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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.60 by root, Mon Oct 23 20:05:27 2006 UTC vs.
Revision 1.170 by root, Wed Aug 4 16:09:36 2010 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	22	# include <sys/mman.h>
27	# elif __freebsd	23	#endif
28	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
29	# include <sys/uio.h>	68	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef ST_NODEV
		171	# define ST_NODEV 0
		172	#endif
		173	#ifndef ST_NOEXEC
		174	# define ST_NOEXEC 0
		175	#endif
		176	#ifndef ST_SYNCHRONOUS
		177	# define ST_SYNCHRONOUS 0
		178	#endif
		179	#ifndef ST_MANDLOCK
		180	# define ST_MANDLOCK 0
		181	#endif
		182	#ifndef ST_WRITE
		183	# define ST_WRITE 0
		184	#endif
		185	#ifndef ST_APPEND
		186	# define ST_APPEND 0
		187	#endif
		188	#ifndef ST_IMMUTABLE
		189	# define ST_IMMUTABLE 0
		190	#endif
		191	#ifndef ST_NOATIME
		192	# define ST_NOATIME 0
		193	#endif
		194	#ifndef ST_NODIRATIME
		195	# define ST_NODIRATIME 0
		196	#endif
		197	#ifndef ST_RELATIME
		198	# define ST_RELATIME 0
		199	#endif
		200
		201	#ifndef MCL_CURRENT
		202	# define MCL_CURRENT 0
		203	#endif
		204	#ifndef MCL_FUTURE
		205	# define MCL_FUTURE 0
		206	#endif
		207
		208	#ifndef MAP_ANONYMOUS
		209	# ifdef MAP_ANON
		210	# define MAP_ANONYMOUS MAP_ANON
34	# else	211	# else
35	# error sendfile support requested but not available	212	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	213	# endif
37	#endif	214	#endif
38		215	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	216	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	217	#endif
43		218	#ifndef MAP_LOCKED
44	#if __ia64	219	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	220	#endif
		221	#ifndef MAP_NORESERVE
		222	# define MAP_NORESERVE 0
		223	#endif
		224	#ifndef MAP_POPULATE
		225	# define MAP_POPULATE 0
		226	#endif
		227	#ifndef MAP_NONBLOCK
		228	# define MAP_NONBLOCK 0
		229	#endif
		230
		231	#ifndef PAGESIZE
		232	# define PAGESIZE sysconf (_SC_PAGESIZE)
		233	#endif
		234
		235	static int req_invoke (eio_req *req);
		236	#define EIO_FINISH(req) req_invoke (req)
		237	static void req_destroy (eio_req *grp);
		238	#define EIO_DESTROY(req) req_destroy (req)
49		239
50	enum {	240	enum {
51	REQ_QUIT,	241	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	};	242	};
63		243
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	244	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		245
67	typedef struct aio_cb
68	{
69	struct aio_cb *volatile next;
70
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;
80	int type;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84
85	unsigned char flags;
86	unsigned char pri;
87
88	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	246	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	247	typedef eio_req *aio_req_ornot;
98		248
99	enum {	249	static SV *on_next_submit;
100	PRI_MIN = 4,	250	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = -4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	251	static int max_outstanding;
112	static int respipe [2];
113		252
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	253	static s_epipe respipe;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		254
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	255	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	256	static void req_cancel (aio_req req);
122	static void req_free (aio_req req);	257
		258	static void want_poll (void)
		259	{
		260	/* write a dummy byte to the pipe so fh becomes ready */
		261	s_epipe_signal (&respipe);
		262	}
		263
		264	static void done_poll (void)
		265	{
		266	/* read any signals sent by the worker threads */
		267	s_epipe_drain (&respipe);
		268	}
123		269
124	/* must be called at most once */	270	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	271	static SV *req_sv (aio_req req, HV *stash)
126	{	272	{
127	if (!req->self)	273	if (!req->self)
128	{	274	{
129	req->self = (SV *)newHV ();	275	req->self = (SV *)newHV ();
130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	276	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131	}	277	}
132		278
133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	279	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134	}	280	}
135		281
136	static aio_req SvAIO_REQ (SV *sv)	282	static aio_req SvAIO_REQ (SV *sv)
137	{	283	{
138	MAGIC *mg;	284	MAGIC *mg;
139		285
140	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	286	if (!SvROK (sv)
		287	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		288	&& SvSTASH (SvRV (sv)) != aio_req_stash
		289	&& !sv_derived_from (sv, "IO::AIO::REQ")))
141	croak ("object of class " AIO_REQ_KLASS " expected");	290	croak ("object of class IO::AIO::REQ expected");
142		291
143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	292	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144		293
145	return mg ? (aio_req)mg->mg_ptr : 0;	294	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	295	}
147		296
148	static void aio_grp_feed (aio_req grp)	297	static void aio_grp_feed (aio_req grp)
149	{	298	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	299	if (grp->sv2 && SvOK (grp->sv2))
151	{	300	{
152	int old_len = grp->length;	301	dSP;
153		302
154	if (grp->fh2 && SvOK (grp->fh2))	303	ENTER;
		304	SAVETMPS;
		305	PUSHMARK (SP);
		306	XPUSHs (req_sv (grp, aio_grp_stash));
		307	PUTBACK;
		308	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		309	SPAGAIN;
		310	FREETMPS;
		311	LEAVE;
		312	}
		313	}
		314
		315	static void req_submit (eio_req *req)
		316	{
		317	eio_submit (req);
		318
		319	if (expect_false (on_next_submit))
		320	{
		321	dSP;
		322	SV *cb = sv_2mortal (on_next_submit);
		323
		324	on_next_submit = 0;
		325
		326	PUSHMARK (SP);
		327	PUTBACK;
		328	call_sv (cb, G_DISCARD | G_EVAL);
		329	}
		330	}
		331
		332	static int req_invoke (eio_req *req)
		333	{
		334	if (req->flags & FLAG_SV2_RO_OFF)
		335	SvREADONLY_off (req->sv2);
		336
		337	if (!EIO_CANCELLED (req) && req->callback)
		338	{
		339	dSP;
		340	static SV *sv_result_cache; /* caches the result integer SV */
		341	SV *sv_result;
		342
		343	ENTER;
		344	SAVETMPS;
		345	PUSHMARK (SP);
		346	EXTEND (SP, 1);
		347
		348	/* do not recreate the result IV from scratch each time */
		349	if (expect_true (sv_result_cache))
155	{	350	{
156	dSP;	351	sv_result = sv_result_cache; sv_result_cache = 0;
157		352	SvIV_set (sv_result, req->result);
158	ENTER;
159	SAVETMPS;
160	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);
164	SPAGAIN;
165	FREETMPS;
166	LEAVE;
167	}	353	}
168		354	else
169	/* stop if no progress has been made */
170	if (old_len == grp->length)
171	{	355	{
172	SvREFCNT_dec (grp->fh2);	356	sv_result = newSViv (req->result);
173	grp->fh2 = 0;	357	SvREADONLY_on (sv_result);
174	break;
175	}	358	}
		359
		360	switch (req->type)
		361	{
		362	case EIO_READDIR:
		363	{
		364	SV *rv = &PL_sv_undef;
		365
		366	if (req->result >= 0)
		367	{
		368	int i;
		369	char *names = (char *)req->ptr2;
		370	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		371	AV *av = newAV ();
		372
		373	av_extend (av, req->result - 1);
		374
		375	for (i = 0; i < req->result; ++i)
		376	{
		377	if (req->int1 & EIO_READDIR_DENTS)
