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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.59 by root, Mon Oct 23 18:56:27 2006 UTC vs.
Revision 1.199 by root, Thu Sep 29 09:47:13 2011 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
31	# include <sys/socket.h>	69	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
34	# else	295	# else
35	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	297	# endif
37	#endif	298	#endif
38		299	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
43		314
44	#if __ia64	315	#ifndef makedev
45	# define STACKSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	317	#endif
47	# define STACKSIZE 8192	318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
		324
		325	#ifndef PAGESIZE
		326	# define PAGESIZE sysconf (_SC_PAGESIZE)
48	#endif	327	#endif
49		328
50	enum {	329	enum {
51	REQ_QUIT,	330	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_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};	331	};
63		332
64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66
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 pri;
89	unsigned char flags;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
98		336
99	static int started, wanted;	337	static SV *on_next_submit;
100	static volatile int nreqs;	338	static int next_pri = EIO_PRI_DEFAULT;
101	static int max_outstanding = 1<<30;	339	static int max_outstanding;
102	static int respipe [2];
103		340
104	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	341	static s_epipe respipe;
105	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
106	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
107		342
108	static volatile aio_req reqs, reqe; /* queue start, queue end */	343	static void req_destroy (aio_req req);
109	static volatile aio_req ress, rese; /* queue start, queue end */
110
111	static void req_invoke (aio_req req);	344	static void req_cancel (aio_req req);
112	static void req_free (aio_req req);	345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
113		357
114	/* must be called at most once */	358	/* must be called at most once */
115	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
116	{	360	{
117	if (!req->self)	361	if (!req->self)
118	{	362	{
119	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
120	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
121	}	365	}
122		366
123	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		368	}
		369
		370	static SV *
		371	newSVaio_wd (aio_wd wd)
		372	{
		373	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
124	}	374	}
125		375
126	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
127	{	377	{
128	MAGIC *mg;	378	MAGIC *mg;
129		379
130	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	380	if (!SvROK (sv)
		381	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		382	&& SvSTASH (SvRV (sv)) != aio_req_stash
		383	&& !sv_derived_from (sv, "IO::AIO::REQ")))
131	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
132		385
133	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
134		387
135	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
136	}	389	}
137		390
		391	static aio_wd SvAIO_WD (SV *sv)
		392	{
		393	if (!SvROK (sv)
		394	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		395	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		396	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		397
		398	return (aio_wd)(long)SvIVX (SvRV (sv));
		399	}
		400
138	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
139	{	402	{
140	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	if (grp->sv2 && SvOK (grp->sv2))
141	{	404	{
142	int old_len = grp->length;	405	dSP;
143		406
144	if (grp->fh2 && SvOK (grp->fh2))	407	ENTER;
		408	SAVETMPS;
		409	PUSHMARK (SP);
		410	XPUSHs (req_sv (grp, aio_grp_stash));
		411	PUTBACK;
		412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		413	SPAGAIN;
		414	FREETMPS;
		415	LEAVE;
		416	}
		417	}
		418
		419	static void req_submit (eio_req *req)
		420	{
		421	eio_submit (req);
		422
		423	if (expect_false (on_next_submit))
		424	{
		425	dSP;
		426	SV *cb = sv_2mortal (on_next_submit);
		427
		428	on_next_submit = 0;
		429
		430	PUSHMARK (SP);
		431	PUTBACK;
		432	call_sv (cb, G_DISCARD | G_EVAL);
		433	}
		434	}
		435
		436	static int req_invoke (eio_req *req)
		437	{
		438	if (req->flags & FLAG_SV2_RO_OFF)
		439	SvREADONLY_off (req->sv2);
		440
		441	if (!EIO_CANCELLED (req) && req->callback)
		442	{
		443	dSP;
		444	static SV *sv_result_cache; /* caches the result integer SV */
		445	SV *sv_result;
		446
		447	ENTER;
		448	SAVETMPS;
		449	PUSHMARK (SP);
		450	EXTEND (SP, 1);
		451
		452	/* do not recreate the result IV from scratch each time */
		453	if (expect_true (sv_result_cache))
145	{	454	{
146	dSP;	455	sv_result = sv_result_cache; sv_result_cache = 0;
147		456	SvIV_set (sv_result, req->result);
148	ENTER;	457	SvIOK_only (sv_result);
149	SAVETMPS;
150	PUSHMARK (SP);
151	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
152	PUTBACK;
153	call_sv (grp->fh2, G_VOID | G_EVAL);
154	SPAGAIN;
155	FREETMPS;
156	LEAVE;
157	}	458	}
158		459	else
159	/* stop if no progress has been made */
160	if (old_len == grp->length)
161	{	460	{
162	SvREFCNT_dec (grp->fh2);	461	sv_result = newSViv (req->result);
163	grp->fh2 = 0;	462	SvREADONLY_on (sv_result);
164	break;
165	}	463	}
		464
		465	switch (req->type)
		466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
		471	case EIO_READDIR:
		472	{
		473	SV *rv = &PL_sv_undef;
		474
		475	if (req->result >= 0)
		476	{
		477	int i;
		478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		480	AV *av = newAV ();
		481
		482	av_extend (av, req->result - 1);
		483
		484	for (i = 0; i < req->result; ++i)
		485	{
		486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		489
		490	if (req->int1 & EIO_READDIR_CUSTOM2)
		491	{
		492	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		493	AV *avent = newAV ();
		494
		495	av_extend (avent, 2);
		496
		497	if (!sv_type [ent->type])
		498	{
		499	sv_type [ent->type] = newSViv (ent->type);
		500	SvREADONLY_on (sv_type [ent->type]);
		501	}
		502
		503	av_store (avent, 0, namesv);
		504	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		505	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		506
		507	av_store (av, i, newRV_noinc ((SV *)avent));
		508	}
		509	else
		510	av_store (av, i, namesv);
		511
		512	++ent;
		513	}
		514	else
		515	{
		516	SV *name = newSVpv (names, 0);
		517	av_store (av, i, name);
		518	names += SvCUR (name) + 1;
		519	}
		520	}
		521
		522	rv = sv_2mortal (newRV_noinc ((SV *)av));
		523	}
		524
		525	PUSHs (rv);
		526
		527	if (req->int1 & EIO_READDIR_CUSTOM1)
		528	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		529	}
		530	break;
		531
		532	case EIO_OPEN:
		533	{
		534	/* convert fd to fh */
		535	SV *fh = &PL_sv_undef;
		536
		537	if (req->result >= 0)
		538	{
		539	GV *gv = (GV *)sv_newmortal ();
		540	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		541	char sym [64];
		542	int symlen;
		543
		544	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		545	gv_init (gv, aio_stash, sym, symlen, 0);
		546
		547	symlen = snprintf (
		548	sym,
		549	sizeof (sym),
		550	"%s&=%d",
		551	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		552	(int)req->result
		553	);
		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
		559	PUSHs (fh);
		560	}
		561	break;
		562
		563	case EIO_STATVFS:
		564	case EIO_FSTATVFS:
		565	{
		566	SV *rv = &PL_sv_undef;
		567
		568	#ifndef _WIN32
		569	if (req->result >= 0)
		570	{
		571	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		572	HV *hv = newHV ();
		573
		574	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		575
