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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.56 by root, Mon Oct 23 14:49:51 2006 UTC vs.
Revision 1.184 by root, Tue Jul 5 20:34:42 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>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	22	# include <sys/mman.h>
27	# elif __freebsd	23	#endif
28	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
29	# include <sys/uio.h>	68	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
34	# else	287	# else
35	# error sendfile support requested but not available	288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	289	# endif
37	#endif	290	#endif
38		291	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	292	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	293	#endif
43		294	#ifndef MAP_LOCKED
44	#if __ia64	295	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
		306
		307	#ifndef makedev
		308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
		316
		317	#ifndef PAGESIZE
		318	# define PAGESIZE sysconf (_SC_PAGESIZE)
		319	#endif
		320
		321	static int req_invoke (eio_req *req);
		322	#define EIO_FINISH(req) req_invoke (req)
		323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
49		325
50	enum {	326	enum {
51	REQ_QUIT,	327	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	};	328	};
63		329
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		331
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	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
		571	case EIO_GROUP:
		572	req->int1 = 2; /* mark group as finished */
		573
		574	if (req->sv1)
		575	{
		576	int i;
		577	AV *av = (AV *)req->sv1;
		578
		579	EXTEND (SP, AvFILL (av) + 1);
		580	for (i = 0; i <= AvFILL (av); ++i)
		581	PUSHs (*av_fetch (av, i, 0));
		582	}
		583	break;
		584
		585	case EIO_NOP:
		586	case EIO_BUSY:
		587	break;
		588
		589	case EIO_READLINK:
		590	case EIO_REALPATH:
		591	if (req->result > 0)
		592	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		593	break;
		594
		595	case EIO_STAT:
		596	case EIO_LSTAT:
		597	case EIO_FSTAT:
		598	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		599	PL_laststatval = req->result;
		600	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		601	PUSHs (sv_result);
		602	break;
		603
		604	case EIO_READ:
		605	{
		606	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		607	*SvEND (req->sv2) = 0;
		608	SvPOK_only (req->sv2);
		609	SvSETMAGIC (req->sv2);
		610	PUSHs (sv_result);
		611	}
		612	break;
		613
		614	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		615	if (req->result > 0)
		616	SvIV_set (sv_result, 0);
		617	/* FALLTHROUGH */
		618
		619	default:
		620	PUSHs (sv_result);
		621	break;
		622	}
		623
		624	errno = req->errorno;
		625
		626	PUTBACK;
		627	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		628	SPAGAIN;
		629
		630	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		631	SvREFCNT_dec (sv_result);
		632	else
		633	sv_result_cache = sv_result;
		634
		635	FREETMPS;
		636	LEAVE;
		637
		638	PUTBACK;
161	}	639	}
162	}
163		640
164	static void aio_grp_dec (aio_req grp)	641	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	}	642	}
178		643
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)	644	static void req_destroy (aio_req req)
291	{	645	{
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)	646	if (req->self)
307	{	647	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	648	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	649	SvREFCNT_dec (req->self);
310	}	650	}
311		651
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	652	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	653	SvREFCNT_dec (req->sv2);
315	SvREFCNT_dec (req->callback);	654	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320		655
321	Safefree (req);	656	Safefree (req);
322	}	657	}
323		658
324	static void req_cancel (aio_req req)	659	static void req_cancel_subs (aio_req grp)
325	{	660	{
326	req->cancelled = 1;	661	aio_req sub;
327		662
328	if (req->type == REQ_GROUP)	663	if (grp->type != EIO_GROUP)
		664	return;
		665
		666	SvREFCNT_dec (grp->sv2);
		667	grp->sv2 = 0;
		668
		669	eio_grp_cancel (grp);
		670	}
		671
		672	static void create_respipe (void)
		673	{
		674	if (s_epipe_renew (&respipe))
		675	croak ("IO::AIO: unable to initialize result pipe");
		676	}
		677
		678	static void poll_wait (void)
		679	{
		680	while (eio_nreqs ())
329	{	681	{
330	aio_req sub;	682	int size;
331		683
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	684	X_LOCK (reslock);
333	req_cancel (sub);	685	size = res_queue.size;
		686	X_UNLOCK (reslock);
		687
		688	if (size)
		689	return;
		690
		691	etp_maybe_start_thread ();
		692
		693	s_epipe_wait (&respipe);
334	}	694	}
335	}	695	}
336		696
337	static int poll_cb ()	697	static int poll_cb (void)
338	{	698	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	699	for (;;)