		378	{
		379	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		380
		381	if (req->int1 & EIO_READDIR_CUSTOM2)
		382	{
		383	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		384	AV *avent = newAV ();
		385
		386	av_extend (avent, 2);
		387
		388	if (!sv_type [ent->type])
		389	{
		390	sv_type [ent->type] = newSViv (ent->type);
		391	SvREADONLY_on (sv_type [ent->type]);
		392	}
		393
		394	av_store (avent, 0, namesv);
		395	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		396	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		397
		398	av_store (av, i, newRV_noinc ((SV *)avent));
		399	}
		400	else
		401	av_store (av, i, namesv);
		402
		403	++ent;
		404	}
		405	else
		406	{
		407	SV *name = newSVpv (names, 0);
		408	av_store (av, i, name);
		409	names += SvCUR (name) + 1;
		410	}
		411	}
		412
		413	rv = sv_2mortal (newRV_noinc ((SV *)av));
		414	}
		415
		416	PUSHs (rv);
		417
		418	if (req->int1 & EIO_READDIR_CUSTOM1)
		419	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		420	}
		421	break;
		422
		423	case EIO_OPEN:
		424	{
		425	/* convert fd to fh */
		426	SV *fh = &PL_sv_undef;
		427
		428	if (req->result >= 0)
		429	{
		430	GV *gv = (GV *)sv_newmortal ();
		431	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		432	char sym [64];
		433	int symlen;
		434
		435	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		436	gv_init (gv, aio_stash, sym, symlen, 0);
		437
		438	symlen = snprintf (
		439	sym,
		440	sizeof (sym),
		441	"%s&=%d",
		442	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		443	(int)req->result
		444	);
		445
		446	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		447	fh = (SV *)gv;
		448	}
		449
		450	PUSHs (fh);
		451	}
		452	break;
		453
		454	case EIO_STATVFS:
		455	case EIO_FSTATVFS:
		456	{
		457	SV *rv = &PL_sv_undef;
		458
		459	if (req->result >= 0)
		460	{
		461	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		462	HV *hv = newHV ();
		463
		464	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		465
		466	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		467	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		468	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		469	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		470	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		471	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		472	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		473	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		474	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		475	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		476	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		477	}
		478
		479	PUSHs (rv);
		480	}
		481
		482	break;
		483
		484	case EIO_GROUP:
		485	req->int1 = 2; /* mark group as finished */
		486
		487	if (req->sv1)
		488	{
		489	int i;
		490	AV *av = (AV *)req->sv1;
		491
		492	EXTEND (SP, AvFILL (av) + 1);
		493	for (i = 0; i <= AvFILL (av); ++i)
		494	PUSHs (*av_fetch (av, i, 0));
		495	}
		496	break;
		497
		498	case EIO_NOP:
		499	case EIO_BUSY:
		500	break;
		501
		502	case EIO_READLINK:
		503	if (req->result > 0)
		504	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		505	break;
		506
		507	case EIO_STAT:
		508	case EIO_LSTAT:
		509	case EIO_FSTAT:
		510	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		511	PL_laststatval = req->result;
		512	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		513	PUSHs (sv_result);
		514	break;
		515
		516	case EIO_READ:
		517	{
		518	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		519	*SvEND (req->sv2) = 0;
		520	SvPOK_only (req->sv2);
		521	SvSETMAGIC (req->sv2);
		522	PUSHs (sv_result);
		523	}
		524	break;
		525
		526	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		527	if (req->result > 0)
		528	SvIV_set (sv_result, 0);
		529	/* FALLTHROUGH */
		530
		531	default:
		532	PUSHs (sv_result);
		533	break;
		534	}
		535
		536	errno = req->errorno;
		537
		538	PUTBACK;
		539	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		540	SPAGAIN;
		541
		542	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		543	SvREFCNT_dec (sv_result);
		544	else
		545	sv_result_cache = sv_result;
		546
		547	FREETMPS;
		548	LEAVE;
		549
		550	PUTBACK;
176	}	551	}
177	}
178		552
179	static void aio_grp_dec (aio_req grp)	553	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	554	}
193		555
194	static void poll_wait ()
195	{
196	while (nreqs)
197	{
198	aio_req req;
199	pthread_mutex_lock (&reslock);
200	req = ress;
201	pthread_mutex_unlock (&reslock);
202
203	if (req)
204	return;
205
206	fd_set rfd;
207	FD_ZERO(&rfd);
208	FD_SET(respipe [0], &rfd);
209
210	select (respipe [0] + 1, &rfd, 0, 0, 0);
211	}
212	}
213
214	static void req_invoke (aio_req req)
215	{
216	dSP;
217	int errorno = errno;
218
219	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220	return;
221
222	errno = req->errorno;
223
224	ENTER;
225	SAVETMPS;
226	PUSHMARK (SP);
227	EXTEND (SP, 1);
228
229	switch (req->type)
230	{
231	case REQ_READDIR:
232	{
233	SV *rv = &PL_sv_undef;
234
235	if (req->result >= 0)
236	{
237	char *buf = req->data2ptr;
238	AV *av = newAV ();
239
240	while (req->result)
241	{
242	SV *sv = newSVpv (buf, 0);
243
244	av_push (av, sv);
245	buf += SvCUR (sv) + 1;
246	req->result--;
247	}
248
249	rv = sv_2mortal (newRV_noinc ((SV *)av));
250	}
251
252	PUSHs (rv);
253	}
254	break;
255
256	case REQ_OPEN:
257	{
258	/* convert fd to fh */
259	SV *fh;
260
261	PUSHs (sv_2mortal (newSViv (req->result)));
262	PUTBACK;
263	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264	SPAGAIN;
265
266	fh = SvREFCNT_inc (POPs);
267
268	PUSHMARK (SP);
269	XPUSHs (sv_2mortal (fh));
270	}
271	break;
272
273	case REQ_GROUP:
274	req->fd = 2; /* mark group as finished */
275
276	if (req->data)
277	{
278	int i;
279	AV *av = (AV *)req->data;
280
281	EXTEND (SP, AvFILL (av) + 1);
282	for (i = 0; i <= AvFILL (av); ++i)
283	PUSHs (*av_fetch (av, i, 0));
284	}
285	break;
286
287	case REQ_NOP:
288	case REQ_SLEEP:
289	break;
290
291	default:
292	PUSHs (sv_2mortal (newSViv (req->result)));
293	break;
294	}
295
296
297	PUTBACK;
298	call_sv (req->callback, G_VOID | G_EVAL);
299	SPAGAIN;
300
301	FREETMPS;
302	LEAVE;
303
304	errno = errorno;
305
306	if (SvTRUE (ERRSV))
307	{
308	req_free (req);
309	croak (0);
310	}
311	}
312
313	static void req_free (aio_req req)	556	static void req_destroy (aio_req req)
314	{	557	{
315	if (req->grp)
316	{
317	aio_req grp = req->grp;
318
319	/* unlink request */
320	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
321	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
322
323	if (grp->grp_first == req)
324	grp->grp_first = req->grp_next;
325
326	aio_grp_dec (grp);
327	}
328
329	if (req->self)	558	if (req->self)
330	{	559	{
331	sv_unmagic (req->self, PERL_MAGIC_ext);	560	sv_unmagic (req->self, PERL_MAGIC_ext);
332	SvREFCNT_dec (req->self);	561	SvREFCNT_dec (req->self);
333	}	562	}
334		563
335	SvREFCNT_dec (req->data);
336	SvREFCNT_dec (req->fh);	564	SvREFCNT_dec (req->sv1);
337	SvREFCNT_dec (req->fh2);	565	SvREFCNT_dec (req->sv2);
338	SvREFCNT_dec (req->callback);	566	SvREFCNT_dec (req->callback);
339	Safefree (req->statdata);
340
341	if (req->type == REQ_READDIR && req->result >= 0)
