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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.178 by root, Fri Jan 7 21:45:42 2011 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
23	#include <limits.h>	17	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	18	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	19	#include <sched.h>
28		20
29	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30	# if __linux
31	# include <sys/sendfile.h>	22	# include <sys/mman.h>
32	# elif __freebsd	23	#endif
33	# 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
34	# include <sys/uio.h>	68	# include <sys/time.h>
35	# elif __hpux
36	# include <sys/socket.h>
37	# elif __solaris /* not yet */
38	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		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 !HAVE_POSIX_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	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef MAP_ANONYMOUS
		214	# ifdef MAP_ANON
		215	# define MAP_ANONYMOUS MAP_ANON
39	# else	216	# else
40	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	218	# endif
42	#endif	219	#endif
43		220	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	221	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	222	#endif
48		223	#ifndef MAP_LOCKED
49	#if __ia64	224	# define MAP_LOCKED 0
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif	225	#endif
		226	#ifndef MAP_NORESERVE
		227	# define MAP_NORESERVE 0
		228	#endif
		229	#ifndef MAP_POPULATE
		230	# define MAP_POPULATE 0
		231	#endif
		232	#ifndef MAP_NONBLOCK
		233	# define MAP_NONBLOCK 0
		234	#endif
56		235
57	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
58	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
59		239
60	#define dBUF \	240	static int req_invoke (eio_req *req);
61	char *aio_buf = malloc (AIO_BUFSIZE); \	241	#define EIO_FINISH(req) req_invoke (req)
62	if (!aio_buf) \	242	static void req_destroy (eio_req *grp);
63	return -1;	243	#define EIO_DESTROY(req) req_destroy (req)
64
65	#define fBUF free (aio_buf)
66		244
67	enum {	245	enum {
68	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};	247	};
80		248
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		250
84	typedef struct aio_cb
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;
89	SV *fh, *fh2;
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;
97	int type;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101
102	unsigned char flags;
103	unsigned char pri;
104
105	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;
108
109	enum {
110	FLAG_CANCELLED = 0x01,
111	};
112
113	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
115		253
116	enum {	254	static SV *on_next_submit;
117	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	};
123
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	256	static int max_outstanding;
129	static int respipe [2];
130		257
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	258	static s_epipe respipe;
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif
136		259
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	260	static void req_destroy (aio_req req);
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141	static volatile aio_req reqs, reqe; /* queue start, queue end */
142	static volatile aio_req ress, rese; /* queue start, queue end */
143
144	static void req_invoke (aio_req req);	261	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	262
		263	static void want_poll (void)
		264	{
		265	/* write a dummy byte to the pipe so fh becomes ready */
		266	s_epipe_signal (&respipe);
		267	}
		268
		269	static void done_poll (void)
		270	{
		271	/* read any signals sent by the worker threads */
		272	s_epipe_drain (&respipe);
		273	}
146		274
147	/* must be called at most once */	275	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
149	{	277	{
150	if (!req->self)	278	if (!req->self)
151	{	279	{
152	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154	}	282	}
155		283
156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157	}	285	}
158		286
159	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
160	{	288	{
161	MAGIC *mg;	289	MAGIC *mg;
162		290
163	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	291	if (!SvROK (sv)
		292	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		293	&& SvSTASH (SvRV (sv)) != aio_req_stash
		294	&& !sv_derived_from (sv, "IO::AIO::REQ")))
164	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
165		296
