ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.57 by root, Mon Oct 23 18:38:15 2006 UTC vs.
Revision 1.174 by root, Mon Nov 1 22:03:43 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 PROT_NONE
		171	# define PROT_NONE 0
		172	#endif
		173	#ifndef PROT_READ
		174	# define PROT_READ 0
		175	#endif
		176	#ifndef PROT_WRITE
		177	# define PROT_READ 0
		178	#endif
		179	#ifndef PROT_EXEC
		180	# define PROT_EXEC 0
		181	#endif
		182
		183	#ifndef ST_NODEV
		184	# define ST_NODEV 0
		185	#endif
		186	#ifndef ST_NOEXEC
		187	# define ST_NOEXEC 0
		188	#endif
		189	#ifndef ST_SYNCHRONOUS
		190	# define ST_SYNCHRONOUS 0
		191	#endif
		192	#ifndef ST_MANDLOCK
		193	# define ST_MANDLOCK 0
		194	#endif
		195	#ifndef ST_WRITE
		196	# define ST_WRITE 0
		197	#endif
		198	#ifndef ST_APPEND
		199	# define ST_APPEND 0
		200	#endif
		201	#ifndef ST_IMMUTABLE
		202	# define ST_IMMUTABLE 0
		203	#endif
		204	#ifndef ST_NOATIME
		205	# define ST_NOATIME 0
		206	#endif
		207	#ifndef ST_NODIRATIME
		208	# define ST_NODIRATIME 0
		209	#endif
		210	#ifndef ST_RELATIME
		211	# define ST_RELATIME 0
		212	#endif
		213
		214	#ifndef MAP_ANONYMOUS
		215	# ifdef MAP_ANON
		216	# define MAP_ANONYMOUS MAP_ANON
34	# else	217	# else
35	# error sendfile support requested but not available	218	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	219	# endif
37	#endif	220	#endif
38		221	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	222	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#endif	223	#endif
43		224	#ifndef MAP_LOCKED
44	#if __ia64	225	# define MAP_LOCKED 0
45	# define STACKSIZE 65536
46	#else
47	# define STACKSIZE 8192
48	#endif	226	#endif
		227	#ifndef MAP_NORESERVE
		228	# define MAP_NORESERVE 0
		229	#endif
		230	#ifndef MAP_POPULATE
		231	# define MAP_POPULATE 0
		232	#endif
		233	#ifndef MAP_NONBLOCK
		234	# define MAP_NONBLOCK 0
		235	#endif
		236
		237	#ifndef PAGESIZE
		238	# define PAGESIZE sysconf (_SC_PAGESIZE)
		239	#endif
		240
		241	static int req_invoke (eio_req *req);
		242	#define EIO_FINISH(req) req_invoke (req)
		243	static void req_destroy (eio_req *grp);
		244	#define EIO_DESTROY(req) req_destroy (req)
49		245
50	enum {	246	enum {
51	REQ_QUIT,	247	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	};	248	};
63		249
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		251
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;	252	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	253	typedef eio_req *aio_req_ornot;
93		254
94	static int started, wanted;	255	static SV *on_next_submit;
95	static volatile int nreqs;	256	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	257	static int max_outstanding;
97	static int respipe [2];
98		258
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	259	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		260
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	261	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);	262	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	263
		264	static void want_poll (void)
		265	{
		266	/* write a dummy byte to the pipe so fh becomes ready */
		267	s_epipe_signal (&respipe);
		268	}
		269
		270	static void done_poll (void)
		271	{
		272	/* read any signals sent by the worker threads */
		273	s_epipe_drain (&respipe);
		274	}
108		275
109	/* must be called at most once */	276	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	277	static SV *req_sv (aio_req req, HV *stash)
111	{	278	{
112	if (!req->self)	279	if (!req->self)
113	{	280	{
114	req->self = (SV *)newHV ();	281	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	282	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	283	}
117		284
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	285	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	286	}
120		287
121	static aio_req SvAIO_REQ (SV *sv)	288	static aio_req SvAIO_REQ (SV *sv)
122	{	289	{
123	MAGIC *mg;	290	MAGIC *mg;
124		291
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	292	if (!SvROK (sv)
		293	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		294	&& SvSTASH (SvRV (sv)) != aio_req_stash
		295	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	296	croak ("object of class IO::AIO::REQ expected");
127		297
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	298	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		299
130	return mg ? (aio_req)mg->mg_ptr : 0;	300	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	301	}
132		302
133	static void aio_grp_feed (aio_req grp)	303	static void aio_grp_feed (aio_req grp)
134	{	304	{
135	while (grp->length < grp->fd2 && !grp->cancelled)	305	if (grp->sv2 && SvOK (grp->sv2))
136	{	306	{
137	int old_len = grp->length;	307	dSP;
138		308
139	if (grp->fh2 && SvOK (grp->fh2))	309	ENTER;
		310	SAVETMPS;
		311	PUSHMARK (SP);
		312	XPUSHs (req_sv (grp, aio_grp_stash));
		313	PUTBACK;
		314	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		315	SPAGAIN;
		316	FREETMPS;
		317	LEAVE;
		318	}
		319	}
		320
		321	static void req_submit (eio_req *req)
		322	{
		323	eio_submit (req);
		324
		325	if (expect_false (on_next_submit))
