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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 1.171 by root, Wed Aug 4 17:16:19 2010 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_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/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 MCL_CURRENT
		215	# define MCL_CURRENT 0
		216	#endif
		217	#ifndef MCL_FUTURE
		218	# define MCL_FUTURE 0
		219	#endif
		220
		221	#ifndef MAP_ANONYMOUS
		222	# ifdef MAP_ANON
		223	# define MAP_ANONYMOUS MAP_ANON
39	# else	224	# else
40	# error sendfile support requested but not available	225	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	226	# endif
42	#endif	227	#endif
43		228	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	229	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	230	#endif
48		231	#ifndef MAP_LOCKED
49	#if __ia64	232	# 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	233	#endif
		234	#ifndef MAP_NORESERVE
		235	# define MAP_NORESERVE 0
		236	#endif
		237	#ifndef MAP_POPULATE
		238	# define MAP_POPULATE 0
		239	#endif
		240	#ifndef MAP_NONBLOCK
		241	# define MAP_NONBLOCK 0
		242	#endif
56		243
57	/* buffer size for various temporary buffers */	244	#ifndef PAGESIZE
58	#define AIO_BUFSIZE 65536	245	# define PAGESIZE sysconf (_SC_PAGESIZE)
		246	#endif
59		247
60	#define dBUF \	248	static int req_invoke (eio_req *req);
61	char *aio_buf = malloc (AIO_BUFSIZE); \	249	#define EIO_FINISH(req) req_invoke (req)
62	if (!aio_buf) \	250	static void req_destroy (eio_req *grp);
63	return -1;	251	#define EIO_DESTROY(req) req_destroy (req)
64
65	#define fBUF free (aio_buf)
66		252
67	enum {	253	enum {
68	REQ_QUIT,	254	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	};	255	};
80		256
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	257	#include "libeio/eio.c"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		258
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;	259	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	260	typedef eio_req *aio_req_ornot;
115		261
116	enum {	262	static SV *on_next_submit;
117	PRI_MIN = -4,	263	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;	264	static int max_outstanding;
129	static int respipe [2];
130		265
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	266	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		267
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	268	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);	269	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	270
		271	static void want_poll (void)
		272	{
		273	/* write a dummy byte to the pipe so fh becomes ready */
		274	s_epipe_signal (&respipe);
		275	}
		276
		277	static void done_poll (void)
		278	{
		279	/* read any signals sent by the worker threads */
		280	s_epipe_drain (&respipe);
		281	}
146		282
147	/* must be called at most once */	283	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	284	static SV *req_sv (aio_req req, HV *stash)
149	{	285	{
150	if (!req->self)	286	if (!req->self)
151	{	287	{
152	req->self = (SV *)newHV ();	288	req->self = (SV *)newHV ();
153	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	289	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
154	}	290	}
155		291
156	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	292	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
157	}	293	}
158		294
159	static aio_req SvAIO_REQ (SV *sv)	295	static aio_req SvAIO_REQ (SV *sv)
160	{	296	{
161	MAGIC *mg;	297	MAGIC *mg;
162		298
163	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	299	if (!SvROK (sv)
		300	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		301	&& SvSTASH (SvRV (sv)) != aio_req_stash
		302	&& !sv_derived_from (sv, "IO::AIO::REQ")))
164	croak ("object of class " AIO_REQ_KLASS " expected");	303	croak ("object of class IO::AIO::REQ expected");
165		304
166	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	305	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
167		306
168	return mg ? (aio_req)mg->mg_ptr : 0;	307	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	308	}
170		309
171	static void aio_grp_feed (aio_req grp)	310	static void aio_grp_feed (aio_req grp)
172	{	311	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	312	if (grp->sv2 && SvOK (grp->sv2))
174	{	313	{
175	int old_len = grp->length;	314	dSP;
176		315
177	if (grp->fh2 && SvOK (grp->fh2))	316	ENTER;
		317	SAVETMPS;
		318	PUSHMARK (SP);
		319	XPUSHs (req_sv (grp, aio_grp_stash));
		320	PUTBACK;
		321	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		322	SPAGAIN;
		323	FREETMPS;
		324	LEAVE;
		325	}
		326	}
		327
		328	static void req_submit (eio_req *req)
		329	{
		330	eio_submit (req);
		331
		332	if (expect_false (on_next_submit))
		333	{
		334	dSP;
		335	SV *cb = sv_2mortal (on_next_submit);
		336
		337	on_next_submit = 0;
		338
		339	PUSHMARK (SP);
		340	PUTBACK;
		341	call_sv (cb, G_DISCARD | G_EVAL);
		342	}
		343	}
		344
		345	static int req_invoke (eio_req *req)
		346	{
		347	if (req->flags & FLAG_SV2_RO_OFF)
		348	SvREADONLY_off (req->sv2);
		349
		350	if (!EIO_CANCELLED (req) && req->callback)
		351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
		356	ENTER;
		357	SAVETMPS;
		358	PUSHMARK (SP);
		359	EXTEND (SP, 1);
		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
178	{	363	{
179	dSP;	364	sv_result = sv_result_cache; sv_result_cache = 0;
180		365	SvIV_set (sv_result, req->result);
181	ENTER;
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	}	366	}
191		367	else
192	/* stop if no progress has been made */
193	if (old_len == grp->length)
194	{	368	{
195	SvREFCNT_dec (grp->fh2);	369	sv_result = newSViv (req->result);
196	grp->fh2 = 0;	370	SvREADONLY_on (sv_result);
197	break;
198	}	371	}
		372
		373	switch (req->type)
		374	{
		375	case EIO_READDIR:
		376	{
		377	SV *rv = &PL_sv_undef;
		378
		379	if (req->result >= 0)
		380	{
		381	int i;
		382	char *names = (char *)req->ptr2;
		383	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		384	AV *av = newAV ();
		385
		386	av_extend (av, req->result - 1);
		387
		388	for (i = 0; i < req->result; ++i)
		389	{
		390	if (req->int1 & EIO_READDIR_DENTS)
		391	{
		392	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM2)
		395	{
		396	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		397	AV *avent = newAV ();
		398
		399	av_extend (avent, 2);
		400
		401	if (!sv_type [ent->type])
		402	{
		403	sv_type [ent->type] = newSViv (ent->type);
		404	SvREADONLY_on (sv_type [ent->type]);
		405	}
		406
		407	av_store (avent, 0, namesv);
