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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.53 by root, Mon Oct 23 00:17:07 2006 UTC vs.
Revision 1.192 by root, Sun Jul 24 03:32:52 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;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
34	# else	294	# else
35	# error sendfile support requested but not available	295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	296	# endif
37	#endif	297	#endif
38		298	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	299	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	300	#endif
		301	#ifndef MAP_LOCKED
		302	# define MAP_LOCKED 0
		303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
43		313
44	#if __ia64	314	#ifndef makedev
45	# define STACKSIZE 65536	315	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	316	#endif
47	# define STACKSIZE 8192	317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
		323
		324	#ifndef PAGESIZE
		325	# define PAGESIZE sysconf (_SC_PAGESIZE)
48	#endif	326	#endif
49		327
50	enum {	328	enum {
51	REQ_QUIT,	329	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	};	330	};
63		331
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 cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
93		334
94	static int started, wanted;	335	static SV *on_next_submit;
95	static volatile int nreqs;	336	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	337	static int max_outstanding;
97	static int respipe [2];
98		338
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	339	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		340
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	341	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	342	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
108		355
109	/* must be called at most once */	356	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
111	{	358	{
112	if (!req->self)	359	if (!req->self)
113	{	360	{
114	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	363	}
117		364
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	366	}
120		367
121	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
122	{	369	{
123	MAGIC *mg;	370	MAGIC *mg;
124		371
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
127		377
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		379
130	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	381	}
132		382
133	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
134	{	384	{
135	while (grp->length < grp->fd2)	385	if (grp->sv2 && SvOK (grp->sv2))
136	{	386	{
137	int old_len = grp->length;	387	dSP;
138		388
139	if (grp->fh2 && SvOK (grp->fh2))	389	ENTER;
		390	SAVETMPS;
		391	PUSHMARK (SP);
		392	XPUSHs (req_sv (grp, aio_grp_stash));
		393	PUTBACK;
		394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		395	SPAGAIN;
		396	FREETMPS;
		397	LEAVE;
		398	}
		399	}
		400
		401	static void req_submit (eio_req *req)
		402	{
		403	eio_submit (req);
		404
		405	if (expect_false (on_next_submit))
		406	{
		407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
		409
		410	on_next_submit = 0;
		411
		412	PUSHMARK (SP);
		413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
		415	}
		416	}
		417
		418	static int req_invoke (eio_req *req)
		419	{
		420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
		422
		423	if (!EIO_CANCELLED (req) && req->callback)
		424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
		429	ENTER;
		430	SAVETMPS;
		431	PUSHMARK (SP);
		432	EXTEND (SP, 1);
		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
140	{	436	{
141	dSP;	437	sv_result = sv_result_cache; sv_result_cache = 0;
142		438	SvIV_set (sv_result, req->result);
143	ENTER;	439	SvIOK_only (sv_result);
144	SAVETMPS;
145	PUSHMARK (SP);
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
147	PUTBACK;
148	call_sv (grp->fh2, G_VOID | G_EVAL);
149	SPAGAIN;
150	FREETMPS;
151	LEAVE;
152	}	440	}
153		441	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	442	{
157	SvREFCNT_dec (grp->fh2);	443	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	444	SvREADONLY_on (sv_result);
159	break;
160	}	445	}
		446
		447	switch (req->type)
		448	{
		449	case EIO_READDIR:
		450	{
		451	SV *rv = &PL_sv_undef;
		452
		453	if (req->result >= 0)
		454	{
		455	int i;
		456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		458	AV *av = newAV ();
		459
		460	av_extend (av, req->result - 1);
		461
		462	for (i = 0; i < req->result; ++i)
		463	{
		464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
		488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
		496	names += SvCUR (name) + 1;
		497	}
		498	}
		499
		500	rv = sv_2mortal (newRV_noinc ((SV *)av));
		501	}
		502
		503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		507	}
		508	break;
		509
		510	case EIO_OPEN:
		511	{
		512	/* convert fd to fh */
		513	SV *fh = &PL_sv_undef;
		514
		515	if (req->result >= 0)
		516	{
		517	GV *gv = (GV *)sv_newmortal ();
		518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
		524
		525	symlen = snprintf (
		526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
		537	PUSHs (fh);
		538	}
		539	break;
		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
		573	case EIO_GROUP:
		574	req->int1 = 2; /* mark group as finished */
		575
		576	if (req->sv1)
		577	{
		578	int i;
		579	AV *av = (AV *)req->sv1;
		580
		581	EXTEND (SP, AvFILL (av) + 1);
		582	for (i = 0; i <= AvFILL (av); ++i)
		583	PUSHs (*av_fetch (av, i, 0));
		584	}
		585	break;
		586
		587	case EIO_NOP:
		588	case EIO_BUSY:
		589	break;
		590
		591	case EIO_READLINK:
		592	case EIO_REALPATH:
		593	if (req->result > 0)
		594	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		595	break;
		596
		597	case EIO_STAT:
		598	case EIO_LSTAT:
		599	case EIO_FSTAT:
		600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		604	PUSHs (sv_result);
		605	break;
		606
		607	case EIO_READ:
		608	{
		609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		610	*SvEND (req->sv2) = 0;
		611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
		615	break;
		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
		622	default:
		623	PUSHs (sv_result);
		624	break;
		625	}
		626
		627	errno = req->errorno;
		628
		629	PUTBACK;
		630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
		637
		638	FREETMPS;
		639	LEAVE;
		640
		641	PUTBACK;
161	}	642	}
162	}
163		643
164	static void aio_grp_dec (aio_req grp)	644	return !!SvTRUE (ERRSV);
165	{
166	--grp->length;
167
168	/* call feeder, if applicable */
169	aio_grp_feed (grp);
