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

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