		408	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		409	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		410
		411	av_store (av, i, newRV_noinc ((SV *)avent));
		412	}
		413	else
		414	av_store (av, i, namesv);
		415
		416	++ent;
		417	}
		418	else
		419	{
		420	SV *name = newSVpv (names, 0);
		421	av_store (av, i, name);
		422	names += SvCUR (name) + 1;
		423	}
		424	}
		425
		426	rv = sv_2mortal (newRV_noinc ((SV *)av));
		427	}
		428
		429	PUSHs (rv);
		430
		431	if (req->int1 & EIO_READDIR_CUSTOM1)
		432	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		433	}
		434	break;
		435
		436	case EIO_OPEN:
		437	{
		438	/* convert fd to fh */
		439	SV *fh = &PL_sv_undef;
		440
		441	if (req->result >= 0)
		442	{
		443	GV *gv = (GV *)sv_newmortal ();
		444	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		445	char sym [64];
		446	int symlen;
		447
		448	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		449	gv_init (gv, aio_stash, sym, symlen, 0);
		450
		451	symlen = snprintf (
		452	sym,
		453	sizeof (sym),
		454	"%s&=%d",
		455	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		456	(int)req->result
		457	);
		458
		459	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		460	fh = (SV *)gv;
		461	}
		462
		463	PUSHs (fh);
		464	}
		465	break;
		466
		467	case EIO_STATVFS:
		468	case EIO_FSTATVFS:
		469	{
		470	SV *rv = &PL_sv_undef;
		471
		472	if (req->result >= 0)
		473	{
		474	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		475	HV *hv = newHV ();
		476
		477	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		478
		479	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		480	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		481	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		482	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		483	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		484	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		485	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		486	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		487	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		488	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		489	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		490	}
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	if (req->result > 0)
		517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		518	break;
		519
		520	case EIO_STAT:
		521	case EIO_LSTAT:
		522	case EIO_FSTAT:
		523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		524	PL_laststatval = req->result;
		525	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		526	PUSHs (sv_result);
		527	break;
		528
		529	case EIO_READ:
		530	{
		531	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		532	*SvEND (req->sv2) = 0;
		533	SvPOK_only (req->sv2);
		534	SvSETMAGIC (req->sv2);
		535	PUSHs (sv_result);
		536	}
		537	break;
		538
		539	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		540	if (req->result > 0)
		541	SvIV_set (sv_result, 0);
		542	/* FALLTHROUGH */
		543
		544	default:
		545	PUSHs (sv_result);
		546	break;
		547	}
		548
		549	errno = req->errorno;
		550
		551	PUTBACK;
		552	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		553	SPAGAIN;
		554
		555	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		556	SvREFCNT_dec (sv_result);
		557	else
		558	sv_result_cache = sv_result;
		559
		560	FREETMPS;
		561	LEAVE;
		562
		563	PUTBACK;
199	}	564	}
200	}
201		565
202	static void aio_grp_dec (aio_req grp)	566	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	}	567	}
216		568
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)	569	static void req_destroy (aio_req req)
342	{	570	{
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)	571	if (req->self)
358	{	572	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	573	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	574	SvREFCNT_dec (req->self);
361	}	575	}
362		576
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	577	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	578	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	579	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		580
372	Safefree (req);	581	Safefree (req);
373	}	582	}
374		583
375	static void req_cancel (aio_req req)	584	static void req_cancel_subs (aio_req grp)
376	{	585	{
377	req->flags |= FLAG_CANCELLED;	586	aio_req sub;
378		587
379	if (req->type == REQ_GROUP)	588	if (grp->type != EIO_GROUP)
		589	return;
		590
		591	SvREFCNT_dec (grp->sv2);
		592	grp->sv2 = 0;
		593
		594	eio_grp_cancel (grp);
		595	}
		596
		597	static void
		598	create_respipe (void)
		599	{
		600	if (s_epipe_renew (&respipe))
		601	croak ("IO::AIO: unable to initialize result pipe");
		602	}
		603
		604	static void poll_wait (void)
		605	{
		606	while (eio_nreqs ())
380	{	607	{
381	aio_req sub;	608	int size;
382		609
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	610	X_LOCK (reslock);
384	req_cancel (sub);	611	size = res_queue.size;
		612	X_UNLOCK (reslock);
		613
		614	if (size)
		615	return;
		616
		617	etp_maybe_start_thread ();
		618
		619	s_epipe_wait (&respipe);
385	}	620	}
386	}	621	}
387		622
388	static int poll_cb ()	623	static int poll_cb (void)
389	{	624	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	625	for (;;)
396	{	626	{
397	pthread_mutex_lock (&reslock);	627	int res = eio_poll ();
398	req = ress;
399		628
400	if (req)	629	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;	630	croak (0);
419		631
420	--nreqs;	632	if (!max_outstanding || max_outstanding > eio_nreqs ())
		633	return res;
421		634
422	if (req->type == REQ_QUIT)	635	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	}	636	}
451
452	return count;
453	}	637	}
454		638
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)	639	static void atfork_child (void)
458	{	640	{
459	sigset_t fullsigset, oldsigset;	641	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	}	642	}
556		643
557	/*****************************************************************************/	644	/*****************************************************************************/
558	/* work around various missing functions */
559		645
560	#if !HAVE_PREADWRITE	646	#if !_POSIX_MAPPED_FILES
561	# define pread aio_pread	647	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
562	# define pwrite aio_pwrite	648	# define munmap(addr,length) (errno = ENOSYS, -1)
563		649	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
564	/*
565	* make our pread/pwrite safe against themselves, but not against
566	* normal read/write by using a mutex. slows down execution a lot,
567	* but that's your problem, not mine.