		326	{
		327	dSP;
		328	SV *cb = sv_2mortal (on_next_submit);
		329
		330	on_next_submit = 0;
		331
		332	PUSHMARK (SP);
		333	PUTBACK;
		334	call_sv (cb, G_DISCARD | G_EVAL);
		335	}
		336	}
		337
		338	static int req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
140	{	356	{
141	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
142		358	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	}	359	}
153		360	else
154	/* stop if no progress has been made */
155	if (old_len == grp->length)
156	{	361	{
157	SvREFCNT_dec (grp->fh2);	362	sv_result = newSViv (req->result);
158	grp->fh2 = 0;	363	SvREADONLY_on (sv_result);
159	break;
160	}	364	}
		365
		366	switch (req->type)
		367	{
		368	case EIO_READDIR:
		369	{
		370	SV *rv = &PL_sv_undef;
		371
		372	if (req->result >= 0)
		373	{
		374	int i;
		375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		377	AV *av = newAV ();
		378
		379	av_extend (av, req->result - 1);
		380
		381	for (i = 0; i < req->result; ++i)
		382	{
		383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
		407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
		415	names += SvCUR (name) + 1;
		416	}
		417	}
		418
		419	rv = sv_2mortal (newRV_noinc ((SV *)av));
		420	}
		421
		422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		426	}
		427	break;
		428
		429	case EIO_OPEN:
		430	{
		431	/* convert fd to fh */
		432	SV *fh = &PL_sv_undef;
		433
		434	if (req->result >= 0)
		435	{
		436	GV *gv = (GV *)sv_newmortal ();
		437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		438	char sym [64];
		439	int symlen;
		440
		441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		442	gv_init (gv, aio_stash, sym, symlen, 0);
		443
		444	symlen = snprintf (
		445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
		456	PUSHs (fh);
		457	}
		458	break;
		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
		490	case EIO_GROUP:
		491	req->int1 = 2; /* mark group as finished */
		492
		493	if (req->sv1)
		494	{
		495	int i;
		496	AV *av = (AV *)req->sv1;
		497
		498	EXTEND (SP, AvFILL (av) + 1);
		499	for (i = 0; i <= AvFILL (av); ++i)
		500	PUSHs (*av_fetch (av, i, 0));
		501	}
		502	break;
		503
		504	case EIO_NOP:
		505	case EIO_BUSY:
		506	break;
		507
		508	case EIO_READLINK:
		509	if (req->result > 0)
		510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		511	break;
		512
		513	case EIO_STAT:
		514	case EIO_LSTAT:
		515	case EIO_FSTAT:
		516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		517	PL_laststatval = req->result;
		518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		519	PUSHs (sv_result);
		520	break;
		521
		522	case EIO_READ:
		523	{
		524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		525	*SvEND (req->sv2) = 0;
		526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
		530	break;
		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
		537	default:
		538	PUSHs (sv_result);
		539	break;
		540	}
		541
		542	errno = req->errorno;
		543
		544	PUTBACK;
		545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		546	SPAGAIN;
		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
		552
		553	FREETMPS;
		554	LEAVE;
		555
		556	PUTBACK;
161	}	557	}
162	}
163		558
164	static void aio_grp_dec (aio_req grp)	559	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	}	560	}
178		561
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)	562	static void req_destroy (aio_req req)
291	{	563	{
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)	564	if (req->self)
307	{	565	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
310	}	568	}
311		569
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	570	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	571	SvREFCNT_dec (req->sv2);
315	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320		573
321	Safefree (req);	574	Safefree (req);
322	}	575	}
323		576
324	static void req_cancel (aio_req req)	577	static void req_cancel_subs (aio_req grp)
325	{	578	{
326	req->cancelled = 1;	579	aio_req sub;
327		580
328	if (req->type == REQ_GROUP)	581	if (grp->type != EIO_GROUP)
		582	return;
		583
		584	SvREFCNT_dec (grp->sv2);
		585	grp->sv2 = 0;
		586
		587	eio_grp_cancel (grp);
		588	}
		589
		590	static void
		591	create_respipe (void)
		592	{
		593	if (s_epipe_renew (&respipe))
		594	croak ("IO::AIO: unable to initialize result pipe");
		595	}
		596
		597	static void poll_wait (void)
		598	{
		599	while (eio_nreqs ())
329	{	600	{
330	aio_req sub;	601	int size;
331		602
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	603	X_LOCK (reslock);
333	req_cancel (sub);	604	size = res_queue.size;
		605	X_UNLOCK (reslock);
		606
		607	if (size)
		608	return;
		609
		610	etp_maybe_start_thread ();
		611
		612	s_epipe_wait (&respipe);
334	}	613	}
335	}	614	}
336		615
337	static int poll_cb ()	616	static int poll_cb (void)
338	{	617	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	618	for (;;)
345	{	619	{
346	pthread_mutex_lock (&reslock);	620	int res = eio_poll ();
347	req = ress;
348		621
349	if (req)	622	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;	623	croak (0);
368		624