166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167		298
168	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	300	}
170		301
171	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
172	{	303	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	304	if (grp->sv2 && SvOK (grp->sv2))
174	{	305	{
175	int old_len = grp->length;	306	dSP;
176		307
177	if (grp->fh2 && SvOK (grp->fh2))	308	ENTER;
		309	SAVETMPS;
		310	PUSHMARK (SP);
		311	XPUSHs (req_sv (grp, aio_grp_stash));
		312	PUTBACK;
		313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		314	SPAGAIN;
		315	FREETMPS;
		316	LEAVE;
		317	}
		318	}
		319
		320	static void req_submit (eio_req *req)
		321	{
		322	eio_submit (req);
		323
		324	if (expect_false (on_next_submit))
		325	{
		326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
		334	}
		335	}
		336
		337	static int req_invoke (eio_req *req)
		338	{
		339	if (req->flags & FLAG_SV2_RO_OFF)
		340	SvREADONLY_off (req->sv2);
		341
		342	if (!EIO_CANCELLED (req) && req->callback)
		343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
		348	ENTER;
		349	SAVETMPS;
		350	PUSHMARK (SP);
		351	EXTEND (SP, 1);
		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
178	{	355	{
179	dSP;	356	sv_result = sv_result_cache; sv_result_cache = 0;
180		357	SvIV_set (sv_result, req->result);
181	ENTER;	358	SvIOK_only (sv_result);
182	SAVETMPS;
183	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185	PUTBACK;
186	call_sv (grp->fh2, G_VOID | G_EVAL);
187	SPAGAIN;
188	FREETMPS;
189	LEAVE;
190	}	359	}
191		360	else
192	/* stop if no progress has been made */
193	if (old_len == grp->length)
194	{	361	{
195	SvREFCNT_dec (grp->fh2);	362	sv_result = newSViv (req->result);
196	grp->fh2 = 0;	363	SvREADONLY_on (sv_result);
197	break;
198	}	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(), so 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;
199	}	557	}
200	}
201		558
202	static void aio_grp_dec (aio_req grp)	559	return !!SvTRUE (ERRSV);
203	{
204	--grp->length;
205
206	/* call feeder, if applicable */
207	aio_grp_feed (grp);
208
209	/* finish, if done */
210	if (!grp->length && grp->fd)
211	{
212	req_invoke (grp);
213	req_free (grp);
214	}
215	}	560	}
216		561
217	static void poll_wait ()
218	{
219	fd_set rfd;
220
221	while (nreqs)
222	{
223	aio_req req;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225	pthread_mutex_lock (&reslock);
226	#endif
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231
232	if (req)
233	return;
234
235	FD_ZERO(&rfd);
236	FD_SET(respipe [0], &rfd);
237
238	select (respipe [0] + 1, &rfd, 0, 0, 0);
239	}
240	}
241
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)	562	static void req_destroy (aio_req req)
342	{	563	{
343	if (req->grp)
344	{
345	aio_req grp = req->grp;
346
347	/* unlink request */
348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351	if (grp->grp_first == req)
352	grp->grp_first = req->grp_next;
353
354	aio_grp_dec (grp);
355	}
356
357	if (req->self)	564	if (req->self)
358	{	565	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
361	}	568	}
362		569
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	570	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	571	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		573
372	Safefree (req);	574	Safefree (req);
373	}	575	}
374		576
375	static void req_cancel (aio_req req)	577	static void req_cancel_subs (aio_req grp)
376	{	578	{
377	req->flags |= FLAG_CANCELLED;	579	aio_req sub;
378		580
379	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 ())
380	{	600	{
381	aio_req sub;	601	int size;
382		602
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	603	X_LOCK (reslock);
384	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);
385	}	613	}
386	}	614	}
387		615
388	static int poll_cb ()	616	static int poll_cb (void)
389	{	617	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	618	for (;;)
396	{	619	{
397	pthread_mutex_lock (&reslock);	620	int res = eio_poll ();
398	req = ress;
399		621
400	if (req)	622	if (res > 0)
401	{
402	ress = req->next;
403
404	if (!ress)
405	{
406	/* read any signals sent by the worker threads */
407	char buf [32];
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}
413	}
414
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;	623	croak (0);
419		624
420	--nreqs;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
		626	return res;
421		627
422	if (req->type == REQ_QUIT)	628	poll_wait ();