568	*/
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	650	#endif
704	#else
705	res = -1;
706	errno = ENOSYS;
707	#endif
708		651
709	if (res < 0	652	#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		653
720	res = 0;	654	static int
721		655	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	{	656	{
756	DIR *dirp;	657	int old_errno = errno;
757	union	658	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;	659	errno = old_errno;
807	free (u);
808	closedir (dirp);
809		660
810	if (errorno)	661	mg->mg_obj = 0; /* just in case */
811	{
812	free (names);
813	errno = errorno;
814	res = -1;
815	}
816		662
817	*namesp = (void *)names;	663	SvREADONLY_off (sv);
		664
		665	if (SvPVX (sv) != mg->mg_ptr)
		666	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		667
		668	SvCUR_set (sv, 0);
		669	SvPVX (sv) = 0;
		670	SvOK_off (sv);
		671
818	return res;	672	return 0;
819	}	673	}
		674
		675	static MGVTBL mmap_vtbl = {
		676	0, 0, 0, 0, mmap_free
		677	};
820		678
821	/*****************************************************************************/	679	/*****************************************************************************/
822		680
823	static void *aio_proc (void *thr_arg)	681	static SV *
		682	get_cb (SV *cb_sv)
824	{	683	{
825	aio_req req;	684	SvGETMAGIC (cb_sv);
826	int type;	685	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	}	686	}
980		687
981	#define dREQ \	688	#define dREQ \
		689	SV *cb_cv; \
982	aio_req req; \	690	aio_req req; \
983	int req_pri = next_pri; \	691	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	692	next_pri = EIO_PRI_DEFAULT; \
985	\	693	\
986	if (SvOK (callback) && !SvROK (callback)) \	694	cb_cv = get_cb (callback); \
987	croak ("callback must be undef or of reference type"); \
988	\	695	\
989	Newz (0, req, 1, aio_cb); \	696	Newz (0, req, 1, eio_req); \
990	if (!req) \	697	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	698	croak ("out of memory during eio_req allocation"); \
992	\	699	\
993	req->callback = newSVsv (callback); \	700	req->callback = SvREFCNT_inc (cb_cv); \
994	req->pri = req_pri	701	req->pri = req_pri
995		702
996	#define REQ_SEND \	703	#define REQ_SEND \
		704	PUTBACK; \
997	req_send (req); \	705	req_submit (req); \
		706	SPAGAIN; \
998	\	707	\
999	if (GIMME_V != G_VOID) \	708	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	709	XPUSHs (req_sv (req, aio_req_stash));
1001		710
1002	MODULE = IO::AIO PACKAGE = IO::AIO	711	MODULE = IO::AIO PACKAGE = IO::AIO
1003		712
1004	PROTOTYPES: ENABLE	713	PROTOTYPES: ENABLE
1005		714
1006	BOOT:	715	BOOT:
1007	{	716	{
		717	static const struct {
		718	const char *name;
		719	IV iv;
		720	} *civ, const_iv[] = {
		721	# define const_niv(name, value) { # name, (IV) value },
		722	# define const_iv(name) { # name, (IV) name },
		723	# define const_eio(name) { # name, (IV) EIO_ ## name },
		724	const_iv (EXDEV)
		725	const_iv (ENOSYS)
		726	const_iv (O_RDONLY)
		727	const_iv (O_WRONLY)
		728	const_iv (O_RDWR)
		729	const_iv (O_CREAT)
		730	const_iv (O_TRUNC)
		731	const_iv (O_EXCL)
		732	const_iv (O_APPEND)
		733	#ifndef _WIN32
		734	const_iv (S_IFIFO)
		735	#endif
		736	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		737	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		738	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		739	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		740	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		741	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		742
		743	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		744	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		745	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		746	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		747	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		748
		749	const_iv (ST_RDONLY)
		750	const_iv (ST_NOSUID)
		751	const_iv (ST_NODEV)
		752	const_iv (ST_NOEXEC)
		753	const_iv (ST_SYNCHRONOUS)
		754	const_iv (ST_MANDLOCK)
		755	const_iv (ST_WRITE)
		756	const_iv (ST_APPEND)
		757	const_iv (ST_IMMUTABLE)
		758	const_iv (ST_NOATIME)
		759	const_iv (ST_NODIRATIME)
		760	const_iv (ST_RELATIME)
		761
		762	const_iv (PROT_NONE)
		763	const_iv (PROT_EXEC)
		764	const_iv (PROT_READ)
		765	const_iv (PROT_WRITE)
		766
		767	/*const_iv (MAP_FIXED)*/
		768	const_iv (MAP_PRIVATE)
		769	const_iv (MAP_SHARED)
		770	const_iv (MAP_ANONYMOUS)
		771
		772	/* linuxish */
		773	const_iv (MAP_HUGETLB)
		774	const_iv (MAP_LOCKED)
		775	const_iv (MAP_NORESERVE)
		776	const_iv (MAP_POPULATE)
		777	const_iv (MAP_NONBLOCK)
		778
		779	const_iv (MCL_FUTURE)
		780	const_iv (MCL_CURRENT)
		781
		782	const_eio (MS_ASYNC)
		783	const_eio (MS_INVALIDATE)
		784	const_eio (MS_SYNC)
		785
		786	const_eio (MT_MODIFY)
		787
