		599	{
		600	if (s_epipe_renew (&respipe))
		601	croak ("IO::AIO: unable to initialize result pipe");
		602	}
		603
		604	static void poll_wait (void)
		605	{
		606	while (eio_nreqs ())
282	{	607	{
283	aio_req sub;	608	int size;
284		609
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	610	X_LOCK (reslock);
286	req_cancel (sub);	611	size = res_queue.size;
		612	X_UNLOCK (reslock);
		613
		614	if (size)
		615	return;
		616
		617	etp_maybe_start_thread ();
		618
		619	s_epipe_wait (&respipe);
287	}	620	}
288	}	621	}
289		622
290	static int poll_cb ()	623	static int poll_cb (void)
291	{	624	{
292	dSP;
293	int count = 0;
294	int do_croak = 0;
295	aio_req req;
296
297	for (;;)	625	for (;;)
298	{	626	{
299	pthread_mutex_lock (&reslock);	627	int res = eio_poll ();
300	req = ress;
301		628
302	if (req)	629	if (res > 0)
303	{
304	ress = req->next;
305
306	if (!ress)
307	{
308	/* read any signals sent by the worker threads */
309	char buf [32];
310	while (read (respipe [0], buf, 32) == 32)
311	;
312
313	rese = 0;
314	}
315	}
316
317	pthread_mutex_unlock (&reslock);
318
319	if (!req)
320	break;	630	croak (0);
321		631
322	nreqs--;	632	if (!max_outstanding || max_outstanding > eio_nreqs ())
		633	return res;
323		634
324	if (req->type == REQ_QUIT)	635	poll_wait ();
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{
328	req->fd = 1; /* mark request as delayed */
329	continue;
330	}
331	else
332	{
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}	636	}
353
354	return count;
355	}	637	}
356		638
357	static void *aio_proc(void *arg);
358
359	static void start_thread (void)	639	static void atfork_child (void)
360	{	640	{
361	sigset_t fullsigset, oldsigset;	641	create_respipe ();
362	pthread_t tid;
363	pthread_attr_t attr;
364
365	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368
369	sigfillset (&fullsigset);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
373	started++;
374
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
376	}
377
378	static void req_send (aio_req req)
379	{
380	while (started < wanted && nreqs >= started)
381	start_thread ();
382
383	nreqs++;
384
385	pthread_mutex_lock (&reqlock);
386
387	req->next = 0;
388
389	if (reqe)
390	{
391	reqe->next = req;
392	reqe = req;
393	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}
411
412	static void end_thread (void)
413	{
414	aio_req req;
415	Newz (0, req, 1, aio_cb);
416	req->type = REQ_QUIT;
417
418	req_send (req);
419	}
420
421	static void min_parallel (int nthreads)
422	{
423	if (wanted < nthreads)
424	wanted = nthreads;
425	}
426
427	static void max_parallel (int nthreads)
428	{
429	int cur = started;
430
431	if (wanted > nthreads)
432	wanted = nthreads;
433
434	while (cur > wanted)
435	{
436	end_thread ();
437	cur--;
438	}
439
440	while (started > wanted)
441	{
442	poll_wait ();
443	poll_cb ();
444	}
445	}
446
447	static void create_pipe ()
448	{
449	if (pipe (respipe))
450	croak ("unable to initialize result pipe");
451
452	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
453	croak ("cannot set result pipe to nonblocking mode");
454
455	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
456	croak ("cannot set result pipe to nonblocking mode");
457	}	642	}
458		643
459	/*****************************************************************************/	644	/*****************************************************************************/
460	/* work around various missing functions */
461		645
462	#if !HAVE_PREADWRITE	646	#if !_POSIX_MAPPED_FILES
463	# define pread aio_pread	647	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
464	# define pwrite aio_pwrite	648	# define munmap(addr,length) (errno = ENOSYS, -1)
465		649	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
466	/*
467	* make our pread/pwrite safe against themselves, but not against
468	* normal read/write by using a mutex. slows down execution a lot,
469	* but that's your problem, not mine.
470	*/
471	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
472
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
474	{
475	ssize_t res;
476	off_t ooffset;
477
478	pthread_mutex_lock (&preadwritelock);
479	ooffset = lseek (fd, 0, SEEK_CUR);
480	lseek (fd, offset, SEEK_SET);
481	res = read (fd, buf, count);
482	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);
484
485	return res;
486	}
487
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
489	{
490	ssize_t res;
491	off_t ooffset;
492
493	pthread_mutex_lock (&preadwritelock);
494	ooffset = lseek (fd, 0, SEEK_CUR);
495	lseek (fd, offset, SEEK_SET);
496	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);
499
500	return res;
501	}
502	#endif
503
504	#if !HAVE_FDATASYNC
505	# define fdatasync fsync
506	#endif
507
508	#if !HAVE_READAHEAD
509	# define readahead aio_readahead
510
511	static ssize_t readahead (int fd, off_t offset, size_t count)
512	{
513	char readahead_buf[4096];
514
515	while (count > 0)
516	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
518
519	pread (fd, readahead_buf, len, offset);
520	offset += len;
521	count -= len;
522	}
523
524	errno = 0;
525	}
526	#endif
527
528	#if !HAVE_READDIR_R
529	# define readdir_r aio_readdir_r
530
531	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
532
533	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
534	{
535	struct dirent *e;
536	int errorno;
537
538	pthread_mutex_lock (&readdirlock);
539
540	e = readdir (dirp);
541	errorno = errno;
542
543	if (e)
544	{
545	*res = ent;
546	strcpy (ent->d_name, e->d_name);
547	}
548	else
549	*res = 0;
550
551	pthread_mutex_unlock (&readdirlock);
552
553	errno = errorno;
554	return e ? 0 : -1;
555	}
556	#endif
557
558	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
560	{
561	ssize_t res;
562
563	if (!count)
564	return 0;
565
566	#if HAVE_SENDFILE
567	# if __linux
568	res = sendfile (ofd, ifd, &offset, count);
569
570	# elif __freebsd
571	/*
572	* Of course, the freebsd sendfile is a dire hack with no thoughts
573	* wasted on making it similar to other I/O functions.