345	{	700	{
346	pthread_mutex_lock (&reslock);	701	int res = eio_poll ();
347	req = ress;
348		702
349	if (req)	703	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;	704	croak (0);
368		705
369	--nreqs;	706	if (!max_outstanding || max_outstanding > eio_nreqs ())
		707	return res;
370		708
371	if (req->type == REQ_QUIT)	709	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	}	710	}
400
401	return count;
402	}	711	}
403		712
404	static void *aio_proc(void *arg);
405
406	static void start_thread (void)	713	static void atfork_child (void)
407	{	714	{
408	sigset_t fullsigset, oldsigset;	715	create_respipe ();
409	pthread_t tid;
410	pthread_attr_t attr;
411
412	pthread_attr_init (&attr);
413	pthread_attr_setstacksize (&attr, STACKSIZE);
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	}	716	}
505		717
506	/*****************************************************************************/	718	/*****************************************************************************/
507	/* work around various missing functions */
508		719
509	#if !HAVE_PREADWRITE	720	#if !_POSIX_MAPPED_FILES
510	# define pread aio_pread	721	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
511	# define pwrite aio_pwrite	722	# 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	723	#endif
651	#else
652	res = -1;
653	errno = ENOSYS;
654	#endif
655		724
656	if (res < 0	725	#if !_POSIX_MEMORY_PROTECTION
657	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	726	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
658	#if __solaris	727	# define PROT_NONE 0
659	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	728	# define PROT_WRITE 0
		729	# define MAP_PRIVATE 0
		730	# define MAP_SHARED 0
		731	# define MAP_FIXED 0
660	#endif	732	#endif
661	)
662	)
663	{
664	/* emulate sendfile. this is a major pain in the ass */
665	char buf[4096];
666	res = 0;
667		733
668	while (count)	734	#define MMAP_MAGIC PERL_MAGIC_ext
669	{
670	ssize_t cnt;
671
672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673		735
674	if (cnt <= 0)	736	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	{	737	{
700	DIR *dirp = opendir (path);	738	int old_errno = errno;
701	union	739	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;	740	errno = old_errno;
747	closedir (dirp);
748		741
749	if (errorno)	742	mg->mg_obj = 0; /* just in case */
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755		743
756	*namesp = (void *)names;	744	SvREADONLY_off (sv);
		745
		746	if (SvPVX (sv) != mg->mg_ptr)
		747	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		748
		749	SvCUR_set (sv, 0);
		750	SvPVX (sv) = 0;
		751	SvOK_off (sv);
		752
757	return res;	753	return 0;
758	}	754	}
		755
		756	static MGVTBL mmap_vtbl = {
		757	0, 0, 0, 0, mmap_free
		758	};
759		759
760	/*****************************************************************************/	760	/*****************************************************************************/
761		761
762	static void *aio_proc (void *thr_arg)	762	static SV * get_cb (SV *cb_sv)
763	{	763	{
764	aio_req req;	764	SvGETMAGIC (cb_sv);
765	int type;	765	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:
827	case REQ_NOP:
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	}	766	}
918		767
919	#define dREQ \	768	#define dREQ \
		769	SV *cb_cv; \
920	aio_req req; \	770	aio_req req; \
		771	int req_pri = next_pri; \
		772	next_pri = EIO_PRI_DEFAULT; \
921	\	773	\
922	if (SvOK (callback) && !SvROK (callback)) \	774	cb_cv = get_cb (callback); \
923	croak ("callback must be undef or of reference type"); \
924	\	775	\
925	Newz (0, req, 1, aio_cb); \	776	Newz (0, req, 1, eio_req); \
926	if (!req) \	777	if (!req) \
927	croak ("out of memory during aio_req allocation"); \	778	croak ("out of memory during eio_req allocation"); \
928	\	779	\
929	req->callback = newSVsv (callback)	780	req->callback = SvREFCNT_inc (cb_cv); \
		781	req->pri = req_pri
930		782
931	#define REQ_SEND \	783	#define REQ_SEND \
		784	PUTBACK; \
932	req_send (req); \	785	req_submit (req); \
		786	SPAGAIN; \
933	\	787	\
934	if (GIMME_V != G_VOID) \	788	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));	789	XPUSHs (req_sv (req, aio_req_stash));
936		790
937	MODULE = IO::AIO PACKAGE = IO::AIO	791	MODULE = IO::AIO PACKAGE = IO::AIO
938		792
939	PROTOTYPES: ENABLE	793	PROTOTYPES: ENABLE
940		794
941	BOOT:	795	BOOT:
942	{	796	{
		797	static const struct {
		798	const char *name;
		799	IV iv;
		800	} *civ, const_iv[] = {
		801	# define const_niv(name, value) { # name, (IV) value },
		802	# define const_iv(name) { # name, (IV) name },
		803	# define const_eio(name) { # name, (IV) EIO_ ## name },
		804	const_iv (EXDEV)
		805	const_iv (ENOSYS)
		806	const_iv (O_RDONLY)
		807	const_iv (O_WRONLY)
		808	const_iv (O_RDWR)
		809	const_iv (O_CREAT)
		810	const_iv (O_TRUNC)
		811	const_iv (O_EXCL)
		812	const_iv (O_APPEND)
		813
		814	const_iv (O_ASYNC)
		815	const_iv (O_DIRECT)