		788	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		789	const_eio (SYNC_FILE_RANGE_WRITE)
		790	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		791
		792	const_eio (READDIR_DENTS)
		793	const_eio (READDIR_DIRS_FIRST)
		794	const_eio (READDIR_STAT_ORDER)
		795	const_eio (READDIR_FOUND_UNKNOWN)
		796
		797	const_eio (DT_UNKNOWN)
		798	const_eio (DT_FIFO)
		799	const_eio (DT_CHR)
		800	const_eio (DT_DIR)
		801	const_eio (DT_BLK)
		802	const_eio (DT_REG)
		803	const_eio (DT_LNK)
		804	const_eio (DT_SOCK)
		805	const_eio (DT_WHT)
		806	};
		807
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	808	aio_stash = gv_stashpv ("IO::AIO" , 1);
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	809	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	810	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012		811
		812	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		813	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		814
		815	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		816
1013	create_pipe ();	817	create_respipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016		818
		819	if (eio_init (want_poll, done_poll) < 0)
		820	croak ("IO::AIO: unable to initialise eio library");
		821
		822	/* atfork child called in fifo order, so before eio's handler */
		823	X_THREAD_ATFORK (0, 0, atfork_child);
		824	}
		825
1017	void	826	void
1018	min_parallel (nthreads)	827	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	828	PROTOTYPE: $
		829	CODE:
		830	eio_set_max_poll_reqs (nreqs);
1021		831
1022	void	832	void
1023	max_parallel (nthreads)	833	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	834	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	835	CODE:
1032	RETVAL = max_outstanding;	836	eio_set_max_poll_time (nseconds);
		837
		838	void
		839	min_parallel (int nthreads)
		840	PROTOTYPE: $
		841	CODE:
		842	eio_set_min_parallel (nthreads);
		843
		844	void
		845	max_parallel (int nthreads)
		846	PROTOTYPE: $
		847	CODE:
		848	eio_set_max_parallel (nthreads);
		849
		850	void
		851	max_idle (int nthreads)
		852	PROTOTYPE: $
		853	CODE:
		854	eio_set_max_idle (nthreads);
		855
		856	void
		857	max_outstanding (int maxreqs)
		858	PROTOTYPE: $
		859	CODE:
1033	max_outstanding = nreqs;	860	max_outstanding = maxreqs;
1034		861
1035	void	862	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	863	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: $$$;$	864	PROTOTYPE: $$$;$
1042	PPCODE:	865	PPCODE:
1043	{	866	{
1044	dREQ;	867	dREQ;
1045		868
1046	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	872	req->int1 = flags;
1050	req->mode = mode;	873	req->int2 = mode;
1051		874
1052	REQ_SEND;	875	REQ_SEND;
1053	}	876	}
1054		877
1055	void	878	void
1056	aio_close (fh,callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	880	PROTOTYPE: $;$
1060	ALIAS:	881	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	882	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	883	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	884	PPCODE:
1065	{	885	{
		886	int fd = s_fileno_croak (fh, 0);
1066	dREQ;	887	dREQ;
1067		888
1068	req->type = ix;	889	req->type = ix;
1069	req->fh = newSVsv (fh);	890	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	891	req->int1 = fd;
1071		892
1072	REQ_SEND (req);	893	REQ_SEND (req);
1073	}	894	}
1074		895
1075	void	896	void
		897	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		898	PROTOTYPE: $$$$;$
		899	PPCODE:
		900	{
		901	int fd = s_fileno_croak (fh, 0);
		902	dREQ;
		903
		904	req->type = EIO_SYNC_FILE_RANGE;
		905	req->sv1 = newSVsv (fh);
		906	req->int1 = fd;
		907	req->offs = offset;
		908	req->size = nbytes;
		909	req->int2 = flags;
		910
		911	REQ_SEND (req);
		912	}
		913
		914	void
		915	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		916	PROTOTYPE: $;$
		917	PPCODE:
		918	{
		919	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		920	int fd = s_fileno_croak (fh, 0);
		921	dREQ;
		922
		923	if (close_pipe < 0)
		924	{
		925	int pipefd [2];
		926
		927	if (pipe (pipefd) < 0
		928	|| close (pipefd [1]) < 0
		929	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		930	abort (); /*D*/
		931
		932	close_pipe = pipefd [0];
		933	}
		934
		935	req->type = EIO_DUP2;
		936	req->int1 = close_pipe;
		937	req->sv2 = newSVsv (fh);
		938	req->int2 = fd;
		939
		940	REQ_SEND (req);
		941	}
		942
		943	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	944	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	945	ALIAS:
1084	aio_read = REQ_READ	946	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	947	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$	948	PROTOTYPE: $$$$$;$
1087	PPCODE:	949	PPCODE:
1088	{	950	{
1089	aio_req req;
1090	STRLEN svlen;	951	STRLEN svlen;