170
171	/* finish, if done */
172	if (!grp->length && grp->fd)
173	{
174	req_invoke (grp);
175	req_free (grp);
176	}
177	}	645	}
178		646
179	static void poll_wait ()
180	{
181	if (nreqs && !ress)
182	{
183	fd_set rfd;
184	FD_ZERO(&rfd);
185	FD_SET(respipe [0], &rfd);
186
187	select (respipe [0] + 1, &rfd, 0, 0, 0);
188	}
189	}
190
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_SLEEP:
265	break;
266
267	default:
268	PUSHs (sv_2mortal (newSViv (req->result)));
269	break;
270	}
271
272
273	PUTBACK;
274	call_sv (req->callback, G_VOID | G_EVAL);
275	SPAGAIN;
276
277	FREETMPS;
278	LEAVE;
279
280	errno = errorno;
281
282	if (SvTRUE (ERRSV))
283	{
284	req_free (req);
285	croak (0);
286	}
287	}
288
289	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
290	{	648	{
291	if (req->grp)
292	{
293	aio_req grp = req->grp;
294
295	/* unlink request */
296	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
297	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
298
299	if (grp->grp_first == req)
300	grp->grp_first = req->grp_next;
301
302	aio_grp_dec (grp);
303	}
304
305	if (req->self)	649	if (req->self)
306	{	650	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
309	}	653	}
310		654
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	655	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	656	SvREFCNT_dec (req->sv2);
314	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316
317	if (req->type == REQ_READDIR && req->result >= 0)
318	free (req->data2ptr);
319		658
320	Safefree (req);	659	Safefree (req);
321	}	660	}
322		661
323	static void req_cancel (aio_req req)	662	static void req_cancel_subs (aio_req grp)
324	{	663	{
325	req->cancelled = 1;
326
327	if (req->type == REQ_GROUP)	664	if (grp->type != EIO_GROUP)
		665	return;
		666
		667	SvREFCNT_dec (grp->sv2);
		668	grp->sv2 = 0;
		669
		670	eio_grp_cancel (grp);
		671	}
		672
		673	static void create_respipe (void)
		674	{
		675	if (s_epipe_renew (&respipe))
		676	croak ("IO::AIO: unable to initialize result pipe");
		677	}
		678
		679	static void poll_wait (void)
		680	{
		681	while (eio_nreqs ())
328	{	682	{
329	aio_req sub;	683	int size;
330		684
331	for (sub = req->grp_first; sub; sub = sub->grp_next)	685	X_LOCK (reslock);
332	req_cancel (sub);	686	size = res_queue.size;
		687	X_UNLOCK (reslock);
		688
		689	if (size)
		690	return;
		691
		692	etp_maybe_start_thread ();
		693
		694	s_epipe_wait (&respipe);
333	}	695	}
334	}	696	}
335		697
336	static int poll_cb ()	698	static int poll_cb (void)
337	{	699	{
338	dSP;
339	int count = 0;
340	int do_croak = 0;
341	aio_req req;
342
343	for (;;)	700	for (;;)
344	{	701	{
345	pthread_mutex_lock (&reslock);	702	int res = eio_poll ();
346	req = ress;
347		703
348	if (req)	704	if (res > 0)
349	{
350	ress = req->next;
351
352	if (!ress)
353	{
354	/* read any signals sent by the worker threads */
355	char buf [32];
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}
361	}
362
363	pthread_mutex_unlock (&reslock);
364
365	if (!req)
366	break;	705	croak (0);
367		706
368	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
369		709
370	if (req->type == REQ_QUIT)	710	poll_wait ();
371	started--;
372	else if (req->type == REQ_GROUP && req->length)
373	{
374	req->fd = 1; /* mark request as delayed */
375	continue;
376	}
377	else
378	{
379	if (req->type == REQ_READ)
380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
381
382	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
383	SvREADONLY_off (req->data);
384
385	if (req->statdata)
386	{
387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
388	PL_laststatval = req->result;
389	PL_statcache = *(req->statdata);
390	}
391
392	req_invoke (req);
393
394	count++;
395	}
396
397	req_free (req);
398	}	711	}
399
400	return count;
401	}	712	}
402		713
403	static void *aio_proc(void *arg);	714	static void ecb_cold
404		715	reinit (void)
405	static void start_thread (void)
406	{	716	{
407	sigset_t fullsigset, oldsigset;	717	create_respipe ();
408	pthread_t tid;
409	pthread_attr_t attr;
410		718
411	pthread_attr_init (&attr);	719	if (eio_init (want_poll, done_poll) < 0)
412	pthread_attr_setstacksize (&attr, STACKSIZE);	720	croak ("IO::AIO: unable to initialise eio library");
413	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
414
415	sigfillset (&fullsigset);
416	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
417
418	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
419	started++;
420
421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
422	}
423
424	static void req_send (aio_req req)
425	{
426	while (started < wanted && nreqs >= started)
427	start_thread ();
428
429	++nreqs;
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{
437	reqe->next = req;
438	reqe = req;
439	}
440	else
441	reqe = reqs = req;
442
443	pthread_cond_signal (&reqwait);
444	pthread_mutex_unlock (&reqlock);
445
446	if (nreqs > max_outstanding)
447	for (;;)
448	{
449	poll_cb ();
450
451	if (nreqs <= max_outstanding)
452	break;
453
454	poll_wait ();
455	}
456	}
457
458	static void end_thread (void)
459	{
460	aio_req req;
461	Newz (0, req, 1, aio_cb);
462	req->type = REQ_QUIT;
463
464	req_send (req);
465	}
466
467	static void min_parallel (int nthreads)
468	{
469	if (wanted < nthreads)
470	wanted = nthreads;
471	}
472
473	static void max_parallel (int nthreads)
474	{
475	int cur = started;
476
477	if (wanted > nthreads)
478	wanted = nthreads;
479
480	while (cur > wanted)
481	{
482	end_thread ();
483	cur--;
484	}
485
486	while (started > wanted)
487	{
488	poll_wait ();
489	poll_cb ();
490	}
491	}
492
493	static void create_pipe ()
494	{
495	if (pipe (respipe))
496	croak ("unable to initialize result pipe");
497
498	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
499	croak ("cannot set result pipe to nonblocking mode");
500
501	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
502	croak ("cannot set result pipe to nonblocking mode");
503	}	721	}
504		722
505	/*****************************************************************************/	723	/*****************************************************************************/
506	/* work around various missing functions */
507		724
508	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
509	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
510	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
511
512	/*
513	* make our pread/pwrite safe against themselves, but not against
514	* normal read/write by using a mutex. slows down execution a lot,
515	* but that's your problem, not mine.