342	free (req->data2ptr);
343		567
344	Safefree (req);	568	Safefree (req);
345	}	569	}
346		570
347	static void req_cancel (aio_req req)	571	static void req_cancel_subs (aio_req grp)
348	{	572	{
349	req->flags |= FLAG_CANCELLED;	573	aio_req sub;
350		574
351	if (req->type == REQ_GROUP)	575	if (grp->type != EIO_GROUP)
		576	return;
		577
		578	SvREFCNT_dec (grp->sv2);
		579	grp->sv2 = 0;
		580
		581	eio_grp_cancel (grp);
		582	}
		583
		584	static void
		585	create_respipe (void)
		586	{
		587	if (s_epipe_renew (&respipe))
		588	croak ("IO::AIO: unable to initialize result pipe");
		589	}
		590
		591	static void poll_wait (void)
		592	{
		593	while (eio_nreqs ())
352	{	594	{
353	aio_req sub;	595	int size;
354		596
355	for (sub = req->grp_first; sub; sub = sub->grp_next)	597	X_LOCK (reslock);
356	req_cancel (sub);	598	size = res_queue.size;
		599	X_UNLOCK (reslock);
		600
		601	if (size)
		602	return;
		603
		604	etp_maybe_start_thread ();
		605
		606	s_epipe_wait (&respipe);
357	}	607	}
358	}	608	}
359		609
360	static int poll_cb ()	610	static int poll_cb (void)
361	{	611	{
362	dSP;
363	int count = 0;
364	int do_croak = 0;
365	aio_req req;
366
367	for (;;)	612	for (;;)
368	{	613	{
369	pthread_mutex_lock (&reslock);	614	int res = eio_poll ();
370	req = ress;
371		615
372	if (req)	616	if (res > 0)
373	{
374	ress = req->next;
375
376	if (!ress)
377	{
378	/* read any signals sent by the worker threads */
379	char buf [32];
380	while (read (respipe [0], buf, 32) == 32)
381	;
382
383	rese = 0;
384	}
385	}
386
387	pthread_mutex_unlock (&reslock);
388
389	if (!req)
390	break;	617	croak (0);
391		618
392	--nreqs;	619	if (!max_outstanding || max_outstanding > eio_nreqs ())
		620	return res;
393		621
394	if (req->type == REQ_QUIT)	622	poll_wait ();
395	started--;
396	else if (req->type == REQ_GROUP && req->length)
397	{
398	req->fd = 1; /* mark request as delayed */
399	continue;
400	}
401	else
402	{
403	if (req->type == REQ_READ)
404	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407	SvREADONLY_off (req->data);
408
409	if (req->statdata)
410	{
411	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412	PL_laststatval = req->result;
413	PL_statcache = *(req->statdata);
414	}
415
416	req_invoke (req);
417
418	count++;
419	}
420
421	req_free (req);
422	}	623	}
423
424	return count;
425	}	624	}
426		625
427	static void *aio_proc(void *arg);
428
429	static void start_thread (void)	626	static void atfork_child (void)
430	{	627	{
431	sigset_t fullsigset, oldsigset;	628	create_respipe ();
432	pthread_t tid;
433	pthread_attr_t attr;
434
435	pthread_attr_init (&attr);
436	pthread_attr_setstacksize (&attr, STACKSIZE);
437	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
438
439	sigfillset (&fullsigset);
440	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441
442	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
443	started++;
444
445	sigprocmask (SIG_SETMASK, &oldsigset, 0);
446	}
447
448	static void req_send (aio_req req)
449	{
450	while (started < wanted && nreqs >= started)
451	start_thread ();
452
453	++nreqs;
454
455	pthread_mutex_lock (&reqlock);
456
457	req->next = 0;
458
459	if (reqe)
460	{
461	reqe->next = req;
462	reqe = req;
463	}
464	else
465	reqe = reqs = req;
466
467	pthread_cond_signal (&reqwait);
468	pthread_mutex_unlock (&reqlock);
469
470	if (nreqs > max_outstanding)
471	for (;;)
472	{
473	poll_cb ();
474
475	if (nreqs <= max_outstanding)
476	break;
477
478	poll_wait ();
479	}
480	}
481
482	static void end_thread (void)
483	{
484	aio_req req;
485	Newz (0, req, 1, aio_cb);
486	req->type = REQ_QUIT;
487
488	req_send (req);
489	}
490
491	static void min_parallel (int nthreads)
492	{
493	if (wanted < nthreads)
494	wanted = nthreads;
495	}
496
497	static void max_parallel (int nthreads)
498	{
499	int cur = started;
500
501	if (wanted > nthreads)
502	wanted = nthreads;
503
504	while (cur > wanted)
505	{
506	end_thread ();
507	cur--;
508	}
509
510	while (started > wanted)
511	{
512	poll_wait ();
513	poll_cb ();
514	}
515	}
516
517	static void create_pipe ()
518	{
519	if (pipe (respipe))
520	croak ("unable to initialize result pipe");
521
522	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
523	croak ("cannot set result pipe to nonblocking mode");
524
525	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
526	croak ("cannot set result pipe to nonblocking mode");
527	}	629	}
528		630
529	/*****************************************************************************/	631	/*****************************************************************************/
530	/* work around various missing functions */
531		632
532	#if !HAVE_PREADWRITE	633	#if !_POSIX_MAPPED_FILES
533	# define pread aio_pread	634	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
534	# define pwrite aio_pwrite	635	# define munmap(addr,length) (errno = ENOSYS, -1)
535
536	/*
537	* make our pread/pwrite safe against themselves, but not against
538	* normal read/write by using a mutex. slows down execution a lot,
539	* but that's your problem, not mine.
540	*/
541	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
542
543	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
544	{
545	ssize_t res;
546	off_t ooffset;
547
548	pthread_mutex_lock (&preadwritelock);
549	ooffset = lseek (fd, 0, SEEK_CUR);
550	lseek (fd, offset, SEEK_SET);
551	res = read (fd, buf, count);
552	lseek (fd, ooffset, SEEK_SET);
553	pthread_mutex_unlock (&preadwritelock);
554
555	return res;
556	}
557
558	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
559	{
560	ssize_t res;
561	off_t ooffset;
562
563	pthread_mutex_lock (&preadwritelock);
564	ooffset = lseek (fd, 0, SEEK_CUR);
565	lseek (fd, offset, SEEK_SET);
566	res = write (fd, buf, count);
567	lseek (fd, offset, SEEK_SET);
568	pthread_mutex_unlock (&preadwritelock);
569
570	return res;
571	}
572	#endif
573
574	#if !HAVE_FDATASYNC
575	# define fdatasync fsync
576	#endif
577
578	#if !HAVE_READAHEAD
579	# define readahead aio_readahead
580
581	static ssize_t readahead (int fd, off_t offset, size_t count)
582	{
583	char readahead_buf[4096];
584
585	while (count > 0)
586	{
587	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
588
589	pread (fd, readahead_buf, len, offset);
590	offset += len;
591	count -= len;
592	}
593
594	errno = 0;
595	}
596	#endif
597
598	#if !HAVE_READDIR_R
599	# define readdir_r aio_readdir_r
600
601	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
602
603	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
604	{
605	struct dirent *e;
606	int errorno;
607
608	pthread_mutex_lock (&readdirlock);
609
610	e = readdir (dirp);
611	errorno = errno;
612
613	if (e)
614	{
615	*res = ent;
616	strcpy (ent->d_name, e->d_name);
617	}
618	else
619	*res = 0;
620
621	pthread_mutex_unlock (&readdirlock);
622
623	errno = errorno;
624	return e ? 0 : -1;
625	}
626	#endif
627
628	/* sendfile always needs emulation */
629	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
630	{
631	ssize_t res;
632
633	if (!count)
634	return 0;
635
636	#if HAVE_SENDFILE
637	# if __linux
638	res = sendfile (ofd, ifd, &offset, count);
639
640	# elif __freebsd
641	/*
642	* Of course, the freebsd sendfile is a dire hack with no thoughts
643	* wasted on making it similar to other I/O functions.