574	*/
575	{
576	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578
579	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
581	res = sbytes;
582	}
583
584	# elif __hpux
585	res = sendfile (ofd, ifd, offset, count, 0, 0);
586
587	# elif __solaris
588	{
589	struct sendfilevec vec;
590	size_t sbytes;
591
592	vec.sfv_fd = ifd;
593	vec.sfv_flag = 0;
594	vec.sfv_off = offset;
595	vec.sfv_len = count;
596
597	res = sendfilev (ofd, &vec, 1, &sbytes);
598
599	if (res < 0 && sbytes)
600	res = sbytes;
601	}
602
603	# endif	650	#endif
604	#else
605	res = -1;
606	errno = ENOSYS;
607	#endif
608		651
609	if (res < 0	652	#define MMAP_MAGIC PERL_MAGIC_ext
610	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
611	#if __solaris
612	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
613	#endif
614	)
615	)
616	{
617	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];
619	res = 0;
620		653
621	while (count)	654	static int
622	{	655	mmap_free (pTHX_ SV *sv, MAGIC *mg)
623	ssize_t cnt;
624
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
626
627	if (cnt <= 0)
628	{
629	if (cnt && !res) res = -1;
630	break;
631	}
632
633	cnt = write (ofd, buf, cnt);
634
635	if (cnt <= 0)
636	{
637	if (cnt && !res) res = -1;
638	break;
639	}
640
641	offset += cnt;
642	res += cnt;
643	count -= cnt;
644	}
645	}
646
647	return res;
648	}
649
650	/* read a full directory */
651	static int scandir_ (const char *path, void **namesp)
652	{	656	{
653	DIR *dirp = opendir (path);	657	int old_errno = errno;
654	union	658	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
655	{
656	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;
659	struct dirent *entp;
660	char *name, *names;
661	int memlen = 4096;
662	int memofs = 0;
663	int res = 0;
664	int errorno;
665
666	if (!dirp)
667	return -1;
668
669	names = malloc (memlen);
670
671	for (;;)
672	{
673	errno = 0, readdir_r (dirp, &u.d, &entp);
674
675	if (!entp)
676	break;
677
678	name = entp->d_name;
679
680	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
681	{
682	int len = strlen (name) + 1;
683
684	res++;
685
686	while (memofs + len > memlen)
687	{
688	memlen *= 2;
689	names = realloc (names, memlen);
690	if (!names)
691	break;
692	}
693
694	memcpy (names + memofs, name, len);
695	memofs += len;
696	}
697	}
698
699	errorno = errno;	659	errno = old_errno;
700	closedir (dirp);
701		660
702	if (errorno)	661	mg->mg_obj = 0; /* just in case */
703	{
704	free (names);
705	errno = errorno;
706	res = -1;
707	}
708		662
709	*namesp = (void *)names;	663	SvREADONLY_off (sv);
		664
		665	if (SvPVX (sv) != mg->mg_ptr)
		666	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		667
		668	SvCUR_set (sv, 0);
		669	SvPVX (sv) = 0;
		670	SvOK_off (sv);
		671
710	return res;	672	return 0;
711	}	673	}
		674
		675	static MGVTBL mmap_vtbl = {
		676	0, 0, 0, 0, mmap_free
		677	};
712		678
713	/*****************************************************************************/	679	/*****************************************************************************/
714		680
715	static void *aio_proc (void *thr_arg)	681	static SV *
		682	get_cb (SV *cb_sv)
716	{	683	{
717	aio_req req;	684	SvGETMAGIC (cb_sv);
718	int type;	685	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
719
720	do
721	{
722	pthread_mutex_lock (&reqlock);
723
724	for (;;)
725	{
726	req = reqs;
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733
734	if (req)
735	break;
736
737	pthread_cond_wait (&reqwait, &reqlock);
738	}
739
740	pthread_mutex_unlock (&reqlock);
741
742	errno = 0; /* strictly unnecessary */
743
744	if (!req->cancelled)
745	switch (req->type)
746	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
752
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756
757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
758	case REQ_CLOSE: req->result = close (req->fd); break;
759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
768
769	case REQ_SLEEP:
770	{
771	struct timeval tv;
772
773	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;
775
776	req->result = select (0, 0, 0, 0, &tv);
777	}
778
779	case REQ_QUIT:
780	break;
781
782	default:
783	req->result = ENOSYS;
784	break;
785	}
786
787	req->errorno = errno;
788
789	pthread_mutex_lock (&reslock);
790
791	req->next = 0;
792
793	if (rese)
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);
804	}
805
806	pthread_mutex_unlock (&reslock);
807	}
808	while (type != REQ_QUIT);
809
810	return 0;
811	}
812
813	/*****************************************************************************/
814
815	static void atfork_prepare (void)
816	{
817	pthread_mutex_lock (&reqlock);
818	pthread_mutex_lock (&reslock);
819	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);
821	#endif
822	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);