		816	const_iv (O_NOATIME)
		817
		818	const_iv (O_CLOEXEC)
		819	const_iv (O_NOCTTY)
		820	const_iv (O_NOFOLLOW)
		821	const_iv (O_NONBLOCK)
		822	const_iv (O_EXEC)
		823	const_iv (O_SEARCH)
		824	const_iv (O_DIRECTORY)
		825	const_iv (O_DSYNC)
		826	const_iv (O_RSYNC)
		827	const_iv (O_SYNC)
		828	const_iv (O_TTY_INIT)
		829
		830	const_iv (S_IFIFO)
		831	const_iv (S_IFCHR)
		832	const_iv (S_IFBLK)
		833	const_iv (S_IFLNK)
		834	const_iv (S_IFREG)
		835	const_iv (S_IFDIR)
		836	const_iv (S_IFWHT)
		837	const_iv (S_IFSOCK)
		838	const_iv (S_IFMT)
		839
		840	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		841	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		842	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		843	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		844	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		845	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		846
		847	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		848	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		849	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		850	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		851	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		852
		853	const_iv (ST_RDONLY)
		854	const_iv (ST_NOSUID)
		855	const_iv (ST_NODEV)
		856	const_iv (ST_NOEXEC)
		857	const_iv (ST_SYNCHRONOUS)
		858	const_iv (ST_MANDLOCK)
		859	const_iv (ST_WRITE)
		860	const_iv (ST_APPEND)
		861	const_iv (ST_IMMUTABLE)
		862	const_iv (ST_NOATIME)
		863	const_iv (ST_NODIRATIME)
		864	const_iv (ST_RELATIME)
		865
		866	const_iv (PROT_NONE)
		867	const_iv (PROT_EXEC)
		868	const_iv (PROT_READ)
		869	const_iv (PROT_WRITE)
		870
		871	/*const_iv (MAP_FIXED)*/
		872	const_iv (MAP_PRIVATE)
		873	const_iv (MAP_SHARED)
		874	const_iv (MAP_ANONYMOUS)
		875
		876	/* linuxish */
		877	const_iv (MAP_HUGETLB)
		878	const_iv (MAP_LOCKED)
		879	const_iv (MAP_NORESERVE)
		880	const_iv (MAP_POPULATE)
		881	const_iv (MAP_NONBLOCK)
		882
		883	const_eio (MCL_FUTURE)
		884	const_eio (MCL_CURRENT)
		885
		886	const_eio (MS_ASYNC)
		887	const_eio (MS_INVALIDATE)
		888	const_eio (MS_SYNC)
		889
		890	const_eio (MT_MODIFY)
		891
		892	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		893	const_eio (SYNC_FILE_RANGE_WRITE)
		894	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		895
		896	const_eio (READDIR_DENTS)
		897	const_eio (READDIR_DIRS_FIRST)
		898	const_eio (READDIR_STAT_ORDER)
		899	const_eio (READDIR_FOUND_UNKNOWN)
		900
		901	const_eio (DT_UNKNOWN)
		902	const_eio (DT_FIFO)
		903	const_eio (DT_CHR)
		904	const_eio (DT_DIR)
		905	const_eio (DT_BLK)
		906	const_eio (DT_REG)
		907	const_eio (DT_LNK)
		908	const_eio (DT_SOCK)
		909	const_eio (DT_WHT)
		910	};
		911
943	HV *stash = gv_stashpv ("IO::AIO", 1);	912	aio_stash = gv_stashpv ("IO::AIO" , 1);
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	913	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	914	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947		915
		916	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		917	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		918
		919	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		920
948	create_pipe ();	921	create_respipe ();
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950	}
951		922
		923	if (eio_init (want_poll, done_poll) < 0)
		924	croak ("IO::AIO: unable to initialise eio library");
		925
		926	/* atfork child called in fifo order, so before eio's handler */
		927	X_THREAD_ATFORK (0, 0, atfork_child);
		928	}
		929
952	void	930	void
953	min_parallel (nthreads)	931	max_poll_reqs (unsigned int nreqs)
954	int nthreads
955	PROTOTYPE: $	932	PROTOTYPE: $
		933	CODE:
		934	eio_set_max_poll_reqs (nreqs);
956		935
957	void	936	void
958	max_parallel (nthreads)	937	max_poll_time (double nseconds)
959	int nthreads
960	PROTOTYPE: $	938	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	939	CODE:
967	RETVAL = max_outstanding;	940	eio_set_max_poll_time (nseconds);
		941
		942	void
		943	min_parallel (unsigned int nthreads)
		944	PROTOTYPE: $
		945	CODE:
		946	eio_set_min_parallel (nthreads);
		947
		948	void
		949	max_parallel (unsigned int nthreads)
		950	PROTOTYPE: $
		951	CODE:
		952	eio_set_max_parallel (nthreads);
		953
		954	void
		955	max_idle (unsigned int nthreads)
		956	PROTOTYPE: $
		957	CODE:
		958	eio_set_max_idle (nthreads);
		959
		960	void
		961	idle_timeout (unsigned int seconds)
		962	PROTOTYPE: $
		963	CODE:
		964	eio_set_idle_timeout (seconds);
		965
		966	void
		967	max_outstanding (unsigned int maxreqs)
		968	PROTOTYPE: $
		969	CODE:
968	max_outstanding = nreqs;	970	max_outstanding = maxreqs;
969		971
970	void	972	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	973	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:	974	PPCODE:
978	{	975	{
979	dREQ;	976	dREQ;
980		977
981	req->type = REQ_OPEN;	978	req->type = EIO_OPEN;