644	*/
645	{
646	off_t sbytes;
647	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648
649	if (res < 0 && sbytes)
650	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
651	res = sbytes;
652	}
653
654	# elif __hpux
655	res = sendfile (ofd, ifd, offset, count, 0, 0);
656
657	# elif __solaris
658	{
659	struct sendfilevec vec;
660	size_t sbytes;
661
662	vec.sfv_fd = ifd;
663	vec.sfv_flag = 0;
664	vec.sfv_off = offset;
665	vec.sfv_len = count;
666
667	res = sendfilev (ofd, &vec, 1, &sbytes);
668
669	if (res < 0 && sbytes)
670	res = sbytes;
671	}
672
673	# endif	636	#endif
674	#else
675	res = -1;
676	errno = ENOSYS;
677	#endif
678		637
679	if (res < 0	638	#define MMAP_MAGIC PERL_MAGIC_ext
680	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
681	#if __solaris
682	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
683	#endif
684	)
685	)
686	{
687	/* emulate sendfile. this is a major pain in the ass */
688	char buf[4096];
689	res = 0;
690		639
691	while (count)	640	static int
692	{	641	mmap_free (pTHX_ SV *sv, MAGIC *mg)
693	ssize_t cnt;
694
695	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
696
697	if (cnt <= 0)
698	{
699	if (cnt && !res) res = -1;
700	break;
701	}
702
703	cnt = write (ofd, buf, cnt);
704
705	if (cnt <= 0)
706	{
707	if (cnt && !res) res = -1;
708	break;
709	}
710
711	offset += cnt;
712	res += cnt;
713	count -= cnt;
714	}
715	}
716
717	return res;
718	}
719
720	/* read a full directory */
721	static int scandir_ (const char *path, void **namesp)
722	{	642	{
723	DIR *dirp = opendir (path);	643	int old_errno = errno;
724	union	644	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
725	{
726	struct dirent d;
727	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728	} u;
729	struct dirent *entp;
730	char *name, *names;
731	int memlen = 4096;
732	int memofs = 0;
733	int res = 0;
734	int errorno;
735
736	if (!dirp)
737	return -1;
738
739	names = malloc (memlen);
740
741	for (;;)
742	{
743	errno = 0, readdir_r (dirp, &u.d, &entp);
744
745	if (!entp)
746	break;
747
748	name = entp->d_name;
749
750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751	{
752	int len = strlen (name) + 1;
753
754	res++;
755
756	while (memofs + len > memlen)
757	{
758	memlen *= 2;
759	names = realloc (names, memlen);
760	if (!names)
761	break;
762	}
763
764	memcpy (names + memofs, name, len);
765	memofs += len;
766	}
767	}
768
769	errorno = errno;	645	errno = old_errno;
770	closedir (dirp);
771		646
772	if (errorno)	647	mg->mg_obj = 0; /* just in case */
773	{
774	free (names);
775	errno = errorno;
776	res = -1;
777	}
778		648
779	*namesp = (void *)names;	649	SvREADONLY_off (sv);
		650
		651	if (SvPVX (sv) != mg->mg_ptr)
		652	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		653
		654	SvCUR_set (sv, 0);
		655	SvPVX (sv) = 0;
		656	SvOK_off (sv);
		657
780	return res;	658	return 0;
781	}	659	}
		660
		661	static MGVTBL mmap_vtbl = {
		662	0, 0, 0, 0, mmap_free
		663	};
782		664
783	/*****************************************************************************/	665	/*****************************************************************************/
784		666
785	static void *aio_proc (void *thr_arg)	667	static SV *
		668	get_cb (SV *cb_sv)
786	{	669	{
787	aio_req req;	670	SvGETMAGIC (cb_sv);
788	int type;	671	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
789
790	do
791	{
792	pthread_mutex_lock (&reqlock);
793
794	for (;;)
795	{
796	req = reqs;
797
798	if (reqs)
799	{
800	reqs = reqs->next;
801	if (!reqs) reqe = 0;
802	}
803
804	if (req)
805	break;
806
807	pthread_cond_wait (&reqwait, &reqlock);
808	}
809
810	pthread_mutex_unlock (&reqlock);
811
812	errno = 0; /* strictly unnecessary */
813	type = req->type; /* remember type for QUIT check */
814
815	if (!(req->flags & FLAG_CANCELLED))
816	switch (type)
817	{
818	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
819	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
820
821	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
822	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
823
824	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
825	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
826	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
827
828	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
829	case REQ_CLOSE: req->result = close (req->fd); break;
830	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
831	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
832	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
833	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
834	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
835
836	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
837	case REQ_FSYNC: req->result = fsync (req->fd); break;
838	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
839
840	case REQ_SLEEP:
841	{
842	struct timeval tv;
843
844	tv.tv_sec = req->fd;
845	tv.tv_usec = req->fd2;
846
847	req->result = select (0, 0, 0, 0, &tv);
848	}
849
850	case REQ_GROUP:
851	case REQ_NOP:
852	case REQ_QUIT:
853	break;
854
855	default:
856	req->result = ENOSYS;
857	break;
858	}
859
860	req->errorno = errno;
861
862	pthread_mutex_lock (&reslock);
863
864	req->next = 0;
865
866	if (rese)
867	{
868	rese->next = req;
869	rese = req;
870	}
871	else
872	{
873	rese = ress = req;
874
875	/* write a dummy byte to the pipe so fh becomes ready */
876	write (respipe [1], &respipe, 1);
877	}
878
879	pthread_mutex_unlock (&reslock);
880	}
881	while (type != REQ_QUIT);
882
883	return 0;
884	}
885
886	/*****************************************************************************/
887
888	static void atfork_prepare (void)
889	{
890	pthread_mutex_lock (&reqlock);
891	pthread_mutex_lock (&reslock);
892	#if !HAVE_PREADWRITE
893	pthread_mutex_lock (&preadwritelock);
894	#endif
895	#if !HAVE_READDIR_R
896	pthread_mutex_lock (&readdirlock);
897	#endif
898	}
899
900	static void atfork_parent (void)
901	{
902	#if !HAVE_READDIR_R
903	pthread_mutex_unlock (&readdirlock);
904	#endif
905	#if !HAVE_PREADWRITE
906	pthread_mutex_unlock (&preadwritelock);
907	#endif
908	pthread_mutex_unlock (&reslock);
909	pthread_mutex_unlock (&reqlock);
910	}
911
912	static void atfork_child (void)
913	{
914	aio_req prv;
915
916	started = 0;
917
918	while (reqs)
919	{
920	prv = reqs;
921	reqs = prv->next;
922	req_free (prv);
923	}
924
925	reqs = reqe = 0;
926
927	while (ress)
928	{
929	prv = ress;
930	ress = prv->next;
931	req_free (prv);
932	}
933
934	ress = rese = 0;
935
936	close (respipe [0]);
937	close (respipe [1]);
938	create_pipe ();
939
940	atfork_parent ();
941	}	672	}
942		673
943	#define dREQ \	674	#define dREQ \
		675	SV *cb_cv; \
944	aio_req req; \	676	aio_req req; \
945	int req_pri = next_pri; \	677	int req_pri = next_pri; \
946	next_pri = DEFAULT_PRI + PRI_BIAS; \	678	next_pri = EIO_PRI_DEFAULT; \
947	\	679	\
948	if (SvOK (callback) && !SvROK (callback)) \	680	cb_cv = get_cb (callback); \
949	croak ("callback must be undef or of reference type"); \
950	\	681	\
951	Newz (0, req, 1, aio_cb); \	682	Newz (0, req, 1, eio_req); \
952	if (!req) \	683	if (!req) \