516	*/
517	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
518
519	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
520	{
521	ssize_t res;
522	off_t ooffset;
523
524	pthread_mutex_lock (&preadwritelock);
525	ooffset = lseek (fd, 0, SEEK_CUR);
526	lseek (fd, offset, SEEK_SET);
527	res = read (fd, buf, count);
528	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);
530
531	return res;
532	}
533
534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
535	{
536	ssize_t res;
537	off_t ooffset;
538
539	pthread_mutex_lock (&preadwritelock);
540	ooffset = lseek (fd, 0, SEEK_CUR);
541	lseek (fd, offset, SEEK_SET);
542	res = write (fd, buf, count);
543	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);
545
546	return res;
547	}
548	#endif
549
550	#if !HAVE_FDATASYNC
551	# define fdatasync fsync
552	#endif
553
554	#if !HAVE_READAHEAD
555	# define readahead aio_readahead
556
557	static ssize_t readahead (int fd, off_t offset, size_t count)
558	{
559	char readahead_buf[4096];
560
561	while (count > 0)
562	{
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
564
565	pread (fd, readahead_buf, len, offset);
566	offset += len;
567	count -= len;
568	}
569
570	errno = 0;
571	}
572	#endif
573
574	#if !HAVE_READDIR_R
575	# define readdir_r aio_readdir_r
576
577	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
578
579	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
580	{
581	struct dirent *e;
582	int errorno;
583
584	pthread_mutex_lock (&readdirlock);
585
586	e = readdir (dirp);
587	errorno = errno;
588
589	if (e)
590	{
591	*res = ent;
592	strcpy (ent->d_name, e->d_name);
593	}
594	else
595	*res = 0;
596
597	pthread_mutex_unlock (&readdirlock);
598
599	errno = errorno;
600	return e ? 0 : -1;
601	}
602	#endif
603
604	/* sendfile always needs emulation */
605	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
606	{
607	ssize_t res;
608
609	if (!count)
610	return 0;
611
612	#if HAVE_SENDFILE
613	# if __linux
614	res = sendfile (ofd, ifd, &offset, count);
615
616	# elif __freebsd
617	/*
618	* Of course, the freebsd sendfile is a dire hack with no thoughts
619	* wasted on making it similar to other I/O functions.
620	*/
621	{
622	off_t sbytes;
623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
624
625	if (res < 0 && sbytes)
626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
627	res = sbytes;
628	}
629
630	# elif __hpux
631	res = sendfile (ofd, ifd, offset, count, 0, 0);
632
633	# elif __solaris
634	{
635	struct sendfilevec vec;
636	size_t sbytes;
637
638	vec.sfv_fd = ifd;
639	vec.sfv_flag = 0;
640	vec.sfv_off = offset;
641	vec.sfv_len = count;
642
643	res = sendfilev (ofd, &vec, 1, &sbytes);
644
645	if (res < 0 && sbytes)
646	res = sbytes;
647	}
648
649	# endif	728	#endif
650	#else
651	res = -1;
652	errno = ENOSYS;
653	#endif
654		729
655	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
656	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
657	#if __solaris	732	# define PROT_NONE 0
658	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
659	#endif	737	#endif
660	)
661	)
662	{
663	/* emulate sendfile. this is a major pain in the ass */
664	char buf[4096];
665	res = 0;
666		738
667	while (count)	739	#define MMAP_MAGIC PERL_MAGIC_ext
668	{
669	ssize_t cnt;
670
671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
672		740
673	if (cnt <= 0)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
674	{
675	if (cnt && !res) res = -1;
676	break;
677	}
678
679	cnt = write (ofd, buf, cnt);
680
681	if (cnt <= 0)
682	{
683	if (cnt && !res) res = -1;
684	break;
685	}
686
687	offset += cnt;
688	res += cnt;
689	count -= cnt;
690	}
691	}
692
693	return res;
694	}
695
696	/* read a full directory */
697	static int scandir_ (const char *path, void **namesp)
698	{	742	{
699	DIR *dirp = opendir (path);	743	int old_errno = errno;
700	union	744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
701	{
702	struct dirent d;
703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
704	} u;
705	struct dirent *entp;
706	char *name, *names;
707	int memlen = 4096;
708	int memofs = 0;
709	int res = 0;
710	int errorno;
711
712	if (!dirp)
713	return -1;
714
715	names = malloc (memlen);
716
717	for (;;)
718	{
719	errno = 0, readdir_r (dirp, &u.d, &entp);
720
721	if (!entp)
722	break;
723
724	name = entp->d_name;
725
726	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
727	{
728	int len = strlen (name) + 1;
729
730	res++;
731
732	while (memofs + len > memlen)
733	{
734	memlen *= 2;
735	names = realloc (names, memlen);
736	if (!names)
737	break;
738	}
739
740	memcpy (names + memofs, name, len);
741	memofs += len;
742	}
743	}
744
745	errorno = errno;	745	errno = old_errno;
746	closedir (dirp);
747		746
748	if (errorno)	747	mg->mg_obj = 0; /* just in case */
749	{
750	free (names);
751	errno = errorno;
752	res = -1;
753	}
754		748
755	*namesp = (void *)names;	749	SvREADONLY_off (sv);
		750
		751	if (SvPVX (sv) != mg->mg_ptr)
		752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		753
		754	SvCUR_set (sv, 0);
		755	SvPVX (sv) = 0;
		756	SvOK_off (sv);
		757
756	return res;	758	return 0;
757	}	759	}
		760
		761	static MGVTBL mmap_vtbl = {
		762	0, 0, 0, 0, mmap_free
		763	};
758		764
759	/*****************************************************************************/	765	/*****************************************************************************/
760		766
761	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
762	{	768	{
763	aio_req req;	769	SvGETMAGIC (cb_sv);
764	int type;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
765
766	do
767	{
768	pthread_mutex_lock (&reqlock);
769
770	for (;;)
771	{
772	req = reqs;
773