824	#endif
825	}
826
827	static void atfork_parent (void)
828	{
829	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);
831	#endif
832	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);
834	#endif
835	pthread_mutex_unlock (&reslock);
836	pthread_mutex_unlock (&reqlock);
837	}
838
839	static void atfork_child (void)
840	{
841	aio_req prv;
842
843	started = 0;
844
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862
863	close (respipe [0]);
864	close (respipe [1]);
865	create_pipe ();
866
867	atfork_parent ();
868	}	686	}
869		687
870	#define dREQ \	688	#define dREQ \
		689	SV *cb_cv; \
871	aio_req req; \	690	aio_req req; \
		691	int req_pri = next_pri; \
		692	next_pri = EIO_PRI_DEFAULT; \
872	\	693	\
873	if (SvOK (callback) && !SvROK (callback)) \	694	cb_cv = get_cb (callback); \
874	croak ("callback must be undef or of reference type"); \
875	\	695	\
876	Newz (0, req, 1, aio_cb); \	696	Newz (0, req, 1, eio_req); \
877	if (!req) \	697	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	698	croak ("out of memory during eio_req allocation"); \
879	\	699	\
880	req->callback = newSVsv (callback)	700	req->callback = SvREFCNT_inc (cb_cv); \
		701	req->pri = req_pri
881		702
882	#define REQ_SEND \	703	#define REQ_SEND \
		704	PUTBACK; \
883	req_send (req); \	705	req_submit (req); \
		706	SPAGAIN; \
884	\	707	\
885	if (GIMME_V != G_VOID) \	708	if (GIMME_V != G_VOID) \
886	XPUSHs (req_sv (req, AIO_REQ_KLASS));	709	XPUSHs (req_sv (req, aio_req_stash));
887		710
888	MODULE = IO::AIO PACKAGE = IO::AIO	711	MODULE = IO::AIO PACKAGE = IO::AIO
889		712
890	PROTOTYPES: ENABLE	713	PROTOTYPES: ENABLE
891		714
892	BOOT:	715	BOOT:
893	{	716	{
		717	static const struct {
		718	const char *name;
		719	IV iv;
		720	} *civ, const_iv[] = {
		721	# define const_niv(name, value) { # name, (IV) value },
		722	# define const_iv(name) { # name, (IV) name },
		723	# define const_eio(name) { # name, (IV) EIO_ ## name },
		724	const_iv (EXDEV)
		725	const_iv (ENOSYS)
		726	const_iv (O_RDONLY)
		727	const_iv (O_WRONLY)
		728	const_iv (O_RDWR)
		729	const_iv (O_CREAT)
		730	const_iv (O_TRUNC)
		731	const_iv (O_EXCL)
		732	const_iv (O_APPEND)
		733	#ifndef _WIN32
		734	const_iv (S_IFIFO)
		735	#endif
		736	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		737	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		738	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		739	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		740	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		741	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		742
		743	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		744	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		745	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		746	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		747	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		748
		749	const_iv (ST_RDONLY)
		750	const_iv (ST_NOSUID)
		751	const_iv (ST_NODEV)
		752	const_iv (ST_NOEXEC)
		753	const_iv (ST_SYNCHRONOUS)
		754	const_iv (ST_MANDLOCK)
		755	const_iv (ST_WRITE)
		756	const_iv (ST_APPEND)
		757	const_iv (ST_IMMUTABLE)
		758	const_iv (ST_NOATIME)
		759	const_iv (ST_NODIRATIME)
		760	const_iv (ST_RELATIME)
		761
		762	const_iv (PROT_NONE)
		763	const_iv (PROT_EXEC)
		764	const_iv (PROT_READ)
		765	const_iv (PROT_WRITE)
		766
		767	/*const_iv (MAP_FIXED)*/
		768	const_iv (MAP_PRIVATE)
		769	const_iv (MAP_SHARED)
		770	const_iv (MAP_ANONYMOUS)
		771
		772	/* linuxish */
		773	const_iv (MAP_HUGETLB)
		774	const_iv (MAP_LOCKED)
		775	const_iv (MAP_NORESERVE)
		776	const_iv (MAP_POPULATE)
		777	const_iv (MAP_NONBLOCK)
		778
		779	const_iv (MCL_FUTURE)
		780	const_iv (MCL_CURRENT)
		781
		782	const_eio (MS_ASYNC)
		783	const_eio (MS_INVALIDATE)
		784	const_eio (MS_SYNC)
		785
		786	const_eio (MT_MODIFY)
		787
		788	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		789	const_eio (SYNC_FILE_RANGE_WRITE)
		790	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		791
		792	const_eio (READDIR_DENTS)
		793	const_eio (READDIR_DIRS_FIRST)
		794	const_eio (READDIR_STAT_ORDER)
		795	const_eio (READDIR_FOUND_UNKNOWN)
		796
		797	const_eio (DT_UNKNOWN)
		798	const_eio (DT_FIFO)
		799	const_eio (DT_CHR)
		800	const_eio (DT_DIR)
		801	const_eio (DT_BLK)
		802	const_eio (DT_REG)
		803	const_eio (DT_LNK)
		804	const_eio (DT_SOCK)
		805	const_eio (DT_WHT)
		806	};
		807
894	HV *stash = gv_stashpv ("IO::AIO", 1);	808	aio_stash = gv_stashpv ("IO::AIO" , 1);
895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	809	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	810	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
898		811
		812	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		813	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		814