		952	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	953	char *svptr = SvPVbyte (data, svlen);
1092		954	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		955
1096	if (dataoffset < 0)	956	if (dataoffset < 0)
1097	dataoffset += svlen;	957	dataoffset += svlen;
1098		958
1099	if (dataoffset < 0 || dataoffset > svlen)	959	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	960	croak ("dataoffset outside of data scalar");
1101		961
1102	if (ix == REQ_WRITE)	962	if (ix == EIO_WRITE)
1103	{	963	{
1104	/* write: check length and adjust. */	964	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	965	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	966	len = svlen - dataoffset;
1107	}	967	}
1108	else	968	else
1109	{	969	{
1110	/* read: grow scalar as necessary */	970	/* read: check type and grow scalar as necessary */
		971	SvUPGRADE (data, SVt_PV);
1111	svptr = SvGROW (data, length + dataoffset);	972	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	973	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		974
1117	{	975	{
1118	dREQ;	976	dREQ;
1119		977
1120	req->type = ix;	978	req->type = ix;
1121	req->fh = newSVsv (fh);	979	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	980	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	981	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	982	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	983	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	984	req->ptr2 = (char *)svptr + dataoffset;
		985	req->stroffset = dataoffset;
1128		986
1129	if (!SvREADONLY (data))	987	if (!SvREADONLY (data))
1130	{	988	{
1131	SvREADONLY_on (data);	989	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	990	req->flags |= FLAG_SV2_RO_OFF;
1133	}	991	}
1134		992
1135	REQ_SEND;	993	REQ_SEND;
1136	}	994	}
1137	}	995	}
1138		996
1139	void	997	void
		998	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		999	PROTOTYPE: $$;$
		1000	PPCODE:
		1001	{
		1002	SV *data;
		1003	dREQ;
		1004
		1005	req->type = EIO_READLINK;
		1006	req->sv1 = newSVsv (path);
		1007	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1008
		1009	REQ_SEND;
		1010	}
		1011
		1012	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1013	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, 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: $$$$;$	1014	PROTOTYPE: $$$$;$
1147	PPCODE:	1015	PPCODE:
1148	{	1016	{
		1017	int ifd = s_fileno_croak (in_fh , 0);
		1018	int ofd = s_fileno_croak (out_fh, 1);
1149	dREQ;	1019	dREQ;
1150		1020
1151	req->type = REQ_SENDFILE;	1021	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1022	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1023	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	1024	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1025	req->int2 = ifd;
1156	req->offset = in_offset;	1026	req->offs = in_offset;
1157	req->length = length;	1027	req->size = length;
1158		1028
1159	REQ_SEND;	1029	REQ_SEND;
1160	}	1030	}
1161		1031
1162	void	1032	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1033	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	1034	PROTOTYPE: $$$;$
1169	PPCODE:	1035	PPCODE:
1170	{	1036	{
		1037	int fd = s_fileno_croak (fh, 0);
1171	dREQ;	1038	dREQ;
1172		1039
1173	req->type = REQ_READAHEAD;	1040	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	1041	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1042	req->int1 = fd;
1176	req->offset = offset;	1043	req->offs = offset;
1177	req->length = length;	1044	req->size = length;
1178		1045
1179	REQ_SEND;	1046	REQ_SEND;
1180	}	1047	}
1181		1048
1182	void	1049	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1050	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1051	ALIAS:
1187	aio_stat = REQ_STAT	1052	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	1053	aio_lstat = EIO_LSTAT
		1054	aio_statvfs = EIO_STATVFS
1189	PPCODE:	1055	PPCODE:
1190	{	1056	{
1191	dREQ;	1057	dREQ;
1192		1058
1193	New (0, req->statdata, 1, Stat_t);	1059	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		1060
1200	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1201	{	1062	{
1202	req->type = ix;	1063	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	1065	}
1206	else	1066	else
1207	{	1067	{
1208	req->type = REQ_FSTAT;	1068	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)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	1070	}
1212		1071
1213	REQ_SEND;	1072	REQ_SEND;
1214	}	1073	}
1215		1074
1216	void	1075	void
		1076	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1077	PPCODE:
		1078	{
		1079	dREQ;
		1080
		1081	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1082	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1083	req->sv1 = newSVsv (fh_or_path);
		1084
		1085	if (SvPOK (req->sv1))
		1086	{
		1087	req->type = EIO_UTIME;