774	if (reqs)
775	{
776	reqs = reqs->next;
777	if (!reqs) reqe = 0;
778	}
779
780	if (req)
781	break;
782
783	pthread_cond_wait (&reqwait, &reqlock);
784	}
785
786	pthread_mutex_unlock (&reqlock);
787
788	errno = 0; /* strictly unnecessary */
789
790	if (!req->cancelled)
791	switch (type = req->type) /* remember type for QUIT check */
792	{
793	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
794	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
795
796	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
797	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
798
799	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
800	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
801	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
802
803	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
804	case REQ_CLOSE: req->result = close (req->fd); break;
805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
806	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
809	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
810
811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
812	case REQ_FSYNC: req->result = fsync (req->fd); break;
813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
814
815	case REQ_SLEEP:
816	{
817	struct timeval tv;
818
819	tv.tv_sec = req->fd;
820	tv.tv_usec = req->fd2;
821
822	req->result = select (0, 0, 0, 0, &tv);
823	}
824
825	case REQ_QUIT:
826	break;
827
828	default:
829	req->result = ENOSYS;
830	break;
831	}
832
833	req->errorno = errno;
834
835	pthread_mutex_lock (&reslock);
836
837	req->next = 0;
838
839	if (rese)
840	{
841	rese->next = req;
842	rese = req;
843	}
844	else
845	{
846	rese = ress = req;
847
848	/* write a dummy byte to the pipe so fh becomes ready */
849	write (respipe [1], &respipe, 1);
850	}
851
852	pthread_mutex_unlock (&reslock);
853	}
854	while (type != REQ_QUIT);
855
856	return 0;
857	}
858
859	/*****************************************************************************/
860
861	static void atfork_prepare (void)
862	{
863	pthread_mutex_lock (&reqlock);
864	pthread_mutex_lock (&reslock);
865	#if !HAVE_PREADWRITE
866	pthread_mutex_lock (&preadwritelock);
867	#endif
868	#if !HAVE_READDIR_R
869	pthread_mutex_lock (&readdirlock);
870	#endif
871	}
872
873	static void atfork_parent (void)
874	{
875	#if !HAVE_READDIR_R
876	pthread_mutex_unlock (&readdirlock);
877	#endif
878	#if !HAVE_PREADWRITE
879	pthread_mutex_unlock (&preadwritelock);
880	#endif
881	pthread_mutex_unlock (&reslock);
882	pthread_mutex_unlock (&reqlock);
883	}
884
885	static void atfork_child (void)
886	{
887	aio_req prv;
888
889	started = 0;
890
891	while (reqs)
892	{
893	prv = reqs;
894	reqs = prv->next;
895	req_free (prv);
896	}
897
898	reqs = reqe = 0;
899
900	while (ress)
901	{
902	prv = ress;
903	ress = prv->next;
904	req_free (prv);
905	}
906
907	ress = rese = 0;
908
909	close (respipe [0]);
910	close (respipe [1]);
911	create_pipe ();
912
913	atfork_parent ();
914	}	771	}
915		772
916	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
917	aio_req req; \	775	aio_req req; \
		776	int req_pri = next_pri; \
		777	next_pri = EIO_PRI_DEFAULT; \
918	\	778	\
919	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
920	croak ("callback must be undef or of reference type"); \
921	\	780	\
922	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
923	if (!req) \	782	if (!req) \
924	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
925	\	784	\
926	req->callback = newSVsv (callback)	785	req->callback = SvREFCNT_inc (cb_cv); \
		786	req->pri = req_pri
927		787
928	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
929	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
930	\	792	\
931	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
932	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
933		795
934	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
935		797
936	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
937		799
938	BOOT:	800	BOOT:
939	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
940	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
943	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
944		922
945	create_pipe ();	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
947	}
948		925
		926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		927
		928	reinit ();
		929	}
		930
949	void	931	void
950	min_parallel (nthreads)	932	reinit ()
951	int nthreads	933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
		938	max_poll_reqs (unsigned int nreqs)
952	PROTOTYPE: $	939	PROTOTYPE: $
		940	CODE:
		941	eio_set_max_poll_reqs (nreqs);
953		942
954	void	943	void
955	max_parallel (nthreads)	944	max_poll_time (double nseconds)
956	int nthreads
957	PROTOTYPE: $	945	PROTOTYPE: $
958
959	int
960	max_outstanding (nreqs)
961	int nreqs
962	PROTOTYPE: $
963	CODE:	946	CODE:
964	RETVAL = max_outstanding;	947	eio_set_max_poll_time (nseconds);
		948
		949	void
		950	min_parallel (unsigned int nthreads)
		951	PROTOTYPE: $
		952	CODE:
		953	eio_set_min_parallel (nthreads);
		954
		955	void
		956	max_parallel (unsigned int nthreads)
		957	PROTOTYPE: $
		958	CODE:
		959	eio_set_max_parallel (nthreads);
		960
		961	void
		962	max_idle (unsigned int nthreads)
		963	PROTOTYPE: $
		964	CODE:
		965	eio_set_max_idle (nthreads);
		966
		967	void
		968	idle_timeout (unsigned int seconds)
		969	PROTOTYPE: $
		970	CODE:
		971	eio_set_idle_timeout (seconds);
		972
		973	void
		974	max_outstanding (unsigned int maxreqs)
		975	PROTOTYPE: $
		976	CODE:
965	max_outstanding = nreqs;	977	max_outstanding = maxreqs;
966		978
967	void	979	void
968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