		815	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		816
899	create_pipe ();	817	create_respipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}
902		818
		819	if (eio_init (want_poll, done_poll) < 0)
		820	croak ("IO::AIO: unable to initialise eio library");
		821
		822	/* atfork child called in fifo order, so before eio's handler */
		823	X_THREAD_ATFORK (0, 0, atfork_child);
		824	}
		825
903	void	826	void
904	min_parallel (nthreads)	827	max_poll_reqs (int nreqs)
905	int nthreads
906	PROTOTYPE: $	828	PROTOTYPE: $
		829	CODE:
		830	eio_set_max_poll_reqs (nreqs);
907		831
908	void	832	void
909	max_parallel (nthreads)	833	max_poll_time (double nseconds)
910	int nthreads
911	PROTOTYPE: $	834	PROTOTYPE: $
912
913	int
914	max_outstanding (nreqs)
915	int nreqs
916	PROTOTYPE: $
917	CODE:	835	CODE:
918	RETVAL = max_outstanding;	836	eio_set_max_poll_time (nseconds);
		837
		838	void
		839	min_parallel (int nthreads)
		840	PROTOTYPE: $
		841	CODE:
		842	eio_set_min_parallel (nthreads);
		843
		844	void
		845	max_parallel (int nthreads)
		846	PROTOTYPE: $
		847	CODE:
		848	eio_set_max_parallel (nthreads);
		849
		850	void
		851	max_idle (int nthreads)
		852	PROTOTYPE: $
		853	CODE:
		854	eio_set_max_idle (nthreads);
		855
		856	void
		857	max_outstanding (int maxreqs)
		858	PROTOTYPE: $
		859	CODE:
919	max_outstanding = nreqs;	860	max_outstanding = maxreqs;
920		861
921	void	862	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	863	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
923	SV * pathname
924	int flags
925	int mode
926	SV * callback
927	PROTOTYPE: $$$;$	864	PROTOTYPE: $$$;$
928	PPCODE:	865	PPCODE:
929	{	866	{
930	dREQ;	867	dREQ;
931		868
932	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
933	req->data = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
934	req->dataptr = SvPVbyte_nolen (req->data);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
935	req->fd = flags;	872	req->int1 = flags;
936	req->mode = mode;	873	req->int2 = mode;
937		874
938	REQ_SEND;	875	REQ_SEND;
939	}	876	}
940		877
941	void	878	void
942	aio_close (fh,callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
943	SV * fh
944	SV * callback
945	PROTOTYPE: $;$	880	PROTOTYPE: $;$
946	ALIAS:	881	ALIAS:
947	aio_close = REQ_CLOSE
948	aio_fsync = REQ_FSYNC	882	aio_fsync = EIO_FSYNC
949	aio_fdatasync = REQ_FDATASYNC	883	aio_fdatasync = EIO_FDATASYNC
950	PPCODE:	884	PPCODE:
951	{	885	{
		886	int fd = s_fileno_croak (fh, 0);
952	dREQ;	887	dREQ;
953		888
954	req->type = ix;	889	req->type = ix;
955	req->fh = newSVsv (fh);	890	req->sv1 = newSVsv (fh);
956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	891	req->int1 = fd;
957		892
958	REQ_SEND (req);	893	REQ_SEND (req);
959	}	894	}
960		895
961	void	896	void
		897	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		898	PROTOTYPE: $$$$;$
		899	PPCODE:
		900	{
		901	int fd = s_fileno_croak (fh, 0);
		902	dREQ;
		903
		904	req->type = EIO_SYNC_FILE_RANGE;
		905	req->sv1 = newSVsv (fh);
		906	req->int1 = fd;
		907	req->offs = offset;
		908	req->size = nbytes;
		909	req->int2 = flags;
		910
		911	REQ_SEND (req);
		912	}
		913
		914	void
		915	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		916	PROTOTYPE: $;$
		917	PPCODE:
		918	{
		919	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		920	int fd = s_fileno_croak (fh, 0);
		921	dREQ;
		922
		923	if (close_pipe < 0)
		924	{
		925	int pipefd [2];
		926
		927	if (pipe (pipefd) < 0
		928	|| close (pipefd [1]) < 0
		929	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		930	abort (); /*D*/
		931
		932	close_pipe = pipefd [0];
		933	}
		934
		935	req->type = EIO_DUP2;
		936	req->int1 = close_pipe;
		937	req->sv2 = newSVsv (fh);
		938	req->int2 = fd;
		939
		940	REQ_SEND (req);
		941	}
		942
		943	void
962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	944	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
963	SV * fh
964	UV offset
965	UV length
966	SV * data
967	UV dataoffset
968	SV * callback
969	ALIAS:	945	ALIAS:
970	aio_read = REQ_READ	946	aio_read = EIO_READ
971	aio_write = REQ_WRITE	947	aio_write = EIO_WRITE
972	PROTOTYPE: $$$$$;$	948	PROTOTYPE: $$$$$;$
973	PPCODE:	949	PPCODE:
974	{	950	{
975	aio_req req;
976	STRLEN svlen;	951	STRLEN svlen;
		952	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
977	char *svptr = SvPVbyte (data, svlen);	953	char *svptr = SvPVbyte (data, svlen);
978		954	UV len = SvUV (length);
979	SvUPGRADE (data, SVt_PV);
980	SvPOK_on (data);
981		955
982	if (dataoffset < 0)	956	if (dataoffset < 0)
983	dataoffset += svlen;	957	dataoffset += svlen;
984		958
985	if (dataoffset < 0 || dataoffset > svlen)	959	if (dataoffset < 0 || dataoffset > svlen)
986	croak ("data offset outside of string");	960	croak ("dataoffset outside of data scalar");
