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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.54 by root, Mon Oct 23 00:34:36 2006 UTC vs.
Revision 1.191 by root, Tue Jul 19 05:00:11 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_GROUP, REQ_NOP,
61	REQ_SLEEP,
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_NOP:
265	case REQ_SLEEP:
266	break;
267
268	default:
269	PUSHs (sv_2mortal (newSViv (req->result)));
270	break;
271	}
272
273
274	PUTBACK;
275	call_sv (req->callback, G_VOID | G_EVAL);
276	SPAGAIN;
277
278	FREETMPS;
279	LEAVE;
280
281	errno = errorno;
282
283	if (SvTRUE (ERRSV))
284	{
285	req_free (req);
286	croak (0);
287	}
288	}
289
290	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
291	{	648	{
292	if (req->grp)
293	{
294	aio_req grp = req->grp;
295
296	/* unlink request */
297	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
298	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
299
300	if (grp->grp_first == req)
301	grp->grp_first = req->grp_next;
302
303	aio_grp_dec (grp);
304	}
305
306	if (req->self)	649	if (req->self)
307	{	650	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
310	}	653	}
311		654
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	655	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	656	SvREFCNT_dec (req->sv2);
315	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320		658
321	Safefree (req);	659	Safefree (req);
322	}	660	}
323		661
324	static void req_cancel (aio_req req)	662	static void req_cancel_subs (aio_req grp)
325	{	663	{
326	req->cancelled = 1;
327
328	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 ())
329	{	682	{
330	aio_req sub;	683	int size;
331		684
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	685	X_LOCK (reslock);
333	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);
334	}	695	}
335	}	696	}
336		697
337	static int poll_cb ()	698	static int poll_cb (void)
338	{	699	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	700	for (;;)
345	{	701	{
346	pthread_mutex_lock (&reslock);	702	int res = eio_poll ();
347	req = ress;
348		703
349	if (req)	704	if (res > 0)
350	{
351	ress = req->next;
352
353	if (!ress)
354	{
355	/* read any signals sent by the worker threads */
356	char buf [32];
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}
362	}
363
364	pthread_mutex_unlock (&reslock);
365
366	if (!req)
367	break;	705	croak (0);
368		706
369	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
370		709
371	if (req->type == REQ_QUIT)	710	poll_wait ();
372	started--;
373	else if (req->type == REQ_GROUP && req->length)
374	{
375	req->fd = 1; /* mark request as delayed */
376	continue;
377	}
378	else
379	{
380	if (req->type == REQ_READ)
381	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382
383	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
384	SvREADONLY_off (req->data);
385
386	if (req->statdata)
387	{
388	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389	PL_laststatval = req->result;
390	PL_statcache = *(req->statdata);
391	}
392
393	req_invoke (req);
394
395	count++;
396	}
397
398	req_free (req);
399	}	711	}
400
401	return count;
402	}	712	}
403		713
404	static void *aio_proc(void *arg);	714	static void ecb_cold
405		715	reinit (void)
406	static void start_thread (void)
407	{	716	{
408	sigset_t fullsigset, oldsigset;	717	create_respipe ();
409	pthread_t tid;
410	pthread_attr_t attr;
411		718
412	pthread_attr_init (&attr);	719	if (eio_init (want_poll, done_poll) < 0)
413	pthread_attr_setstacksize (&attr, STACKSIZE);	720	croak ("IO::AIO: unable to initialise eio library");
414	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415
416	sigfillset (&fullsigset);
417	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418
419	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
420	started++;
421
422	sigprocmask (SIG_SETMASK, &oldsigset, 0);
423	}
424
425	static void req_send (aio_req req)
426	{
427	while (started < wanted && nreqs >= started)
428	start_thread ();
429
430	++nreqs;
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{
438	reqe->next = req;
439	reqe = req;
440	}
441	else
442	reqe = reqs = req;
443
444	pthread_cond_signal (&reqwait);
445	pthread_mutex_unlock (&reqlock);
446
447	if (nreqs > max_outstanding)
448	for (;;)
449	{
450	poll_cb ();
451
452	if (nreqs <= max_outstanding)
453	break;
454
455	poll_wait ();
456	}
457	}
458
459	static void end_thread (void)
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464
465	req_send (req);
466	}
467
468	static void min_parallel (int nthreads)
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473
474	static void max_parallel (int nthreads)
475	{
476	int cur = started;
477
478	if (wanted > nthreads)
479	wanted = nthreads;
480
481	while (cur > wanted)
482	{
483	end_thread ();
484	cur--;
485	}
486
487	while (started > wanted)
488	{
489	poll_wait ();
490	poll_cb ();
491	}
492	}
493
494	static void create_pipe ()
495	{
496	if (pipe (respipe))
497	croak ("unable to initialize result pipe");
498
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
500	croak ("cannot set result pipe to nonblocking mode");
501
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
503	croak ("cannot set result pipe to nonblocking mode");
504	}	721	}
505		722
506	/*****************************************************************************/	723	/*****************************************************************************/
507	/* work around various missing functions */
508		724
509	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
510	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
511	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
512
513	/*
514	* make our pread/pwrite safe against themselves, but not against
515	* normal read/write by using a mutex. slows down execution a lot,
516	* but that's your problem, not mine.