982	req->data = newSVsv (pathname);	979	req->sv1 = newSVsv (pathname);
983	req->dataptr = SvPVbyte_nolen (req->data);	980	req->ptr1 = SvPVbyte_nolen (req->sv1);
984	req->fd = flags;	981	req->int1 = flags;
985	req->mode = mode;	982	req->int2 = mode;
986		983
987	REQ_SEND;	984	REQ_SEND;
988	}	985	}
989		986
990	void	987	void
991	aio_close (fh,callback=&PL_sv_undef)	988	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	989	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC	990	aio_fsync = EIO_FSYNC
998	aio_fdatasync = REQ_FDATASYNC	991	aio_fdatasync = EIO_FDATASYNC
999	PPCODE:	992	PPCODE:
1000	{	993	{
		994	int fd = s_fileno_croak (fh, 0);
1001	dREQ;	995	dREQ;
1002		996
1003	req->type = ix;	997	req->type = ix;
1004	req->fh = newSVsv (fh);	998	req->sv1 = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	999	req->int1 = fd;
1006		1000
1007	REQ_SEND (req);	1001	REQ_SEND (req);
1008	}	1002	}
1009		1003
1010	void	1004	void
		1005	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1006	PPCODE:
		1007	{
		1008	int fd = s_fileno_croak (fh, 0);
		1009	dREQ;
		1010
		1011	req->type = EIO_SYNC_FILE_RANGE;
		1012	req->sv1 = newSVsv (fh);
		1013	req->int1 = fd;
		1014	req->offs = offset;
		1015	req->size = nbytes;
		1016	req->int2 = flags;
		1017
		1018	REQ_SEND (req);
		1019	}
		1020
		1021	void
		1022	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1023	PPCODE:
		1024	{
		1025	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1026	int fd = s_fileno_croak (fh, 0);
		1027	dREQ;
		1028
		1029	if (close_pipe < 0)
		1030	{
		1031	int pipefd [2];
		1032
		1033	if (pipe (pipefd) < 0
		1034	|| close (pipefd [1]) < 0
		1035	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1036	abort (); /*D*/
		1037
		1038	close_pipe = pipefd [0];
		1039	}
		1040
		1041	req->type = EIO_DUP2;
		1042	req->int1 = close_pipe;
		1043	req->sv2 = newSVsv (fh);
		1044	req->int2 = fd;
		1045
		1046	REQ_SEND (req);
		1047	}
		1048
		1049	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1050	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:	1051	ALIAS:
1019	aio_read = REQ_READ	1052	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	1053	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	1054	PPCODE:
1023	{	1055	{
1024	aio_req req;
1025	STRLEN svlen;	1056	STRLEN svlen;
		1057	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	1058	char *svptr = SvPVbyte (data, svlen);
1027		1059	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		1060
1031	if (dataoffset < 0)	1061	if (dataoffset < 0)
1032	dataoffset += svlen;	1062	dataoffset += svlen;
1033		1063
1034	if (dataoffset < 0 || dataoffset > svlen)	1064	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	1065	croak ("dataoffset outside of data scalar");
1036		1066
1037	if (ix == REQ_WRITE)	1067	if (ix == EIO_WRITE)
1038	{	1068	{
1039	/* write: check length and adjust. */	1069	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	1070	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	1071	len = svlen - dataoffset;
1042	}	1072	}
1043	else	1073	else
1044	{	1074	{
1045	/* read: grow scalar as necessary */	1075	/* read: check type and grow scalar as necessary */
		1076	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	1077	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	1078	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		1079
1052	{	1080	{
1053	dREQ;	1081	dREQ;
1054		1082
1055	req->type = ix;	1083	req->type = ix;
1056	req->fh = newSVsv (fh);	1084	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1085	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	1086	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	1087	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	1088	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	1089	req->ptr2 = (char *)svptr + dataoffset;
		1090	req->stroffset = dataoffset;
1063		1091
1064	if (!SvREADONLY (data))	1092	if (!SvREADONLY (data))
1065	{	1093	{
1066	SvREADONLY_on (data);	1094	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	1095	req->flags |= FLAG_SV2_RO_OFF;
1068	}	1096	}
1069		1097
1070	REQ_SEND;	1098	REQ_SEND;
1071	}	1099	}
1072	}	1100	}
1073		1101
1074	void	1102	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1103	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1076	SV * out_fh	1104	ALIAS:
1077	SV * in_fh	1105	aio_readlink = EIO_READLINK
1078	UV in_offset	1106	aio_realpath = EIO_REALPATH
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$
1082	PPCODE:	1107	PPCODE:
1083	{	1108	{
		1109	SV *data;
		1110	dREQ;
		1111
		1112	req->type = ix;
		1113	req->sv1 = newSVsv (path);
		1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
		1120	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1121	PPCODE:
		1122	{
		1123	int ifd = s_fileno_croak (in_fh , 0);
		1124	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1125	dREQ;
1085		1126