		576	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		577	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		578	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		579	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		580	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		581	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		582	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		583	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		584	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		585	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		586	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		587	}
		588	#endif
		589
		590	PUSHs (rv);
		591	}
		592
		593	break;
		594
		595	case EIO_GROUP:
		596	req->int1 = 2; /* mark group as finished */
		597
		598	if (req->sv1)
		599	{
		600	int i;
		601	AV *av = (AV *)req->sv1;
		602
		603	EXTEND (SP, AvFILL (av) + 1);
		604	for (i = 0; i <= AvFILL (av); ++i)
		605	PUSHs (*av_fetch (av, i, 0));
		606	}
		607	break;
		608
		609	case EIO_NOP:
		610	case EIO_BUSY:
		611	break;
		612
		613	case EIO_READLINK:
		614	case EIO_REALPATH:
		615	if (req->result > 0)
		616	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		617	break;
		618
		619	case EIO_STAT:
		620	case EIO_LSTAT:
		621	case EIO_FSTAT:
		622	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		623
		624	if (!(PL_laststatval = req->result))
		625	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		626	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		627
		628	PUSHs (sv_result);
		629	break;
		630
		631	case EIO_READ:
		632	{
		633	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		634	*SvEND (req->sv2) = 0;
		635	SvPOK_only (req->sv2);
		636	SvSETMAGIC (req->sv2);
		637	PUSHs (sv_result);
		638	}
		639	break;
		640
		641	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		642	if (req->result > 0)
		643	SvIV_set (sv_result, 0);
		644	/* FALLTHROUGH */
		645
		646	default:
		647	PUSHs (sv_result);
		648	break;
		649	}
		650
		651	errno = req->errorno;
		652
		653	PUTBACK;
		654	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		655	SPAGAIN;
		656
		657	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		658	SvREFCNT_dec (sv_result);
		659	else
		660	sv_result_cache = sv_result;
		661
		662	FREETMPS;
		663	LEAVE;
		664
		665	PUTBACK;
166	}	666	}
167	}
168		667
169	static void aio_grp_dec (aio_req grp)	668	return !!SvTRUE (ERRSV);
170	{
171	--grp->length;
172
173	/* call feeder, if applicable */
174	aio_grp_feed (grp);
175
176	/* finish, if done */
177	if (!grp->length && grp->fd)
178	{
179	req_invoke (grp);
180	req_free (grp);
181	}
182	}	669	}
183		670
184	static void poll_wait ()
185	{
186	if (nreqs && !ress)
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191
192	select (respipe [0] + 1, &rfd, 0, 0, 0);
193	}
194	}
195
196	static void req_invoke (aio_req req)
197	{
198	dSP;
199	int errorno = errno;
200
201	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
202	return;
203
204	errno = req->errorno;
205
206	ENTER;
207	SAVETMPS;
208	PUSHMARK (SP);
209	EXTEND (SP, 1);
210
211	switch (req->type)
212	{
213	case REQ_READDIR:
214	{
215	SV *rv = &PL_sv_undef;
216
217	if (req->result >= 0)
218	{
219	char *buf = req->data2ptr;
220	AV *av = newAV ();
221
222	while (req->result)
223	{
224	SV *sv = newSVpv (buf, 0);
225
226	av_push (av, sv);
227	buf += SvCUR (sv) + 1;
228	req->result--;
229	}
230
231	rv = sv_2mortal (newRV_noinc ((SV *)av));
232	}
233
234	PUSHs (rv);
235	}
236	break;
237
238	case REQ_OPEN:
239	{
240	/* convert fd to fh */
241	SV *fh;
242
243	PUSHs (sv_2mortal (newSViv (req->result)));
244	PUTBACK;
245	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
246	SPAGAIN;
247
248	fh = SvREFCNT_inc (POPs);
249
250	PUSHMARK (SP);
251	XPUSHs (sv_2mortal (fh));
252	}
253	break;
254
255	case REQ_GROUP:
256	req->fd = 2; /* mark group as finished */
257
258	if (req->data)
259	{
260	int i;
261	AV *av = (AV *)req->data;
262
263	EXTEND (SP, AvFILL (av) + 1);
264	for (i = 0; i <= AvFILL (av); ++i)
265	PUSHs (*av_fetch (av, i, 0));
266	}
267	break;
268
269	case REQ_NOP:
270	case REQ_SLEEP:
271	break;
272
273	default:
274	PUSHs (sv_2mortal (newSViv (req->result)));
275	break;
276	}
277
278
279	PUTBACK;
280	call_sv (req->callback, G_VOID | G_EVAL);
281	SPAGAIN;
282
283	FREETMPS;
284	LEAVE;
285
286	errno = errorno;
287
288	if (SvTRUE (ERRSV))
289	{
290	req_free (req);
291	croak (0);
292	}
293	}
294
295	static void req_free (aio_req req)	671	static void req_destroy (aio_req req)
296	{	672	{
297	if (req->grp)
298	{
299	aio_req grp = req->grp;
300
301	/* unlink request */
302	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
303	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
304
305	if (grp->grp_first == req)
306	grp->grp_first = req->grp_next;
307
308	aio_grp_dec (grp);
309	}
310
311	if (req->self)	673	if (req->self)
312	{	674	{
313	sv_unmagic (req->self, PERL_MAGIC_ext);	675	sv_unmagic (req->self, PERL_MAGIC_ext);
314	SvREFCNT_dec (req->self);	676	SvREFCNT_dec (req->self);
315	}	677	}
316		678
317	SvREFCNT_dec (req->data);
318	SvREFCNT_dec (req->fh);	679	SvREFCNT_dec (req->sv1);
319	SvREFCNT_dec (req->fh2);	680	SvREFCNT_dec (req->sv2);
		681	SvREFCNT_dec (req->sv3);
		682	SvREFCNT_dec (req->sv4);
320	SvREFCNT_dec (req->callback);	683	SvREFCNT_dec (req->callback);
321	Safefree (req->statdata);
322
323	if (req->type == REQ_READDIR && req->result >= 0)
324	free (req->data2ptr);
325		684
326	Safefree (req);	685	Safefree (req);
327	}	686	}
328		687
329	static void req_cancel (aio_req req)	688	static void req_cancel_subs (aio_req grp)
330	{	689	{
331	req->flags |= FLAG_CANCELLED;
332
333	if (req->type == REQ_GROUP)	690	if (grp->type != EIO_GROUP)
		691	return;
		692
		693	SvREFCNT_dec (grp->sv2);
		694	grp->sv2 = 0;
		695
		696	eio_grp_cancel (grp);
		697	}
		698
		699	static void create_respipe (void)
		700	{
		701	if (s_epipe_renew (&respipe))
		702	croak ("IO::AIO: unable to initialize result pipe");
		703	}
		704
		705	static void poll_wait (void)
		706	{
		707	while (eio_nreqs ())
334	{	708	{
335	aio_req sub;	709	int size;
336		710
337	for (sub = req->grp_first; sub; sub = sub->grp_next)	711	X_LOCK (reslock);
338	req_cancel (sub);	712	size = res_queue.size;
		713	X_UNLOCK (reslock);
		714
		715	if (size)
		716	return;
		717
		718	etp_maybe_start_thread ();
		719
		720	s_epipe_wait (&respipe);
339	}	721	}
340	}	722	}
341		723
342	static int poll_cb ()	724	static int poll_cb (void)
343	{	725	{
344	dSP;
345	int count = 0;
346	int do_croak = 0;
347	aio_req req;
348
349	for (;;)	726	for (;;)
350	{	727	{
351	pthread_mutex_lock (&reslock);	728	int res = eio_poll ();
352	req = ress;
353		729
354	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		753	# define munmap(addr,length) (errno = ENOSYS, -1)
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
		768	{
		769	int old_errno = errno;
		770	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		771	errno = old_errno;
		772
		773	mg->mg_obj = 0; /* just in case */
		774
		775	SvREADONLY_off (sv);
		776
		777	if (SvPVX (sv) != mg->mg_ptr)
		778	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		779
		780	SvCUR_set (sv, 0);
		781	SvPVX (sv) = 0;
		782	SvOK_off (sv);
		783
		784	return 0;
		785	}
		786
		787	static MGVTBL mmap_vtbl = {
		788	0, 0, 0, 0, mmap_free
		789	};
		790
		791	/*****************************************************************************/
		792
		793	static SV * get_cb (SV *cb_sv)
		794	{
		795	SvGETMAGIC (cb_sv);
		796	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		797	}
		798
		799	#define dREQ \
		800	SV *cb_cv; \
		801	aio_req req; \