517	*/
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
519
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
521	{
522	ssize_t res;
523	off_t ooffset;
524
525	pthread_mutex_lock (&preadwritelock);
526	ooffset = lseek (fd, 0, SEEK_CUR);
527	lseek (fd, offset, SEEK_SET);
528	res = read (fd, buf, count);
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531
532	return res;
533	}
534
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
536	{
537	ssize_t res;
538	off_t ooffset;
539
540	pthread_mutex_lock (&preadwritelock);
541	ooffset = lseek (fd, 0, SEEK_CUR);
542	lseek (fd, offset, SEEK_SET);
543	res = write (fd, buf, count);
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546
547	return res;
548	}
549	#endif
550
551	#if !HAVE_FDATASYNC
552	# define fdatasync fsync
553	#endif
554
555	#if !HAVE_READAHEAD
556	# define readahead aio_readahead
557
558	static ssize_t readahead (int fd, off_t offset, size_t count)
559	{
560	char readahead_buf[4096];
561
562	while (count > 0)
563	{
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565
566	pread (fd, readahead_buf, len, offset);
567	offset += len;
568	count -= len;
569	}
570
571	errno = 0;
572	}
573	#endif
574
575	#if !HAVE_READDIR_R
576	# define readdir_r aio_readdir_r
577
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
579
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581	{
582	struct dirent *e;
583	int errorno;
584
585	pthread_mutex_lock (&readdirlock);
586
587	e = readdir (dirp);
588	errorno = errno;
589
590	if (e)
591	{
592	*res = ent;
593	strcpy (ent->d_name, e->d_name);
594	}
595	else
596	*res = 0;
597
598	pthread_mutex_unlock (&readdirlock);
599
600	errno = errorno;
601	return e ? 0 : -1;
602	}
603	#endif
604
605	/* sendfile always needs emulation */
606	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
607	{
608	ssize_t res;
609
610	if (!count)
611	return 0;
612
613	#if HAVE_SENDFILE
614	# if __linux
615	res = sendfile (ofd, ifd, &offset, count);
616
617	# elif __freebsd
618	/*
619	* Of course, the freebsd sendfile is a dire hack with no thoughts
620	* wasted on making it similar to other I/O functions.
621	*/
622	{
623	off_t sbytes;
624	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625
626	if (res < 0 && sbytes)
627	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
628	res = sbytes;
629	}
630
631	# elif __hpux
632	res = sendfile (ofd, ifd, offset, count, 0, 0);
633
634	# elif __solaris
635	{
636	struct sendfilevec vec;
637	size_t sbytes;
638
639	vec.sfv_fd = ifd;
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643
644	res = sendfilev (ofd, &vec, 1, &sbytes);
645
646	if (res < 0 && sbytes)
647	res = sbytes;
648	}
649
650	# endif	728	#endif
651	#else
652	res = -1;
653	errno = ENOSYS;
654	#endif
655		729
656	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
657	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
658	#if __solaris	732	# define PROT_NONE 0
659	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
660	#endif	737	#endif
661	)
662	)
663	{
664	/* emulate sendfile. this is a major pain in the ass */
665	char buf[4096];
666	res = 0;
667		738
668	while (count)	739	#define MMAP_MAGIC PERL_MAGIC_ext
669	{
670	ssize_t cnt;
671
672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673		740
674	if (cnt <= 0)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
675	{
676	if (cnt && !res) res = -1;
677	break;
678	}
679
680	cnt = write (ofd, buf, cnt);
681
682	if (cnt <= 0)
683	{
684	if (cnt && !res) res = -1;
685	break;
686	}
687
688	offset += cnt;
689	res += cnt;
690	count -= cnt;
691	}
692	}
693
694	return res;
695	}
696
697	/* read a full directory */
698	static int scandir_ (const char *path, void **namesp)
699	{	742	{
700	DIR *dirp = opendir (path);	743	int old_errno = errno;
701	union	744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
702	{
703	struct dirent d;
704	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705	} u;
706	struct dirent *entp;
707	char *name, *names;
708	int memlen = 4096;
709	int memofs = 0;
710	int res = 0;
711	int errorno;
712
713	if (!dirp)
714	return -1;
715
716	names = malloc (memlen);
717
718	for (;;)
719	{
720	errno = 0, readdir_r (dirp, &u.d, &entp);
721
722	if (!entp)
723	break;
724
725	name = entp->d_name;
726
727	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728	{
729	int len = strlen (name) + 1;
730
731	res++;
732
733	while (memofs + len > memlen)
734	{
735	memlen *= 2;
736	names = realloc (names, memlen);
737	if (!names)
738	break;
739	}
740
741	memcpy (names + memofs, name, len);
742	memofs += len;
743	}
744	}
745
746	errorno = errno;	745	errno = old_errno;
747	closedir (dirp);
748		746
749	if (errorno)	747	mg->mg_obj = 0; /* just in case */
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755		748