1086	req->type = REQ_SENDFILE;	1127	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1128	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1129	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1130	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1131	req->int2 = ifd;
1091	req->offset = in_offset;	1132	req->offs = in_offset;
1092	req->length = length;	1133	req->size = length;
1093		1134
1094	REQ_SEND;	1135	REQ_SEND;
1095	}	1136	}
1096		1137
1097	void	1138	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1139	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1140	PPCODE:
1105	{	1141	{
		1142	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1143	dREQ;
1107		1144
1108	req->type = REQ_READAHEAD;	1145	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1146	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1147	req->int1 = fd;
1111	req->offset = offset;	1148	req->offs = offset;
1112	req->length = length;	1149	req->size = length;
1113		1150
1114	REQ_SEND;	1151	REQ_SEND;
1115	}	1152	}
1116		1153
1117	void	1154	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1155	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1156	ALIAS:
1122	aio_stat = REQ_STAT	1157	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1158	aio_lstat = EIO_LSTAT
		1159	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1160	PPCODE:
1125	{	1161	{
1126	dREQ;	1162	dREQ;
1127		1163
1128	New (0, req->statdata, 1, Stat_t);	1164	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		1165
1135	if (SvPOK (fh_or_path))	1166	if (SvPOK (req->sv1))
1136	{	1167	{
1137	req->type = ix;	1168	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);	1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140	}	1170	}
1141	else	1171	else
1142	{	1172	{
1143	req->type = REQ_FSTAT;	1173	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)));	1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}	1175	}
1147		1176
1148	REQ_SEND;	1177	REQ_SEND;
1149	}	1178	}
1150		1179
		1180	UV
		1181	major (UV dev)
		1182	ALIAS:
		1183	minor = 1
		1184	CODE:
		1185	RETVAL = ix ? major (dev) : minor (dev);
		1186	OUTPUT:
		1187	RETVAL
		1188
		1189	UV
		1190	makedev (UV maj, UV min)
		1191	CODE:
		1192	RETVAL = makedev (maj, min);
		1193	OUTPUT:
		1194	RETVAL
		1195
1151	void	1196	void
		1197	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1198	PPCODE:
		1199	{
		1200	dREQ;
		1201
		1202	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1203	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1204	req->sv1 = newSVsv (fh_or_path);
		1205
		1206	if (SvPOK (req->sv1))
		1207	{
		1208	req->type = EIO_UTIME;
		1209	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1210	}
		1211	else
		1212	{
		1213	req->type = EIO_FUTIME;
		1214	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1215	}
		1216
		1217	REQ_SEND;
		1218	}
		1219
		1220	void
		1221	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1222	PPCODE:
		1223	{
		1224	dREQ;
		1225
		1226	req->sv1 = newSVsv (fh_or_path);
		1227	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1228
		1229	if (SvPOK (req->sv1))
		1230	{
		1231	req->type = EIO_TRUNCATE;
		1232	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1233	}
		1234	else
		1235	{
		1236	req->type = EIO_FTRUNCATE;
		1237	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1238	}
		1239
		1240	REQ_SEND;
		1241	}
		1242
		1243	void
		1244	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1245	ALIAS:
		1246	aio_chmod = EIO_CHMOD
		1247	aio_mkdir = EIO_MKDIR
		1248	PPCODE:
		1249	{
		1250	dREQ;
		1251
		1252	req->int2 = mode;
		1253	req->sv1 = newSVsv (fh_or_path);
		1254
		1255	if (SvPOK (req->sv1))
		1256	{
		1257	req->type = ix;
		1258	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1259	}
		1260	else
		1261	{
		1262	req->type = EIO_FCHMOD;
		1263	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1264	}
		1265
		1266	REQ_SEND;
		1267	}
		1268
		1269	void
		1270	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1271	PPCODE:
		1272	{
		1273	dREQ;
		1274
		1275	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1276	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1277	req->sv1 = newSVsv (fh_or_path);
		1278
		1279	if (SvPOK (req->sv1))
		1280	{
		1281	req->type = EIO_CHOWN;
		1282	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1283	}
		1284	else
		1285	{
		1286	req->type = EIO_FCHOWN;
		1287	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1288	}
		1289
		1290	REQ_SEND;
		1291	}
		1292
		1293	void
		1294	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->type = EIO_READDIR;
		1300	req->sv1 = newSVsv (pathname);
		1301	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1302	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1303
		1304	if (flags & EIO_READDIR_DENTS)
		1305	req->int1 |= EIO_READDIR_CUSTOM2;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1311	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1312	ALIAS:
1156	aio_unlink = REQ_UNLINK	1313	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1314	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1315	aio_readdir = EIO_READDIR
1159	PPCODE:	1316	PPCODE:
1160	{	1317	{
1161	dREQ;	1318	dREQ;
1162		1319
1163	req->type = ix;	1320	req->type = ix;
1164	req->data = newSVsv (pathname);	1321	req->sv1 = newSVsv (pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1322	req->ptr1 = SvPVbyte_nolen (req->sv1);
1166		1323
1167	REQ_SEND;	1324	REQ_SEND;
1168	}	1325	}
1169		1326
1170	void	1327	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1328	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1329	ALIAS:
1176	aio_link = REQ_LINK	1330	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1331	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1332	aio_rename = EIO_RENAME
1179	PPCODE:	1333	PPCODE:
1180	{	1334	{
1181	dREQ;	1335	dREQ;
1182		1336
1183	req->type = ix;	1337	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1338	req->sv1 = newSVsv (oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1339	req->ptr1 = SvPVbyte_nolen (req->sv1);
1186	req->data = newSVsv (newpath);	1340	req->sv2 = newSVsv (newpath);
1187	req->dataptr = SvPVbyte_nolen (req->data);	1341	req->ptr2 = SvPVbyte_nolen (req->sv2);
1188		1342
1189	REQ_SEND;	1343	REQ_SEND;
1190	}	1344	}
1191		1345
1192	void	1346	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1347	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1348	PPCODE:
1197	{	1349	{
1198	dREQ;	1350	dREQ;
1199		1351
1200	req->type = REQ_SLEEP;	1352	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1353	req->sv1 = newSVsv (pathname);
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
1203		1355	req->int2 = (mode_t)mode;
		1356	req->offs = dev;
		1357
1204	REQ_SEND;	1358	REQ_SEND;
1205	}	1359	}
1206		1360
1207	void	1361	void
1208	aio_group (callback=&PL_sv_undef)	1362	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1209	SV * callback	1363	ALIAS:
1210	PROTOTYPE: ;$	1364	aio_mtouch = EIO_MTOUCH
		1365	aio_msync = EIO_MSYNC
1211	PPCODE:	1366	PPCODE:
1212	{	1367	{
		1368	STRLEN svlen;
		1369	char *svptr = SvPVbyte (data, svlen);
		1370	UV len = SvUV (length);
		1371
		1372	if (offset < 0)
		1373	offset += svlen;
		1374
		1375	if (offset < 0 || offset > svlen)
		1376	croak ("offset outside of scalar");
		1377
		1378	if (!SvOK (length) || len + offset > svlen)
		1379	len = svlen - offset;
		1380
		1381	{
		1382	dREQ;
		1383
		1384	req->type = ix;
		1385	req->sv2 = SvREFCNT_inc (data);
		1386	req->ptr2 = (char *)svptr + offset;
		1387	req->size = len;
		1388	req->int1 = flags;
		1389
		1390	REQ_SEND;
		1391	}
		1392	}
		1393
		1394	void
		1395	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1396	PPCODE:
		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 = EIO_MLOCK;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	dREQ;
		1428
		1429	req->type = EIO_MLOCKALL;
		1430	req->int1 = flags;
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1437	PPCODE:
		1438	{
1213	dREQ;	1439	dREQ;
		1440
		1441	req->type = EIO_BUSY;
		1442	req->nv1 = delay < 0. ? 0. : delay;
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_group (SV *callback=&PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
1214	req->type = REQ_GROUP;	1453	req->type = EIO_GROUP;
		1454
1215	req_send (req);	1455	req_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1456	XPUSHs (req_sv (req, aio_grp_stash));
1217	}	1457	}
1218		1458
1219	void	1459	void
1220	aio_nop (callback=&PL_sv_undef)	1460	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	1461	ALIAS:
		1462	aio_nop = EIO_NOP
		1463	aio_sync = EIO_SYNC
1222	PPCODE:	1464	PPCODE:
1223	{	1465	{
1224	dREQ;	1466	dREQ;
1225		1467
1226	req->type = REQ_NOP;	1468	req->type = ix;
1227		1469
1228	REQ_SEND;	1470	REQ_SEND;
1229	}	1471	}
1230		1472
		1473	int
		1474	aioreq_pri (int pri = 0)
		1475	CODE:
		1476	RETVAL = next_pri;
		1477	if (items > 0)
		1478	{
		1479	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1480	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1481	next_pri = pri;
		1482	}
		1483	OUTPUT:
		1484	RETVAL
		1485
		1486	void
		1487	aioreq_nice (int nice = 0)
		1488	CODE:
		1489	nice = next_pri - nice;
		1490	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1491	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1492	next_pri = nice;
		1493
1231	void	1494	void
1232	flush ()	1495	flush ()
1233	PROTOTYPE:
1234	CODE:	1496	CODE:
1235	while (nreqs)	1497	while (eio_nreqs ())
1236	{	1498	{
1237	poll_wait ();	1499	poll_wait ();
1238	poll_cb ();	1500	poll_cb ();
1239	}	1501	}
1240		1502
1241	void
1242	poll()
1243	PROTOTYPE:
1244	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();
1248	poll_cb ();
1249	}
1250
1251	int	1503	int
1252	poll_fileno()	1504	poll ()
1253	PROTOTYPE:
1254	CODE:	1505	CODE:
1255	RETVAL = respipe [0];	1506	poll_wait ();
1256	OUTPUT:
1257	RETVAL
1258
1259	int
1260	poll_cb(...)