		802	int req_pri = next_pri; \
		803	next_pri = EIO_PRI_DEFAULT; \
		804	\
		805	cb_cv = get_cb (callback); \
		806	\
		807	Newz (0, req, 1, eio_req); \
		808	if (!req) \
		809	croak ("out of memory during eio_req allocation"); \
		810	\
		811	req->callback = SvREFCNT_inc (cb_cv); \
		812	req->pri = req_pri
		813
		814	#define REQ_SEND \
		815	PUTBACK; \
		816	req_submit (req); \
		817	SPAGAIN; \
		818	\
		819	if (GIMME_V != G_VOID) \
		820	XPUSHs (req_sv (req, aio_req_stash));
		821
		822	static void
		823	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		824	{
		825	if (expect_false (SvROK (path)))
		826	{
		827	AV *av = (AV *)SvRV (path);
		828	SV *wdob;
		829
		830	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		831	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		832
		833	path = AvARRAY (av)[1];
		834	wdob = AvARRAY (av)[0];
		835
		836	if (SvOK (wdob))
355	{	837	{
356	ress = req->next;	838	*wd = SvAIO_WD (wdob);
357		839	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
358	if (!ress)
359	{
360	/* read any signals sent by the worker threads */
361	char buf [32];
362	while (read (respipe [0], buf, 32) == 32)
363	;
364
365	rese = 0;
366	}
367	}
368
369	pthread_mutex_unlock (&reslock);
370
371	if (!req)
372	break;
373
374	--nreqs;
375
376	if (req->type == REQ_QUIT)
377	started--;
378	else if (req->type == REQ_GROUP && req->length)
379	{
380	req->fd = 1; /* mark request as delayed */
381	continue;
382	}	840	}
383	else	841	else
384	{	842	*wd = EIO_INVALID_WD;
385	if (req->type == REQ_READ)
386	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
387
388	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
389	SvREADONLY_off (req->data);
390
391	if (req->statdata)
392	{
393	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
394	PL_laststatval = req->result;
395	PL_statcache = *(req->statdata);
396	}
397
398	req_invoke (req);
399
400	count++;
401	}
402
403	req_free (req);
404	}	843	}
405		844
406	return count;	845	*pathsv = newSVsv (path);
		846	*ptr = SvPVbyte_nolen (*pathsv);
407	}	847	}
408		848
409	static void *aio_proc(void *arg);	849	static void
410		850	req_set_path1 (aio_req req, SV *path)
411	static void start_thread (void)
412	{	851	{
413	sigset_t fullsigset, oldsigset;	852	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
414	pthread_t tid;
415	pthread_attr_t attr;
416
417	pthread_attr_init (&attr);
418	pthread_attr_setstacksize (&attr, STACKSIZE);
419	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
420
421	sigfillset (&fullsigset);
422	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
423
424	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
425	started++;
426
427	sigprocmask (SIG_SETMASK, &oldsigset, 0);
428	}	853	}
429		854
430	static void req_send (aio_req req)	855	static void
		856	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
431	{	857	{
432	while (started < wanted && nreqs >= started)	858	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
433	start_thread ();
434		859
435	++nreqs;	860	switch (SvTYPE (rv))
436
437	pthread_mutex_lock (&reqlock);
438
439	req->next = 0;
440
441	if (reqe)
442	{	861	{
443	reqe->next = req;	862	case SVt_PVIO:
444	reqe = req;	863	case SVt_PVLV:
		864	case SVt_PVGV:
		865	req->type = type_fh;
		866	req->sv1 = newSVsv (fh_or_path);
		867	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		868	break;
		869
		870	default:
		871	req->type = type_path;
		872	req_set_path1 (req, fh_or_path);
		873	break;
445	}	874	}
446	else
447	reqe = reqs = req;
448		875
449	pthread_cond_signal (&reqwait);
450	pthread_mutex_unlock (&reqlock);
451
452	if (nreqs > max_outstanding)
453	for (;;)
454	{
455	poll_cb ();
456
457	if (nreqs <= max_outstanding)
458	break;
459
460	poll_wait ();
461	}
462	}	876	}
463		877
464	static void end_thread (void)	878	MODULE = IO::AIO PACKAGE = IO::AIO
465	{
466	aio_req req;
467	Newz (0, req, 1, aio_cb);
468	req->type = REQ_QUIT;
469		879
470	req_send (req);	880	PROTOTYPES: ENABLE
471	}
472		881
473	static void min_parallel (int nthreads)	882	BOOT:
474	{	883	{
475	if (wanted < nthreads)	884	static const struct {
476	wanted = nthreads;	885	const char *name;
477	}	886	IV iv;
		887	} *civ, const_iv[] = {
		888	# define const_niv(name, value) { # name, (IV) value },
		889	# define const_iv(name) { # name, (IV) name },
		890	# define const_eio(name) { # name, (IV) EIO_ ## name },
		891	const_iv (EXDEV)
		892	const_iv (ENOSYS)
		893	const_iv (O_RDONLY)
		894	const_iv (O_WRONLY)
		895	const_iv (O_RDWR)
		896	const_iv (O_CREAT)
		897	const_iv (O_TRUNC)
		898	const_iv (O_EXCL)
		899	const_iv (O_APPEND)
478		900
479	static void max_parallel (int nthreads)	901	const_iv (O_ASYNC)
480	{	902	const_iv (O_DIRECT)
481	int cur = started;	903	const_iv (O_NOATIME)
482		904
483	if (wanted > nthreads)	905	const_iv (O_CLOEXEC)
484	wanted = nthreads;	906	const_iv (O_NOCTTY)
		907	const_iv (O_NOFOLLOW)
		908	const_iv (O_NONBLOCK)
		909	const_iv (O_EXEC)
		910	const_iv (O_SEARCH)
		911	const_iv (O_DIRECTORY)
		912	const_iv (O_DSYNC)
		913	const_iv (O_RSYNC)
		914	const_iv (O_SYNC)
		915	const_iv (O_TTY_INIT)
485		916
486	while (cur > wanted)	917	const_iv (S_IFIFO)
487	{	918	const_iv (S_IFCHR)
488	end_thread ();	919	const_iv (S_IFBLK)
489	cur--;	920	const_iv (S_IFLNK)
490	}	921	const_iv (S_IFREG)
		922	const_iv (S_IFDIR)
		923	const_iv (S_IFWHT)
		924	const_iv (S_IFSOCK)
		925	const_iv (S_IFMT)
491		926
492	while (started > wanted)	927	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
493	{	928	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
494	poll_wait ();	929	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
495	poll_cb ();	930	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
496	}	931	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
497	}	932	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
498		933
499	static void create_pipe ()	934	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
500	{	935	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
501	if (pipe (respipe))	936	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
502	croak ("unable to initialize result pipe");	937	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		938	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
503		939
504	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	940	const_iv (ST_RDONLY)
505	croak ("cannot set result pipe to nonblocking mode");	941	const_iv (ST_NOSUID)
		942	const_iv (ST_NODEV)
		943	const_iv (ST_NOEXEC)
		944	const_iv (ST_SYNCHRONOUS)
		945	const_iv (ST_MANDLOCK)
		946	const_iv (ST_WRITE)
		947	const_iv (ST_APPEND)
		948	const_iv (ST_IMMUTABLE)
		949	const_iv (ST_NOATIME)
		950	const_iv (ST_NODIRATIME)
		951	const_iv (ST_RELATIME)
506		952
507	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	953	const_iv (PROT_NONE)
508	croak ("cannot set result pipe to nonblocking mode");	954	const_iv (PROT_EXEC)
509	}	955	const_iv (PROT_READ)
		956	const_iv (PROT_WRITE)
510		957
511	/*****************************************************************************/	958	/*const_iv (MAP_FIXED)*/
512	/* work around various missing functions */	959	const_iv (MAP_PRIVATE)
		960	const_iv (MAP_SHARED)
		961	const_iv (MAP_ANONYMOUS)
513		962
514	#if !HAVE_PREADWRITE	963	/* linuxish */
515	# define pread aio_pread	964	const_iv (MAP_HUGETLB)
516	# define pwrite aio_pwrite	965	const_iv (MAP_LOCKED)
		966	const_iv (MAP_NORESERVE)
		967	const_iv (MAP_POPULATE)
		968	const_iv (MAP_NONBLOCK)
517		969
518	/*	970	const_eio (MCL_FUTURE)
519	* make our pread/pwrite safe against themselves, but not against	971	const_eio (MCL_CURRENT)
520	* normal read/write by using a mutex. slows down execution a lot,
521	* but that's your problem, not mine.