756	*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
757	return res;	758	return 0;
758	}	759	}
		760
		761	static MGVTBL mmap_vtbl = {
		762	0, 0, 0, 0, mmap_free
		763	};
759		764
760	/*****************************************************************************/	765	/*****************************************************************************/
761		766
762	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
763	{	768	{
764	aio_req req;	769	SvGETMAGIC (cb_sv);
765	int type;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
766
767	do
768	{
769	pthread_mutex_lock (&reqlock);
770
771	for (;;)
772	{
773	req = reqs;
774
775	if (reqs)
776	{
777	reqs = reqs->next;
778	if (!reqs) reqe = 0;
779	}
780
781	if (req)
782	break;
783
784	pthread_cond_wait (&reqwait, &reqlock);
785	}
786
787	pthread_mutex_unlock (&reqlock);
788
789	errno = 0; /* strictly unnecessary */
790
791	if (!req->cancelled)
792	switch (type = req->type) /* remember type for QUIT check */
793	{
794	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
795	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
796
797	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
798	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
799
800	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803
804	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
805	case REQ_CLOSE: req->result = close (req->fd); break;
806	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
807	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
808	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
809	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811
812	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813	case REQ_FSYNC: req->result = fsync (req->fd); break;
814	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
815
816	case REQ_SLEEP:
817	{
818	struct timeval tv;
819
820	tv.tv_sec = req->fd;
821	tv.tv_usec = req->fd2;
822
823	req->result = select (0, 0, 0, 0, &tv);
824	}
825
826	case REQ_GROUP: /*TODO: should not be handled here */
827	case REQ_NOP: /*TODO: should not be handled here */
828	case REQ_QUIT:
829	break;
830
831	default:
832	req->result = ENOSYS;
833	break;
834	}
835
836	req->errorno = errno;
837
838	pthread_mutex_lock (&reslock);
839
840	req->next = 0;
841
842	if (rese)
843	{
844	rese->next = req;
845	rese = req;
846	}
847	else
848	{
849	rese = ress = req;
850
851	/* write a dummy byte to the pipe so fh becomes ready */
852	write (respipe [1], &respipe, 1);
853	}
854
855	pthread_mutex_unlock (&reslock);
856	}
857	while (type != REQ_QUIT);
858
859	return 0;
860	}
861
862	/*****************************************************************************/
863
864	static void atfork_prepare (void)
865	{
866	pthread_mutex_lock (&reqlock);
867	pthread_mutex_lock (&reslock);
868	#if !HAVE_PREADWRITE
869	pthread_mutex_lock (&preadwritelock);
870	#endif
871	#if !HAVE_READDIR_R
872	pthread_mutex_lock (&readdirlock);
873	#endif
874	}
875
876	static void atfork_parent (void)
877	{
878	#if !HAVE_READDIR_R
879	pthread_mutex_unlock (&readdirlock);
880	#endif
881	#if !HAVE_PREADWRITE
882	pthread_mutex_unlock (&preadwritelock);
883	#endif
884	pthread_mutex_unlock (&reslock);
885	pthread_mutex_unlock (&reqlock);
886	}
887
888	static void atfork_child (void)
889	{
890	aio_req prv;
891
892	started = 0;
893
894	while (reqs)
895	{
896	prv = reqs;
897	reqs = prv->next;
898	req_free (prv);
899	}
900
901	reqs = reqe = 0;
902
903	while (ress)
904	{
905	prv = ress;
906	ress = prv->next;
907	req_free (prv);
908	}
909
910	ress = rese = 0;
911
912	close (respipe [0]);
913	close (respipe [1]);
914	create_pipe ();
915
916	atfork_parent ();
917	}	771	}
918		772
919	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
920	aio_req req; \	775	aio_req req; \
		776	int req_pri = next_pri; \
		777	next_pri = EIO_PRI_DEFAULT; \
921	\	778	\
922	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
923	croak ("callback must be undef or of reference type"); \
924	\	780	\
925	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
926	if (!req) \	782	if (!req) \
927	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
928	\	784	\
929	req->callback = newSVsv (callback)	785	req->callback = SvREFCNT_inc (cb_cv); \
		786	req->pri = req_pri
930		787
931	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
932	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
933	\	792	\
934	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
936		795
937	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
938		797
939	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
940		799
941	BOOT:	800	BOOT:
942	{	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
943	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947		922