969	SV * pathname
970	int flags
971	int mode
972	SV * callback
973	PROTOTYPE: $$$;$
974	PPCODE:	981	PPCODE:
975	{	982	{
976	dREQ;	983	dREQ;
977		984
978	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
979	req->data = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
980	req->dataptr = SvPVbyte_nolen (req->data);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
981	req->fd = flags;	988	req->int1 = flags;
982	req->mode = mode;	989	req->int2 = mode;
983		990
984	REQ_SEND;	991	REQ_SEND;
985	}	992	}
986		993
987	void	994	void
988	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
989	SV * fh
990	SV * callback
991	PROTOTYPE: $;$
992	ALIAS:	996	ALIAS:
993	aio_close = REQ_CLOSE
994	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
995	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
		999	aio_syncfs = EIO_SYNCFS
996	PPCODE:	1000	PPCODE:
997	{	1001	{
		1002	int fd = s_fileno_croak (fh, 0);
998	dREQ;	1003	dREQ;
999		1004
1000	req->type = ix;	1005	req->type = ix;
1001	req->fh = newSVsv (fh);	1006	req->sv1 = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1007	req->int1 = fd;
1003		1008
1004	REQ_SEND (req);	1009	REQ_SEND (req);
1005	}	1010	}
1006		1011
1007	void	1012	void
		1013	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_SYNC_FILE_RANGE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->offs = offset;
		1023	req->size = nbytes;
		1024	req->int2 = flags;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	int fd = s_fileno_croak (fh, 0);
		1034	dREQ;
		1035
		1036	req->type = EIO_FALLOCATE;
		1037	req->sv1 = newSVsv (fh);
		1038	req->int1 = fd;
		1039	req->int2 = mode;
		1040	req->offs = offset;
		1041	req->size = len;
		1042
		1043	REQ_SEND (req);
		1044	}
		1045
		1046	void
		1047	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1048	PPCODE:
		1049	{
		1050	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1051	int fd = s_fileno_croak (fh, 0);
		1052	dREQ;
		1053
		1054	if (expect_false (close_fd < 0))
		1055	{
		1056	int pipefd [2];
		1057
		1058	if (
		1059	#ifdef _WIN32
		1060	_pipe (pipefd, 1, _O_BINARY) < 0
		1061	#else
		1062	pipe (pipefd) < 0
		1063	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1064	#endif
		1065	|| close (pipefd [1]) < 0
		1066	)
		1067	abort (); /*D*/
		1068
		1069	close_fd = pipefd [0];
		1070	}
		1071
		1072	req->type = EIO_DUP2;
		1073	req->int1 = close_fd;
		1074	req->sv2 = newSVsv (fh);
		1075	req->int2 = fd;
		1076
		1077	REQ_SEND (req);
		1078	}
		1079
		1080	void
1008	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1081	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1009	SV * fh
1010	UV offset
1011	UV length
1012	SV * data
1013	UV dataoffset
1014	SV * callback
1015	ALIAS:	1082	ALIAS:
1016	aio_read = REQ_READ	1083	aio_read = EIO_READ
1017	aio_write = REQ_WRITE	1084	aio_write = EIO_WRITE
1018	PROTOTYPE: $$$$$;$
1019	PPCODE:	1085	PPCODE:
1020	{	1086	{
1021	aio_req req;
1022	STRLEN svlen;	1087	STRLEN svlen;
		1088	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1023	char *svptr = SvPVbyte (data, svlen);	1089	char *svptr = SvPVbyte (data, svlen);
1024		1090	UV len = SvUV (length);
1025	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);
1027		1091
1028	if (dataoffset < 0)	1092	if (dataoffset < 0)
1029	dataoffset += svlen;	1093	dataoffset += svlen;
1030		1094
1031	if (dataoffset < 0 || dataoffset > svlen)	1095	if (dataoffset < 0 || dataoffset > svlen)
1032	croak ("data offset outside of string");	1096	croak ("dataoffset outside of data scalar");
1033		1097
1034	if (ix == REQ_WRITE)	1098	if (ix == EIO_WRITE)
1035	{	1099	{
1036	/* write: check length and adjust. */	1100	/* write: check length and adjust. */
1037	if (length < 0 || length + dataoffset > svlen)	1101	if (!SvOK (length) || len + dataoffset > svlen)
1038	length = svlen - dataoffset;	1102	len = svlen - dataoffset;
1039	}	1103	}
1040	else	1104	else
1041	{	1105	{
1042	/* read: grow scalar as necessary */	1106	/* read: check type and grow scalar as necessary */
		1107	SvUPGRADE (data, SVt_PV);
1043	svptr = SvGROW (data, length + dataoffset);	1108	svptr = SvGROW (data, len + dataoffset + 1);
1044	}	1109	}
1045
1046	if (length < 0)
1047	croak ("length must not be negative");
1048		1110
1049	{	1111	{
1050	dREQ;	1112	dREQ;
1051		1113
1052	req->type = ix;	1114	req->type = ix;
1053	req->fh = newSVsv (fh);	1115	req->sv1 = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1116	req->int1 = fd;
1055	: IoOFP (sv_2io (fh)));	1117	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1056	req->offset = offset;	1118	req->size = len;
1057	req->length = length;
1058	req->data = SvREFCNT_inc (data);	1119	req->sv2 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	1120	req->ptr2 = (char *)svptr + dataoffset;
		1121	req->stroffset = dataoffset;
1060		1122
1061	if (!SvREADONLY (data))	1123	if (!SvREADONLY (data))
1062	{	1124	{
1063	SvREADONLY_on (data);	1125	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	1126	req->flags |= FLAG_SV2_RO_OFF;
1065	}	1127	}
1066		1128
1067	REQ_SEND;	1129	REQ_SEND;
1068	}	1130	}
1069	}	1131	}
1070		1132
1071	void	1133	void
1072	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1134	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1073	SV * out_fh	1135	ALIAS:
1074	SV * in_fh	1136	aio_readlink = EIO_READLINK
1075	UV in_offset	1137	aio_realpath = EIO_REALPATH
1076	UV length
1077	SV * callback
1078	PROTOTYPE: $$$$;$
1079	PPCODE:	1138	PPCODE:
1080	{	1139	{
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (path);
		1144	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int ifd = s_fileno_croak (in_fh , 0);
		1154	int ofd = s_fileno_croak (out_fh, 1);