369	--nreqs;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
		626	return res;
370		627
371	if (req->type == REQ_QUIT)	628	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	}	629	}
400
401	return count;
402	}	630	}
403		631
404	static void *aio_proc(void *arg);
405
406	static void start_thread (void)	632	static void atfork_child (void)
407	{	633	{
408	sigset_t fullsigset, oldsigset;	634	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	}	635	}
505		636
506	/*****************************************************************************/	637	/*****************************************************************************/
507	/* work around various missing functions */
508		638
509	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
510	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
511	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
512		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
513	/*	643	# define PROT_NONE 0
514	* make our pread/pwrite safe against themselves, but not against	644	# define PROT_WRITE 0
515	* normal read/write by using a mutex. slows down execution a lot,	645	# define MAP_PRIVATE 0
516	* but that's your problem, not mine.	646	# define MAP_SHARED 0
517	*/	647	# define MAP_FIXED 0
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	648	#endif
651	#else
652	res = -1;
653	errno = ENOSYS;
654	#endif
655		649
656	if (res < 0	650	#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		651
668	while (count)	652	static int
669	{	653	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	{	654	{
700	DIR *dirp = opendir (path);	655	int old_errno = errno;
701	union	656	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;	657	errno = old_errno;
747	closedir (dirp);
748		658
749	if (errorno)	659	mg->mg_obj = 0; /* just in case */
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755		660
756	*namesp = (void *)names;	661	SvREADONLY_off (sv);
		662
		663	if (SvPVX (sv) != mg->mg_ptr)
		664	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		665
		666	SvCUR_set (sv, 0);
		667	SvPVX (sv) = 0;
		668	SvOK_off (sv);
		669
757	return res;	670	return 0;
758	}	671	}
		672
		673	static MGVTBL mmap_vtbl = {
		674	0, 0, 0, 0, mmap_free
		675	};
759		676
760	/*****************************************************************************/	677	/*****************************************************************************/
761		678
762	static void *aio_proc (void *thr_arg)	679	static SV *
		680	get_cb (SV *cb_sv)
763	{	681	{
764	aio_req req;	682	SvGETMAGIC (cb_sv);
765	int type;	683	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	}	684	}
918		685
919	#define dREQ \	686	#define dREQ \
		687	SV *cb_cv; \
920	aio_req req; \	688	aio_req req; \
		689	int req_pri = next_pri; \
		690	next_pri = EIO_PRI_DEFAULT; \
921	\	691	\
922	if (SvOK (callback) && !SvROK (callback)) \	692	cb_cv = get_cb (callback); \
923	croak ("callback must be undef or of reference type"); \
924	\	693	\
925	Newz (0, req, 1, aio_cb); \	694	Newz (0, req, 1, eio_req); \
926	if (!req) \	695	if (!req) \
927	croak ("out of memory during aio_req allocation"); \	696	croak ("out of memory during eio_req allocation"); \
928	\	697	\
929	req->callback = newSVsv (callback)	698	req->callback = SvREFCNT_inc (cb_cv); \
		699	req->pri = req_pri
930		700
931	#define REQ_SEND \	701	#define REQ_SEND \
		702	PUTBACK; \
932	req_send (req); \	703	req_submit (req); \
		704	SPAGAIN; \
933	\	705	\
934	if (GIMME_V != G_VOID) \	706	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));	707	XPUSHs (req_sv (req, aio_req_stash));
936		708
937	MODULE = IO::AIO PACKAGE = IO::AIO	709	MODULE = IO::AIO PACKAGE = IO::AIO
938		710
939	PROTOTYPES: ENABLE	711	PROTOTYPES: ENABLE
940		712
941	BOOT:	713	BOOT:
942	{	714	{
		715	static const struct {
		716	const char *name;
		717	IV iv;
		718	} *civ, const_iv[] = {
		719	# define const_niv(name, value) { # name, (IV) value },
		720	# define const_iv(name) { # name, (IV) name },
		721	# define const_eio(name) { # name, (IV) EIO_ ## name },
		722	const_iv (EXDEV)
		723	const_iv (ENOSYS)
		724	const_iv (O_RDONLY)
		725	const_iv (O_WRONLY)
		726	const_iv (O_RDWR)
		727	const_iv (O_CREAT)
		728	const_iv (O_TRUNC)
		729	const_iv (O_EXCL)
		730	const_iv (O_APPEND)
		731	#ifndef _WIN32
		732	const_iv (S_IFIFO)
		733	#endif
		734	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		735	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		736	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		737	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		738	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		739	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		740
		741	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		742	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		743	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		744	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		745	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		746
		747	const_iv (ST_RDONLY)
		748	const_iv (ST_NOSUID)
		749	const_iv (ST_NODEV)
		750	const_iv (ST_NOEXEC)
		751	const_iv (ST_SYNCHRONOUS)
		752	const_iv (ST_MANDLOCK)