987		961
988	if (ix == REQ_WRITE)	962	if (ix == EIO_WRITE)
989	{	963	{
990	/* write: check length and adjust. */	964	/* write: check length and adjust. */
991	if (length < 0 || length + dataoffset > svlen)	965	if (!SvOK (length) || len + dataoffset > svlen)
992	length = svlen - dataoffset;	966	len = svlen - dataoffset;
993	}	967	}
994	else	968	else
995	{	969	{
996	/* read: grow scalar as necessary */	970	/* read: check type and grow scalar as necessary */
		971	SvUPGRADE (data, SVt_PV);
997	svptr = SvGROW (data, length + dataoffset);	972	svptr = SvGROW (data, len + dataoffset + 1);
998	}	973	}
999
1000	if (length < 0)
1001	croak ("length must not be negative");
1002		974
1003	{	975	{
1004	dREQ;	976	dREQ;
1005		977
1006	req->type = ix;	978	req->type = ix;
1007	req->fh = newSVsv (fh);	979	req->sv1 = newSVsv (fh);
1008	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	980	req->int1 = fd;
1009	: IoOFP (sv_2io (fh)));	981	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1010	req->offset = offset;	982	req->size = len;
1011	req->length = length;
1012	req->data = SvREFCNT_inc (data);	983	req->sv2 = SvREFCNT_inc (data);
1013	req->dataptr = (char *)svptr + dataoffset;	984	req->ptr2 = (char *)svptr + dataoffset;
		985	req->stroffset = dataoffset;
1014		986
1015	if (!SvREADONLY (data))	987	if (!SvREADONLY (data))
1016	{	988	{
1017	SvREADONLY_on (data);	989	SvREADONLY_on (data);
1018	req->data2ptr = (void *)data;	990	req->flags |= FLAG_SV2_RO_OFF;
1019	}	991	}
1020		992
1021	REQ_SEND;	993	REQ_SEND;
1022	}	994	}
1023	}	995	}
1024		996
1025	void	997	void
		998	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		999	PROTOTYPE: $$;$
		1000	PPCODE:
		1001	{
		1002	SV *data;
		1003	dREQ;
		1004
		1005	req->type = EIO_READLINK;
		1006	req->sv1 = newSVsv (path);
		1007	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1008
		1009	REQ_SEND;
		1010	}
		1011
		1012	void
1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1013	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1027	SV * out_fh
1028	SV * in_fh
1029	UV in_offset
1030	UV length
1031	SV * callback
1032	PROTOTYPE: $$$$;$	1014	PROTOTYPE: $$$$;$
1033	PPCODE:	1015	PPCODE:
1034	{	1016	{
		1017	int ifd = s_fileno_croak (in_fh , 0);
		1018	int ofd = s_fileno_croak (out_fh, 1);
1035	dREQ;	1019	dREQ;
1036		1020
1037	req->type = REQ_SENDFILE;	1021	req->type = EIO_SENDFILE;
1038	req->fh = newSVsv (out_fh);	1022	req->sv1 = newSVsv (out_fh);
1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1023	req->int1 = ofd;
1040	req->fh2 = newSVsv (in_fh);	1024	req->sv2 = newSVsv (in_fh);
1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1025	req->int2 = ifd;
1042	req->offset = in_offset;	1026	req->offs = in_offset;
1043	req->length = length;	1027	req->size = length;
1044		1028
1045	REQ_SEND;	1029	REQ_SEND;
1046	}	1030	}
1047		1031
1048	void	1032	void
1049	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1033	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1050	SV * fh
1051	UV offset
1052	IV length
1053	SV * callback
1054	PROTOTYPE: $$$;$	1034	PROTOTYPE: $$$;$
1055	PPCODE:	1035	PPCODE:
1056	{	1036	{
		1037	int fd = s_fileno_croak (fh, 0);
1057	dREQ;	1038	dREQ;
1058		1039
1059	req->type = REQ_READAHEAD;	1040	req->type = EIO_READAHEAD;
1060	req->fh = newSVsv (fh);	1041	req->sv1 = newSVsv (fh);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1042	req->int1 = fd;
1062	req->offset = offset;	1043	req->offs = offset;
1063	req->length = length;	1044	req->size = length;
1064		1045
1065	REQ_SEND;	1046	REQ_SEND;
1066	}	1047	}
1067		1048
1068	void	1049	void
1069	aio_stat (fh_or_path,callback=&PL_sv_undef)	1050	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1070	SV * fh_or_path
1071	SV * callback
1072	ALIAS:	1051	ALIAS:
1073	aio_stat = REQ_STAT	1052	aio_stat = EIO_STAT
1074	aio_lstat = REQ_LSTAT	1053	aio_lstat = EIO_LSTAT
		1054	aio_statvfs = EIO_STATVFS
1075	PPCODE:	1055	PPCODE:
1076	{	1056	{
1077	dREQ;	1057	dREQ;
1078		1058
1079	New (0, req->statdata, 1, Stat_t);	1059	req->sv1 = newSVsv (fh_or_path);
1080	if (!req->statdata)
1081	{
1082	req_free (req);
1083	croak ("out of memory during aio_req->statdata allocation");
1084	}
1085		1060
1086	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1087	{	1062	{
1088	req->type = ix;	1063	req->type = ix;
1089	req->data = newSVsv (fh_or_path);
1090	req->dataptr = SvPVbyte_nolen (req->data);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1091	}	1065	}
1092	else	1066	else
1093	{	1067	{
1094	req->type = REQ_FSTAT;	1068	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1095	req->fh = newSVsv (fh_or_path);
1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097	}	1070	}
1098		1071
1099	REQ_SEND;	1072	REQ_SEND;
1100	}	1073	}
1101		1074
1102	void	1075	void