		1088	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1089	}
		1090	else
		1091	{
		1092	req->type = EIO_FUTIME;
		1093	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1094	}
		1095
		1096	REQ_SEND;
		1097	}
		1098
		1099	void
		1100	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1101	PPCODE:
		1102	{
		1103	dREQ;
		1104
		1105	req->sv1 = newSVsv (fh_or_path);
		1106	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1107
		1108	if (SvPOK (req->sv1))
		1109	{
		1110	req->type = EIO_TRUNCATE;
		1111	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1112	}
		1113	else
		1114	{
		1115	req->type = EIO_FTRUNCATE;
		1116	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1117	}
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
		1123	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1124	ALIAS:
		1125	aio_chmod = EIO_CHMOD
		1126	aio_mkdir = EIO_MKDIR
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->int2 = mode;
		1132	req->sv1 = newSVsv (fh_or_path);
		1133
		1134	if (SvPOK (req->sv1))
		1135	{
		1136	req->type = ix;
		1137	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1138	}
		1139	else
		1140	{
		1141	req->type = EIO_FCHMOD;
		1142	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1143	}
		1144
		1145	REQ_SEND;
		1146	}
		1147
		1148	void
		1149	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1150	PPCODE:
		1151	{
		1152	dREQ;
		1153
		1154	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1155	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1156	req->sv1 = newSVsv (fh_or_path);
		1157
		1158	if (SvPOK (req->sv1))
		1159	{
		1160	req->type = EIO_CHOWN;
		1161	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1162	}
		1163	else
		1164	{
		1165	req->type = EIO_FCHOWN;
		1166	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1167	}
		1168
		1169	REQ_SEND;
		1170	}
		1171
		1172	void
		1173	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	dREQ;
		1177
		1178	req->type = EIO_READDIR;
		1179	req->sv1 = newSVsv (pathname);
		1180	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1181	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1182
		1183	if (flags & EIO_READDIR_DENTS)
		1184	req->int1 |= EIO_READDIR_CUSTOM2;
		1185
		1186	REQ_SEND;
		1187	}
		1188
		1189	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1190	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1191	ALIAS:
1221	aio_unlink = REQ_UNLINK	1192	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	1193	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	1194	aio_readdir = EIO_READDIR
1224	PPCODE:	1195	PPCODE:
1225	{	1196	{
1226	dREQ;	1197	dREQ;
1227		1198
1228	req->type = ix;	1199	req->type = ix;
1229	req->data = newSVsv (pathname);	1200	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1201	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1202
1232	REQ_SEND;	1203	REQ_SEND;
1233	}	1204	}
1234		1205
1235	void	1206	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1207	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1208	ALIAS:
1241	aio_link = REQ_LINK	1209	aio_link = EIO_LINK
1242	aio_symlink = REQ_SYMLINK	1210	aio_symlink = EIO_SYMLINK
1243	aio_rename = REQ_RENAME	1211	aio_rename = EIO_RENAME
1244	PPCODE:	1212	PPCODE:
1245	{	1213	{
1246	dREQ;	1214	dREQ;
1247		1215
1248	req->type = ix;	1216	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1217	req->sv1 = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	1219	req->sv2 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1220	req->ptr2 = SvPVbyte_nolen (req->sv2);
1253		1221
1254	REQ_SEND;	1222	REQ_SEND;
1255	}	1223	}
1256		1224
1257	void	1225	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1226	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1227	PPCODE:
1262	{	1228	{
1263	dREQ;	1229	dREQ;
1264		1230
1265	req->type = REQ_SLEEP;	1231	req->type = EIO_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1232	req->sv1 = newSVsv (pathname);
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
1268		1234	req->int2 = (mode_t)mode;
		1235	req->offs = dev;
		1236
1269	REQ_SEND;	1237	REQ_SEND;
1270	}	1238	}
1271		1239
1272	void	1240	void
		1241	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1242	ALIAS:
		1243	aio_mtouch = EIO_MTOUCH
		1244	aio_msync = EIO_MSYNC
		1245	PROTOTYPE: $$$$;$
		1246	PPCODE:
		1247	{
		1248	STRLEN svlen;
		1249	UV len = SvUV (length);
		1250	char *svptr = SvPVbyte (data, svlen);
		1251
		1252	if (offset < 0)
		1253	offset += svlen;
		1254
		1255	if (offset < 0 || offset > svlen)
		1256	croak ("offset outside of scalar");
		1257
		1258	if (!SvOK (length) || len + offset > svlen)
		1259	len = svlen - offset;
		1260
		1261	{
		1262	dREQ;
		1263
		1264	req->type = ix;
		1265	req->size = len;
		1266	req->sv2 = SvREFCNT_inc (data);
		1267	req->ptr2 = (char *)svptr + offset;