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	629	}
451
452	return count;
453	}	630	}
454		631
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)	632	static void atfork_child (void)
458	{	633	{
459	sigset_t fullsigset, oldsigset;	634	create_respipe ();
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}
475
476	static void req_send (aio_req req)
477	{
478	while (started < wanted && nreqs >= started)
479	start_thread ();
480
481	++nreqs;
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}
544
545	static void create_pipe ()
546	{
547	if (pipe (respipe))
548	croak ("unable to initialize result pipe");
549
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551	croak ("cannot set result pipe to nonblocking mode");
552
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554	croak ("cannot set result pipe to nonblocking mode");
555	}	635	}
556		636
557	/*****************************************************************************/	637	/*****************************************************************************/
558	/* work around various missing functions */
559		638
560	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
561	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
562	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
563		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
564	/*	643	# define PROT_NONE 0
565	* make our pread/pwrite safe against themselves, but not against	644	# define PROT_WRITE 0
566	* normal read/write by using a mutex. slows down execution a lot,	645	# define MAP_PRIVATE 0
567	* but that's your problem, not mine.	646	# define MAP_SHARED 0
568	*/	647	# define MAP_FIXED 0
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{
573	ssize_t res;
574	off_t ooffset;
575
576	pthread_mutex_lock (&preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582
583	return res;
584	}
585
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{
588	ssize_t res;
589	off_t ooffset;
590
591	pthread_mutex_lock (&preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597
598	return res;
599	}
600	#endif
601
602	#if !HAVE_FDATASYNC
603	# define fdatasync fsync
604	#endif
605
606	#if !HAVE_READAHEAD
607	# define readahead aio_readahead
608
609	static ssize_t readahead (int fd, off_t offset, size_t count)
610	{
611	dBUF;
612
613	while (count > 0)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616
617	pread (fd, aio_buf, len, offset);
618	offset += len;
619	count -= len;
620	}
621
622	fBUF;
623
624	errno = 0;
625	}
626	#endif
627
628	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r
630
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{
635	struct dirent *e;
636	int errorno;
637
638	pthread_mutex_lock (&readdirlock);
639
640	e = readdir (dirp);
641	errorno = errno;
642
643	if (e)
644	{
645	*res = ent;
646	strcpy (ent->d_name, e->d_name);
647	}
648	else
649	*res = 0;
650
651	pthread_mutex_unlock (&readdirlock);
652
653	errno = errorno;
654	return e ? 0 : -1;
655	}
656	#endif
657
658	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
660	{
661	ssize_t res;
662
663	if (!count)
664	return 0;
665
666	#if HAVE_SENDFILE
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669
670	# elif __freebsd
671	/*
672	* Of course, the freebsd sendfile is a dire hack with no thoughts
673	* wasted on making it similar to other I/O functions.
674	*/
675	{
676	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678
679	if (res < 0 && sbytes)
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
681	res = sbytes;
682	}
683
684	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);
686
687	# elif __solaris
688	{
689	struct sendfilevec vec;
690	size_t sbytes;
691
692	vec.sfv_fd = ifd;
693	vec.sfv_flag = 0;
694	vec.sfv_off = offset;
695	vec.sfv_len = count;
696
697	res = sendfilev (ofd, &vec, 1, &sbytes);
698
699	if (res < 0 && sbytes)
700	res = sbytes;
701	}
702
703	# endif	648	#endif
704	#else
705	res = -1;
706	errno = ENOSYS;
707	#endif
708		649
709	if (res < 0	650	#define MMAP_MAGIC PERL_MAGIC_ext
710	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711	#if __solaris
712	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
713	#endif
714	)
715	)
716	{
717	/* emulate sendfile. this is a major pain in the ass */
718	dBUF;
719		651
720	res = 0;	652	static int
721		653	mmap_free (pTHX_ SV *sv, MAGIC *mg)
722	while (count)
723	{
724	ssize_t cnt;
725
726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728	if (cnt <= 0)
729	{
730	if (cnt && !res) res = -1;