		753	const_iv (ST_WRITE)
		754	const_iv (ST_APPEND)
		755	const_iv (ST_IMMUTABLE)
		756	const_iv (ST_NOATIME)
		757	const_iv (ST_NODIRATIME)
		758	const_iv (ST_RELATIME)
		759
		760	const_iv (PROT_NONE)
		761	const_iv (PROT_EXEC)
		762	const_iv (PROT_READ)
		763	const_iv (PROT_WRITE)
		764
		765	/*const_iv (MAP_FIXED)*/
		766	const_iv (MAP_PRIVATE)
		767	const_iv (MAP_SHARED)
		768	const_iv (MAP_ANONYMOUS)
		769
		770	/* linuxish */
		771	const_iv (MAP_HUGETLB)
		772	const_iv (MAP_LOCKED)
		773	const_iv (MAP_NORESERVE)
		774	const_iv (MAP_POPULATE)
		775	const_iv (MAP_NONBLOCK)
		776
		777	const_eio (MCL_FUTURE)
		778	const_eio (MCL_CURRENT)
		779
		780	const_eio (MS_ASYNC)
		781	const_eio (MS_INVALIDATE)
		782	const_eio (MS_SYNC)
		783
		784	const_eio (MT_MODIFY)
		785
		786	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		787	const_eio (SYNC_FILE_RANGE_WRITE)
		788	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		789
		790	const_eio (READDIR_DENTS)
		791	const_eio (READDIR_DIRS_FIRST)
		792	const_eio (READDIR_STAT_ORDER)
		793	const_eio (READDIR_FOUND_UNKNOWN)
		794
		795	const_eio (DT_UNKNOWN)
		796	const_eio (DT_FIFO)
		797	const_eio (DT_CHR)
		798	const_eio (DT_DIR)
		799	const_eio (DT_BLK)
		800	const_eio (DT_REG)
		801	const_eio (DT_LNK)
		802	const_eio (DT_SOCK)
		803	const_eio (DT_WHT)
		804	};
		805
943	HV *stash = gv_stashpv ("IO::AIO", 1);	806	aio_stash = gv_stashpv ("IO::AIO" , 1);
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	807	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	808	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947		809
		810	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		811	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		812
		813	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		814
948	create_pipe ();	815	create_respipe ();
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950	}
951		816
		817	if (eio_init (want_poll, done_poll) < 0)
		818	croak ("IO::AIO: unable to initialise eio library");
		819
		820	/* atfork child called in fifo order, so before eio's handler */
		821	X_THREAD_ATFORK (0, 0, atfork_child);
		822	}
		823
952	void	824	void
953	min_parallel (nthreads)	825	max_poll_reqs (int nreqs)
954	int nthreads
955	PROTOTYPE: $	826	PROTOTYPE: $
		827	CODE:
		828	eio_set_max_poll_reqs (nreqs);
956		829
957	void	830	void
958	max_parallel (nthreads)	831	max_poll_time (double nseconds)
959	int nthreads
960	PROTOTYPE: $	832	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	833	CODE:
967	RETVAL = max_outstanding;	834	eio_set_max_poll_time (nseconds);
		835
		836	void
		837	min_parallel (int nthreads)
		838	PROTOTYPE: $
		839	CODE:
		840	eio_set_min_parallel (nthreads);
		841
		842	void
		843	max_parallel (int nthreads)
		844	PROTOTYPE: $
		845	CODE:
		846	eio_set_max_parallel (nthreads);
		847
		848	void
		849	max_idle (int nthreads)
		850	PROTOTYPE: $
		851	CODE:
		852	eio_set_max_idle (nthreads);
		853
		854	void
		855	max_outstanding (int maxreqs)
		856	PROTOTYPE: $
		857	CODE:
968	max_outstanding = nreqs;	858	max_outstanding = maxreqs;
969		859
970	void	860	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	861	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
972	SV * pathname
973	int flags
974	int mode
975	SV * callback
976	PROTOTYPE: $$$;$
977	PPCODE:	862	PPCODE:
978	{	863	{
979	dREQ;	864	dREQ;
980		865
981	req->type = REQ_OPEN;	866	req->type = EIO_OPEN;
982	req->data = newSVsv (pathname);	867	req->sv1 = newSVsv (pathname);
983	req->dataptr = SvPVbyte_nolen (req->data);	868	req->ptr1 = SvPVbyte_nolen (req->sv1);
984	req->fd = flags;	869	req->int1 = flags;
985	req->mode = mode;	870	req->int2 = mode;
986		871
987	REQ_SEND;	872	REQ_SEND;
988	}	873	}
989		874
990	void	875	void
991	aio_close (fh,callback=&PL_sv_undef)	876	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$
995	ALIAS:	877	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC	878	aio_fsync = EIO_FSYNC
998	aio_fdatasync = REQ_FDATASYNC	879	aio_fdatasync = EIO_FDATASYNC
999	PPCODE:	880	PPCODE:
1000	{	881	{
		882	int fd = s_fileno_croak (fh, 0);
1001	dREQ;	883	dREQ;
1002		884
1003	req->type = ix;	885	req->type = ix;
1004	req->fh = newSVsv (fh);	886	req->sv1 = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	887	req->int1 = fd;
1006		888
1007	REQ_SEND (req);	889	REQ_SEND (req);
1008	}	890	}
1009		891
1010	void	892	void
		893	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		894	PPCODE:
		895	{
		896	int fd = s_fileno_croak (fh, 0);
		897	dREQ;
		898
		899	req->type = EIO_SYNC_FILE_RANGE;
		900	req->sv1 = newSVsv (fh);
		901	req->int1 = fd;
		902	req->offs = offset;
		903	req->size = nbytes;
		904	req->int2 = flags;
		905
		906	REQ_SEND (req);
		907	}
		908
		909	void
		910	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		911	PPCODE:
		912	{
		913	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		914	int fd = s_fileno_croak (fh, 0);
		915	dREQ;
		916
		917	if (close_pipe < 0)
		918	{
		919	int pipefd [2];
		920
		921	if (pipe (pipefd) < 0
		922	|| close (pipefd [1]) < 0
		923	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		924	abort (); /*D*/