522	*/
523	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
524		972
525	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	973	const_eio (MS_ASYNC)
526	{	974	const_eio (MS_INVALIDATE)
527	ssize_t res;	975	const_eio (MS_SYNC)
528	off_t ooffset;
529		976
530	pthread_mutex_lock (&preadwritelock);	977	const_eio (MT_MODIFY)
531	ooffset = lseek (fd, 0, SEEK_CUR);
532	lseek (fd, offset, SEEK_SET);
533	res = read (fd, buf, count);
534	lseek (fd, ooffset, SEEK_SET);
535	pthread_mutex_unlock (&preadwritelock);
536		978
537	return res;	979	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
538	}	980	const_eio (SYNC_FILE_RANGE_WRITE)
		981	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
539		982
540	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	983	const_eio (FALLOC_FL_KEEP_SIZE)
541	{
542	ssize_t res;
543	off_t ooffset;
544		984
545	pthread_mutex_lock (&preadwritelock);	985	const_eio (READDIR_DENTS)
546	ooffset = lseek (fd, 0, SEEK_CUR);	986	const_eio (READDIR_DIRS_FIRST)
547	lseek (fd, offset, SEEK_SET);	987	const_eio (READDIR_STAT_ORDER)
548	res = write (fd, buf, count);	988	const_eio (READDIR_FOUND_UNKNOWN)
549	lseek (fd, offset, SEEK_SET);
550	pthread_mutex_unlock (&preadwritelock);
551		989
552	return res;	990	const_eio (DT_UNKNOWN)
553	}	991	const_eio (DT_FIFO)
554	#endif	992	const_eio (DT_CHR)
555		993	const_eio (DT_DIR)
556	#if !HAVE_FDATASYNC	994	const_eio (DT_BLK)
557	# define fdatasync fsync	995	const_eio (DT_REG)
558	#endif	996	const_eio (DT_LNK)
559		997	const_eio (DT_SOCK)
560	#if !HAVE_READAHEAD	998	const_eio (DT_WHT)
561	# define readahead aio_readahead
562
563	static ssize_t readahead (int fd, off_t offset, size_t count)
564	{
565	char readahead_buf[4096];
566
567	while (count > 0)
568	{
569	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
570
571	pread (fd, readahead_buf, len, offset);
572	offset += len;
573	count -= len;
574	}
575
576	errno = 0;
577	}
578	#endif
579
580	#if !HAVE_READDIR_R
581	# define readdir_r aio_readdir_r
582
583	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
584
585	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
586	{
587	struct dirent *e;
588	int errorno;
589
590	pthread_mutex_lock (&readdirlock);
591
592	e = readdir (dirp);
593	errorno = errno;
594
595	if (e)
596	{
597	*res = ent;
598	strcpy (ent->d_name, e->d_name);
599	}
600	else
601	*res = 0;
602
603	pthread_mutex_unlock (&readdirlock);
604
605	errno = errorno;
606	return e ? 0 : -1;
607	}
608	#endif
609
610	/* sendfile always needs emulation */
611	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
612	{
613	ssize_t res;
614
615	if (!count)
616	return 0;
617
618	#if HAVE_SENDFILE
619	# if __linux
620	res = sendfile (ofd, ifd, &offset, count);
621
622	# elif __freebsd
623	/*
624	* Of course, the freebsd sendfile is a dire hack with no thoughts
625	* wasted on making it similar to other I/O functions.
626	*/
627	{
628	off_t sbytes;
629	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
630
631	if (res < 0 && sbytes)
632	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
633	res = sbytes;
634	}	999	};
635		1000
636	# elif __hpux	1001	aio_stash = gv_stashpv ("IO::AIO" , 1);
637	res = sendfile (ofd, ifd, offset, count, 0, 0);	1002	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1003	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1004	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
638		1005
639	# elif __solaris	1006	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
640	{	1007	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
641	struct sendfilevec vec;
642	size_t sbytes;
643		1008
644	vec.sfv_fd = ifd;	1009	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
645	vec.sfv_flag = 0;
646	vec.sfv_off = offset;
647	vec.sfv_len = count;
648		1010
649	res = sendfilev (ofd, &vec, 1, &sbytes);	1011	reinit ();
		1012	}
650		1013
651	if (res < 0 && sbytes)	1014	void
		1015	reinit ()
		1016	PROTOTYPE:
		1017
		1018	void
		1019	max_poll_reqs (unsigned int nreqs)
		1020	PROTOTYPE: $
		1021	CODE:
		1022	eio_set_max_poll_reqs (nreqs);
		1023
		1024	void
		1025	max_poll_time (double nseconds)
		1026	PROTOTYPE: $
		1027	CODE:
		1028	eio_set_max_poll_time (nseconds);
		1029
		1030	void
		1031	min_parallel (unsigned int nthreads)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_min_parallel (nthreads);
		1035
		1036	void
		1037	max_parallel (unsigned int nthreads)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_parallel (nthreads);
		1041
		1042	void
		1043	max_idle (unsigned int nthreads)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_max_idle (nthreads);
		1047
		1048	void
		1049	idle_timeout (unsigned int seconds)
		1050	PROTOTYPE: $
		1051	CODE:
		1052	eio_set_idle_timeout (seconds);
		1053
		1054	void
		1055	max_outstanding (unsigned int maxreqs)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	max_outstanding = maxreqs;
		1059
		1060	void
		1061	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_WD_OPEN;
		1067	req_set_path1 (req, pathname);
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
		1073	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1074	PPCODE:
		1075	{
		1076	dREQ;
		1077
		1078	req->type = EIO_OPEN;
		1079	req_set_path1 (req, pathname);
		1080	req->int1 = flags;
		1081	req->int2 = mode;
		1082
		1083	REQ_SEND;
		1084	}
		1085
		1086	void
		1087	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1088	ALIAS:
		1089	aio_fsync = EIO_FSYNC
		1090	aio_fdatasync = EIO_FDATASYNC
		1091	aio_syncfs = EIO_SYNCFS
		1092	PPCODE:
		1093	{
		1094	int fd = s_fileno_croak (fh, 0);
		1095	dREQ;
		1096
		1097	req->type = ix;
		1098	req->sv1 = newSVsv (fh);
		1099	req->int1 = fd;
		1100
		1101	REQ_SEND (req);
		1102	}
		1103
		1104	void
		1105	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1106	PPCODE:
		1107	{
		1108	int fd = s_fileno_croak (fh, 0);
		1109	dREQ;
		1110
		1111	req->type = EIO_SYNC_FILE_RANGE;
		1112	req->sv1 = newSVsv (fh);
		1113	req->int1 = fd;
		1114	req->offs = offset;
652	res = sbytes;	1115	req->size = nbytes;
653	}	1116	req->int2 = flags;
654		1117
655	# endif	1118	REQ_SEND (req);
		1119	}
		1120
		1121	void
		1122	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1123	PPCODE:
		1124	{
		1125	int fd = s_fileno_croak (fh, 0);
		1126	dREQ;
		1127
		1128	req->type = EIO_FALLOCATE;
		1129	req->sv1 = newSVsv (fh);
		1130	req->int1 = fd;
		1131	req->int2 = mode;
		1132	req->offs = offset;
		1133	req->size = len;
		1134
		1135	REQ_SEND (req);
		1136	}
		1137
		1138	void
		1139	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1143	int fd = s_fileno_croak (fh, 0);
		1144	dREQ;
		1145
		1146	if (expect_false (close_fd < 0))
		1147	{
		1148	int pipefd [2];
		1149
		1150	if (
		1151	#ifdef _WIN32
		1152	_pipe (pipefd, 1, _O_BINARY) < 0
656	#else	1153	#else
657	res = -1;	1154	pipe (pipefd) < 0