731	break;
732	}
733
734	cnt = write (ofd, aio_buf, cnt);
735
736	if (cnt <= 0)
737	{
738	if (cnt && !res) res = -1;
739	break;
740	}
741
742	offset += cnt;
743	res += cnt;
744	count -= cnt;
745	}
746
747	fBUF;
748	}
749
750	return res;
751	}
752
753	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)
755	{	654	{
756	DIR *dirp;	655	int old_errno = errno;
757	union	656	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
758	{
759	struct dirent d;
760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761	} *u;
762	struct dirent *entp;
763	char *name, *names;
764	int memlen = 4096;
765	int memofs = 0;
766	int res = 0;
767	int errorno;
768
769	dirp = opendir (path);
770	if (!dirp)
771	return -1;
772
773	u = malloc (sizeof (*u));
774	names = malloc (memlen);
775
776	if (u && names)
777	for (;;)
778	{
779	errno = 0;
780	readdir_r (dirp, &u->d, &entp);
781
782	if (!entp)
783	break;
784
785	name = entp->d_name;
786
787	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788	{
789	int len = strlen (name) + 1;
790
791	res++;
792
793	while (memofs + len > memlen)
794	{
795	memlen *= 2;
796	names = realloc (names, memlen);
797	if (!names)
798	break;
799	}
800
801	memcpy (names + memofs, name, len);
802	memofs += len;
803	}
804	}
805
806	errorno = errno;	657	errno = old_errno;
807	free (u);
808	closedir (dirp);
809		658
810	if (errorno)	659	mg->mg_obj = 0; /* just in case */
811	{
812	free (names);
813	errno = errorno;
814	res = -1;
815	}
816		660
817	*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
818	return res;	670	return 0;
819	}	671	}
		672
		673	static MGVTBL mmap_vtbl = {
		674	0, 0, 0, 0, mmap_free
		675	};
820		676
821	/*****************************************************************************/	677	/*****************************************************************************/
822		678
823	static void *aio_proc (void *thr_arg)	679	static SV *
		680	get_cb (SV *cb_sv)
824	{	681	{
825	aio_req req;	682	SvGETMAGIC (cb_sv);
826	int type;	683	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831
832	for (;;)
833	{
834	req = reqs;
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841
842	if (req)
843	break;
844
845	pthread_cond_wait (&reqwait, &reqlock);
846	}
847
848	pthread_mutex_unlock (&reqlock);
849
850	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852
853	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)
855	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878	case REQ_SLEEP:
879	{
880	struct timeval tv;
881
882	tv.tv_sec = req->fd;
883	tv.tv_usec = req->fd2;
884
885	req->result = select (0, 0, 0, 0, &tv);
886	}
887
888	case REQ_GROUP:
889	case REQ_NOP:
890	case REQ_QUIT:
891	break;
892
893	default:
894	req->result = ENOSYS;
895	break;
896	}
897
898	req->errorno = errno;
899
900	pthread_mutex_lock (&reslock);
901
902	req->next = 0;
903
904	if (rese)
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);
915	}
916
917	pthread_mutex_unlock (&reslock);
918	}
919	while (type != REQ_QUIT);
920
921	return 0;
922	}
923
924	/*****************************************************************************/
925
926	static void atfork_prepare (void)
927	{
928	pthread_mutex_lock (&reqlock);
929	pthread_mutex_lock (&reslock);
930	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);
932	#endif
933	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);
935	#endif
936	}
937
938	static void atfork_parent (void)
939	{
940	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);
942	#endif
943	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);
945	#endif
946	pthread_mutex_unlock (&reslock);
947	pthread_mutex_unlock (&reqlock);
948	}
949
950	static void atfork_child (void)
951	{
952	aio_req prv;
953
954	started = 0;
955
956	while (reqs)
957	{
958	prv = reqs;
959	reqs = prv->next;
960	req_free (prv);
961	}
962
963	reqs = reqe = 0;
964
965	while (ress)
966	{
967	prv = ress;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973
974	close (respipe [0]);
975	close (respipe [1]);
976	create_pipe ();
977
978	atfork_parent ();
979	}	684	}
980		685
981	#define dREQ \	686	#define dREQ \
		687	SV *cb_cv; \
982	aio_req req; \	688	aio_req req; \
983	int req_pri = next_pri; \	689	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	690	next_pri = EIO_PRI_DEFAULT; \
985	\	691	\
986	if (SvOK (callback) && !SvROK (callback)) \	692	cb_cv = get_cb (callback); \
987	croak ("callback must be undef or of reference type"); \
988	\	693	\
989	Newz (0, req, 1, aio_cb); \	694	Newz (0, req, 1, eio_req); \