		1076	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1077	PPCODE:
		1078	{
		1079	dREQ;
		1080
		1081	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1082	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1083	req->sv1 = newSVsv (fh_or_path);
		1084
		1085	if (SvPOK (req->sv1))
		1086	{
		1087	req->type = EIO_UTIME;
		1088	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1089	}
		1090	else
		1091	{
		1092	req->type = EIO_FUTIME;
		1093	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1094	}
		1095
		1096	REQ_SEND;
		1097	}
		1098
		1099	void
		1100	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1101	PPCODE:
		1102	{
		1103	dREQ;
		1104
		1105	req->sv1 = newSVsv (fh_or_path);
		1106	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1107
		1108	if (SvPOK (req->sv1))
		1109	{
		1110	req->type = EIO_TRUNCATE;
		1111	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1112	}
		1113	else
		1114	{
		1115	req->type = EIO_FTRUNCATE;
		1116	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1117	}
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
		1123	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1124	ALIAS:
		1125	aio_chmod = EIO_CHMOD
		1126	aio_mkdir = EIO_MKDIR
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->int2 = mode;
		1132	req->sv1 = newSVsv (fh_or_path);
		1133
		1134	if (SvPOK (req->sv1))
		1135	{
		1136	req->type = ix;
		1137	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1138	}
		1139	else
		1140	{
		1141	req->type = EIO_FCHMOD;
		1142	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1143	}
		1144
		1145	REQ_SEND;
		1146	}
		1147
		1148	void
		1149	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1150	PPCODE:
		1151	{
		1152	dREQ;
		1153
		1154	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1155	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1156	req->sv1 = newSVsv (fh_or_path);
		1157
		1158	if (SvPOK (req->sv1))
		1159	{
		1160	req->type = EIO_CHOWN;
		1161	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1162	}
		1163	else
		1164	{
		1165	req->type = EIO_FCHOWN;
		1166	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1167	}
		1168
		1169	REQ_SEND;
		1170	}
		1171
		1172	void
		1173	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	dREQ;
		1177
		1178	req->type = EIO_READDIR;
		1179	req->sv1 = newSVsv (pathname);
		1180	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1181	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1182
		1183	if (flags & EIO_READDIR_DENTS)
		1184	req->int1 |= EIO_READDIR_CUSTOM2;
		1185
		1186	REQ_SEND;
		1187	}
		1188
		1189	void
1103	aio_unlink (pathname,callback=&PL_sv_undef)	1190	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1104	SV * pathname
1105	SV * callback
1106	ALIAS:	1191	ALIAS:
1107	aio_unlink = REQ_UNLINK	1192	aio_unlink = EIO_UNLINK
1108	aio_rmdir = REQ_RMDIR	1193	aio_rmdir = EIO_RMDIR
1109	aio_readdir = REQ_READDIR	1194	aio_readdir = EIO_READDIR
1110	PPCODE:	1195	PPCODE:
1111	{	1196	{
1112	dREQ;	1197	dREQ;
1113		1198
1114	req->type = ix;	1199	req->type = ix;
1115	req->data = newSVsv (pathname);	1200	req->sv1 = newSVsv (pathname);
1116	req->dataptr = SvPVbyte_nolen (req->data);	1201	req->ptr1 = SvPVbyte_nolen (req->sv1);
1117		1202
1118	REQ_SEND;	1203	REQ_SEND;
1119	}	1204	}
1120		1205
1121	void	1206	void
1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1207	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1123	SV * oldpath
1124	SV * newpath
1125	SV * callback
1126	ALIAS:	1208	ALIAS:
1127	aio_link = REQ_LINK	1209	aio_link = EIO_LINK
1128	aio_symlink = REQ_SYMLINK	1210	aio_symlink = EIO_SYMLINK
1129	aio_rename = REQ_RENAME	1211	aio_rename = EIO_RENAME
1130	PPCODE:	1212	PPCODE:
1131	{	1213	{
1132	dREQ;	1214	dREQ;
1133		1215
1134	req->type = ix;	1216	req->type = ix;
1135	req->fh = newSVsv (oldpath);	1217	req->sv1 = newSVsv (oldpath);
1136	req->data2ptr = SvPVbyte_nolen (req->fh);	1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	req->data = newSVsv (newpath);	1219	req->sv2 = newSVsv (newpath);
1138	req->dataptr = SvPVbyte_nolen (req->data);	1220	req->ptr2 = SvPVbyte_nolen (req->sv2);
1139		1221
1140	REQ_SEND;	1222	REQ_SEND;
1141	}	1223	}
1142		1224
1143	void	1225	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1226	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1145	double delay
1146	SV * callback
1147	PPCODE:	1227	PPCODE:
1148	{	1228	{
1149	dREQ;	1229	dREQ;
1150		1230
1151	req->type = REQ_SLEEP;	1231	req->type = EIO_MKNOD;
1152	req->fd = delay < 0. ? 0 : delay;	1232	req->sv1 = newSVsv (pathname);
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
1154		1234	req->int2 = (mode_t)mode;
		1235	req->offs = dev;
		1236
1155	REQ_SEND;	1237	REQ_SEND;
1156	}	1238	}
1157		1239
1158	void	1240	void