		925
		926	close_pipe = pipefd [0];
		927	}
		928
		929	req->type = EIO_DUP2;
		930	req->int1 = close_pipe;
		931	req->sv2 = newSVsv (fh);
		932	req->int2 = fd;
		933
		934	REQ_SEND (req);
		935	}
		936
		937	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	938	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:	939	ALIAS:
1019	aio_read = REQ_READ	940	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	941	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$
1022	PPCODE:	942	PPCODE:
1023	{	943	{
1024	aio_req req;
1025	STRLEN svlen;	944	STRLEN svlen;
		945	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	946	char *svptr = SvPVbyte (data, svlen);
1027		947	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		948
1031	if (dataoffset < 0)	949	if (dataoffset < 0)
1032	dataoffset += svlen;	950	dataoffset += svlen;
1033		951
1034	if (dataoffset < 0 || dataoffset > svlen)	952	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	953	croak ("dataoffset outside of data scalar");
1036		954
1037	if (ix == REQ_WRITE)	955	if (ix == EIO_WRITE)
1038	{	956	{
1039	/* write: check length and adjust. */	957	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	958	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	959	len = svlen - dataoffset;
1042	}	960	}
1043	else	961	else
1044	{	962	{
1045	/* read: grow scalar as necessary */	963	/* read: check type and grow scalar as necessary */
		964	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	965	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	966	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		967
1052	{	968	{
1053	dREQ;	969	dREQ;
1054		970
1055	req->type = ix;	971	req->type = ix;
1056	req->fh = newSVsv (fh);	972	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	974	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	975	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	976	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	977	req->ptr2 = (char *)svptr + dataoffset;
		978	req->stroffset = dataoffset;
1063		979
1064	if (!SvREADONLY (data))	980	if (!SvREADONLY (data))
1065	{	981	{
1066	SvREADONLY_on (data);	982	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	983	req->flags |= FLAG_SV2_RO_OFF;
1068	}	984	}
1069		985
1070	REQ_SEND;	986	REQ_SEND;
1071	}	987	}
1072	}	988	}
1073		989
1074	void	990	void
1075	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	991	aio_readlink (SV8 *path, 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: $$$$;$
1082	PPCODE:	992	PPCODE:
1083	{	993	{
		994	SV *data;
		995	dREQ;
		996
		997	req->type = EIO_READLINK;
		998	req->sv1 = newSVsv (path);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000
		1001	REQ_SEND;
		1002	}
		1003
		1004	void
		1005	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1006	PPCODE:
		1007	{
		1008	int ifd = s_fileno_croak (in_fh , 0);
		1009	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	1010	dREQ;
1085		1011
1086	req->type = REQ_SENDFILE;	1012	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	1013	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1014	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	1015	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1016	req->int2 = ifd;
1091	req->offset = in_offset;	1017	req->offs = in_offset;
1092	req->length = length;	1018	req->size = length;
1093		1019
1094	REQ_SEND;	1020	REQ_SEND;
1095	}	1021	}
1096		1022
1097	void	1023	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1024	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$
1104	PPCODE:	1025	PPCODE:
1105	{	1026	{
		1027	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	1028	dREQ;
1107		1029
1108	req->type = REQ_READAHEAD;	1030	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	1031	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1032	req->int1 = fd;
1111	req->offset = offset;	1033	req->offs = offset;
1112	req->length = length;	1034	req->size = length;
1113		1035
1114	REQ_SEND;	1036	REQ_SEND;
1115	}	1037	}
1116		1038
1117	void	1039	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	1040	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	1041	ALIAS:
1122	aio_stat = REQ_STAT	1042	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	1043	aio_lstat = EIO_LSTAT
		1044	aio_statvfs = EIO_STATVFS
1124	PPCODE:	1045	PPCODE:
1125	{	1046	{
1126	dREQ;	1047	dREQ;
1127		1048
1128	New (0, req->statdata, 1, Stat_t);	1049	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		1050
1135	if (SvPOK (fh_or_path))	1051	if (SvPOK (req->sv1))
1136	{	1052	{
1137	req->type = ix;	1053	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);	1054	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140	}	1055	}
1141	else	1056	else
1142	{	1057	{
1143	req->type = REQ_FSTAT;	1058	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)));	1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}	1060	}
1147		1061
1148	REQ_SEND;	1062	REQ_SEND;
1149	}	1063	}
1150		1064
1151	void	1065	void
		1066	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1072	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1073	req->sv1 = newSVsv (fh_or_path);