990	if (!req) \	695	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	696	croak ("out of memory during eio_req allocation"); \
992	\	697	\
993	req->callback = newSVsv (callback); \	698	req->callback = SvREFCNT_inc (cb_cv); \
994	req->pri = req_pri	699	req->pri = req_pri
995		700
996	#define REQ_SEND \	701	#define REQ_SEND \
		702	PUTBACK; \
997	req_send (req); \	703	req_submit (req); \
		704	SPAGAIN; \
998	\	705	\
999	if (GIMME_V != G_VOID) \	706	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	707	XPUSHs (req_sv (req, aio_req_stash));
1001		708
1002	MODULE = IO::AIO PACKAGE = IO::AIO	709	MODULE = IO::AIO PACKAGE = IO::AIO
1003		710
1004	PROTOTYPES: ENABLE	711	PROTOTYPES: ENABLE
1005		712
1006	BOOT:	713	BOOT:
1007	{	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
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	806	aio_stash = gv_stashpv ("IO::AIO" , 1);
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	807	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	808	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012		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
1013	create_pipe ();	815	create_respipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016		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
1017	void	824	void
1018	min_parallel (nthreads)	825	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	826	PROTOTYPE: $
		827	CODE:
		828	eio_set_max_poll_reqs (nreqs);
1021		829
1022	void	830	void
1023	max_parallel (nthreads)	831	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	832	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	833	CODE:
1032	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:
1033	max_outstanding = nreqs;	858	max_outstanding = maxreqs;
1034		859
1035	void	860	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	861	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$
1042	PPCODE:	862	PPCODE:
1043	{	863	{
1044	dREQ;	864	dREQ;
1045		865
1046	req->type = REQ_OPEN;	866	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	867	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	868	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	869	req->int1 = flags;
1050	req->mode = mode;	870	req->int2 = mode;
1051		871
1052	REQ_SEND;	872	REQ_SEND;
1053	}	873	}
1054		874
1055	void	875	void
1056	aio_close (fh,callback=&PL_sv_undef)	876	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$
1060	ALIAS:	877	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	878	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	879	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	880	PPCODE:
1065	{	881	{
		882	int fd = s_fileno_croak (fh, 0);
1066	dREQ;	883	dREQ;
1067		884
1068	req->type = ix;	885	req->type = ix;
1069	req->fh = newSVsv (fh);	886	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	887	req->int1 = fd;
1071		888
1072	REQ_SEND (req);	889	REQ_SEND (req);
1073	}	890	}
1074		891
1075	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
1076	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)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	939	ALIAS:
1084	aio_read = REQ_READ	940	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	941	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$
1087	PPCODE:	942	PPCODE:
1088	{	943	{
1089	aio_req req;
1090	STRLEN svlen;	944	STRLEN svlen;
		945	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	946	char *svptr = SvPVbyte (data, svlen);
1092		947	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		948
1096	if (dataoffset < 0)	949	if (dataoffset < 0)
1097	dataoffset += svlen;	950	dataoffset += svlen;
1098		951
1099	if (dataoffset < 0 || dataoffset > svlen)	952	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	953	croak ("dataoffset outside of data scalar");
1101		954
1102	if (ix == REQ_WRITE)	955	if (ix == EIO_WRITE)
1103	{	956	{
1104	/* write: check length and adjust. */	957	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	958	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	959	len = svlen - dataoffset;
1107	}	960	}
1108	else	961	else
1109	{	962	{
1110	/* read: grow scalar as necessary */	963	/* read: check type and grow scalar as necessary */
		964	SvUPGRADE (data, SVt_PV);
1111	svptr = SvGROW (data, length + dataoffset);	965	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	966	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		967
1117	{	968	{
1118	dREQ;	969	dREQ;
1119		970