		1241	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1242	ALIAS:
		1243	aio_mtouch = EIO_MTOUCH
		1244	aio_msync = EIO_MSYNC
		1245	PROTOTYPE: $$$$;$
		1246	PPCODE:
		1247	{
		1248	STRLEN svlen;
		1249	UV len = SvUV (length);
		1250	char *svptr = SvPVbyte (data, svlen);
		1251
		1252	if (offset < 0)
		1253	offset += svlen;
		1254
		1255	if (offset < 0 || offset > svlen)
		1256	croak ("offset outside of scalar");
		1257
		1258	if (!SvOK (length) || len + offset > svlen)
		1259	len = svlen - offset;
		1260
		1261	{
		1262	dREQ;
		1263
		1264	req->type = ix;
		1265	req->size = len;
		1266	req->sv2 = SvREFCNT_inc (data);
		1267	req->ptr2 = (char *)svptr + offset;
		1268	req->int1 = flags;
		1269
		1270	REQ_SEND;
		1271	}
		1272	}
		1273
		1274	void
		1275	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = EIO_BUSY;
		1281	req->nv1 = delay < 0. ? 0. : delay;
		1282
		1283	REQ_SEND;
		1284	}
		1285
		1286	void
1159	aio_group (callback=&PL_sv_undef)	1287	aio_group (SV *callback=&PL_sv_undef)
1160	SV * callback
1161	PROTOTYPE: ;$	1288	PROTOTYPE: ;$
1162	PPCODE:	1289	PPCODE:
1163	{	1290	{
1164	dREQ;	1291	dREQ;
		1292
1165	req->type = REQ_GROUP;	1293	req->type = EIO_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168		1294
1169	req_send (req);	1295	req_submit (req);
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1296	XPUSHs (req_sv (req, aio_grp_stash));
1171	}	1297	}
		1298
		1299	void
		1300	aio_nop (SV *callback=&PL_sv_undef)
		1301	ALIAS:
		1302	aio_nop = EIO_NOP
		1303	aio_sync = EIO_SYNC
		1304	PPCODE:
		1305	{
		1306	dREQ;
		1307
		1308	req->type = ix;
		1309
		1310	REQ_SEND;
		1311	}
		1312
		1313	int
		1314	aioreq_pri (int pri = 0)
		1315	PROTOTYPE: ;$
		1316	CODE:
		1317	RETVAL = next_pri;
		1318	if (items > 0)
		1319	{
		1320	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1321	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1322	next_pri = pri;
		1323	}
		1324	OUTPUT:
		1325	RETVAL
		1326
		1327	void
		1328	aioreq_nice (int nice = 0)
		1329	CODE:
		1330	nice = next_pri - nice;
		1331	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1332	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1333	next_pri = nice;
1172		1334
1173	void	1335	void
1174	flush ()	1336	flush ()
1175	PROTOTYPE:	1337	PROTOTYPE:
1176	CODE:	1338	CODE:
1177	while (nreqs)	1339	while (eio_nreqs ())
1178	{	1340	{
1179	poll_wait ();	1341	poll_wait ();
1180	poll_cb ();	1342	poll_cb ();
1181	}	1343	}
1182		1344
1183	void	1345	int
1184	poll()	1346	poll()
1185	PROTOTYPE:	1347	PROTOTYPE:
1186	CODE:	1348	CODE:
1187	if (nreqs)
1188	{
1189	poll_wait ();	1349	poll_wait ();
1190	poll_cb ();	1350	RETVAL = poll_cb ();
1191	}	1351	OUTPUT:
		1352	RETVAL
1192		1353
1193	int	1354	int
1194	poll_fileno()	1355	poll_fileno()
1195	PROTOTYPE:	1356	PROTOTYPE:
1196	CODE:	1357	CODE:
1197	RETVAL = respipe [0];	1358	RETVAL = s_epipe_fd (&respipe);
1198	OUTPUT:	1359	OUTPUT:
1199	RETVAL	1360	RETVAL
1200		1361
1201	int	1362	int
1202	poll_cb(...)	1363	poll_cb(...)
…		…
1208		1369
1209	void	1370	void
1210	poll_wait()	1371	poll_wait()
1211	PROTOTYPE:	1372	PROTOTYPE:
1212	CODE:	1373	CODE:
1213	if (nreqs)
1214	poll_wait ();	1374	poll_wait ();
1215		1375
1216	int	1376	int
1217	nreqs()	1377	nreqs()
1218	PROTOTYPE:	1378	PROTOTYPE:
1219	CODE:	1379	CODE:
1220	RETVAL = nreqs;	1380	RETVAL = eio_nreqs ();
1221	OUTPUT:	1381	OUTPUT:
1222	RETVAL	1382	RETVAL
1223		1383
1224	PROTOTYPES: DISABLE	1384	int
1225		1385	nready()
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227
1228	void
1229	cancel (aio_req_ornot req)
1230	PROTOTYPE:	1386	PROTOTYPE:
1231	CODE:	1387	CODE:
		1388	RETVAL = eio_nready ();
		1389	OUTPUT:
		1390	RETVAL
		1391
		1392	int
		1393	npending()
		1394	PROTOTYPE:
		1395	CODE:
		1396	RETVAL = eio_npending ();
		1397	OUTPUT:
		1398	RETVAL
		1399
		1400	int
		1401	nthreads()
		1402	PROTOTYPE:
		1403	CODE:
		1404	RETVAL = eio_nthreads ();
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1410	PROTOTYPE: $$$$
		1411	CODE:
		1412	RETVAL = posix_fadvise (fh, offset, length, advice);
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	ssize_t
		1417	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1418	PROTOTYPE: $$$$
		1419	CODE:
		1420	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void
		1425	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1426	PROTOTYPE: $$$$$;$
		1427	PPCODE:
		1428	sv_unmagic (scalar, MMAP_MAGIC);
		1429	{
		1430	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1431	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1432	if (addr == (void *)-1)
		1433	XSRETURN_NO;
		1434
		1435	sv_force_normal (scalar);
		1436
		1437	/* we store the length in mg_obj, as namlen is I32 :/ */
		1438	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1439	->mg_obj = (SV *)length;
		1440