		1074
		1075	if (SvPOK (req->sv1))
		1076	{
		1077	req->type = EIO_UTIME;
		1078	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1079	}
		1080	else
		1081	{
		1082	req->type = EIO_FUTIME;
		1083	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1084	}
		1085
		1086	REQ_SEND;
		1087	}
		1088
		1089	void
		1090	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1091	PPCODE:
		1092	{
		1093	dREQ;
		1094
		1095	req->sv1 = newSVsv (fh_or_path);
		1096	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1097
		1098	if (SvPOK (req->sv1))
		1099	{
		1100	req->type = EIO_TRUNCATE;
		1101	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1102	}
		1103	else
		1104	{
		1105	req->type = EIO_FTRUNCATE;
		1106	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1107	}
		1108
		1109	REQ_SEND;
		1110	}
		1111
		1112	void
		1113	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1114	ALIAS:
		1115	aio_chmod = EIO_CHMOD
		1116	aio_mkdir = EIO_MKDIR
		1117	PPCODE:
		1118	{
		1119	dREQ;
		1120
		1121	req->int2 = mode;
		1122	req->sv1 = newSVsv (fh_or_path);
		1123
		1124	if (SvPOK (req->sv1))
		1125	{
		1126	req->type = ix;
		1127	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1128	}
		1129	else
		1130	{
		1131	req->type = EIO_FCHMOD;
		1132	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1133	}
		1134
		1135	REQ_SEND;
		1136	}
		1137
		1138	void
		1139	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	dREQ;
		1143
		1144	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1145	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1146	req->sv1 = newSVsv (fh_or_path);
		1147
		1148	if (SvPOK (req->sv1))
		1149	{
		1150	req->type = EIO_CHOWN;
		1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1152	}
		1153	else
		1154	{
		1155	req->type = EIO_FCHOWN;
		1156	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1157	}
		1158
		1159	REQ_SEND;
		1160	}
		1161
		1162	void
		1163	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	dREQ;
		1167
		1168	req->type = EIO_READDIR;
		1169	req->sv1 = newSVsv (pathname);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1172
		1173	if (flags & EIO_READDIR_DENTS)
		1174	req->int1 |= EIO_READDIR_CUSTOM2;
		1175
		1176	REQ_SEND;
		1177	}
		1178
		1179	void
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1180	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1181	ALIAS:
1156	aio_unlink = REQ_UNLINK	1182	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1183	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1184	aio_readdir = EIO_READDIR
1159	PPCODE:	1185	PPCODE:
1160	{	1186	{
1161	dREQ;	1187	dREQ;
1162		1188
1163	req->type = ix;	1189	req->type = ix;
1164	req->data = newSVsv (pathname);	1190	req->sv1 = newSVsv (pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1191	req->ptr1 = SvPVbyte_nolen (req->sv1);
1166		1192
1167	REQ_SEND;	1193	REQ_SEND;
1168	}	1194	}
1169		1195
1170	void	1196	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1197	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1198	ALIAS:
1176	aio_link = REQ_LINK	1199	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1200	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1201	aio_rename = EIO_RENAME
1179	PPCODE:	1202	PPCODE:
1180	{	1203	{
1181	dREQ;	1204	dREQ;
1182		1205
1183	req->type = ix;	1206	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1207	req->sv1 = newSVsv (oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
1186	req->data = newSVsv (newpath);	1209	req->sv2 = newSVsv (newpath);
1187	req->dataptr = SvPVbyte_nolen (req->data);	1210	req->ptr2 = SvPVbyte_nolen (req->sv2);
1188		1211
1189	REQ_SEND;	1212	REQ_SEND;
1190	}	1213	}
1191		1214
1192	void	1215	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1216	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1217	PPCODE:
1197	{	1218	{
1198	dREQ;	1219	dREQ;
1199		1220
1200	req->type = REQ_SLEEP;	1221	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1222	req->sv1 = newSVsv (pathname);
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1223	req->ptr1 = SvPVbyte_nolen (req->sv1);
1203		1224	req->int2 = (mode_t)mode;
		1225	req->offs = dev;
		1226
1204	REQ_SEND;	1227	REQ_SEND;
1205	}	1228	}
1206		1229
1207	void	1230	void
1208	aio_group (callback=&PL_sv_undef)	1231	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1209	SV * callback	1232	ALIAS:
1210	PROTOTYPE: ;$	1233	aio_mtouch = EIO_MTOUCH
		1234	aio_msync = EIO_MSYNC
1211	PPCODE:	1235	PPCODE:
1212	{	1236	{
		1237	STRLEN svlen;
		1238	char *svptr = SvPVbyte (data, svlen);
		1239	UV len = SvUV (length);
		1240
		1241	if (offset < 0)
		1242	offset += svlen;
		1243
		1244	if (offset < 0 || offset > svlen)
		1245	croak ("offset outside of scalar");
		1246
		1247	if (!SvOK (length) || len + offset > svlen)
		1248	len = svlen - offset;
		1249
		1250	{
		1251	dREQ;
		1252
		1253	req->type = ix;
		1254	req->sv2 = SvREFCNT_inc (data);
		1255	req->ptr2 = (char *)svptr + offset;
		1256	req->size = len;
		1257	req->int1 = flags;
		1258
		1259	REQ_SEND;
		1260	}
		1261	}
		1262
		1263	void
		1264	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	STRLEN svlen;