658	errno = ENOSYS;	1155	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
659	#endif	1156	#endif
660		1157	|| close (pipefd [1]) < 0
661	if (res < 0
662	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
663	#if __solaris
664	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
665	#endif
666	)
667	)
668	{
669	/* emulate sendfile. this is a major pain in the ass */
670	char buf[4096];
671	res = 0;
672
673	while (count)
674	{
675	ssize_t cnt;
676
677	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
678
679	if (cnt <= 0)
680	{	1158	)
681	if (cnt && !res) res = -1;	1159	abort (); /*D*/
682	break;
683	}
684		1160
685	cnt = write (ofd, buf, cnt);	1161	close_fd = pipefd [0];
686
687	if (cnt <= 0)
688	{
689	if (cnt && !res) res = -1;
690	break;
691	}
692
693	offset += cnt;
694	res += cnt;
695	count -= cnt;
696	}
697	}
698
699	return res;
700	}
701
702	/* read a full directory */
703	static int scandir_ (const char *path, void **namesp)
704	{
705	DIR *dirp = opendir (path);
706	union
707	{
708	struct dirent d;
709	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
710	} u;
711	struct dirent *entp;
712	char *name, *names;
713	int memlen = 4096;
714	int memofs = 0;
715	int res = 0;
716	int errorno;
717
718	if (!dirp)
719	return -1;
720
721	names = malloc (memlen);
722
723	for (;;)
724	{
725	errno = 0, readdir_r (dirp, &u.d, &entp);
726
727	if (!entp)
728	break;
729
730	name = entp->d_name;
731
732	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
733	{
734	int len = strlen (name) + 1;
735
736	res++;
737
738	while (memofs + len > memlen)
739	{
740	memlen *= 2;
741	names = realloc (names, memlen);
742	if (!names)
743	break;
744	}
745
746	memcpy (names + memofs, name, len);
747	memofs += len;
748	}
749	}
750
751	errorno = errno;
752	closedir (dirp);
753
754	if (errorno)
755	{
756	free (names);
757	errno = errorno;
758	res = -1;
759	}
760
761	*namesp = (void *)names;
762	return res;
763	}
764
765	/*****************************************************************************/
766
767	static void *aio_proc (void *thr_arg)
768	{
769	aio_req req;
770	int type;
771
772	do
773	{
774	pthread_mutex_lock (&reqlock);
775
776	for (;;)
777	{
778	req = reqs;
779
780	if (reqs)
781	{
782	reqs = reqs->next;
783	if (!reqs) reqe = 0;
784	}
785
786	if (req)
787	break;
788
789	pthread_cond_wait (&reqwait, &reqlock);
790	}
791
792	pthread_mutex_unlock (&reqlock);
793
794	errno = 0; /* strictly unnecessary */
795
796	if (!(req->flags & FLAG_CANCELLED))
797	switch (type = req->type) /* remember type for QUIT check */
798	{
799	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
800	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
801
802	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
803	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
804
805	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
806	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
807	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
808
809	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
810	case REQ_CLOSE: req->result = close (req->fd); break;
811	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
812	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
813	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
814	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
815	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
816
817	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
818	case REQ_FSYNC: req->result = fsync (req->fd); break;
819	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
820
821	case REQ_SLEEP:
822	{
823	struct timeval tv;
824
825	tv.tv_sec = req->fd;
826	tv.tv_usec = req->fd2;
827
828	req->result = select (0, 0, 0, 0, &tv);
829	}
830
831	case REQ_GROUP:
832	case REQ_NOP:
833	case REQ_QUIT:
834	break;
835
836	default:
837	req->result = ENOSYS;
838	break;
839	}	1162	}
840		1163
841	req->errorno = errno;
842
843	pthread_mutex_lock (&reslock);
844
845	req->next = 0;
846
847	if (rese)
848	{
849	rese->next = req;
850	rese = req;
851	}
852	else
853	{
854	rese = ress = req;
855
856	/* write a dummy byte to the pipe so fh becomes ready */
857	write (respipe [1], &respipe, 1);
858	}
859
860	pthread_mutex_unlock (&reslock);
861	}
862	while (type != REQ_QUIT);
863
864	return 0;
865	}
866
867	/*****************************************************************************/
868
869	static void atfork_prepare (void)
870	{
871	pthread_mutex_lock (&reqlock);
872	pthread_mutex_lock (&reslock);
873	#if !HAVE_PREADWRITE
874	pthread_mutex_lock (&preadwritelock);
875	#endif
876	#if !HAVE_READDIR_R
877	pthread_mutex_lock (&readdirlock);
878	#endif
879	}
880
881	static void atfork_parent (void)
882	{
883	#if !HAVE_READDIR_R
884	pthread_mutex_unlock (&readdirlock);
885	#endif
886	#if !HAVE_PREADWRITE
887	pthread_mutex_unlock (&preadwritelock);
888	#endif
889	pthread_mutex_unlock (&reslock);
890	pthread_mutex_unlock (&reqlock);
891	}
892
893	static void atfork_child (void)
894	{
895	aio_req prv;
896
897	started = 0;
898
899	while (reqs)
900	{
901	prv = reqs;
902	reqs = prv->next;
903	req_free (prv);
904	}
905
906	reqs = reqe = 0;
907
908	while (ress)
909	{
910	prv = ress;
911	ress = prv->next;
912	req_free (prv);
913	}
914
915	ress = rese = 0;
916
917	close (respipe [0]);
918	close (respipe [1]);
919	create_pipe ();
920
921	atfork_parent ();
922	}
923
924	#define dREQ \
925	aio_req req; \
926	\
927	if (SvOK (callback) && !SvROK (callback)) \
928	croak ("callback must be undef or of reference type"); \
929	\
930	Newz (0, req, 1, aio_cb); \
931	if (!req) \
932	croak ("out of memory during aio_req allocation"); \
933	\
934	req->callback = newSVsv (callback)
935
936	#define REQ_SEND \
937	req_send (req); \
938	\
939	if (GIMME_V != G_VOID) \
940	XPUSHs (req_sv (req, AIO_REQ_KLASS));
941
942	MODULE = IO::AIO PACKAGE = IO::AIO
943
944	PROTOTYPES: ENABLE
945
946	BOOT:
947	{
948	HV *stash = gv_stashpv ("IO::AIO", 1);
949	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
950	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
951	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
952
953	create_pipe ();
954	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955	}
956
957	void
958	min_parallel (nthreads)
959	int nthreads
960	PROTOTYPE: $
961
962	void
963	max_parallel (nthreads)
964	int nthreads
965	PROTOTYPE: $
966
967	int
968	max_outstanding (nreqs)
969	int nreqs
970	PROTOTYPE: $
971	CODE:
972	RETVAL = max_outstanding;
973	max_outstanding = nreqs;
974
975	void
976	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
977	SV * pathname
978	int flags
979	int mode
980	SV * callback
981	PROTOTYPE: $$$;$
982	PPCODE:
983	{
984	dREQ;
985
986	req->type = REQ_OPEN;	1164	req->type = EIO_DUP2;
		1165	req->int1 = close_fd;
987	req->data = newSVsv (pathname);	1166	req->sv2 = newSVsv (fh);
988	req->dataptr = SvPVbyte_nolen (req->data);	1167	req->int2 = fd;