953	croak ("out of memory during aio_req allocation"); \	684	croak ("out of memory during eio_req allocation"); \
954	\	685	\
955	req->callback = newSVsv (callback); \	686	req->callback = SvREFCNT_inc (cb_cv); \
956	req->pri = req_pri	687	req->pri = req_pri
957		688
958	#define REQ_SEND \	689	#define REQ_SEND \
		690	PUTBACK; \
959	req_send (req); \	691	req_submit (req); \
		692	SPAGAIN; \
960	\	693	\
961	if (GIMME_V != G_VOID) \	694	if (GIMME_V != G_VOID) \
962	XPUSHs (req_sv (req, AIO_REQ_KLASS));	695	XPUSHs (req_sv (req, aio_req_stash));
963		696
964	MODULE = IO::AIO PACKAGE = IO::AIO	697	MODULE = IO::AIO PACKAGE = IO::AIO
965		698
966	PROTOTYPES: ENABLE	699	PROTOTYPES: ENABLE
967		700
968	BOOT:	701	BOOT:
969	{	702	{
		703	static const struct {
		704	const char *name;
		705	IV iv;
		706	} *civ, const_iv[] = {
		707	# define const_niv(name, value) { # name, (IV) value },
		708	# define const_iv(name) { # name, (IV) name },
		709	# define const_eio(name) { # name, (IV) EIO_ ## name },
		710	const_iv (EXDEV)
		711	const_iv (ENOSYS)
		712	const_iv (O_RDONLY)
		713	const_iv (O_WRONLY)
		714	const_iv (O_RDWR)
		715	const_iv (O_CREAT)
		716	const_iv (O_TRUNC)
		717	const_iv (O_EXCL)
		718	const_iv (O_APPEND)
		719	#ifndef _WIN32
		720	const_iv (S_IFIFO)
		721	#endif
		722	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		723	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		724	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		725	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		726	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		727	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		728
		729	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		730	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		731	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		732	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		733	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		734
		735	const_iv (ST_RDONLY)
		736	const_iv (ST_NOSUID)
		737	const_iv (ST_NODEV)
		738	const_iv (ST_NOEXEC)
		739	const_iv (ST_SYNCHRONOUS)
		740	const_iv (ST_MANDLOCK)
		741	const_iv (ST_WRITE)
		742	const_iv (ST_APPEND)
		743	const_iv (ST_IMMUTABLE)
		744	const_iv (ST_NOATIME)
		745	const_iv (ST_NODIRATIME)
		746	const_iv (ST_RELATIME)
		747
		748	const_iv (PROT_EXEC)
		749	const_iv (PROT_NONE)
		750	const_iv (PROT_READ)
		751	const_iv (PROT_WRITE)
		752
		753	/*const_iv (MAP_FIXED)*/
		754	const_iv (MAP_PRIVATE)
		755	const_iv (MAP_SHARED)
		756	const_iv (MAP_ANONYMOUS)
		757
		758	/* linuxish */
		759	const_iv (MAP_HUGETLB)
		760	const_iv (MAP_LOCKED)
		761	const_iv (MAP_NORESERVE)
		762	const_iv (MAP_POPULATE)
		763	const_iv (MAP_NONBLOCK)
		764
		765	const_iv (MCL_FUTURE)
		766	const_iv (MCL_CURRENT)
		767
		768	const_eio (MS_ASYNC)
		769	const_eio (MS_INVALIDATE)
		770	const_eio (MS_SYNC)
		771
		772	const_eio (MT_MODIFY)
		773
		774	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		775	const_eio (SYNC_FILE_RANGE_WRITE)
		776	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		777
		778	const_eio (READDIR_DENTS)
		779	const_eio (READDIR_DIRS_FIRST)
		780	const_eio (READDIR_STAT_ORDER)
		781	const_eio (READDIR_FOUND_UNKNOWN)
		782
		783	const_eio (DT_UNKNOWN)
		784	const_eio (DT_FIFO)
		785	const_eio (DT_CHR)
		786	const_eio (DT_DIR)
		787	const_eio (DT_BLK)
		788	const_eio (DT_REG)
		789	const_eio (DT_LNK)
		790	const_eio (DT_SOCK)
		791	const_eio (DT_WHT)
		792	};
		793
970	HV *stash = gv_stashpv ("IO::AIO", 1);	794	aio_stash = gv_stashpv ("IO::AIO" , 1);
971	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	795	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
972	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	796	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
973	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
974		797
		798	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		799	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		800
		801	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		802
975	create_pipe ();	803	create_respipe ();
976	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
977	}
978		804
		805	if (eio_init (want_poll, done_poll) < 0)
		806	croak ("IO::AIO: unable to initialise eio library");
		807
		808	/* atfork child called in fifo order, so before eio's handler */
		809	X_THREAD_ATFORK (0, 0, atfork_child);
		810	}
		811
979	void	812	void
980	min_parallel (nthreads)	813	max_poll_reqs (int nreqs)
981	int nthreads
982	PROTOTYPE: $	814	PROTOTYPE: $
		815	CODE:
		816	eio_set_max_poll_reqs (nreqs);
983		817
984	void	818	void
985	max_parallel (nthreads)	819	max_poll_time (double nseconds)
986	int nthreads
987	PROTOTYPE: $	820	PROTOTYPE: $
988
989	int
990	max_outstanding (nreqs)
991	int nreqs
992	PROTOTYPE: $
993	CODE:	821	CODE:
994	RETVAL = max_outstanding;	822	eio_set_max_poll_time (nseconds);
		823
		824	void
		825	min_parallel (int nthreads)
		826	PROTOTYPE: $
		827	CODE:
		828	eio_set_min_parallel (nthreads);
		829
		830	void
		831	max_parallel (int nthreads)
		832	PROTOTYPE: $
		833	CODE:
		834	eio_set_max_parallel (nthreads);
		835
		836	void
		837	max_idle (int nthreads)
		838	PROTOTYPE: $
		839	CODE:
		840	eio_set_max_idle (nthreads);
		841
		842	void
		843	max_outstanding (int maxreqs)
		844	PROTOTYPE: $
		845	CODE:
995	max_outstanding = nreqs;	846	max_outstanding = maxreqs;
996		847
997	void	848	void
998	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	849	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
999	SV * pathname
1000	int flags
1001	int mode
1002	SV * callback
1003	PROTOTYPE: $$$;$	850	PROTOTYPE: $$$;$
1004	PPCODE:	851	PPCODE:
1005	{	852	{
1006	dREQ;	853	dREQ;
1007		854
1008	req->type = REQ_OPEN;	855	req->type = EIO_OPEN;
1009	req->data = newSVsv (pathname);	856	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	857	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011	req->fd = flags;	858	req->int1 = flags;
1012	req->mode = mode;	859	req->int2 = mode;
1013		860
1014	REQ_SEND;	861	REQ_SEND;
1015	}	862	}
1016		863
1017	void	864	void
1018	aio_close (fh,callback=&PL_sv_undef)	865	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1019	SV * fh
1020	SV * callback
1021	PROTOTYPE: $;$	866	PROTOTYPE: $;$
1022	ALIAS:	867	ALIAS:
1023	aio_close = REQ_CLOSE
1024	aio_fsync = REQ_FSYNC	868	aio_fsync = EIO_FSYNC
1025	aio_fdatasync = REQ_FDATASYNC	869	aio_fdatasync = EIO_FDATASYNC
1026	PPCODE:	870	PPCODE:
1027	{	871	{
		872	int fd = s_fileno_croak (fh, 0);
1028	dREQ;	873	dREQ;
1029		874
1030	req->type = ix;	875	req->type = ix;
1031	req->fh = newSVsv (fh);	876	req->sv1 = newSVsv (fh);
1032	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	877	req->int1 = fd;
1033		878
1034	REQ_SEND (req);	879	REQ_SEND (req);
1035	}	880	}
1036		881
1037	void	882	void
		883	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		884	PROTOTYPE: $$$$;$
		885	PPCODE:
		886	{
		887	int fd = s_fileno_croak (fh, 0);
		888	dREQ;
		889
		890	req->type = EIO_SYNC_FILE_RANGE;
		891	req->sv1 = newSVsv (fh);
		892	req->int1 = fd;
		893	req->offs = offset;
		894	req->size = nbytes;
		895	req->int2 = flags;
		896
		897	REQ_SEND (req);
		898	}
		899