1081	dREQ;	1155	dREQ;
1082		1156
1083	req->type = REQ_SENDFILE;	1157	req->type = EIO_SENDFILE;
1084	req->fh = newSVsv (out_fh);	1158	req->sv1 = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1159	req->int1 = ofd;
1086	req->fh2 = newSVsv (in_fh);	1160	req->sv2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1161	req->int2 = ifd;
1088	req->offset = in_offset;	1162	req->offs = in_offset;
1089	req->length = length;	1163	req->size = length;
1090		1164
1091	REQ_SEND;	1165	REQ_SEND;
1092	}	1166	}
1093		1167
1094	void	1168	void
1095	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1169	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1096	SV * fh
1097	UV offset
1098	IV length
1099	SV * callback
1100	PROTOTYPE: $$$;$
1101	PPCODE:	1170	PPCODE:
1102	{	1171	{
		1172	int fd = s_fileno_croak (fh, 0);
1103	dREQ;	1173	dREQ;
1104		1174
1105	req->type = REQ_READAHEAD;	1175	req->type = EIO_READAHEAD;
1106	req->fh = newSVsv (fh);	1176	req->sv1 = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1177	req->int1 = fd;
1108	req->offset = offset;	1178	req->offs = offset;
1109	req->length = length;	1179	req->size = length;
1110		1180
1111	REQ_SEND;	1181	REQ_SEND;
1112	}	1182	}
1113		1183
1114	void	1184	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)	1185	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1116	SV * fh_or_path
1117	SV * callback
1118	ALIAS:	1186	ALIAS:
1119	aio_stat = REQ_STAT	1187	aio_stat = EIO_STAT
1120	aio_lstat = REQ_LSTAT	1188	aio_lstat = EIO_LSTAT
		1189	aio_statvfs = EIO_STATVFS
1121	PPCODE:	1190	PPCODE:
1122	{	1191	{
1123	dREQ;	1192	dREQ;
1124		1193
1125	New (0, req->statdata, 1, Stat_t);	1194	req->sv1 = newSVsv (fh_or_path);
1126	if (!req->statdata)
1127	{
1128	req_free (req);
1129	croak ("out of memory during aio_req->statdata allocation");
1130	}
1131		1195
1132	if (SvPOK (fh_or_path))	1196	if (SvPOK (req->sv1))
1133	{	1197	{
1134	req->type = ix;	1198	req->type = ix;
1135	req->data = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);	1199	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	}	1200	}
1138	else	1201	else
1139	{	1202	{
1140	req->type = REQ_FSTAT;	1203	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1141	req->fh = newSVsv (fh_or_path);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1204	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143	}	1205	}
1144		1206
1145	REQ_SEND;	1207	REQ_SEND;
1146	}	1208	}
1147		1209
		1210	UV
		1211	major (UV dev)
		1212	ALIAS:
		1213	minor = 1
		1214	CODE:
		1215	RETVAL = ix ? major (dev) : minor (dev);
		1216	OUTPUT:
		1217	RETVAL
		1218
		1219	UV
		1220	makedev (UV maj, UV min)
		1221	CODE:
		1222	RETVAL = makedev (maj, min);
		1223	OUTPUT:
		1224	RETVAL
		1225
1148	void	1226	void
		1227	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	dREQ;
		1231
		1232	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1233	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1234	req->sv1 = newSVsv (fh_or_path);
		1235
		1236	if (SvPOK (req->sv1))
		1237	{
		1238	req->type = EIO_UTIME;
		1239	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1240	}
		1241	else
		1242	{
		1243	req->type = EIO_FUTIME;
		1244	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1245	}
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	dREQ;
		1255
		1256	req->sv1 = newSVsv (fh_or_path);
		1257	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1258
		1259	if (SvPOK (req->sv1))
		1260	{
		1261	req->type = EIO_TRUNCATE;
		1262	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1263	}
		1264	else
		1265	{
		1266	req->type = EIO_FTRUNCATE;
		1267	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1268	}
		1269
		1270	REQ_SEND;
		1271	}
		1272
		1273	void
		1274	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1275	ALIAS:
		1276	aio_chmod = EIO_CHMOD
		1277	aio_mkdir = EIO_MKDIR
		1278	PPCODE:
		1279	{
		1280	dREQ;
		1281
		1282	req->int2 = mode;
		1283	req->sv1 = newSVsv (fh_or_path);
		1284
		1285	if (SvPOK (req->sv1))
		1286	{
		1287	req->type = ix;
		1288	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1289	}
		1290	else
		1291	{
		1292	req->type = EIO_FCHMOD;
		1293	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1294	}
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
		1300	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1306	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1307	req->sv1 = newSVsv (fh_or_path);
		1308
		1309	if (SvPOK (req->sv1))
		1310	{
		1311	req->type = EIO_CHOWN;
		1312	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1313	}
		1314	else
		1315	{
		1316	req->type = EIO_FCHOWN;
		1317	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1318	}
		1319
		1320	REQ_SEND;
		1321	}
		1322
		1323	void
		1324	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1325	PPCODE:
		1326	{
		1327	dREQ;
		1328
		1329	req->type = EIO_READDIR;
		1330	req->sv1 = newSVsv (pathname);
		1331	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1332	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1333
		1334	if (flags & EIO_READDIR_DENTS)
		1335	req->int1 |= EIO_READDIR_CUSTOM2;
		1336
		1337	REQ_SEND;
		1338	}
		1339
		1340	void
1149	aio_unlink (pathname,callback=&PL_sv_undef)	1341	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	SV * callback
1152	ALIAS:	1342	ALIAS:
1153	aio_unlink = REQ_UNLINK	1343	aio_unlink = EIO_UNLINK
1154	aio_rmdir = REQ_RMDIR	1344	aio_rmdir = EIO_RMDIR
1155	aio_readdir = REQ_READDIR	1345	aio_readdir = EIO_READDIR
1156	PPCODE:	1346	PPCODE:
1157	{	1347	{
1158	dREQ;	1348	dREQ;
1159		1349
1160	req->type = ix;	1350	req->type = ix;
1161	req->data = newSVsv (pathname);	1351	req->sv1 = newSVsv (pathname);