		1268	req->int1 = flags;
		1269
		1270	REQ_SEND;
		1271	}
		1272	}
		1273
		1274	void
		1275	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->type = EIO_BUSY;
		1281	req->nv1 = delay < 0. ? 0. : delay;
		1282
		1283	REQ_SEND;
		1284	}
		1285
		1286	void
1273	aio_group (callback=&PL_sv_undef)	1287	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	1288	PROTOTYPE: ;$
1276	PPCODE:	1289	PPCODE:
1277	{	1290	{
1278	dREQ;	1291	dREQ;
1279		1292
1280	req->type = REQ_GROUP;	1293	req->type = EIO_GROUP;
		1294
1281	req_send (req);	1295	req_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1296	XPUSHs (req_sv (req, aio_grp_stash));
1284	}	1297	}
1285		1298
1286	void	1299	void
1287	aio_nop (callback=&PL_sv_undef)	1300	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	1301	ALIAS:
		1302	aio_nop = EIO_NOP
		1303	aio_sync = EIO_SYNC
1289	PPCODE:	1304	PPCODE:
1290	{	1305	{
1291	dREQ;	1306	dREQ;
1292		1307
1293	req->type = REQ_NOP;	1308	req->type = ix;
1294		1309
1295	REQ_SEND;	1310	REQ_SEND;
1296	}	1311	}
1297		1312
1298	#if 0	1313	int
1299		1314	aioreq_pri (int pri = 0)
1300	void	1315	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1316	CODE:
		1317	RETVAL = next_pri;
		1318	if (items > 0)
		1319	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1320	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1321	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1322	next_pri = pri;
		1323	}
		1324	OUTPUT:
		1325	RETVAL
1306		1326
1307	#endif	1327	void
		1328	aioreq_nice (int nice = 0)
		1329	CODE:
		1330	nice = next_pri - nice;
		1331	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1332	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1333	next_pri = nice;
1308		1334
1309	void	1335	void
1310	flush ()	1336	flush ()
1311	PROTOTYPE:	1337	PROTOTYPE:
1312	CODE:	1338	CODE:
1313	while (nreqs)	1339	while (eio_nreqs ())
1314	{	1340	{
1315	poll_wait ();	1341	poll_wait ();
1316	poll_cb ();	1342	poll_cb ();
1317	}	1343	}
1318		1344
1319	void	1345	int
1320	poll()	1346	poll()
1321	PROTOTYPE:	1347	PROTOTYPE:
1322	CODE:	1348	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1349	poll_wait ();
1326	poll_cb ();	1350	RETVAL = poll_cb ();
1327	}	1351	OUTPUT:
		1352	RETVAL
1328		1353
1329	int	1354	int
1330	poll_fileno()	1355	poll_fileno()
1331	PROTOTYPE:	1356	PROTOTYPE:
1332	CODE:	1357	CODE:
1333	RETVAL = respipe [0];	1358	RETVAL = s_epipe_fd (&respipe);
1334	OUTPUT:	1359	OUTPUT:
1335	RETVAL	1360	RETVAL
1336		1361
1337	int	1362	int
1338	poll_cb(...)	1363	poll_cb(...)
…		…
1344		1369
1345	void	1370	void
1346	poll_wait()	1371	poll_wait()
1347	PROTOTYPE:	1372	PROTOTYPE:
1348	CODE:	1373	CODE:
1349	if (nreqs)
1350	poll_wait ();	1374	poll_wait ();
1351		1375
1352	int	1376	int
1353	nreqs()	1377	nreqs()
1354	PROTOTYPE:	1378	PROTOTYPE:
1355	CODE:	1379	CODE:
1356	RETVAL = nreqs;	1380	RETVAL = eio_nreqs ();
1357	OUTPUT:	1381	OUTPUT:
1358	RETVAL	1382	RETVAL
1359		1383
		1384	int
		1385	nready()
		1386	PROTOTYPE:
		1387	CODE:
		1388	RETVAL = eio_nready ();
		1389	OUTPUT:
		1390	RETVAL
		1391
		1392	int
		1393	npending()
		1394	PROTOTYPE:
		1395	CODE:
		1396	RETVAL = eio_npending ();
		1397	OUTPUT:
		1398	RETVAL
		1399
		1400	int
		1401	nthreads()
		1402	PROTOTYPE:
		1403	CODE:
		1404	RETVAL = eio_nthreads ();
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1410	PROTOTYPE: $$$$
		1411	CODE:
		1412	RETVAL = posix_fadvise (fh, offset, length, advice);
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	ssize_t
		1417	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1418	PROTOTYPE: $$$$
		1419	CODE:
		1420	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void
		1425	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1426	PROTOTYPE: $$$$$;$
		1427	PPCODE:
		1428	sv_unmagic (scalar, MMAP_MAGIC);
		1429	{
		1430	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1431	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1432	if (addr == (void *)-1)
		1433	XSRETURN_NO;
		1434
		1435	sv_force_normal (scalar);
		1436
		1437	/* we store the length in mg_obj, as namlen is I32 :/ */
		1438	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1439	->mg_obj = (SV *)length;
		1440
		1441	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1442
		1443	if (!(prot & PROT_WRITE))
		1444	SvREADONLY_on (scalar);
		1445
		1446	if (SvLEN (scalar))
		1447	Safefree (SvPVX (scalar));
		1448
		1449	SvPVX (scalar) = (char *)addr;
		1450	SvCUR_set (scalar, length);
		1451	SvLEN_set (scalar, 0);
		1452	SvPOK_only (scalar);
		1453
		1454	XSRETURN_YES;
		1455	}
		1456
		1457	void
		1458	munmap (SV *scalar)
		1459	PROTOTYPE: $
		1460	CODE:
		1461	sv_unmagic (scalar, MMAP_MAGIC);
		1462
		1463	int
		1464	madvise (SV *scalar, off_t offset, off_t length, IV advice_or_prot)
		1465	ALIAS:
		1466	mprotect = 1