		900	void
		901	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		902	PROTOTYPE: $;$
		903	PPCODE:
		904	{
		905	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		906	int fd = s_fileno_croak (fh, 0);
		907	dREQ;
		908
		909	if (close_pipe < 0)
		910	{
		911	int pipefd [2];
		912
		913	if (pipe (pipefd) < 0
		914	|| close (pipefd [1]) < 0
		915	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		916	abort (); /*D*/
		917
		918	close_pipe = pipefd [0];
		919	}
		920
		921	req->type = EIO_DUP2;
		922	req->int1 = close_pipe;
		923	req->sv2 = newSVsv (fh);
		924	req->int2 = fd;
		925
		926	REQ_SEND (req);
		927	}
		928
		929	void
1038	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	930	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1039	SV * fh
1040	UV offset
1041	UV length
1042	SV * data
1043	UV dataoffset
1044	SV * callback
1045	ALIAS:	931	ALIAS:
1046	aio_read = REQ_READ	932	aio_read = EIO_READ
1047	aio_write = REQ_WRITE	933	aio_write = EIO_WRITE
1048	PROTOTYPE: $$$$$;$	934	PROTOTYPE: $$$$$;$
1049	PPCODE:	935	PPCODE:
1050	{	936	{
1051	aio_req req;
1052	STRLEN svlen;	937	STRLEN svlen;
		938	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1053	char *svptr = SvPVbyte (data, svlen);	939	char *svptr = SvPVbyte (data, svlen);
1054		940	UV len = SvUV (length);
1055	SvUPGRADE (data, SVt_PV);
1056	SvPOK_on (data);
1057		941
1058	if (dataoffset < 0)	942	if (dataoffset < 0)
1059	dataoffset += svlen;	943	dataoffset += svlen;
1060		944
1061	if (dataoffset < 0 || dataoffset > svlen)	945	if (dataoffset < 0 || dataoffset > svlen)
1062	croak ("data offset outside of string");	946	croak ("dataoffset outside of data scalar");
1063		947
1064	if (ix == REQ_WRITE)	948	if (ix == EIO_WRITE)
1065	{	949	{
1066	/* write: check length and adjust. */	950	/* write: check length and adjust. */
1067	if (length < 0 || length + dataoffset > svlen)	951	if (!SvOK (length) || len + dataoffset > svlen)
1068	length = svlen - dataoffset;	952	len = svlen - dataoffset;
1069	}	953	}
1070	else	954	else
1071	{	955	{
1072	/* read: grow scalar as necessary */	956	/* read: check type and grow scalar as necessary */
		957	SvUPGRADE (data, SVt_PV);
1073	svptr = SvGROW (data, length + dataoffset);	958	svptr = SvGROW (data, len + dataoffset + 1);
1074	}	959	}
1075
1076	if (length < 0)
1077	croak ("length must not be negative");
1078		960
1079	{	961	{
1080	dREQ;	962	dREQ;
1081		963
1082	req->type = ix;	964	req->type = ix;
1083	req->fh = newSVsv (fh);	965	req->sv1 = newSVsv (fh);
1084	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	966	req->int1 = fd;
1085	: IoOFP (sv_2io (fh)));	967	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1086	req->offset = offset;	968	req->size = len;
1087	req->length = length;
1088	req->data = SvREFCNT_inc (data);	969	req->sv2 = SvREFCNT_inc (data);
1089	req->dataptr = (char *)svptr + dataoffset;	970	req->ptr2 = (char *)svptr + dataoffset;
		971	req->stroffset = dataoffset;
1090		972
1091	if (!SvREADONLY (data))	973	if (!SvREADONLY (data))
1092	{	974	{
1093	SvREADONLY_on (data);	975	SvREADONLY_on (data);
1094	req->data2ptr = (void *)data;	976	req->flags |= FLAG_SV2_RO_OFF;
1095	}	977	}
1096		978
1097	REQ_SEND;	979	REQ_SEND;
1098	}	980	}
1099	}	981	}
1100		982
1101	void	983	void
		984	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		985	PROTOTYPE: $$;$
		986	PPCODE:
		987	{
		988	SV *data;
		989	dREQ;
		990
		991	req->type = EIO_READLINK;
		992	req->sv1 = newSVsv (path);
		993	req->ptr1 = SvPVbyte_nolen (req->sv1);
		994
		995	REQ_SEND;
		996	}
		997
		998	void
1102	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	999	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1103	SV * out_fh
1104	SV * in_fh
1105	UV in_offset
1106	UV length
1107	SV * callback
1108	PROTOTYPE: $$$$;$	1000	PROTOTYPE: $$$$;$
1109	PPCODE:	1001	PPCODE:
1110	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1111	dREQ;	1005	dREQ;
1112		1006
1113	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1114	req->fh = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1116	req->fh2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1117	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1118	req->offset = in_offset;	1012	req->offs = in_offset;
1119	req->length = length;	1013	req->size = length;
1120		1014
1121	REQ_SEND;	1015	REQ_SEND;
1122	}	1016	}
1123		1017
1124	void	1018	void
1125	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1126	SV * fh
1127	UV offset
1128	IV length
1129	SV * callback
1130	PROTOTYPE: $$$;$	1020	PROTOTYPE: $$$;$
1131	PPCODE:	1021	PPCODE:
1132	{	1022	{
		1023	int fd = s_fileno_croak (fh, 0);
1133	dREQ;	1024	dREQ;
1134		1025
1135	req->type = REQ_READAHEAD;	1026	req->type = EIO_READAHEAD;
1136	req->fh = newSVsv (fh);	1027	req->sv1 = newSVsv (fh);
1137	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1028	req->int1 = fd;
1138	req->offset = offset;	1029	req->offs = offset;
1139	req->length = length;	1030	req->size = length;
1140		1031
1141	REQ_SEND;	1032	REQ_SEND;
1142	}	1033	}
1143		1034
1144	void	1035	void
1145	aio_stat (fh_or_path,callback=&PL_sv_undef)	1036	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1146	SV * fh_or_path
1147	SV * callback
1148	ALIAS:	1037	ALIAS:
1149	aio_stat = REQ_STAT	1038	aio_stat = EIO_STAT
1150	aio_lstat = REQ_LSTAT	1039	aio_lstat = EIO_LSTAT
		1040	aio_statvfs = EIO_STATVFS
1151	PPCODE:	1041	PPCODE:
1152	{	1042	{
1153	dREQ;	1043	dREQ;
1154		1044
1155	New (0, req->statdata, 1, Stat_t);	1045	req->sv1 = newSVsv (fh_or_path);
1156	if (!req->statdata)
1157	{
1158	req_free (req);
1159	croak ("out of memory during aio_req->statdata allocation");
1160	}
1161		1046
1162	if (SvPOK (fh_or_path))	1047	if (SvPOK (req->sv1))
1163	{	1048	{
1164	req->type = ix;	1049	req->type = ix;
1165	req->data = newSVsv (fh_or_path);
1166	req->dataptr = SvPVbyte_nolen (req->data);	1050	req->ptr1 = SvPVbyte_nolen (req->sv1);
1167	}	1051	}
1168	else	1052	else
1169	{	1053	{
1170	req->type = REQ_FSTAT;	1054	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1171	req->fh = newSVsv (fh_or_path);
1172	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1055	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173	}	1056	}
1174		1057
1175	REQ_SEND;	1058	REQ_SEND;
1176	}	1059	}
1177		1060
1178	void	1061	void
		1062	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1063	PPCODE:
		1064	{
		1065	dREQ;
		1066
		1067	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1068	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1069	req->sv1 = newSVsv (fh_or_path);
		1070
		1071	if (SvPOK (req->sv1))
		1072	{
		1073	req->type = EIO_UTIME;
		1074	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1075	}
		1076	else
		1077	{
		1078	req->type = EIO_FUTIME;
		1079	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1080	}
		1081
		1082	REQ_SEND;
		1083	}
		1084
		1085	void
		1086	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1087	PPCODE:
		1088	{
		1089	dREQ;
		1090
		1091	req->sv1 = newSVsv (fh_or_path);
		1092	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1093
		1094	if (SvPOK (req->sv1))
		1095	{
		1096	req->type = EIO_TRUNCATE;