1261	PROTOTYPE:
1262	CODE:
1263	RETVAL = poll_cb ();	1507	RETVAL = poll_cb ();
1264	OUTPUT:	1508	OUTPUT:
1265	RETVAL	1509	RETVAL
1266		1510
1267	void
1268	poll_wait()
1269	PROTOTYPE:
1270	CODE:
1271	if (nreqs)
1272	poll_wait ();
1273
1274	int	1511	int
1275	nreqs()	1512	poll_fileno ()
1276	PROTOTYPE:
1277	CODE:	1513	CODE:
1278	RETVAL = nreqs;	1514	RETVAL = s_epipe_fd (&respipe);
1279	OUTPUT:	1515	OUTPUT:
1280	RETVAL	1516	RETVAL
1281		1517
		1518	int
		1519	poll_cb (...)
		1520	PROTOTYPE:
		1521	CODE:
		1522	RETVAL = poll_cb ();
		1523	OUTPUT:
		1524	RETVAL
		1525
		1526	void
		1527	poll_wait ()
		1528	CODE:
		1529	poll_wait ();
		1530
		1531	int
		1532	nreqs ()
		1533	CODE:
		1534	RETVAL = eio_nreqs ();
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	nready ()
		1540	CODE:
		1541	RETVAL = eio_nready ();
		1542	OUTPUT:
		1543	RETVAL
		1544
		1545	int
		1546	npending ()
		1547	CODE:
		1548	RETVAL = eio_npending ();
		1549	OUTPUT:
		1550	RETVAL
		1551
		1552	int
		1553	nthreads ()
		1554	CODE:
		1555	RETVAL = eio_nthreads ();
		1556	OUTPUT:
		1557	RETVAL
		1558
		1559	int
		1560	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1561	CODE:
		1562	RETVAL = posix_fadvise (fh, offset, length, advice);
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	ssize_t
		1567	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1568	CODE:
		1569	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1570	OUTPUT:
		1571	RETVAL
		1572
		1573	void
		1574	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1575	PPCODE:
		1576	sv_unmagic (scalar, MMAP_MAGIC);
		1577	{
		1578	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1579	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1580	if (addr == (void *)-1)
		1581	XSRETURN_NO;
		1582
		1583	sv_force_normal (scalar);
		1584
		1585	/* we store the length in mg_obj, as namlen is I32 :/ */
		1586	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1587	->mg_obj = (SV *)length;
		1588
		1589	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1590
		1591	if (!(prot & PROT_WRITE))
		1592	SvREADONLY_on (scalar);
		1593
		1594	if (SvLEN (scalar))
		1595	Safefree (SvPVX (scalar));
		1596
		1597	SvPVX (scalar) = (char *)addr;
		1598	SvCUR_set (scalar, length);
		1599	SvLEN_set (scalar, 0);
		1600	SvPOK_only (scalar);
		1601
		1602	XSRETURN_YES;
		1603	}
		1604
		1605	void
		1606	munmap (SV *scalar)
		1607	CODE:
		1608	sv_unmagic (scalar, MMAP_MAGIC);
		1609
		1610	int
		1611	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1612	ALIAS:
		1613	mprotect = 1
		1614	CODE:
		1615	{
		1616	STRLEN svlen;
		1617	void *addr = SvPVbyte (scalar, svlen);
		1618	size_t len = SvUV (length);
		1619
		1620	if (offset < 0)
		1621	offset += svlen;
		1622
		1623	if (offset < 0 || offset > svlen)
		1624	croak ("offset outside of scalar");
		1625
		1626	if (!SvOK (length) || len + offset > svlen)
		1627	len = svlen - offset;
		1628
		1629	addr = (void *)(((intptr_t)addr) + offset);
		1630	eio_page_align (&addr, &len);
		1631
		1632	switch (ix)
		1633	{
		1634	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1635	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1636	}
		1637	}
		1638	OUTPUT:
		1639	RETVAL
		1640
		1641	int
		1642	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		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	#if _POSIX_MEMLOCK_RANGE
		1661	RETVAL = munlock (addr, len);
		1662	#else
		1663	RETVAL = ((errno = ENOSYS), -1);
		1664	#endif
		1665	}
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	munlockall ()
		1671	CODE:
		1672	#if _POSIX_MEMLOCK
		1673	munlockall ();
		1674	#else
		1675	RETVAL = -1;
		1676	errno = ENOSYS;
		1677	#endif
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void _on_next_submit (SV *cb)