948	create_pipe ();	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
950	}
951		925
		926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		927
		928	reinit ();
		929	}
		930
952	void	931	void
953	min_parallel (nthreads)	932	reinit ()
954	int nthreads	933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
		938	max_poll_reqs (unsigned int nreqs)
955	PROTOTYPE: $	939	PROTOTYPE: $
		940	CODE:
		941	eio_set_max_poll_reqs (nreqs);
956		942
957	void	943	void
958	max_parallel (nthreads)	944	max_poll_time (double nseconds)
959	int nthreads
960	PROTOTYPE: $	945	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	946	CODE:
967	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:
968	max_outstanding = nreqs;	977	max_outstanding = maxreqs;
969		978
970	void	979	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
972	SV * pathname
973	int flags
974	int mode
975	SV * callback
976	PROTOTYPE: $$$;$
977	PPCODE:	981	PPCODE:
978	{	982	{
979	dREQ;	983	dREQ;
980		984
981	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
982	req->data = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
983	req->dataptr = SvPVbyte_nolen (req->data);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
984	req->fd = flags;	988	req->int1 = flags;
985	req->mode = mode;	989	req->int2 = mode;
986		990
987	REQ_SEND;	991	REQ_SEND;
988	}	992	}
989		993
990	void	994	void
991	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	996	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
998	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
999	PPCODE:	999	PPCODE:
1000	{	1000	{
		1001	int fd = s_fileno_croak (fh, 0);
1001	dREQ;	1002	dREQ;
1002		1003
1003	req->type = ix;	1004	req->type = ix;
1004	req->fh = newSVsv (fh);	1005	req->sv1 = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1006	req->int1 = fd;
1006		1007
1007	REQ_SEND (req);	1008	REQ_SEND (req);
1008	}	1009	}
1009		1010
1010	void	1011	void
		1012	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1013	PPCODE:
		1014	{
		1015	int fd = s_fileno_croak (fh, 0);
		1016	dREQ;
		1017
		1018	req->type = EIO_SYNC_FILE_RANGE;
		1019	req->sv1 = newSVsv (fh);
		1020	req->int1 = fd;
		1021	req->offs = offset;
		1022	req->size = nbytes;
		1023	req->int2 = flags;
		1024
		1025	REQ_SEND (req);
		1026	}
		1027
		1028	void
		1029	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1030	PPCODE:
		1031	{
		1032	int fd = s_fileno_croak (fh, 0);
		1033	dREQ;
		1034
		1035	req->type = EIO_FALLOCATE;
		1036	req->sv1 = newSVsv (fh);
		1037	req->int1 = fd;
		1038	req->int2 = mode;
		1039	req->offs = offset;
		1040	req->size = len;
		1041
		1042	REQ_SEND (req);
		1043	}
		1044
		1045	void
		1046	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1047	PPCODE:
		1048	{
		1049	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1050	int fd = s_fileno_croak (fh, 0);
		1051	dREQ;
		1052
		1053	if (expect_false (close_fd < 0))
		1054	{
		1055	int pipefd [2];
		1056
		1057	if (
		1058	#ifdef _WIN32
		1059	_pipe (pipefd, 1, _O_BINARY) < 0
		1060	#else
		1061	pipe (pipefd) < 0
		1062	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1063	#endif
		1064	|| close (pipefd [1]) < 0
		1065	)
		1066	abort (); /*D*/
		1067
		1068	close_fd = pipefd [0];
		1069	}
		1070
		1071	req->type = EIO_DUP2;
		1072	req->int1 = close_fd;
		1073	req->sv2 = newSVsv (fh);
		1074	req->int2 = fd;
		1075
		1076	REQ_SEND (req);
		1077	}
		1078
		1079	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1080	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:	1081	ALIAS:
1019	aio_read = REQ_READ	1082	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	1083	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	1084	PPCODE:
1023	{	1085	{
1024	aio_req req;
1025	STRLEN svlen;	1086	STRLEN svlen;
		1087	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	1088	char *svptr = SvPVbyte (data, svlen);
1027		1089	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		1090
1031	if (dataoffset < 0)	1091	if (dataoffset < 0)
1032	dataoffset += svlen;	1092	dataoffset += svlen;
1033		1093
1034	if (dataoffset < 0 || dataoffset > svlen)	1094	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	1095	croak ("dataoffset outside of data scalar");
1036		1096
1037	if (ix == REQ_WRITE)	1097	if (ix == EIO_WRITE)
1038	{	1098	{
1039	/* write: check length and adjust. */	1099	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	1100	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	1101	len = svlen - dataoffset;
1042	}	1102	}
1043	else	1103	else
1044	{	1104	{
1045	/* read: grow scalar as necessary */	1105	/* read: check type and grow scalar as necessary */
		1106	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	1107	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	1108	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		1109