1162	req->dataptr = SvPVbyte_nolen (req->data);	1352	req->ptr1 = SvPVbyte_nolen (req->sv1);
1163		1353
1164	REQ_SEND;	1354	REQ_SEND;
1165	}	1355	}
1166		1356
1167	void	1357	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1358	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1169	SV * oldpath
1170	SV * newpath
1171	SV * callback
1172	ALIAS:	1359	ALIAS:
1173	aio_link = REQ_LINK	1360	aio_link = EIO_LINK
1174	aio_symlink = REQ_SYMLINK	1361	aio_symlink = EIO_SYMLINK
1175	aio_rename = REQ_RENAME	1362	aio_rename = EIO_RENAME
1176	PPCODE:	1363	PPCODE:
1177	{	1364	{
1178	dREQ;	1365	dREQ;
1179		1366
1180	req->type = ix;	1367	req->type = ix;
1181	req->fh = newSVsv (oldpath);	1368	req->sv1 = newSVsv (oldpath);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	1369	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	req->data = newSVsv (newpath);	1370	req->sv2 = newSVsv (newpath);
1184	req->dataptr = SvPVbyte_nolen (req->data);	1371	req->ptr2 = SvPVbyte_nolen (req->sv2);
1185		1372
1186	REQ_SEND;	1373	REQ_SEND;
1187	}	1374	}
1188		1375
1189	void	1376	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	1377	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1191	double delay
1192	SV * callback
1193	PPCODE:	1378	PPCODE:
1194	{	1379	{
1195	dREQ;	1380	dREQ;
1196		1381
1197	req->type = REQ_SLEEP;	1382	req->type = EIO_MKNOD;
1198	req->fd = delay < 0. ? 0 : delay;	1383	req->sv1 = newSVsv (pathname);
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1384	req->ptr1 = SvPVbyte_nolen (req->sv1);
1200		1385	req->int2 = (mode_t)mode;
		1386	req->offs = dev;
		1387
1201	REQ_SEND;	1388	REQ_SEND;
1202	}	1389	}
1203		1390
1204	void	1391	void
1205	aio_group (callback=&PL_sv_undef)	1392	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1206	SV * callback	1393	ALIAS:
1207	PROTOTYPE: ;$	1394	aio_mtouch = EIO_MTOUCH
		1395	aio_msync = EIO_MSYNC
1208	PPCODE:	1396	PPCODE:
1209	{	1397	{
		1398	STRLEN svlen;
		1399	char *svptr = SvPVbyte (data, svlen);
		1400	UV len = SvUV (length);
		1401
		1402	if (offset < 0)
		1403	offset += svlen;
		1404
		1405	if (offset < 0 || offset > svlen)
		1406	croak ("offset outside of scalar");
		1407
		1408	if (!SvOK (length) || len + offset > svlen)
		1409	len = svlen - offset;
		1410
		1411	{
		1412	dREQ;
		1413
		1414	req->type = ix;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418	req->int1 = flags;
		1419
		1420	REQ_SEND;
		1421	}
		1422	}
		1423
		1424	void
		1425	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1426	PPCODE:
		1427	{
		1428	STRLEN svlen;
		1429	char *svptr = SvPVbyte (data, svlen);
		1430	UV len = SvUV (length);
		1431
		1432	if (offset < 0)
		1433	offset += svlen;
		1434
		1435	if (offset < 0 || offset > svlen)
		1436	croak ("offset outside of scalar");
		1437
		1438	if (!SvOK (length) || len + offset > svlen)
		1439	len = svlen - offset;
		1440
		1441	{
		1442	dREQ;
		1443
		1444	req->type = EIO_MLOCK;
		1445	req->sv2 = SvREFCNT_inc (data);
		1446	req->ptr2 = (char *)svptr + offset;
		1447	req->size = len;
		1448
		1449	REQ_SEND;
		1450	}
		1451	}
		1452
		1453	void
		1454	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1455	PPCODE:
		1456	{
		1457	dREQ;
		1458
		1459	req->type = EIO_MLOCKALL;
		1460	req->int1 = flags;
		1461
		1462	REQ_SEND;
		1463	}
		1464
		1465	void
		1466	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1467	PPCODE:
		1468	{
1210	dREQ;	1469	dREQ;
		1470
		1471	req->type = EIO_BUSY;
		1472	req->nv1 = delay < 0. ? 0. : delay;
		1473
		1474	REQ_SEND;
		1475	}
		1476
		1477	void
		1478	aio_group (SV *callback=&PL_sv_undef)
		1479	PPCODE:
		1480	{
		1481	dREQ;
		1482
1211	req->type = REQ_GROUP;	1483	req->type = EIO_GROUP;
		1484
1212	req_send (req);	1485	req_submit (req);
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1486	XPUSHs (req_sv (req, aio_grp_stash));
1214	}	1487	}
		1488
		1489	void
		1490	aio_nop (SV *callback=&PL_sv_undef)
		1491	ALIAS:
		1492	aio_nop = EIO_NOP
		1493	aio_sync = EIO_SYNC
		1494	PPCODE:
		1495	{
		1496	dREQ;
		1497
		1498	req->type = ix;
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	int
		1504	aioreq_pri (int pri = 0)
		1505	CODE:
		1506	RETVAL = next_pri;
		1507	if (items > 0)
		1508	{
		1509	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1510	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1511	next_pri = pri;
		1512	}
		1513	OUTPUT:
		1514	RETVAL
		1515
		1516	void
		1517	aioreq_nice (int nice = 0)
		1518	CODE:
		1519	nice = next_pri - nice;
		1520	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1521	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1522	next_pri = nice;
1215		1523
1216	void	1524	void
1217	flush ()	1525	flush ()
1218	PROTOTYPE:
1219	CODE:	1526	CODE:
1220	while (nreqs)	1527	while (eio_nreqs ())
1221	{	1528	{
1222	poll_wait ();	1529	poll_wait ();
1223	poll_cb ();	1530	poll_cb ();
1224	}	1531	}
1225		1532
1226	void
1227	poll()
1228	PROTOTYPE:
1229	CODE:
1230	if (nreqs)
1231	{
1232	poll_wait ();
1233	poll_cb ();
1234	}
1235
1236	int	1533	int
1237	poll_fileno()	1534	poll ()
1238	PROTOTYPE:
1239	CODE:	1535	CODE:
1240	RETVAL = respipe [0];	1536	poll_wait ();
1241	OUTPUT:
1242	RETVAL
1243
1244	int
1245	poll_cb(...)
1246	PROTOTYPE:
1247	CODE:
1248	RETVAL = poll_cb ();	1537	RETVAL = poll_cb ();
1249	OUTPUT:	1538	OUTPUT:
1250	RETVAL	1539	RETVAL
1251		1540
1252	void
1253	poll_wait()
1254	PROTOTYPE:
1255	CODE:
1256	if (nreqs)
1257	poll_wait ();
1258
1259	int	1541	int
1260	nreqs()	1542	poll_fileno ()
1261	PROTOTYPE:
1262	CODE:	1543	CODE:
1263	RETVAL = nreqs;	1544	RETVAL = s_epipe_fd (&respipe);
1264	OUTPUT:	1545	OUTPUT:
1265	RETVAL	1546	RETVAL
1266		1547
		1548	int
		1549	poll_cb (...)