1120	req->type = ix;	971	req->type = ix;
1121	req->fh = newSVsv (fh);	972	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	974	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	975	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	976	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	977	req->ptr2 = (char *)svptr + dataoffset;
		978	req->stroffset = dataoffset;
1128		979
1129	if (!SvREADONLY (data))	980	if (!SvREADONLY (data))
1130	{	981	{
1131	SvREADONLY_on (data);	982	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	983	req->flags |= FLAG_SV2_RO_OFF;
1133	}	984	}
1134		985
1135	REQ_SEND;	986	REQ_SEND;
1136	}	987	}
1137	}	988	}
1138		989
1139	void	990	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	991	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$
1147	PPCODE:	992	PPCODE:
1148	{	993	{
		994	SV *data;
		995	dREQ;
		996
		997	req->type = EIO_READLINK;
		998	req->sv1 = newSVsv (path);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000
		1001	REQ_SEND;
		1002	}
		1003
		1004	void
		1005	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1006	PPCODE:
		1007	{
		1008	int ifd = s_fileno_croak (in_fh , 0);
		1009	int ofd = s_fileno_croak (out_fh, 1);
1149	dREQ;	1010	dREQ;
1150		1011
1151	req->type = REQ_SENDFILE;	1012	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1013	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1014	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	1015	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1016	req->int2 = ifd;
1156	req->offset = in_offset;	1017	req->offs = in_offset;
1157	req->length = length;	1018	req->size = length;
1158		1019
1159	REQ_SEND;	1020	REQ_SEND;
1160	}	1021	}
1161		1022
1162	void	1023	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1024	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$
1169	PPCODE:	1025	PPCODE:
1170	{	1026	{
		1027	int fd = s_fileno_croak (fh, 0);
1171	dREQ;	1028	dREQ;
1172		1029
1173	req->type = REQ_READAHEAD;	1030	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	1031	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1032	req->int1 = fd;
1176	req->offset = offset;	1033	req->offs = offset;
1177	req->length = length;	1034	req->size = length;
1178		1035
1179	REQ_SEND;	1036	REQ_SEND;
1180	}	1037	}
1181		1038
1182	void	1039	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1040	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1041	ALIAS:
1187	aio_stat = REQ_STAT	1042	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	1043	aio_lstat = EIO_LSTAT
		1044	aio_statvfs = EIO_STATVFS
1189	PPCODE:	1045	PPCODE:
1190	{	1046	{
1191	dREQ;	1047	dREQ;
1192		1048
1193	New (0, req->statdata, 1, Stat_t);	1049	req->sv1 = newSVsv (fh_or_path);
1194	if (!req->statdata)
1195	{
1196	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");
1198	}
1199		1050
1200	if (SvPOK (fh_or_path))	1051	if (SvPOK (req->sv1))
1201	{	1052	{
1202	req->type = ix;	1053	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1054	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	1055	}
1206	else	1056	else
1207	{	1057	{
1208	req->type = REQ_FSTAT;	1058	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	1060	}
1212		1061
1213	REQ_SEND;	1062	REQ_SEND;
1214	}	1063	}
1215		1064
1216	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
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1180	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1181	ALIAS:
1221	aio_unlink = REQ_UNLINK	1182	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	1183	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	1184	aio_readdir = EIO_READDIR
1224	PPCODE:	1185	PPCODE:
1225	{	1186	{
1226	dREQ;	1187	dREQ;
1227		1188
1228	req->type = ix;	1189	req->type = ix;
1229	req->data = newSVsv (pathname);	1190	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1191	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1192
1232	REQ_SEND;	1193	REQ_SEND;
1233	}	1194	}
1234		1195
1235	void	1196	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1197	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1198	ALIAS:
1241	aio_link = REQ_LINK	1199	aio_link = EIO_LINK
1242	aio_symlink = REQ_SYMLINK	1200	aio_symlink = EIO_SYMLINK
1243	aio_rename = REQ_RENAME	1201	aio_rename = EIO_RENAME
1244	PPCODE:	1202	PPCODE:
1245	{	1203	{
1246	dREQ;	1204	dREQ;
1247		1205
1248	req->type = ix;	1206	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1207	req->sv1 = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	1209	req->sv2 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1210	req->ptr2 = SvPVbyte_nolen (req->sv2);