1052	{	1110	{
1053	dREQ;	1111	dREQ;
1054		1112
1055	req->type = ix;	1113	req->type = ix;
1056	req->fh = newSVsv (fh);	1114	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1115	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	1116	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	1117	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	1118	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	1119	req->ptr2 = (char *)svptr + dataoffset;
		1120	req->stroffset = dataoffset;
1063		1121
1064	if (!SvREADONLY (data))	1122	if (!SvREADONLY (data))
1065	{	1123	{
1066	SvREADONLY_on (data);	1124	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	1125	req->flags |= FLAG_SV2_RO_OFF;
1068	}	1126	}
1069		1127
1070	REQ_SEND;	1128	REQ_SEND;
1071	}	1129	}
1072	}	1130	}
1073		1131
1074	void	1132	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1133	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1076	SV * out_fh	1134	ALIAS:
1077	SV * in_fh	1135	aio_readlink = EIO_READLINK
1078	UV in_offset	1136	aio_realpath = EIO_REALPATH
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$
1082	PPCODE:	1137	PPCODE:
1083	{	1138	{
		1139	dREQ;
		1140
		1141	req->type = ix;
		1142	req->sv1 = newSVsv (path);
		1143	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1144
		1145	REQ_SEND;
		1146	}
		1147
		1148	void
		1149	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1150	PPCODE:
		1151	{
		1152	int ifd = s_fileno_croak (in_fh , 0);
		1153	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1154	dREQ;
1085		1155
1086	req->type = REQ_SENDFILE;	1156	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1157	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1158	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1159	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1160	req->int2 = ifd;
1091	req->offset = in_offset;	1161	req->offs = in_offset;
1092	req->length = length;	1162	req->size = length;
1093		1163
1094	REQ_SEND;	1164	REQ_SEND;
1095	}	1165	}
1096		1166
1097	void	1167	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1168	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1169	PPCODE:
1105	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1172	dREQ;
1107		1173
1108	req->type = REQ_READAHEAD;	1174	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1175	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1176	req->int1 = fd;
1111	req->offset = offset;	1177	req->offs = offset;
1112	req->length = length;	1178	req->size = length;
1113		1179
1114	REQ_SEND;	1180	REQ_SEND;
1115	}	1181	}
1116		1182
1117	void	1183	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1184	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1185	ALIAS:
1122	aio_stat = REQ_STAT	1186	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1187	aio_lstat = EIO_LSTAT
		1188	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1189	PPCODE:
1125	{	1190	{
1126	dREQ;	1191	dREQ;
1127		1192
1128	New (0, req->statdata, 1, Stat_t);	1193	req->sv1 = newSVsv (fh_or_path);
1129	if (!req->statdata)
1130	{
1131	req_free (req);
1132	croak ("out of memory during aio_req->statdata allocation");
1133	}
1134		1194
1135	if (SvPOK (fh_or_path))	1195	if (SvPOK (req->sv1))
1136	{	1196	{
1137	req->type = ix;	1197	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);	1198	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140	}	1199	}
1141	else	1200	else
1142	{	1201	{
1143	req->type = REQ_FSTAT;	1202	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1144	req->fh = newSVsv (fh_or_path);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1203	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}	1204	}
1147		1205
1148	REQ_SEND;	1206	REQ_SEND;
1149	}	1207	}
1150		1208
		1209	UV
		1210	major (UV dev)
		1211	ALIAS:
		1212	minor = 1
		1213	CODE:
		1214	RETVAL = ix ? major (dev) : minor (dev);
		1215	OUTPUT:
		1216	RETVAL
		1217
		1218	UV
		1219	makedev (UV maj, UV min)
		1220	CODE:
		1221	RETVAL = makedev (maj, min);
		1222	OUTPUT:
		1223	RETVAL
		1224
1151	void	1225	void
		1226	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1227	PPCODE:
		1228	{
		1229	dREQ;
		1230
		1231	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1232	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1233	req->sv1 = newSVsv (fh_or_path);
		1234
		1235	if (SvPOK (req->sv1))
		1236	{
		1237	req->type = EIO_UTIME;
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	}
		1240	else
		1241	{
		1242	req->type = EIO_FUTIME;
		1243	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1244	}
		1245
		1246	REQ_SEND;
		1247	}
		1248
		1249	void
		1250	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1251	PPCODE:
		1252	{
		1253	dREQ;
		1254
		1255	req->sv1 = newSVsv (fh_or_path);
		1256	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1257
		1258	if (SvPOK (req->sv1))
		1259	{
		1260	req->type = EIO_TRUNCATE;
		1261	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1262	}
		1263	else
		1264	{
		1265	req->type = EIO_FTRUNCATE;
		1266	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1267	}
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1274	ALIAS:
		1275	aio_chmod = EIO_CHMOD
		1276	aio_mkdir = EIO_MKDIR
		1277	PPCODE:
		1278	{
		1279	dREQ;
		1280
		1281	req->int2 = mode;
		1282	req->sv1 = newSVsv (fh_or_path);
		1283
		1284	if (SvPOK (req->sv1))
		1285	{
		1286	req->type = ix;
		1287	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1288	}
		1289	else
		1290	{
		1291	req->type = EIO_FCHMOD;
		1292	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1293	}
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	void
		1299	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1300	PPCODE:
		1301	{
		1302	dREQ;
		1303
		1304	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1305	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1306	req->sv1 = newSVsv (fh_or_path);
		1307
		1308	if (SvPOK (req->sv1))
		1309	{
		1310	req->type = EIO_CHOWN;
		1311	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1312	}
		1313	else
		1314	{
		1315	req->type = EIO_FCHOWN;
		1316	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1317	}
		1318
		1319	REQ_SEND;
		1320	}
		1321
		1322	void
		1323	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->type = EIO_READDIR;
		1329	req->sv1 = newSVsv (pathname);
		1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1331	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1332
		1333	if (flags & EIO_READDIR_DENTS)
		1334	req->int1 |= EIO_READDIR_CUSTOM2;
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1340	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1341	ALIAS:
1156	aio_unlink = REQ_UNLINK	1342	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1343	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1344	aio_readdir = EIO_READDIR
1159	PPCODE:	1345	PPCODE:
1160	{	1346	{
1161	dREQ;	1347	dREQ;
1162		1348
1163	req->type = ix;	1349	req->type = ix;
1164	req->data = newSVsv (pathname);	1350	req->sv1 = newSVsv (pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->ptr1 = SvPVbyte_nolen (req->sv1);
1166		1352
1167	REQ_SEND;	1353	REQ_SEND;
1168	}	1354	}
1169		1355
1170	void	1356	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1357	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1358	ALIAS:
1176	aio_link = REQ_LINK	1359	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1360	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1361	aio_rename = EIO_RENAME
1179	PPCODE:	1362	PPCODE:
1180	{	1363	{
1181	dREQ;	1364	dREQ;
1182		1365
1183	req->type = ix;	1366	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1367	req->sv1 = newSVsv (oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1368	req->ptr1 = SvPVbyte_nolen (req->sv1);
1186	req->data = newSVsv (newpath);	1369	req->sv2 = newSVsv (newpath);
1187	req->dataptr = SvPVbyte_nolen (req->data);	1370	req->ptr2 = SvPVbyte_nolen (req->sv2);
1188		1371
1189	REQ_SEND;	1372	REQ_SEND;
1190	}	1373	}
1191		1374
1192	void	1375	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1376	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1377	PPCODE:
1197	{	1378	{
1198	dREQ;	1379	dREQ;
1199		1380
1200	req->type = REQ_SLEEP;	1381	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1382	req->sv1 = newSVsv (pathname);
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1383	req->ptr1 = SvPVbyte_nolen (req->sv1);
1203		1384	req->int2 = (mode_t)mode;
		1385	req->offs = dev;
		1386
1204	REQ_SEND;	1387	REQ_SEND;
1205	}	1388	}
1206		1389
1207	void	1390	void
1208	aio_group (callback=&PL_sv_undef)	1391	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1209	SV * callback	1392	ALIAS:
1210	PROTOTYPE: ;$	1393	aio_mtouch = EIO_MTOUCH
		1394	aio_msync = EIO_MSYNC
1211	PPCODE:	1395	PPCODE:
1212	{	1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = ix;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417	req->int1 = flags;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	STRLEN svlen;
		1428	char *svptr = SvPVbyte (data, svlen);
		1429	UV len = SvUV (length);
		1430
		1431	if (offset < 0)
		1432	offset += svlen;
		1433
		1434	if (offset < 0 || offset > svlen)
		1435	croak ("offset outside of scalar");
		1436
		1437	if (!SvOK (length) || len + offset > svlen)
		1438	len = svlen - offset;
		1439
		1440	{
		1441	dREQ;
		1442
		1443	req->type = EIO_MLOCK;
		1444	req->sv2 = SvREFCNT_inc (data);
		1445	req->ptr2 = (char *)svptr + offset;