		1682	CODE:
		1683	SvREFCNT_dec (on_next_submit);
		1684	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1685
1282	PROTOTYPES: DISABLE	1686	PROTOTYPES: DISABLE
1283		1687
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1688	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1689
1286	void	1690	void
1287	cancel (aio_req_ornot req)	1691	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1692	CODE:
1290	req_cancel (req);	1693	eio_cancel (req);
1291		1694
1292	void	1695	void
1293	cb (aio_req req, SV *callback=&PL_sv_undef)	1696	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1294	CODE:	1697	PPCODE:
		1698	{
		1699	if (GIMME_V != G_VOID)
		1700	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1701
		1702	if (items > 1)
		1703	{
		1704	SV *cb_cv =get_cb (callback);
		1705
1295	SvREFCNT_dec (req->callback);	1706	SvREFCNT_dec (req->callback);
1296	req->callback = newSVsv (callback);	1707	req->callback = SvREFCNT_inc (cb_cv);
		1708	}
		1709	}
1297		1710
1298	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1711	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1299		1712
1300	void	1713	void
1301	add (aio_req grp, ...)	1714	add (aio_req grp, ...)
1302	PPCODE:	1715	PPCODE:
1303	{	1716	{
1304	int i;	1717	int i;
1305	aio_req req;
1306		1718
1307	if (grp->fd == 2)	1719	if (grp->int1 == 2)
1308	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1720	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1309		1721
1310	for (i = 1; i < items; ++i )	1722	for (i = 1; i < items; ++i )
1311	{	1723	{
		1724	aio_req req;
		1725
1312	if (GIMME_V != G_VOID)	1726	if (GIMME_V != G_VOID)
1313	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1727	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1314		1728
1315	req = SvAIO_REQ (ST (i));	1729	req = SvAIO_REQ (ST (i));
1316		1730
1317	if (req)	1731	if (req)
1318	{	1732	eio_grp_add (grp, req);
1319	++grp->length;
1320	req->grp = grp;
1321
1322	req->grp_prev = 0;
1323	req->grp_next = grp->grp_first;
1324
1325	if (grp->grp_first)
1326	grp->grp_first->grp_prev = req;
1327
1328	grp->grp_first = req;
1329	}
1330	}	1733	}
1331	}	1734	}
		1735
		1736	void
		1737	cancel_subs (aio_req_ornot req)
		1738	CODE:
		1739	req_cancel_subs (req);
1332		1740
1333	void	1741	void
1334	result (aio_req grp, ...)	1742	result (aio_req grp, ...)
1335	CODE:	1743	CODE:
1336	{	1744	{
1337	int i;	1745	int i;
		1746	AV *av;
		1747
		1748	grp->errorno = errno;
		1749
1338	AV *av = newAV ();	1750	av = newAV ();
		1751	av_extend (av, items - 1);
1339		1752
1340	for (i = 1; i < items; ++i )	1753	for (i = 1; i < items; ++i )
1341	av_push (av, newSVsv (ST (i)));	1754	av_push (av, newSVsv (ST (i)));
1342		1755
1343	SvREFCNT_dec (grp->data);	1756	SvREFCNT_dec (grp->sv1);
1344	grp->data = (SV *)av;	1757	grp->sv1 = (SV *)av;
1345	}	1758	}
1346		1759
1347	void	1760	void
		1761	errno (aio_req grp, int errorno = errno)
		1762	CODE:
		1763	grp->errorno = errorno;
		1764
		1765	void
1348	feed_limit (aio_req grp, int limit)	1766	limit (aio_req grp, int limit)
1349	CODE:	1767	CODE:
1350	grp->fd2 = limit;	1768	eio_grp_limit (grp, limit);
1351	aio_grp_feed (grp);
1352		1769
1353	void	1770	void
1354	feed (aio_req grp, SV *callback=&PL_sv_undef)	1771	feed (aio_req grp, SV *callback=&PL_sv_undef)
1355	CODE:	1772	CODE:
1356	{	1773	{
1357	SvREFCNT_dec (grp->fh2);	1774	SvREFCNT_dec (grp->sv2);
1358	grp->fh2 = newSVsv (callback);	1775	grp->sv2 = newSVsv (callback);
		1776	grp->feed = aio_grp_feed;
1359		1777
1360	if (grp->fd2 <= 0)	1778	if (grp->int2 <= 0)
1361	grp->fd2 = 2;	1779	grp->int2 = 2;
1362		1780
1363	aio_grp_feed (grp);	1781	eio_grp_limit (grp, grp->int2);
1364	}	1782	}
1365		1783

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