		1097	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1098	}
		1099	else
		1100	{
		1101	req->type = EIO_FTRUNCATE;
		1102	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1103	}
		1104
		1105	REQ_SEND;
		1106	}
		1107
		1108	void
		1109	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1110	ALIAS:
		1111	aio_chmod = EIO_CHMOD
		1112	aio_mkdir = EIO_MKDIR
		1113	PPCODE:
		1114	{
		1115	dREQ;
		1116
		1117	req->int2 = mode;
		1118	req->sv1 = newSVsv (fh_or_path);
		1119
		1120	if (SvPOK (req->sv1))
		1121	{
		1122	req->type = ix;
		1123	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1124	}
		1125	else
		1126	{
		1127	req->type = EIO_FCHMOD;
		1128	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1129	}
		1130
		1131	REQ_SEND;
		1132	}
		1133
		1134	void
		1135	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1136	PPCODE:
		1137	{
		1138	dREQ;
		1139
		1140	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1141	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1142	req->sv1 = newSVsv (fh_or_path);
		1143
		1144	if (SvPOK (req->sv1))
		1145	{
		1146	req->type = EIO_CHOWN;
		1147	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1148	}
		1149	else
		1150	{
		1151	req->type = EIO_FCHOWN;
		1152	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1153	}
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	dREQ;
		1163
		1164	req->type = EIO_READDIR;
		1165	req->sv1 = newSVsv (pathname);
		1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1167	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1168
		1169	if (flags & EIO_READDIR_DENTS)
		1170	req->int1 |= EIO_READDIR_CUSTOM2;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
1179	aio_unlink (pathname,callback=&PL_sv_undef)	1176	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1180	SV * pathname
1181	SV * callback
1182	ALIAS:	1177	ALIAS:
1183	aio_unlink = REQ_UNLINK	1178	aio_unlink = EIO_UNLINK
1184	aio_rmdir = REQ_RMDIR	1179	aio_rmdir = EIO_RMDIR
1185	aio_readdir = REQ_READDIR	1180	aio_readdir = EIO_READDIR
1186	PPCODE:	1181	PPCODE:
1187	{	1182	{
1188	dREQ;	1183	dREQ;
1189		1184
1190	req->type = ix;	1185	req->type = ix;
1191	req->data = newSVsv (pathname);	1186	req->sv1 = newSVsv (pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1187	req->ptr1 = SvPVbyte_nolen (req->sv1);
1193		1188
1194	REQ_SEND;	1189	REQ_SEND;
1195	}	1190	}
1196		1191
1197	void	1192	void
1198	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1193	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1199	SV * oldpath
1200	SV * newpath
1201	SV * callback
1202	ALIAS:	1194	ALIAS:
1203	aio_link = REQ_LINK	1195	aio_link = EIO_LINK
1204	aio_symlink = REQ_SYMLINK	1196	aio_symlink = EIO_SYMLINK
1205	aio_rename = REQ_RENAME	1197	aio_rename = EIO_RENAME
1206	PPCODE:	1198	PPCODE:
1207	{	1199	{
1208	dREQ;	1200	dREQ;
1209		1201
1210	req->type = ix;	1202	req->type = ix;
1211	req->fh = newSVsv (oldpath);	1203	req->sv1 = newSVsv (oldpath);
1212	req->data2ptr = SvPVbyte_nolen (req->fh);	1204	req->ptr1 = SvPVbyte_nolen (req->sv1);
1213	req->data = newSVsv (newpath);	1205	req->sv2 = newSVsv (newpath);
1214	req->dataptr = SvPVbyte_nolen (req->data);	1206	req->ptr2 = SvPVbyte_nolen (req->sv2);
1215		1207
1216	REQ_SEND;	1208	REQ_SEND;
1217	}	1209	}
1218		1210
1219	void	1211	void
1220	aio_sleep (delay,callback=&PL_sv_undef)	1212	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1221	double delay
1222	SV * callback
1223	PPCODE:	1213	PPCODE:
1224	{	1214	{
1225	dREQ;	1215	dREQ;
1226		1216
1227	req->type = REQ_SLEEP;	1217	req->type = EIO_MKNOD;
1228	req->fd = delay < 0. ? 0 : delay;	1218	req->sv1 = newSVsv (pathname);
1229	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
1230		1220	req->int2 = (mode_t)mode;
		1221	req->offs = dev;
		1222
1231	REQ_SEND;	1223	REQ_SEND;
1232	}	1224	}
1233		1225
1234	void	1226	void
		1227	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1228	ALIAS:
		1229	aio_mtouch = EIO_MTOUCH
		1230	aio_msync = EIO_MSYNC
		1231	PROTOTYPE: $$$$;$
		1232	PPCODE:
		1233	{
		1234	STRLEN svlen;
		1235	UV len = SvUV (length);
		1236	char *svptr = SvPVbyte (data, svlen);
		1237
		1238	if (offset < 0)
		1239	offset += svlen;
		1240
		1241	if (offset < 0 || offset > svlen)
		1242	croak ("offset outside of scalar");
		1243
		1244	if (!SvOK (length) || len + offset > svlen)
		1245	len = svlen - offset;
		1246
		1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req->size = len;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->int1 = flags;
		1255
		1256	REQ_SEND;
		1257	}
		1258	}
		1259
		1260	void
		1261	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1262	PPCODE:
		1263	{
		1264	dREQ;
		1265
		1266	req->type = EIO_BUSY;
		1267	req->nv1 = delay < 0. ? 0. : delay;
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
1235	aio_group (callback=&PL_sv_undef)	1273	aio_group (SV *callback=&PL_sv_undef)
1236	SV * callback
1237	PROTOTYPE: ;$	1274	PROTOTYPE: ;$
1238	PPCODE:	1275	PPCODE:
1239	{	1276	{
1240	dREQ;	1277	dREQ;
1241		1278
1242	req->type = REQ_GROUP;	1279	req->type = EIO_GROUP;
		1280
1243	req_send (req);	1281	req_submit (req);
1244
1245	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1282	XPUSHs (req_sv (req, aio_grp_stash));
1246	}	1283	}
1247		1284
1248	void	1285	void
1249	aio_nop (callback=&PL_sv_undef)	1286	aio_nop (SV *callback=&PL_sv_undef)
1250	SV * callback	1287	ALIAS:
		1288	aio_nop = EIO_NOP
		1289	aio_sync = EIO_SYNC
1251	PPCODE:	1290	PPCODE:
1252	{	1291	{
1253	dREQ;	1292	dREQ;
1254		1293
1255	req->type = REQ_NOP;	1294	req->type = ix;
1256		1295
1257	REQ_SEND;	1296	REQ_SEND;
1258	}	1297	}
1259		1298
1260	#if 0	1299	int
1261		1300	aioreq_pri (int pri = 0)
1262	void	1301	PROTOTYPE: ;$
1263	aio_pri (int pri = DEFAULT_PRI)
1264	CODE:	1302	CODE:
		1303	RETVAL = next_pri;
		1304	if (items > 0)
		1305	{
1265	if (pri > PRI_MIN) pri = PRI_MIN;	1306	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1266	if (pri < PRI_MAX) pri = PRI_MAX;	1307	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1267	next_pri = pri + PRI_BIAS;	1308	next_pri = pri;
		1309	}
		1310	OUTPUT:
		1311	RETVAL
1268		1312
1269	#endif	1313	void
		1314	aioreq_nice (int nice = 0)
		1315	CODE:
		1316	nice = next_pri - nice;
		1317	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1318	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1319	next_pri = nice;
1270		1320
1271	void	1321	void
1272	flush ()	1322	flush ()
1273	PROTOTYPE:	1323	PROTOTYPE:
1274	CODE:	1324	CODE:
1275	while (nreqs)	1325	while (eio_nreqs ())
1276	{	1326	{
1277	poll_wait ();	1327	poll_wait ();
1278	poll_cb ();	1328	poll_cb ();
1279	}	1329	}
1280		1330
1281	void	1331	int
1282	poll()	1332	poll()
1283	PROTOTYPE:	1333	PROTOTYPE:
1284	CODE:	1334	CODE:
1285	if (nreqs)
1286	{
1287	poll_wait ();	1335	poll_wait ();
1288	poll_cb ();	1336	RETVAL = poll_cb ();
1289	}	1337	OUTPUT:
		1338	RETVAL
1290		1339
1291	int	1340	int
1292	poll_fileno()	1341	poll_fileno()
1293	PROTOTYPE:	1342	PROTOTYPE:
1294	CODE:	1343	CODE:
1295	RETVAL = respipe [0];	1344	RETVAL = s_epipe_fd (&respipe);
1296	OUTPUT:	1345	OUTPUT:
1297	RETVAL	1346	RETVAL
1298		1347
1299	int	1348	int
1300	poll_cb(...)	1349	poll_cb(...)