		1446	req->size = len;
		1447
		1448	REQ_SEND;
		1449	}
		1450	}
		1451
		1452	void
		1453	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1454	PPCODE:
		1455	{
		1456	dREQ;
		1457
		1458	req->type = EIO_MLOCKALL;
		1459	req->int1 = flags;
		1460
		1461	REQ_SEND;
		1462	}
		1463
		1464	void
		1465	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1466	PPCODE:
		1467	{
1213	dREQ;	1468	dREQ;
		1469
		1470	req->type = EIO_BUSY;
		1471	req->nv1 = delay < 0. ? 0. : delay;
		1472
		1473	REQ_SEND;
		1474	}
		1475
		1476	void
		1477	aio_group (SV *callback=&PL_sv_undef)
		1478	PPCODE:
		1479	{
		1480	dREQ;
		1481
1214	req->type = REQ_GROUP;	1482	req->type = EIO_GROUP;
		1483
1215	req_send (req);	1484	req_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1485	XPUSHs (req_sv (req, aio_grp_stash));
1217	}	1486	}
1218		1487
1219	void	1488	void
1220	aio_nop (callback=&PL_sv_undef)	1489	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	1490	ALIAS:
		1491	aio_nop = EIO_NOP
		1492	aio_sync = EIO_SYNC
1222	PPCODE:	1493	PPCODE:
1223	{	1494	{
1224	dREQ;	1495	dREQ;
1225		1496
1226	req->type = REQ_NOP;	1497	req->type = ix;
1227		1498
1228	REQ_SEND;	1499	REQ_SEND;
1229	}	1500	}
1230		1501
		1502	int
		1503	aioreq_pri (int pri = 0)
		1504	CODE:
		1505	RETVAL = next_pri;
		1506	if (items > 0)
		1507	{
		1508	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1509	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1510	next_pri = pri;
		1511	}
		1512	OUTPUT:
		1513	RETVAL
		1514
		1515	void
		1516	aioreq_nice (int nice = 0)
		1517	CODE:
		1518	nice = next_pri - nice;
		1519	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1520	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1521	next_pri = nice;
		1522
1231	void	1523	void
1232	flush ()	1524	flush ()
1233	PROTOTYPE:
1234	CODE:	1525	CODE:
1235	while (nreqs)	1526	while (eio_nreqs ())
1236	{	1527	{
1237	poll_wait ();	1528	poll_wait ();
1238	poll_cb ();	1529	poll_cb ();
1239	}	1530	}
1240		1531
1241	void
1242	poll()
1243	PROTOTYPE:
1244	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();
1248	poll_cb ();
1249	}
1250
1251	int	1532	int
1252	poll_fileno()	1533	poll ()
1253	PROTOTYPE:
1254	CODE:	1534	CODE:
1255	RETVAL = respipe [0];	1535	poll_wait ();
1256	OUTPUT:
1257	RETVAL
1258
1259	int
1260	poll_cb(...)
1261	PROTOTYPE:
1262	CODE:
1263	RETVAL = poll_cb ();	1536	RETVAL = poll_cb ();
1264	OUTPUT:	1537	OUTPUT:
1265	RETVAL	1538	RETVAL
1266		1539
1267	void
1268	poll_wait()
1269	PROTOTYPE:
1270	CODE:
1271	if (nreqs)
1272	poll_wait ();
1273
1274	int	1540	int
1275	nreqs()	1541	poll_fileno ()
1276	PROTOTYPE:
1277	CODE:	1542	CODE:
1278	RETVAL = nreqs;	1543	RETVAL = s_epipe_fd (&respipe);
1279	OUTPUT:	1544	OUTPUT:
1280	RETVAL	1545	RETVAL
1281		1546
		1547	int
		1548	poll_cb (...)
		1549	PROTOTYPE:
		1550	CODE:
		1551	RETVAL = poll_cb ();
		1552	OUTPUT:
		1553	RETVAL
		1554
		1555	void
		1556	poll_wait ()
		1557	CODE:
		1558	poll_wait ();
		1559
		1560	int
		1561	nreqs ()
		1562	CODE:
		1563	RETVAL = eio_nreqs ();
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	int
		1568	nready ()
		1569	CODE:
		1570	RETVAL = eio_nready ();
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	int
		1575	npending ()
		1576	CODE:
		1577	RETVAL = eio_npending ();
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	int
		1582	nthreads ()
		1583	CODE:
		1584	RETVAL = eio_nthreads ();
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	int
		1589	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1590	CODE:
		1591	RETVAL = posix_fadvise (fh, offset, length, advice);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	IV
		1596	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1597	CODE:
		1598	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	void
		1603	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1604	PPCODE:
		1605	sv_unmagic (scalar, MMAP_MAGIC);
		1606	{
		1607	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1608	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1609	if (addr == (void *)-1)
		1610	XSRETURN_NO;
		1611
		1612	sv_force_normal (scalar);
		1613
		1614	/* we store the length in mg_obj, as namlen is I32 :/ */
		1615	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1616	->mg_obj = (SV *)length;
		1617
		1618	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1619
		1620	if (!(prot & PROT_WRITE))
		1621	SvREADONLY_on (scalar);
		1622
		1623	if (SvLEN (scalar))
		1624	Safefree (SvPVX (scalar));
		1625
		1626	SvPVX (scalar) = (char *)addr;
		1627	SvCUR_set (scalar, length);
		1628	SvLEN_set (scalar, 0);
		1629	SvPOK_only (scalar);
		1630
		1631	XSRETURN_YES;
		1632	}
		1633
		1634	void
		1635	munmap (SV *scalar)
		1636	CODE:
		1637	sv_unmagic (scalar, MMAP_MAGIC);
		1638
		1639	int