		1441	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1442
		1443	if (!(prot & PROT_WRITE))
		1444	SvREADONLY_on (scalar);
		1445
		1446	if (SvLEN (scalar))
		1447	Safefree (SvPVX (scalar));
		1448
		1449	SvPVX (scalar) = (char *)addr;
		1450	SvCUR_set (scalar, length);
		1451	SvLEN_set (scalar, 0);
		1452	SvPOK_only (scalar);
		1453
		1454	XSRETURN_YES;
		1455	}
		1456
		1457	void
		1458	munmap (SV *scalar)
		1459	PROTOTYPE: $
		1460	CODE:
		1461	sv_unmagic (scalar, MMAP_MAGIC);
		1462
		1463	int
		1464	madvise (SV *scalar, off_t offset, off_t length, IV advice_or_prot)
		1465	ALIAS:
		1466	mprotect = 1
		1467	PROTOTYPE: $$$$
		1468	CODE:
		1469	{
		1470	STRLEN cur;
		1471	char *addr = SvPVbyte (scalar, cur);
		1472
		1473	if (offset > cur)
		1474	RETVAL = errno = EFAULT;
		1475	else
		1476	{
		1477	if (!SvOK (ST (2)))
		1478	length = cur - offset;
		1479
		1480	if (offset + length > cur)
		1481	RETVAL = errno = EFAULT;
		1482	else
		1483	switch (ix)
		1484	{
		1485	case 0: RETVAL = posix_madvise (addr + offset, length, advice_or_prot); break;
		1486	case 1: RETVAL = mprotect (addr + offset, length, advice_or_prot); break;
		1487	}
		1488	}
		1489	}
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
		1494	mlockall (int flags)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	#if _POSIX_MEMLOCK
		1498	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1499	extern int mallopt (int, int);
		1500	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1501	#endif
		1502	mlockall (flags);
		1503	#else
		1504	RETVAL = -1;
		1505	errno = ENOSYS;
		1506	#endif
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlockall ()
		1512	PROTOTYPE:
		1513	CODE:
		1514	#if _POSIX_MEMLOCK
		1515	munlockall ();
		1516	#else
		1517	RETVAL = -1;
		1518	errno = ENOSYS;
		1519	#endif
		1520	OUTPUT:
		1521	RETVAL
		1522
		1523	void _on_next_submit (SV *cb)
		1524	CODE:
		1525	SvREFCNT_dec (on_next_submit);
		1526	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1527
		1528	PROTOTYPES: DISABLE
		1529
		1530	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1531
		1532	void
		1533	cancel (aio_req_ornot req)
		1534	CODE:
1232	req_cancel (req);	1535	eio_cancel (req);
		1536
		1537	void
		1538	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1539	PPCODE:
		1540	{
		1541	if (GIMME_V != G_VOID)
		1542	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1543
		1544	if (items > 1)
		1545	{
		1546	SV *cb_cv =get_cb (callback);
		1547
		1548	SvREFCNT_dec (req->callback);
		1549	req->callback = SvREFCNT_inc (cb_cv);
		1550	}
		1551	}
1233		1552
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1553	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1554
1236	void	1555	void
1237	add (aio_req grp, ...)	1556	add (aio_req grp, ...)
1238	PPCODE:	1557	PPCODE:
1239	{	1558	{
1240	int i;	1559	int i;
1241		1560
		1561	if (grp->int1 == 2)
		1562	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1563
1242	for (i = 1; i < items; ++i )	1564	for (i = 1; i < items; ++i )
1243	{	1565	{
		1566	aio_req req;
		1567
1244	if (GIMME_V != G_VOID)	1568	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1569	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1570
1247	aio_req req = SvAIO_REQ (ST (i));	1571	req = SvAIO_REQ (ST (i));
1248		1572
1249	if (req)	1573	if (req)
1250	{	1574	eio_grp_add (grp, req);
1251	req->grp_prev = grp;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;
1257	}
1258	}	1575	}
1259	}	1576	}
1260		1577
1261	void	1578	void
		1579	cancel_subs (aio_req_ornot req)
		1580	CODE:
		1581	req_cancel_subs (req);
		1582
		1583	void
1262	result (aio_req grp, ...)	1584	result (aio_req grp, ...)
		1585	CODE:
		1586	{
		1587	int i;
		1588	AV *av;
		1589
		1590	grp->errorno = errno;
		1591
		1592	av = newAV ();
		1593	av_extend (av, items - 1);
		1594
		1595	for (i = 1; i < items; ++i )
		1596	av_push (av, newSVsv (ST (i)));
		1597
		1598	SvREFCNT_dec (grp->sv1);
		1599	grp->sv1 = (SV *)av;
		1600	}
		1601
		1602	void
		1603	errno (aio_req grp, int errorno = errno)
		1604	CODE:
		1605	grp->errorno = errorno;
		1606
		1607	void
		1608	limit (aio_req grp, int limit)
1263	CODE:	1609	CODE:
1264	{	1610	eio_grp_limit (grp, limit);
1265	int i;
1266	AV *av = newAV ();
1267		1611
1268	if (grp->data)	1612	void
		1613	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1614	CODE:
		1615	{
1269	SvREFCNT_dec (grp->data);	1616	SvREFCNT_dec (grp->sv2);
		1617	grp->sv2 = newSVsv (callback);
		1618	grp->feed = aio_grp_feed;
1270		1619
1271	for (i = 1; i < items; ++i )	1620	if (grp->int2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	1621	grp->int2 = 2;
1273		1622
1274	grp->data = (SV *)av;	1623	eio_grp_limit (grp, grp->int2);
1275	}	1624	}
1276		1625

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