		1467	PROTOTYPE: $$$$
		1468	CODE:
		1469	{
		1470	STRLEN cur;
		1471	char *addr = SvPVbyte (scalar, cur);
		1472
		1473	if (offset > cur)
		1474	RETVAL = errno = EFAULT;
		1475	else
		1476	{
		1477	if (!SvOK (ST (2)))
		1478	length = cur - offset;
		1479
		1480	if (offset + length > cur)
		1481	RETVAL = errno = EFAULT;
		1482	else
		1483	switch (ix)
		1484	{
		1485	case 0: RETVAL = posix_madvise (addr + offset, length, advice_or_prot); break;
		1486	case 1: RETVAL = mprotect (addr + offset, length, advice_or_prot); break;
		1487	}
		1488	}
		1489	}
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
		1494	mlockall (int flags)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	#if _POSIX_MEMLOCK
		1498	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1499	extern int mallopt (int, int);
		1500	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1501	#endif
		1502	mlockall (flags);
		1503	#else
		1504	RETVAL = -1;
		1505	errno = ENOSYS;
		1506	#endif
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlockall ()
		1512	PROTOTYPE:
		1513	CODE:
		1514	#if _POSIX_MEMLOCK
		1515	munlockall ();
		1516	#else
		1517	RETVAL = -1;
		1518	errno = ENOSYS;
		1519	#endif
		1520	OUTPUT:
		1521	RETVAL
		1522
		1523	void _on_next_submit (SV *cb)
		1524	CODE:
		1525	SvREFCNT_dec (on_next_submit);
		1526	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1527
1360	PROTOTYPES: DISABLE	1528	PROTOTYPES: DISABLE
1361		1529
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1530	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1531
1364	void	1532	void
1365	cancel (aio_req_ornot req)	1533	cancel (aio_req_ornot req)
1366	CODE:	1534	CODE:
1367	req_cancel (req);	1535	eio_cancel (req);
1368		1536
1369	void	1537	void
1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1538	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1371	CODE:	1539	PPCODE:
		1540	{
		1541	if (GIMME_V != G_VOID)
		1542	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1543
		1544	if (items > 1)
		1545	{
		1546	SV *cb_cv =get_cb (callback);
		1547
1372	SvREFCNT_dec (req->callback);	1548	SvREFCNT_dec (req->callback);
1373	req->callback = newSVsv (callback);	1549	req->callback = SvREFCNT_inc (cb_cv);
		1550	}
		1551	}
1374		1552
1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1553	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376		1554
1377	void	1555	void
1378	add (aio_req grp, ...)	1556	add (aio_req grp, ...)
1379	PPCODE:	1557	PPCODE:
1380	{	1558	{
1381	int i;	1559	int i;
1382	aio_req req;
1383		1560
1384	if (grp->fd == 2)	1561	if (grp->int1 == 2)
1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1562	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386		1563
1387	for (i = 1; i < items; ++i )	1564	for (i = 1; i < items; ++i )
1388	{	1565	{
		1566	aio_req req;
		1567
1389	if (GIMME_V != G_VOID)	1568	if (GIMME_V != G_VOID)
1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1569	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391		1570
1392	req = SvAIO_REQ (ST (i));	1571	req = SvAIO_REQ (ST (i));
1393		1572
1394	if (req)	1573	if (req)
1395	{	1574	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	}	1575	}
1408	}	1576	}
		1577
		1578	void
		1579	cancel_subs (aio_req_ornot req)
		1580	CODE:
		1581	req_cancel_subs (req);
1409		1582
1410	void	1583	void
1411	result (aio_req grp, ...)	1584	result (aio_req grp, ...)
1412	CODE:	1585	CODE:
1413	{	1586	{
1414	int i;	1587	int i;
		1588	AV *av;
		1589
		1590	grp->errorno = errno;
		1591
1415	AV *av = newAV ();	1592	av = newAV ();
		1593	av_extend (av, items - 1);
1416		1594
1417	for (i = 1; i < items; ++i )	1595	for (i = 1; i < items; ++i )
1418	av_push (av, newSVsv (ST (i)));	1596	av_push (av, newSVsv (ST (i)));
1419		1597
1420	SvREFCNT_dec (grp->data);	1598	SvREFCNT_dec (grp->sv1);
1421	grp->data = (SV *)av;	1599	grp->sv1 = (SV *)av;
1422	}	1600	}
1423		1601
1424	void	1602	void
		1603	errno (aio_req grp, int errorno = errno)
		1604	CODE:
		1605	grp->errorno = errorno;
		1606
		1607	void
1425	feed_limit (aio_req grp, int limit)	1608	limit (aio_req grp, int limit)
1426	CODE:	1609	CODE:
1427	grp->fd2 = limit;	1610	eio_grp_limit (grp, limit);
1428	aio_grp_feed (grp);
1429		1611
1430	void	1612	void
1431	feed (aio_req grp, SV *callback=&PL_sv_undef)	1613	feed (aio_req grp, SV *callback=&PL_sv_undef)
1432	CODE:	1614	CODE:
1433	{	1615	{
1434	SvREFCNT_dec (grp->fh2);	1616	SvREFCNT_dec (grp->sv2);
1435	grp->fh2 = newSVsv (callback);	1617	grp->sv2 = newSVsv (callback);
		1618	grp->feed = aio_grp_feed;
1436		1619
1437	if (grp->fd2 <= 0)	1620	if (grp->int2 <= 0)
1438	grp->fd2 = 2;	1621	grp->int2 = 2;
1439		1622
1440	aio_grp_feed (grp);	1623	eio_grp_limit (grp, grp->int2);
1441	}	1624	}
1442		1625

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