989	req->fd = flags;
990	req->mode = mode;
991		1168
992	REQ_SEND;	1169	REQ_SEND (req);
993	}	1170	}
994		1171
995	void	1172	void
996	aio_close (fh,callback=&PL_sv_undef)	1173	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
997	SV * fh
998	SV * callback
999	PROTOTYPE: $;$
1000	ALIAS:	1174	ALIAS:
1001	aio_close = REQ_CLOSE
1002	aio_fsync = REQ_FSYNC
1003	aio_fdatasync = REQ_FDATASYNC
1004	PPCODE:
1005	{
1006	dREQ;
1007
1008	req->type = ix;
1009	req->fh = newSVsv (fh);
1010	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1011
1012	REQ_SEND (req);
1013	}
1014
1015	void
1016	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1017	SV * fh
1018	UV offset
1019	UV length
1020	SV * data
1021	UV dataoffset
1022	SV * callback
1023	ALIAS:
1024	aio_read = REQ_READ	1175	aio_read = EIO_READ
1025	aio_write = REQ_WRITE	1176	aio_write = EIO_WRITE
1026	PROTOTYPE: $$$$$;$
1027	PPCODE:	1177	PPCODE:
1028	{	1178	{
1029	aio_req req;
1030	STRLEN svlen;	1179	STRLEN svlen;
		1180	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1031	char *svptr = SvPVbyte (data, svlen);	1181	char *svptr = SvPVbyte (data, svlen);
1032		1182	UV len = SvUV (length);
1033	SvUPGRADE (data, SVt_PV);
1034	SvPOK_on (data);
1035		1183
1036	if (dataoffset < 0)	1184	if (dataoffset < 0)
1037	dataoffset += svlen;	1185	dataoffset += svlen;
1038		1186
1039	if (dataoffset < 0 || dataoffset > svlen)	1187	if (dataoffset < 0 || dataoffset > svlen)
1040	croak ("data offset outside of string");	1188	croak ("dataoffset outside of data scalar");
1041		1189
1042	if (ix == REQ_WRITE)	1190	if (ix == EIO_WRITE)
1043	{	1191	{
1044	/* write: check length and adjust. */	1192	/* write: check length and adjust. */
1045	if (length < 0 || length + dataoffset > svlen)	1193	if (!SvOK (length) || len + dataoffset > svlen)
1046	length = svlen - dataoffset;	1194	len = svlen - dataoffset;
1047	}	1195	}
1048	else	1196	else
1049	{	1197	{
1050	/* read: grow scalar as necessary */	1198	/* read: check type and grow scalar as necessary */
		1199	SvUPGRADE (data, SVt_PV);
1051	svptr = SvGROW (data, length + dataoffset);	1200	svptr = SvGROW (data, len + dataoffset + 1);
1052	}	1201	}
1053
1054	if (length < 0)
1055	croak ("length must not be negative");
1056		1202
1057	{	1203	{
1058	dREQ;	1204	dREQ;
1059		1205
1060	req->type = ix;	1206	req->type = ix;
1061	req->fh = newSVsv (fh);	1207	req->sv1 = newSVsv (fh);
1062	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1208	req->int1 = fd;
1063	: IoOFP (sv_2io (fh)));	1209	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1064	req->offset = offset;	1210	req->size = len;
1065	req->length = length;
1066	req->data = SvREFCNT_inc (data);	1211	req->sv2 = SvREFCNT_inc (data);
1067	req->dataptr = (char *)svptr + dataoffset;	1212	req->ptr2 = (char *)svptr + dataoffset;
		1213	req->stroffset = dataoffset;
1068		1214
1069	if (!SvREADONLY (data))	1215	if (!SvREADONLY (data))
1070	{	1216	{
1071	SvREADONLY_on (data);	1217	SvREADONLY_on (data);
1072	req->data2ptr = (void *)data;	1218	req->flags |= FLAG_SV2_RO_OFF;
1073	}	1219	}
1074		1220
1075	REQ_SEND;	1221	REQ_SEND;
1076	}	1222	}
1077	}	1223	}
1078		1224
1079	void	1225	void
1080	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1226	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1081	SV * out_fh	1227	ALIAS:
1082	SV * in_fh	1228	aio_readlink = EIO_READLINK
1083	UV in_offset	1229	aio_realpath = EIO_REALPATH
1084	UV length
1085	SV * callback
1086	PROTOTYPE: $$$$;$
1087	PPCODE:	1230	PPCODE:
1088	{	1231	{
		1232	dREQ;
		1233
		1234	req->type = ix;
		1235	req_set_path1 (req, pathname);
		1236
		1237	REQ_SEND;
		1238	}
		1239
		1240	void
		1241	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1242	PPCODE:
		1243	{
		1244	int ifd = s_fileno_croak (in_fh , 0);
		1245	int ofd = s_fileno_croak (out_fh, 1);
1089	dREQ;	1246	dREQ;
1090		1247
1091	req->type = REQ_SENDFILE;	1248	req->type = EIO_SENDFILE;
1092	req->fh = newSVsv (out_fh);	1249	req->sv1 = newSVsv (out_fh);
1093	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1250	req->int1 = ofd;
1094	req->fh2 = newSVsv (in_fh);	1251	req->sv2 = newSVsv (in_fh);
1095	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1252	req->int2 = ifd;
1096	req->offset = in_offset;	1253	req->offs = in_offset;
1097	req->length = length;	1254	req->size = length;
1098		1255
1099	REQ_SEND;	1256	REQ_SEND;
1100	}	1257	}
1101		1258
1102	void	1259	void
1103	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1260	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1104	SV * fh
1105	UV offset
1106	IV length
1107	SV * callback
1108	PROTOTYPE: $$$;$
1109	PPCODE:	1261	PPCODE:
1110	{	1262	{
		1263	int fd = s_fileno_croak (fh, 0);
1111	dREQ;	1264	dREQ;
1112		1265
1113	req->type = REQ_READAHEAD;	1266	req->type = EIO_READAHEAD;
1114	req->fh = newSVsv (fh);	1267	req->sv1 = newSVsv (fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1268	req->int1 = fd;
1116	req->offset = offset;	1269	req->offs = offset;
1117	req->length = length;	1270	req->size = length;
1118		1271
1119	REQ_SEND;	1272	REQ_SEND;
1120	}	1273	}
1121		1274
1122	void	1275	void
1123	aio_stat (fh_or_path,callback=&PL_sv_undef)	1276	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1124	SV * fh_or_path
1125	SV * callback
1126	ALIAS:	1277	ALIAS:
1127	aio_stat = REQ_STAT	1278	aio_stat = EIO_STAT
1128	aio_lstat = REQ_LSTAT	1279	aio_lstat = EIO_LSTAT
		1280	aio_statvfs = EIO_STATVFS
1129	PPCODE:	1281	PPCODE:
1130	{	1282	{
1131	dREQ;	1283	dREQ;
1132		1284
1133	New (0, req->statdata, 1, Stat_t);
1134	if (!req->statdata)
1135	{
1136	req_free (req);
1137	croak ("out of memory during aio_req->statdata allocation");
1138	}
1139
1140	if (SvPOK (fh_or_path))
1141	{
1142	req->type = ix;
1143	req->data = newSVsv (fh_or_path);
1144	req->dataptr = SvPVbyte_nolen (req->data);
1145	}
1146	else
1147	{
1148	req->type = REQ_FSTAT;
1149	req->fh = newSVsv (fh_or_path);	1285	req->sv1 = newSVsv (fh_or_path);
1150	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1286	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1151	}
1152
1153	REQ_SEND;	1287	REQ_SEND;
1154	}	1288	}
1155		1289
		1290	UV
		1291	major (UV dev)
		1292	ALIAS:
		1293	minor = 1
		1294	CODE:
		1295	RETVAL = ix ? major (dev) : minor (dev);
		1296	OUTPUT:
		1297	RETVAL
		1298
		1299	UV
		1300	makedev (UV maj, UV min)
		1301	CODE:
		1302	RETVAL = makedev (maj, min);
		1303	OUTPUT:
		1304	RETVAL
		1305
1156	void	1306	void
		1307	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1313	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1314	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1315
		1316	REQ_SEND;
		1317	}
		1318
		1319	void
		1320	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1321	PPCODE:
		1322	{
		1323	dREQ;
		1324
		1325	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1326	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1333	ALIAS:
		1334	aio_chmod = EIO_CHMOD
		1335	aio_mkdir = EIO_MKDIR
		1336	PPCODE:
		1337	{
		1338	dREQ;
		1339
		1340	req->int2 = mode;
		1341	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1353	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1354	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->type = EIO_READDIR;
		1366	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1367
		1368	if (flags & EIO_READDIR_DENTS)
		1369	req->int1 |= EIO_READDIR_CUSTOM2;
		1370
		1371	req_set_path1 (req, pathname);
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
1157	aio_unlink (pathname,callback=&PL_sv_undef)	1377	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1158	SV * pathname
1159	SV * callback
1160	ALIAS:	1378	ALIAS:
1161	aio_unlink = REQ_UNLINK	1379	aio_unlink = EIO_UNLINK
1162	aio_rmdir = REQ_RMDIR	1380	aio_rmdir = EIO_RMDIR
1163	aio_readdir = REQ_READDIR	1381	aio_readdir = EIO_READDIR
1164	PPCODE:	1382	PPCODE:
1165	{	1383	{
1166	dREQ;	1384	dREQ;
1167		1385
1168	req->type = ix;	1386	req->type = ix;
1169	req->data = newSVsv (pathname);	1387	req_set_path1 (req, pathname);
1170	req->dataptr = SvPVbyte_nolen (req->data);	1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1394	ALIAS:
		1395	aio_link = EIO_LINK
		1396	aio_symlink = EIO_SYMLINK
		1397	aio_rename = EIO_RENAME
		1398	PPCODE:
		1399	{
		1400	dREQ;
		1401	eio_wd wd2 = 0;
		1402
		1403	req->type = ix;
		1404	req_set_path1 (req, oldpath);
		1405	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1406	req->int3 = (long)wd2;
1171		1407
1172	REQ_SEND;	1408	REQ_SEND;
1173	}	1409	}
1174		1410
1175	void	1411	void
1176	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1412	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1177	SV * oldpath
1178	SV * newpath
1179	SV * callback
1180	ALIAS:
1181	aio_link = REQ_LINK
1182	aio_symlink = REQ_SYMLINK
1183	aio_rename = REQ_RENAME
1184	PPCODE:	1413	PPCODE:
1185	{	1414	{
1186	dREQ;	1415	dREQ;
1187		1416
1188	req->type = ix;	1417	req->type = EIO_MKNOD;
1189	req->fh = newSVsv (oldpath);	1418	req->int2 = (mode_t)mode;
1190	req->data2ptr = SvPVbyte_nolen (req->fh);	1419	req->offs = dev;
1191	req->data = newSVsv (newpath);	1420	req_set_path1 (req, pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);
1193		1421
1194	REQ_SEND;	1422	REQ_SEND;
1195	}	1423	}
1196		1424
1197	void	1425	void
		1426	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1427	ALIAS:
		1428	aio_mtouch = EIO_MTOUCH
		1429	aio_msync = EIO_MSYNC
		1430	PPCODE:
		1431	{
		1432	STRLEN svlen;
		1433	char *svptr = SvPVbyte (data, svlen);
		1434	UV len = SvUV (length);
		1435
		1436	if (offset < 0)
		1437	offset += svlen;
		1438
		1439	if (offset < 0 || offset > svlen)
		1440	croak ("offset outside of scalar");
		1441
		1442	if (!SvOK (length) || len + offset > svlen)
		1443	len = svlen - offset;
		1444
		1445	{
		1446	dREQ;
		1447
		1448	req->type = ix;
		1449	req->sv2 = SvREFCNT_inc (data);
		1450	req->ptr2 = (char *)svptr + offset;
		1451	req->size = len;
		1452	req->int1 = flags;
		1453
		1454	REQ_SEND;
		1455	}
		1456	}
		1457
		1458	void
		1459	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1460	PPCODE:
		1461	{
		1462	STRLEN svlen;
		1463	char *svptr = SvPVbyte (data, svlen);
		1464	UV len = SvUV (length);
		1465
		1466	if (offset < 0)
		1467	offset += svlen;
		1468
		1469	if (offset < 0 || offset > svlen)
		1470	croak ("offset outside of scalar");
		1471
		1472	if (!SvOK (length) || len + offset > svlen)
		1473	len = svlen - offset;
		1474
		1475	{
		1476	dREQ;
		1477
		1478	req->type = EIO_MLOCK;
		1479	req->sv2 = SvREFCNT_inc (data);
		1480	req->ptr2 = (char *)svptr + offset;
		1481	req->size = len;
		1482
		1483	REQ_SEND;
		1484	}
		1485	}
		1486
		1487	void
		1488	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1489	PPCODE:
		1490	{
		1491	dREQ;
		1492
		1493	req->type = EIO_MLOCKALL;
		1494	req->int1 = flags;
		1495
		1496	REQ_SEND;
		1497	}
		1498
		1499	void
1198	aio_sleep (delay,callback=&PL_sv_undef)	1500	aio_busy (double delay, SV *callback=&PL_sv_undef)
1199	double delay
1200	SV * callback
1201	PPCODE:	1501	PPCODE:
1202	{	1502	{
1203	dREQ;	1503	dREQ;
1204		1504
1205	req->type = REQ_SLEEP;	1505	req->type = EIO_BUSY;
1206	req->fd = delay < 0. ? 0 : delay;	1506	req->nv1 = delay < 0. ? 0. : delay;
1207	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1208		1507
1209	REQ_SEND;	1508	REQ_SEND;
1210	}	1509	}
1211		1510
1212	void	1511	void
1213	aio_group (callback=&PL_sv_undef)	1512	aio_group (SV *callback=&PL_sv_undef)
1214	SV * callback
1215	PROTOTYPE: ;$
1216	PPCODE:	1513	PPCODE:
1217	{	1514	{
1218	dREQ;	1515	dREQ;
		1516
1219	req->type = REQ_GROUP;	1517	req->type = EIO_GROUP;
		1518
1220	req_send (req);	1519	req_submit (req);
1221	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1520	XPUSHs (req_sv (req, aio_grp_stash));
1222	}	1521	}
1223		1522
1224	void	1523	void
1225	aio_nop (callback=&PL_sv_undef)	1524	aio_nop (SV *callback=&PL_sv_undef)
1226	SV * callback	1525	ALIAS:
		1526	aio_nop = EIO_NOP
		1527	aio_sync = EIO_SYNC
1227	PPCODE:	1528	PPCODE:
1228	{	1529	{
1229	dREQ;	1530	dREQ;
1230		1531
1231	req->type = REQ_NOP;	1532	req->type = ix;
1232		1533
1233	REQ_SEND;	1534	REQ_SEND;
1234	}	1535	}
1235		1536
		1537	int
		1538	aioreq_pri (int pri = 0)
		1539	CODE:
		1540	RETVAL = next_pri;
		1541	if (items > 0)
		1542	{
		1543	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1544	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1545	next_pri = pri;
		1546	}
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void
		1551	aioreq_nice (int nice = 0)
		1552	CODE:
		1553	nice = next_pri - nice;
		1554	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1555	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1556	next_pri = nice;
		1557
1236	void	1558	void
1237	flush ()	1559	flush ()
1238	PROTOTYPE:
1239	CODE:	1560	CODE:
1240	while (nreqs)	1561	while (eio_nreqs ())
1241	{	1562	{
1242	poll_wait ();	1563	poll_wait ();
1243	poll_cb ();	1564	poll_cb ();
1244	}	1565	}
1245		1566
1246	void
1247	poll()
1248	PROTOTYPE:
1249	CODE:
1250	if (nreqs)
1251	{
1252	poll_wait ();
1253	poll_cb ();
1254	}
1255
1256	int	1567	int
1257	poll_fileno()	1568	poll ()
1258	PROTOTYPE:
1259	CODE:	1569	CODE:
1260	RETVAL = respipe [0];	1570	poll_wait ();
1261	OUTPUT:
1262	RETVAL
1263
1264	int
1265	poll_cb(...)
1266	PROTOTYPE:
1267	CODE:
1268	RETVAL = poll_cb ();	1571	RETVAL = poll_cb ();
1269	OUTPUT:	1572	OUTPUT:
1270	RETVAL	1573	RETVAL
1271		1574
1272	void
1273	poll_wait()
1274	PROTOTYPE:
1275	CODE:
1276	if (nreqs)
1277	poll_wait ();
1278
1279	int	1575	int
1280	nreqs()	1576	poll_fileno ()
1281	PROTOTYPE:
1282	CODE:	1577	CODE:
1283	RETVAL = nreqs;	1578	RETVAL = s_epipe_fd (&respipe);
1284	OUTPUT:	1579	OUTPUT:
1285	RETVAL	1580	RETVAL
1286		1581
		1582	int
		1583	poll_cb (...)