		1640	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1641	ALIAS:
		1642	mprotect = 1
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660
		1661	switch (ix)
		1662	{
		1663	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1664	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1665	}
		1666	}
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1672	CODE:
		1673	{
		1674	STRLEN svlen;
		1675	void *addr = SvPVbyte (scalar, svlen);
		1676	size_t len = SvUV (length);
		1677
		1678	if (offset < 0)
		1679	offset += svlen;
		1680
		1681	if (offset < 0 || offset > svlen)
		1682	croak ("offset outside of scalar");
		1683
		1684	if (!SvOK (length) || len + offset > svlen)
		1685	len = svlen - offset;
		1686
		1687	addr = (void *)(((intptr_t)addr) + offset);
		1688	eio_page_align (&addr, &len);
		1689	#if _POSIX_MEMLOCK_RANGE
		1690	RETVAL = munlock (addr, len);
		1691	#else
		1692	RETVAL = ((errno = ENOSYS), -1);
		1693	#endif
		1694	}
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	munlockall ()
		1700	CODE:
		1701	#if _POSIX_MEMLOCK
		1702	munlockall ();
		1703	#else
		1704	RETVAL = -1;
		1705	errno = ENOSYS;
		1706	#endif
		1707	OUTPUT:
		1708	RETVAL
		1709
		1710	void _on_next_submit (SV *cb)
		1711	CODE:
		1712	SvREFCNT_dec (on_next_submit);
		1713	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1714
1282	PROTOTYPES: DISABLE	1715	PROTOTYPES: DISABLE
1283		1716
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1717	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1718
1286	void	1719	void
1287	cancel (aio_req_ornot req)	1720	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1721	CODE:
1290	req_cancel (req);	1722	eio_cancel (req);
		1723
		1724	void
		1725	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1726	PPCODE:
		1727	{
		1728	if (GIMME_V != G_VOID)
		1729	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1730
		1731	if (items > 1)
		1732	{
		1733	SV *cb_cv =get_cb (callback);
		1734
		1735	SvREFCNT_dec (req->callback);
		1736	req->callback = SvREFCNT_inc (cb_cv);
		1737	}
		1738	}
1291		1739
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1740	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1741
1294	void	1742	void
1295	add (aio_req grp, ...)	1743	add (aio_req grp, ...)
1296	PPCODE:	1744	PPCODE:
1297	{	1745	{
1298	int i;	1746	int i;
1299	aio_req req;
1300		1747
1301	if (grp->fd == 2)	1748	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1749	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1750
1304	for (i = 1; i < items; ++i )	1751	for (i = 1; i < items; ++i )
1305	{	1752	{
		1753	aio_req req;
		1754
1306	if (GIMME_V != G_VOID)	1755	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1756	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1757
1309	req = SvAIO_REQ (ST (i));	1758	req = SvAIO_REQ (ST (i));
1310		1759
1311	if (req)	1760	if (req)
1312	{	1761	eio_grp_add (grp, req);
1313	++grp->length;
1314	req->grp = grp;
1315
1316	req->grp_prev = 0;
1317	req->grp_next = grp->grp_first;
1318
1319	if (grp->grp_first)
1320	grp->grp_first->grp_prev = req;
1321
1322	grp->grp_first = req;
1323	}
1324	}	1762	}
1325	}	1763	}
		1764
		1765	void
		1766	cancel_subs (aio_req_ornot req)
		1767	CODE:
		1768	req_cancel_subs (req);
1326		1769
1327	void	1770	void
1328	result (aio_req grp, ...)	1771	result (aio_req grp, ...)
1329	CODE:	1772	CODE:
1330	{	1773	{
1331	int i;	1774	int i;
		1775	AV *av;
		1776
		1777	grp->errorno = errno;
		1778
1332	AV *av = newAV ();	1779	av = newAV ();
		1780	av_extend (av, items - 1);
1333		1781
1334	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1336		1784
1337	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1339	}	1787	}
1340		1788
1341	void	1789	void
1342	lock (aio_req grp)	1790	errno (aio_req grp, int errorno = errno)
1343	CODE:	1791	CODE:
1344	++grp->length;	1792	grp->errorno = errorno;
1345		1793
1346	void	1794	void
1347	unlock (aio_req grp)
1348	CODE:
1349	aio_grp_dec (grp);
1350
1351	void
1352	feeder_limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1353	CODE:	1796	CODE:
1354	grp->fd2 = limit;	1797	eio_grp_limit (grp, limit);
1355	aio_grp_feed (grp);
1356		1798
1357	void	1799	void
1358	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1800	feed (aio_req grp, SV *callback=&PL_sv_undef)
1359	CODE:	1801	CODE:
1360	{	1802	{
1361	SvREFCNT_dec (grp->fh2);	1803	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1804	grp->sv2 = newSVsv (callback);
		1805	grp->feed = aio_grp_feed;
1363		1806
1364	if (grp->fd2 <= 0)	1807	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1808	grp->int2 = 2;
1366		1809
1367	aio_grp_feed (grp);	1810	eio_grp_limit (grp, grp->int2);
1368	}	1811	}
1369		1812

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