1253		1211
1254	REQ_SEND;	1212	REQ_SEND;
1255	}	1213	}
1256		1214
1257	void	1215	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1216	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1217	PPCODE:
1262	{	1218	{
1263	dREQ;	1219	dREQ;
1264		1220
1265	req->type = REQ_SLEEP;	1221	req->type = EIO_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1222	req->sv1 = newSVsv (pathname);
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1223	req->ptr1 = SvPVbyte_nolen (req->sv1);
1268		1224	req->int2 = (mode_t)mode;
		1225	req->offs = dev;
		1226
1269	REQ_SEND;	1227	REQ_SEND;
1270	}	1228	}
1271		1229
1272	void	1230	void
1273	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)
1274	SV * callback	1232	ALIAS:
1275	PROTOTYPE: ;$	1233	aio_mtouch = EIO_MTOUCH
		1234	aio_msync = EIO_MSYNC
1276	PPCODE:	1235	PPCODE:
1277	{	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	{
1278	dREQ;	1308	dREQ;
1279		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
1280	req->type = REQ_GROUP;	1322	req->type = EIO_GROUP;
		1323
1281	req_send (req);	1324	req_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1325	XPUSHs (req_sv (req, aio_grp_stash));
1284	}	1326	}
1285		1327
1286	void	1328	void
1287	aio_nop (callback=&PL_sv_undef)	1329	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	1330	ALIAS:
		1331	aio_nop = EIO_NOP
		1332	aio_sync = EIO_SYNC
1289	PPCODE:	1333	PPCODE:
1290	{	1334	{
1291	dREQ;	1335	dREQ;
1292		1336
1293	req->type = REQ_NOP;	1337	req->type = ix;
1294		1338
1295	REQ_SEND;	1339	REQ_SEND;
1296	}	1340	}
1297		1341
1298	#if 0	1342	int
1299		1343	aioreq_pri (int pri = 0)
1300	void
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1344	CODE:
		1345	RETVAL = next_pri;
		1346	if (items > 0)
		1347	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1348	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1349	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1350	next_pri = pri;
		1351	}
		1352	OUTPUT:
		1353	RETVAL
1306		1354
1307	#endif	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;
1308		1362
1309	void	1363	void
1310	flush ()	1364	flush ()
1311	PROTOTYPE:
1312	CODE:	1365	CODE:
1313	while (nreqs)	1366	while (eio_nreqs ())
1314	{	1367	{
1315	poll_wait ();	1368	poll_wait ();
1316	poll_cb ();	1369	poll_cb ();
1317	}	1370	}
1318		1371
1319	void	1372	int
1320	poll()	1373	poll ()
1321	PROTOTYPE:
1322	CODE:	1374	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1375	poll_wait ();
1326	poll_cb ();	1376	RETVAL = poll_cb ();
1327	}
1328
1329	int
1330	poll_fileno()
1331	PROTOTYPE:
1332	CODE:
1333	RETVAL = respipe [0];
1334	OUTPUT:	1377	OUTPUT:
1335	RETVAL	1378	RETVAL
1336		1379
1337	int	1380	int
		1381	poll_fileno ()
		1382	CODE:
		1383	RETVAL = s_epipe_fd (&respipe);
		1384	OUTPUT:
		1385	RETVAL
		1386
		1387	int
1338	poll_cb(...)	1388	poll_cb (...)
1339	PROTOTYPE:	1389	PROTOTYPE:
1340	CODE:	1390	CODE:
1341	RETVAL = poll_cb ();	1391	RETVAL = poll_cb ();
1342	OUTPUT:	1392	OUTPUT:
1343	RETVAL	1393	RETVAL
1344		1394
1345	void	1395	void
1346	poll_wait()	1396	poll_wait ()
1347	PROTOTYPE:
1348	CODE:	1397	CODE:
1349	if (nreqs)
1350	poll_wait ();	1398	poll_wait ();
1351		1399
1352	int	1400	int
1353	nreqs()	1401	nreqs ()
1354	PROTOTYPE:
1355	CODE:	1402	CODE:
1356	RETVAL = nreqs;	1403	RETVAL = eio_nreqs ();
1357	OUTPUT:	1404	OUTPUT:
1358	RETVAL	1405	RETVAL
1359		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_RANGE
		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
1360	PROTOTYPES: DISABLE	1555	PROTOTYPES: DISABLE
1361		1556
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1557	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1558
1364	void	1559	void
1365	cancel (aio_req_ornot req)	1560	cancel (aio_req_ornot req)
1366	CODE:	1561	CODE:
1367	req_cancel (req);	1562	eio_cancel (req);
1368		1563
1369	void	1564	void
1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1565	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1371	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
1372	SvREFCNT_dec (req->callback);	1575	SvREFCNT_dec (req->callback);
1373	req->callback = newSVsv (callback);	1576	req->callback = SvREFCNT_inc (cb_cv);
		1577	}
		1578	}
1374		1579
1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1580	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376		1581
1377	void	1582	void
1378	add (aio_req grp, ...)	1583	add (aio_req grp, ...)