		1268	char *svptr = SvPVbyte (data, svlen);
		1269	UV len = SvUV (length);
		1270
		1271	if (offset < 0)
		1272	offset += svlen;
		1273
		1274	if (offset < 0 || offset > svlen)
		1275	croak ("offset outside of scalar");
		1276
		1277	if (!SvOK (length) || len + offset > svlen)
		1278	len = svlen - offset;
		1279
		1280	{
		1281	dREQ;
		1282
		1283	req->type = EIO_MLOCK;
		1284	req->sv2 = SvREFCNT_inc (data);
		1285	req->ptr2 = (char *)svptr + offset;
		1286	req->size = len;
		1287
		1288	REQ_SEND;
		1289	}
		1290	}
		1291
		1292	void
		1293	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_MLOCKALL;
		1299	req->int1 = flags;
		1300
		1301	REQ_SEND;
		1302	}
		1303
		1304	void
		1305	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1306	PPCODE:
		1307	{
1213	dREQ;	1308	dREQ;
		1309
		1310	req->type = EIO_BUSY;
		1311	req->nv1 = delay < 0. ? 0. : delay;
		1312
		1313	REQ_SEND;
		1314	}
		1315
		1316	void
		1317	aio_group (SV *callback=&PL_sv_undef)
		1318	PPCODE:
		1319	{
		1320	dREQ;
		1321
1214	req->type = REQ_GROUP;	1322	req->type = EIO_GROUP;
		1323
1215	req_send (req);	1324	req_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1325	XPUSHs (req_sv (req, aio_grp_stash));
1217	}	1326	}
1218		1327
1219	void	1328	void
1220	aio_nop (callback=&PL_sv_undef)	1329	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	1330	ALIAS:
		1331	aio_nop = EIO_NOP
		1332	aio_sync = EIO_SYNC
1222	PPCODE:	1333	PPCODE:
1223	{	1334	{
1224	dREQ;	1335	dREQ;
1225		1336
1226	req->type = REQ_NOP;	1337	req->type = ix;
1227		1338
1228	REQ_SEND;	1339	REQ_SEND;
1229	}	1340	}
1230		1341
		1342	int
		1343	aioreq_pri (int pri = 0)
		1344	CODE:
		1345	RETVAL = next_pri;
		1346	if (items > 0)
		1347	{
		1348	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1349	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1350	next_pri = pri;
		1351	}
		1352	OUTPUT:
		1353	RETVAL
		1354
		1355	void
		1356	aioreq_nice (int nice = 0)
		1357	CODE:
		1358	nice = next_pri - nice;
		1359	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1360	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1361	next_pri = nice;
		1362
1231	void	1363	void
1232	flush ()	1364	flush ()
1233	PROTOTYPE:
1234	CODE:	1365	CODE:
1235	while (nreqs)	1366	while (eio_nreqs ())
1236	{	1367	{
1237	poll_wait ();	1368	poll_wait ();
1238	poll_cb ();	1369	poll_cb ();
1239	}	1370	}
1240		1371
1241	void	1372	int
1242	poll()	1373	poll ()
1243	PROTOTYPE:
1244	CODE:	1374	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	1375	poll_wait ();
1248	poll_cb ();	1376	RETVAL = poll_cb ();
1249	}
1250
1251	int
1252	poll_fileno()
1253	PROTOTYPE:
1254	CODE:
1255	RETVAL = respipe [0];
1256	OUTPUT:	1377	OUTPUT:
1257	RETVAL	1378	RETVAL
1258		1379
1259	int	1380	int
		1381	poll_fileno ()
		1382	CODE:
		1383	RETVAL = s_epipe_fd (&respipe);
		1384	OUTPUT:
		1385	RETVAL
		1386
		1387	int
1260	poll_cb(...)	1388	poll_cb (...)
1261	PROTOTYPE:	1389	PROTOTYPE:
1262	CODE:	1390	CODE:
1263	RETVAL = poll_cb ();	1391	RETVAL = poll_cb ();
1264	OUTPUT:	1392	OUTPUT:
1265	RETVAL	1393	RETVAL
1266		1394
1267	void	1395	void
1268	poll_wait()	1396	poll_wait ()
1269	PROTOTYPE:
1270	CODE:	1397	CODE:
1271	if (nreqs)
1272	poll_wait ();	1398	poll_wait ();
1273		1399
1274	int	1400	int
1275	nreqs()	1401	nreqs ()
1276	PROTOTYPE:
1277	CODE:	1402	CODE:
1278	RETVAL = nreqs;	1403	RETVAL = eio_nreqs ();
1279	OUTPUT:	1404	OUTPUT:
1280	RETVAL	1405	RETVAL
1281		1406
		1407	int
		1408	nready ()
		1409	CODE:
		1410	RETVAL = eio_nready ();
		1411	OUTPUT:
		1412	RETVAL
		1413
		1414	int
		1415	npending ()
		1416	CODE:
		1417	RETVAL = eio_npending ();
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	int
		1422	nthreads ()
		1423	CODE:
		1424	RETVAL = eio_nthreads ();
		1425	OUTPUT:
		1426	RETVAL
		1427
		1428	int
		1429	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1430	CODE:
		1431	RETVAL = posix_fadvise (fh, offset, length, advice);
		1432	OUTPUT:
		1433	RETVAL
		1434
		1435	ssize_t
		1436	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1437	CODE:
		1438	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1439	OUTPUT:
		1440	RETVAL
		1441
		1442	void
		1443	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1444	PPCODE:
		1445	sv_unmagic (scalar, MMAP_MAGIC);
		1446	{
		1447	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1448	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1449	if (addr == (void *)-1)
		1450	XSRETURN_NO;
		1451
		1452	sv_force_normal (scalar);
		1453
		1454	/* we store the length in mg_obj, as namlen is I32 :/ */
		1455	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1456	->mg_obj = (SV *)length;
		1457
		1458	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1459
		1460	if (!(prot & PROT_WRITE))
		1461	SvREADONLY_on (scalar);
		1462
		1463	if (SvLEN (scalar))
		1464	Safefree (SvPVX (scalar));
		1465
		1466	SvPVX (scalar) = (char *)addr;
		1467	SvCUR_set (scalar, length);
		1468	SvLEN_set (scalar, 0);
		1469	SvPOK_only (scalar);
		1470
		1471	XSRETURN_YES;
		1472	}
		1473
		1474	void
		1475	munmap (SV *scalar)
		1476	CODE:
		1477	sv_unmagic (scalar, MMAP_MAGIC);