		1550	PROTOTYPE:
		1551	CODE:
		1552	RETVAL = poll_cb ();
		1553	OUTPUT:
		1554	RETVAL
		1555
		1556	void
		1557	poll_wait ()
		1558	CODE:
		1559	poll_wait ();
		1560
		1561	int
		1562	nreqs ()
		1563	CODE:
		1564	RETVAL = eio_nreqs ();
		1565	OUTPUT:
		1566	RETVAL
		1567
		1568	int
		1569	nready ()
		1570	CODE:
		1571	RETVAL = eio_nready ();
		1572	OUTPUT:
		1573	RETVAL
		1574
		1575	int
		1576	npending ()
		1577	CODE:
		1578	RETVAL = eio_npending ();
		1579	OUTPUT:
		1580	RETVAL
		1581
		1582	int
		1583	nthreads ()
		1584	CODE:
		1585	RETVAL = eio_nthreads ();
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1591	CODE:
		1592	RETVAL = posix_fadvise (fh, offset, length, advice);
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	IV
		1597	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1598	CODE:
		1599	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1605	PPCODE:
		1606	sv_unmagic (scalar, MMAP_MAGIC);
		1607	{
		1608	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1609	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1610	if (addr == (void *)-1)
		1611	XSRETURN_NO;
		1612
		1613	sv_force_normal (scalar);
		1614
		1615	/* we store the length in mg_obj, as namlen is I32 :/ */
		1616	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1617	->mg_obj = (SV *)length;
		1618
		1619	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1620
		1621	if (!(prot & PROT_WRITE))
		1622	SvREADONLY_on (scalar);
		1623
		1624	if (SvLEN (scalar))
		1625	Safefree (SvPVX (scalar));
		1626
		1627	SvPVX (scalar) = (char *)addr;
		1628	SvCUR_set (scalar, length);
		1629	SvLEN_set (scalar, 0);
		1630	SvPOK_only (scalar);
		1631
		1632	XSRETURN_YES;
		1633	}
		1634
		1635	void
		1636	munmap (SV *scalar)
		1637	CODE:
		1638	sv_unmagic (scalar, MMAP_MAGIC);
		1639
		1640	int
		1641	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1642	ALIAS:
		1643	mprotect = 1
		1644	CODE:
		1645	{
		1646	STRLEN svlen;
		1647	void *addr = SvPVbyte (scalar, svlen);
		1648	size_t len = SvUV (length);
		1649
		1650	if (offset < 0)
		1651	offset += svlen;
		1652
		1653	if (offset < 0 || offset > svlen)
		1654	croak ("offset outside of scalar");
		1655
		1656	if (!SvOK (length) || len + offset > svlen)
		1657	len = svlen - offset;
		1658
		1659	addr = (void *)(((intptr_t)addr) + offset);
		1660	eio_page_align (&addr, &len);
		1661
		1662	switch (ix)
		1663	{
		1664	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1665	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1666	}
		1667	}
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	int
		1672	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1673	CODE:
		1674	{
		1675	STRLEN svlen;
		1676	void *addr = SvPVbyte (scalar, svlen);
		1677	size_t len = SvUV (length);
		1678
		1679	if (offset < 0)
		1680	offset += svlen;
		1681
		1682	if (offset < 0 || offset > svlen)
		1683	croak ("offset outside of scalar");
		1684
		1685	if (!SvOK (length) || len + offset > svlen)
		1686	len = svlen - offset;
		1687
		1688	addr = (void *)(((intptr_t)addr) + offset);
		1689	eio_page_align (&addr, &len);
		1690	#if _POSIX_MEMLOCK_RANGE
		1691	RETVAL = munlock (addr, len);
		1692	#else
		1693	RETVAL = ((errno = ENOSYS), -1);
		1694	#endif
		1695	}
		1696	OUTPUT:
		1697	RETVAL
		1698
		1699	int
		1700	munlockall ()
		1701	CODE:
		1702	#if _POSIX_MEMLOCK
		1703	munlockall ();
		1704	#else
		1705	RETVAL = -1;
		1706	errno = ENOSYS;
		1707	#endif
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	void _on_next_submit (SV *cb)
		1712	CODE:
		1713	SvREFCNT_dec (on_next_submit);
		1714	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1715
1267	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1268		1717
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270		1719
1271	void	1720	void
1272	cancel (aio_req_ornot req)	1721	cancel (aio_req_ornot req)
1273	PROTOTYPE:
1274	CODE:	1722	CODE:
1275	req_cancel (req);	1723	eio_cancel (req);
		1724
		1725	void
		1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1727	PPCODE:
		1728	{
		1729	if (GIMME_V != G_VOID)
		1730	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1731
		1732	if (items > 1)
		1733	{
		1734	SV *cb_cv =get_cb (callback);
		1735
		1736	SvREFCNT_dec (req->callback);
		1737	req->callback = SvREFCNT_inc (cb_cv);
		1738	}
		1739	}
1276		1740
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1741	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		1742
1279	void	1743	void
1280	add (aio_req grp, ...)	1744	add (aio_req grp, ...)
1281	PPCODE:	1745	PPCODE:
1282	{	1746	{
1283	int i;	1747	int i;
1284	aio_req req;
1285		1748
1286	if (grp->fd == 2)	1749	if (grp->int1 == 2)
1287	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1750	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1288		1751
1289	for (i = 1; i < items; ++i )	1752	for (i = 1; i < items; ++i )
1290	{	1753	{
		1754	aio_req req;
		1755
1291	if (GIMME_V != G_VOID)	1756	if (GIMME_V != G_VOID)
1292	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1757	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1293		1758
1294	req = SvAIO_REQ (ST (i));	1759	req = SvAIO_REQ (ST (i));
1295		1760
1296	if (req)	1761	if (req)
1297	{	1762	eio_grp_add (grp, req);
1298	++grp->length;
1299	req->grp = grp;
1300
1301	req->grp_prev = 0;
1302	req->grp_next = grp->grp_first;
1303
1304	if (grp->grp_first)
1305	grp->grp_first->grp_prev = req;
1306
1307	grp->grp_first = req;
1308	}
1309	}	1763	}
1310	}	1764	}
		1765
		1766	void
		1767	cancel_subs (aio_req_ornot req)
		1768	CODE:
		1769	req_cancel_subs (req);
1311		1770
1312	void	1771	void
1313	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1314	CODE:	1773	CODE:
1315	{	1774	{
1316	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1317	AV *av = newAV ();	1780	av = newAV ();
		1781	av_extend (av, items - 1);
1318		1782
1319	for (i = 1; i < items; ++i )	1783	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	1784	av_push (av, newSVsv (ST (i)));
1321		1785
1322	SvREFCNT_dec (grp->data);	1786	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	1787	grp->sv1 = (SV *)av;
1324	}	1788	}
1325		1789
1326	void	1790	void
1327	lock (aio_req grp)	1791	errno (aio_req grp, int errorno = errno)
1328	CODE:	1792	CODE:
1329	++grp->length;	1793	grp->errorno = errorno;
1330		1794
1331	void	1795	void
1332	unlock (aio_req grp)
1333	CODE:
1334	aio_grp_dec (grp);
1335
1336	void
1337	feeder_limit (aio_req grp, int limit)	1796	limit (aio_req grp, int limit)
1338	CODE:	1797	CODE:
1339	grp->fd2 = limit;	1798	eio_grp_limit (grp, limit);
1340	aio_grp_feed (grp);
1341		1799
1342	void	1800	void
1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1344	CODE:	1802	CODE:
1345	{	1803	{
1346	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1347	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
		1806	grp->feed = aio_grp_feed;
1348		1807
1349	if (grp->fd2 <= 0)	1808	if (grp->int2 <= 0)
1350	grp->fd2 = 2;	1809	grp->int2 = 2;
1351		1810
1352	aio_grp_feed (grp);	1811	eio_grp_limit (grp, grp->int2);
1353	}	1812	}
1354		1813

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