…		…
1306		1355
1307	void	1356	void
1308	poll_wait()	1357	poll_wait()
1309	PROTOTYPE:	1358	PROTOTYPE:
1310	CODE:	1359	CODE:
1311	if (nreqs)
1312	poll_wait ();	1360	poll_wait ();
1313		1361
1314	int	1362	int
1315	nreqs()	1363	nreqs()
1316	PROTOTYPE:	1364	PROTOTYPE:
1317	CODE:	1365	CODE:
1318	RETVAL = nreqs;	1366	RETVAL = eio_nreqs ();
1319	OUTPUT:	1367	OUTPUT:
1320	RETVAL	1368	RETVAL
1321		1369
		1370	int
		1371	nready()
		1372	PROTOTYPE:
		1373	CODE:
		1374	RETVAL = eio_nready ();
		1375	OUTPUT:
		1376	RETVAL
		1377
		1378	int
		1379	npending()
		1380	PROTOTYPE:
		1381	CODE:
		1382	RETVAL = eio_npending ();
		1383	OUTPUT:
		1384	RETVAL
		1385
		1386	int
		1387	nthreads()
		1388	PROTOTYPE:
		1389	CODE:
		1390	RETVAL = eio_nthreads ();
		1391	OUTPUT:
		1392	RETVAL
		1393
		1394	int
		1395	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1396	PROTOTYPE: $$$$
		1397	CODE:
		1398	RETVAL = posix_fadvise (fh, offset, length, advice);
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	ssize_t
		1403	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1404	PROTOTYPE: $$$$
		1405	CODE:
		1406	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1407	OUTPUT:
		1408	RETVAL
		1409
		1410	void
		1411	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1412	PROTOTYPE: $$$$$;$
		1413	PPCODE:
		1414	sv_unmagic (scalar, MMAP_MAGIC);
		1415	{
		1416	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1417	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1418	if (addr == (void *)-1)
		1419	XSRETURN_NO;
		1420
		1421	sv_force_normal (scalar);
		1422
		1423	/* we store the length in mg_obj, as namlen is I32 :/ */
		1424	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1425	->mg_obj = (SV *)length;
		1426
		1427	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1428
		1429	if (!(prot & PROT_WRITE))
		1430	SvREADONLY_on (scalar);
		1431
		1432	if (SvLEN (scalar))
		1433	Safefree (SvPVX (scalar));
		1434
		1435	SvPVX (scalar) = (char *)addr;
		1436	SvCUR_set (scalar, length);
		1437	SvLEN_set (scalar, 0);
		1438	SvPOK_only (scalar);
		1439
		1440	XSRETURN_YES;
		1441	}
		1442
		1443	void
		1444	munmap (SV *scalar)
		1445	PROTOTYPE: $
		1446	CODE:
		1447	sv_unmagic (scalar, MMAP_MAGIC);
		1448
		1449	int
		1450	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1451	PROTOTYPE: $$$$
		1452	CODE:
		1453	{
		1454	char *addr = SvPV_nolen (scalar) + offset;
		1455
		1456	if (!SvOK (ST (2)))
		1457	length = SvCUR (scalar) - offset;
		1458
		1459	if (addr >= SvEND (scalar) || length <= 0)
		1460	XSRETURN_EMPTY;
		1461
		1462	RETVAL = posix_madvise (addr, length, advice);
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
1322	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
1323		1503
1324	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325		1505
1326	void	1506	void
1327	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1328	PROTOTYPE:
1329	CODE:	1508	CODE:
1330	req_cancel (req);	1509	eio_cancel (req);
1331		1510
1332	void	1511	void
1333	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1334	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
1335	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
1336	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1337		1526
1338	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1339		1528
1340	void	1529	void
1341	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1342	PPCODE:	1531	PPCODE:
1343	{	1532	{
1344	int i;	1533	int i;
1345	aio_req req;
1346		1534
1347	if (grp->fd == 2)	1535	if (grp->int1 == 2)
1348	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349		1537
1350	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
1351	{	1539	{
		1540	aio_req req;
		1541
1352	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
1353	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1354		1544
1355	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
1356		1546
1357	if (req)	1547	if (req)
1358	{	1548	eio_grp_add (grp, req);
1359	++grp->length;
1360	req->grp = grp;
1361
1362	req->grp_prev = 0;
1363	req->grp_next = grp->grp_first;
1364
1365	if (grp->grp_first)
1366	grp->grp_first->grp_prev = req;
1367
1368	grp->grp_first = req;
1369	}
1370	}	1549	}
1371	}	1550	}
		1551
		1552	void
		1553	cancel_subs (aio_req_ornot req)
		1554	CODE:
		1555	req_cancel_subs (req);
1372		1556
1373	void	1557	void
1374	result (aio_req grp, ...)	1558	result (aio_req grp, ...)
1375	CODE:	1559	CODE:
1376	{	1560	{
1377	int i;	1561	int i;
		1562	AV *av;
		1563
		1564	grp->errorno = errno;
		1565
1378	AV *av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
1379		1568
1380	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
1381	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
1382		1571
1383	SvREFCNT_dec (grp->data);	1572	SvREFCNT_dec (grp->sv1);
1384	grp->data = (SV *)av;	1573	grp->sv1 = (SV *)av;
1385	}	1574	}
1386		1575
1387	void	1576	void
		1577	errno (aio_req grp, int errorno = errno)
		1578	CODE:
		1579	grp->errorno = errorno;
		1580
		1581	void
1388	feed_limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
1389	CODE:	1583	CODE:
1390	grp->fd2 = limit;	1584	eio_grp_limit (grp, limit);
1391	aio_grp_feed (grp);
1392		1585
1393	void	1586	void
1394	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
1395	CODE:	1588	CODE:
1396	{	1589	{
1397	SvREFCNT_dec (grp->fh2);	1590	SvREFCNT_dec (grp->sv2);
1398	grp->fh2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
1399		1593
1400	if (grp->fd2 <= 0)	1594	if (grp->int2 <= 0)
1401	grp->fd2 = 2;	1595	grp->int2 = 2;
1402		1596
1403	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
1404	}	1598	}
1405		1599

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