		1584	PROTOTYPE:
		1585	CODE:
		1586	RETVAL = poll_cb ();
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	void
		1591	poll_wait ()
		1592	CODE:
		1593	poll_wait ();
		1594
		1595	int
		1596	nreqs ()
		1597	CODE:
		1598	RETVAL = eio_nreqs ();
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	int
		1603	nready ()
		1604	CODE:
		1605	RETVAL = eio_nready ();
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609	int
		1610	npending ()
		1611	CODE:
		1612	RETVAL = eio_npending ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	nthreads ()
		1618	CODE:
		1619	RETVAL = eio_nthreads ();
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	int
		1624	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1625	CODE:
		1626	RETVAL = posix_fadvise (fh, offset, length, advice);
		1627	OUTPUT:
		1628	RETVAL
		1629
		1630	IV
		1631	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1632	CODE:
		1633	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1634	OUTPUT:
		1635	RETVAL
		1636
		1637	void
		1638	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1639	PPCODE:
		1640	sv_unmagic (scalar, MMAP_MAGIC);
		1641	{
		1642	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1643	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1644	if (addr == (void *)-1)
		1645	XSRETURN_NO;
		1646
		1647	sv_force_normal (scalar);
		1648
		1649	/* we store the length in mg_obj, as namlen is I32 :/ */
		1650	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1651	->mg_obj = (SV *)length;
		1652
		1653	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1654
		1655	if (!(prot & PROT_WRITE))
		1656	SvREADONLY_on (scalar);
		1657
		1658	if (SvLEN (scalar))
		1659	Safefree (SvPVX (scalar));
		1660
		1661	SvPVX (scalar) = (char *)addr;
		1662	SvCUR_set (scalar, length);
		1663	SvLEN_set (scalar, 0);
		1664	SvPOK_only (scalar);
		1665
		1666	XSRETURN_YES;
		1667	}
		1668
		1669	void
		1670	munmap (SV *scalar)
		1671	CODE:
		1672	sv_unmagic (scalar, MMAP_MAGIC);
		1673
		1674	int
		1675	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1676	ALIAS:
		1677	mprotect = 1
		1678	CODE:
		1679	{
		1680	STRLEN svlen;
		1681	void *addr = SvPVbyte (scalar, svlen);
		1682	size_t len = SvUV (length);
		1683
		1684	if (offset < 0)
		1685	offset += svlen;
		1686
		1687	if (offset < 0 || offset > svlen)
		1688	croak ("offset outside of scalar");
		1689
		1690	if (!SvOK (length) || len + offset > svlen)
		1691	len = svlen - offset;
		1692
		1693	addr = (void *)(((intptr_t)addr) + offset);
		1694	eio_page_align (&addr, &len);
		1695
		1696	switch (ix)
		1697	{
		1698	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1699	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1700	}
		1701	}
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
		1706	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1707	CODE:
		1708	{
		1709	STRLEN svlen;
		1710	void *addr = SvPVbyte (scalar, svlen);
		1711	size_t len = SvUV (length);
		1712
		1713	if (offset < 0)
		1714	offset += svlen;
		1715
		1716	if (offset < 0 || offset > svlen)
		1717	croak ("offset outside of scalar");
		1718
		1719	if (!SvOK (length) || len + offset > svlen)
		1720	len = svlen - offset;
		1721
		1722	addr = (void *)(((intptr_t)addr) + offset);
		1723	eio_page_align (&addr, &len);
		1724	#if _POSIX_MEMLOCK_RANGE
		1725	RETVAL = munlock (addr, len);
		1726	#else
		1727	RETVAL = ((errno = ENOSYS), -1);
		1728	#endif
		1729	}
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	munlockall ()
		1735	CODE:
		1736	#if _POSIX_MEMLOCK
		1737	munlockall ();
		1738	#else
		1739	RETVAL = -1;
		1740	errno = ENOSYS;
		1741	#endif
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void _on_next_submit (SV *cb)
		1746	CODE:
		1747	SvREFCNT_dec (on_next_submit);
		1748	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1749
1287	PROTOTYPES: DISABLE	1750	PROTOTYPES: DISABLE
1288		1751
		1752	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1753
		1754	BOOT:
		1755	{
		1756	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1757	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1758	}
		1759
		1760	void
		1761	DESTROY (SV *self)
		1762	CODE:
		1763	{
		1764	aio_wd wd = SvAIO_WD (self);
		1765	#if HAVE_AT
		1766	SV *callback = &PL_sv_undef;
		1767	dREQ; /* clobbers next_pri :/ */
		1768	req->type = EIO_WD_CLOSE;
		1769	req->wd = wd;
		1770	REQ_SEND;
		1771	#else
		1772	eio_wd_close_sync (wd);
		1773	#endif
		1774	}
		1775
1289	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1776	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290		1777
1291	void	1778	void
1292	cancel (aio_req_ornot req)	1779	cancel (aio_req_ornot req)
1293	PROTOTYPE:
1294	CODE:	1780	CODE:
1295	req_cancel (req);	1781	eio_cancel (req);
1296		1782
1297	void	1783	void
1298	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1784	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1299	CODE:	1785	PPCODE:
		1786	{
		1787	if (GIMME_V != G_VOID)
		1788	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1789
		1790	if (items > 1)
		1791	{
		1792	SV *cb_cv =get_cb (callback);
		1793
1300	SvREFCNT_dec (req->callback);	1794	SvREFCNT_dec (req->callback);
1301	req->callback = newSVsv (callback);	1795	req->callback = SvREFCNT_inc (cb_cv);
		1796	}
		1797	}
1302		1798
1303	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1799	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1304		1800
1305	void	1801	void
1306	add (aio_req grp, ...)	1802	add (aio_req grp, ...)
1307	PPCODE:	1803	PPCODE:
1308	{	1804	{
1309	int i;	1805	int i;
1310	aio_req req;
1311		1806
1312	if (grp->fd == 2)	1807	if (grp->int1 == 2)
1313	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1808	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1314		1809
1315	for (i = 1; i < items; ++i )	1810	for (i = 1; i < items; ++i )
1316	{	1811	{
		1812	aio_req req;
		1813
1317	if (GIMME_V != G_VOID)	1814	if (GIMME_V != G_VOID)
1318	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1815	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1319		1816
1320	req = SvAIO_REQ (ST (i));	1817	req = SvAIO_REQ (ST (i));
1321		1818
1322	if (req)	1819	if (req)
1323	{	1820	eio_grp_add (grp, req);
1324	++grp->length;
1325	req->grp = grp;
1326
1327	req->grp_prev = 0;
1328	req->grp_next = grp->grp_first;
1329
1330	if (grp->grp_first)
1331	grp->grp_first->grp_prev = req;
1332
1333	grp->grp_first = req;
1334	}
1335	}	1821	}
1336	}	1822	}
		1823
		1824	void
		1825	cancel_subs (aio_req_ornot req)
		1826	CODE:
		1827	req_cancel_subs (req);
1337		1828
1338	void	1829	void
1339	result (aio_req grp, ...)	1830	result (aio_req grp, ...)
1340	CODE:	1831	CODE:
1341	{	1832	{
1342	int i;	1833	int i;
		1834	AV *av;
		1835
		1836	grp->errorno = errno;
		1837
1343	AV *av = newAV ();	1838	av = newAV ();
		1839	av_extend (av, items - 1);
1344		1840
1345	for (i = 1; i < items; ++i )	1841	for (i = 1; i < items; ++i )
1346	av_push (av, newSVsv (ST (i)));	1842	av_push (av, newSVsv (ST (i)));
1347		1843
1348	SvREFCNT_dec (grp->data);	1844	SvREFCNT_dec (grp->sv1);
1349	grp->data = (SV *)av;	1845	grp->sv1 = (SV *)av;
1350	}	1846	}
1351		1847
1352	void	1848	void
		1849	errno (aio_req grp, int errorno = errno)
		1850	CODE:
		1851	grp->errorno = errorno;
		1852
		1853	void
1353	feed_limit (aio_req grp, int limit)	1854	limit (aio_req grp, int limit)
1354	CODE:	1855	CODE:
1355	grp->fd2 = limit;	1856	eio_grp_limit (grp, limit);
1356	aio_grp_feed (grp);
1357		1857
1358	void	1858	void
1359	feed (aio_req grp, SV *callback=&PL_sv_undef)	1859	feed (aio_req grp, SV *callback=&PL_sv_undef)
1360	CODE:	1860	CODE:
1361	{	1861	{
1362	SvREFCNT_dec (grp->fh2);	1862	SvREFCNT_dec (grp->sv2);
1363	grp->fh2 = newSVsv (callback);	1863	grp->sv2 = newSVsv (callback);
		1864	grp->feed = aio_grp_feed;
1364		1865
1365	if (grp->fd2 <= 0)	1866	if (grp->int2 <= 0)
1366	grp->fd2 = 2;	1867	grp->int2 = 2;
1367		1868
1368	aio_grp_feed (grp);	1869	eio_grp_limit (grp, grp->int2);
1369	}	1870	}
1370		1871

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