1379	PPCODE:	1584	PPCODE:
1380	{	1585	{
1381	int i;	1586	int i;
1382	aio_req req;
1383		1587
1384	if (grp->fd == 2)	1588	if (grp->int1 == 2)
1385	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");
1386		1590
1387	for (i = 1; i < items; ++i )	1591	for (i = 1; i < items; ++i )
1388	{	1592	{
		1593	aio_req req;
		1594
1389	if (GIMME_V != G_VOID)	1595	if (GIMME_V != G_VOID)
1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1596	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391		1597
1392	req = SvAIO_REQ (ST (i));	1598	req = SvAIO_REQ (ST (i));
1393		1599
1394	if (req)	1600	if (req)
1395	{	1601	eio_grp_add (grp, req);
1396	++grp->length;
1397	req->grp = grp;
1398
1399	req->grp_prev = 0;
1400	req->grp_next = grp->grp_first;
1401
1402	if (grp->grp_first)
1403	grp->grp_first->grp_prev = req;
1404
1405	grp->grp_first = req;
1406	}
1407	}	1602	}
1408	}	1603	}
		1604
		1605	void
		1606	cancel_subs (aio_req_ornot req)
		1607	CODE:
		1608	req_cancel_subs (req);
1409		1609
1410	void	1610	void
1411	result (aio_req grp, ...)	1611	result (aio_req grp, ...)
1412	CODE:	1612	CODE:
1413	{	1613	{
1414	int i;	1614	int i;
		1615	AV *av;
		1616
		1617	grp->errorno = errno;
		1618
1415	AV *av = newAV ();	1619	av = newAV ();
		1620	av_extend (av, items - 1);
1416		1621
1417	for (i = 1; i < items; ++i )	1622	for (i = 1; i < items; ++i )
1418	av_push (av, newSVsv (ST (i)));	1623	av_push (av, newSVsv (ST (i)));
1419		1624
1420	SvREFCNT_dec (grp->data);	1625	SvREFCNT_dec (grp->sv1);
1421	grp->data = (SV *)av;	1626	grp->sv1 = (SV *)av;
1422	}	1627	}
1423		1628
1424	void	1629	void
		1630	errno (aio_req grp, int errorno = errno)
		1631	CODE:
		1632	grp->errorno = errorno;
		1633
		1634	void
1425	feed_limit (aio_req grp, int limit)	1635	limit (aio_req grp, int limit)
1426	CODE:	1636	CODE:
1427	grp->fd2 = limit;	1637	eio_grp_limit (grp, limit);
1428	aio_grp_feed (grp);
1429		1638
1430	void	1639	void
1431	feed (aio_req grp, SV *callback=&PL_sv_undef)	1640	feed (aio_req grp, SV *callback=&PL_sv_undef)
1432	CODE:	1641	CODE:
1433	{	1642	{
1434	SvREFCNT_dec (grp->fh2);	1643	SvREFCNT_dec (grp->sv2);
1435	grp->fh2 = newSVsv (callback);	1644	grp->sv2 = newSVsv (callback);
		1645	grp->feed = aio_grp_feed;
1436		1646
1437	if (grp->fd2 <= 0)	1647	if (grp->int2 <= 0)
1438	grp->fd2 = 2;	1648	grp->int2 = 2;
1439		1649
1440	aio_grp_feed (grp);	1650	eio_grp_limit (grp, grp->int2);
1441	}	1651	}
1442		1652

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