		1478
		1479	int
		1480	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1481	ALIAS:
		1482	mprotect = 1
		1483	CODE:
		1484	{
		1485	STRLEN svlen;
		1486	void *addr = SvPVbyte (scalar, svlen);
		1487	size_t len = SvUV (length);
		1488
		1489	if (offset < 0)
		1490	offset += svlen;
		1491
		1492	if (offset < 0 || offset > svlen)
		1493	croak ("offset outside of scalar");
		1494
		1495	if (!SvOK (length) || len + offset > svlen)
		1496	len = svlen - offset;
		1497
		1498	addr = (void *)(((intptr_t)addr) + offset);
		1499	eio_page_align (&addr, &len);
		1500
		1501	switch (ix)
		1502	{
		1503	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1504	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1505	}
		1506	}
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1512	CODE:
		1513	{
		1514	STRLEN svlen;
		1515	void *addr = SvPVbyte (scalar, svlen);
		1516	size_t len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 || offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) || len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	addr = (void *)(((intptr_t)addr) + offset);
		1528	eio_page_align (&addr, &len);
		1529	#if _POSIX_MEMLOCK
		1530	RETVAL = munlock (addr, len);
		1531	#else
		1532	RETVAL = ((errno = ENOSYS), -1);
		1533	#endif
		1534	}
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	munlockall ()
		1540	CODE:
		1541	#if _POSIX_MEMLOCK
		1542	munlockall ();
		1543	#else
		1544	RETVAL = -1;
		1545	errno = ENOSYS;
		1546	#endif
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void _on_next_submit (SV *cb)
		1551	CODE:
		1552	SvREFCNT_dec (on_next_submit);
		1553	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1554
1282	PROTOTYPES: DISABLE	1555	PROTOTYPES: DISABLE
1283		1556
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1557	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1558
1286	void	1559	void
1287	cancel (aio_req_ornot req)	1560	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1561	CODE:
1290	req_cancel (req);	1562	eio_cancel (req);
1291		1563
1292	void	1564	void
1293	cb (aio_req req, SV *callback=&PL_sv_undef)	1565	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1294	CODE:	1566	PPCODE:
		1567	{
		1568	if (GIMME_V != G_VOID)
		1569	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1570
		1571	if (items > 1)
		1572	{
		1573	SV *cb_cv =get_cb (callback);
		1574
1295	SvREFCNT_dec (req->callback);	1575	SvREFCNT_dec (req->callback);
1296	req->callback = newSVsv (callback);	1576	req->callback = SvREFCNT_inc (cb_cv);
		1577	}
		1578	}
1297		1579
1298	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1580	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1299		1581
1300	void	1582	void
1301	add (aio_req grp, ...)	1583	add (aio_req grp, ...)
1302	PPCODE:	1584	PPCODE:
1303	{	1585	{
1304	int i;	1586	int i;
1305	aio_req req;
1306		1587
1307	if (grp->fd == 2)	1588	if (grp->int1 == 2)
1308	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1589	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1309		1590
1310	for (i = 1; i < items; ++i )	1591	for (i = 1; i < items; ++i )
1311	{	1592	{
		1593	aio_req req;
		1594
1312	if (GIMME_V != G_VOID)	1595	if (GIMME_V != G_VOID)
1313	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1596	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1314		1597
1315	req = SvAIO_REQ (ST (i));	1598	req = SvAIO_REQ (ST (i));
1316		1599
1317	if (req)	1600	if (req)
1318	{	1601	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	}	1602	}
1331	}	1603	}
		1604
		1605	void
		1606	cancel_subs (aio_req_ornot req)
		1607	CODE:
		1608	req_cancel_subs (req);
1332		1609
1333	void	1610	void
1334	result (aio_req grp, ...)	1611	result (aio_req grp, ...)
1335	CODE:	1612	CODE:
1336	{	1613	{
1337	int i;	1614	int i;
		1615	AV *av;
		1616
		1617	grp->errorno = errno;
		1618
1338	AV *av = newAV ();	1619	av = newAV ();
		1620	av_extend (av, items - 1);
1339		1621
1340	for (i = 1; i < items; ++i )	1622	for (i = 1; i < items; ++i )
1341	av_push (av, newSVsv (ST (i)));	1623	av_push (av, newSVsv (ST (i)));
1342		1624
1343	SvREFCNT_dec (grp->data);	1625	SvREFCNT_dec (grp->sv1);
1344	grp->data = (SV *)av;	1626	grp->sv1 = (SV *)av;
1345	}	1627	}
1346		1628
1347	void	1629	void
		1630	errno (aio_req grp, int errorno = errno)
		1631	CODE:
		1632	grp->errorno = errorno;
		1633
		1634	void
1348	feed_limit (aio_req grp, int limit)	1635	limit (aio_req grp, int limit)
1349	CODE:	1636	CODE:
1350	grp->fd2 = limit;	1637	eio_grp_limit (grp, limit);
1351	aio_grp_feed (grp);
1352		1638
1353	void	1639	void
1354	feed (aio_req grp, SV *callback=&PL_sv_undef)	1640	feed (aio_req grp, SV *callback=&PL_sv_undef)
1355	CODE:	1641	CODE:
1356	{	1642	{
1357	SvREFCNT_dec (grp->fh2);	1643	SvREFCNT_dec (grp->sv2);
1358	grp->fh2 = newSVsv (callback);	1644	grp->sv2 = newSVsv (callback);
		1645	grp->feed = aio_grp_feed;
1359		1646
1360	if (grp->fd2 <= 0)	1647	if (grp->int2 <= 0)
1361	grp->fd2 = 2;	1648	grp->int2 = 2;
1362		1649
1363	aio_grp_feed (grp);	1650	eio_grp_limit (grp, grp->int2);
1364	}	1651	}
1365		1652

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines