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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.247 by root, Fri Jun 23 22:09:50 2017 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
31	# include <sys/socket.h>	86	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
		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, *aio_wd_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	SV *sv3, *sv4; \
		119	STRLEN stroffset; \
		120	SV *self;
		121
		122	#define EIO_NO_WRAPPERS 1
		123
		124	#include "libeio/config.h"
		125	#include "libeio/eio.h"
		126
		127	static int req_invoke (eio_req *req);
		128	#define EIO_FINISH(req) req_invoke (req)
		129	static void req_destroy (eio_req *grp);
		130	#define EIO_DESTROY(req) req_destroy (req)
		131
		132	#include "libeio/eio.c"
		133
		134	#if !HAVE_POSIX_FADVISE
		135	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		136	#endif
		137
		138	#if !HAVE_POSIX_MADVISE
		139	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		140	#endif
		141
		142	#ifndef MAP_ANONYMOUS
		143	# ifdef MAP_ANON
		144	# define MAP_ANONYMOUS MAP_ANON
34	# else	145	# else
35	# error sendfile support requested but not available	146	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	147	# endif
37	#endif	148	#endif
38		149
39	/* used for struct dirent, AIX doesn't provide it */	150	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	151	/* also provides const_iv_ and const_niv_ macros for them */
41	# define NAME_MAX 4096	152	#include "def0.h"
42	#endif
43		153
44	#if __ia64	154	#ifndef makedev
45	# define STACKSIZE 65536	155	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else
47	# define STACKSIZE 8192
48	#endif	156	#endif
		157	#ifndef major
		158	# define major(dev) ((dev) >> 8)
		159	#endif
		160	#ifndef minor
		161	# define minor(dev) ((dev) & 0xff)
		162	#endif
49		163
50	enum {	164	#if PAGESIZE <= 0
51	REQ_QUIT,	165	# define PAGESIZE sysconf (_SC_PAGESIZE)
52	REQ_OPEN, REQ_CLOSE,	166	#endif
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};
63		167
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	168	/*****************************************************************************/
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		169
67	typedef struct aio_cb	170	static void
		171	fiemap (eio_req *req)
68	{	172	{
69	struct aio_cb *grp, *grp_prev, *grp_next;	173	req->result = -1;
70		174
71	struct aio_cb *volatile next;	175	#if HAVE_FIEMAP
		176	/* assume some c99 */
		177	struct fiemap *fiemap = 0;
		178	size_t end_offset;
		179	int count = req->int3;
72		180
73	SV *self; /* the perl counterpart of this request, if any */	181	req->flags |= EIO_FLAG_PTR1_FREE;
74		182
75	SV *data, *callback;	183	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
76	SV *fh, *fh2;	184	/* increase in 3.5kb steps */
77	void *dataptr, *data2ptr;	185	if (count < 0)
78	Stat_t *statdata;	186	count = 8;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82		187
83	int type;	188	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
84	int fd, fd2;	189	errno = ENOMEM;
85	int errorno;	190	if (!fiemap)
86	STRLEN dataoffset;	191	return;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90		192
91	typedef aio_cb *aio_req;	193	req->ptr1 = fiemap;
92	typedef aio_cb *aio_req_ornot;
93		194
94	static int started, wanted;	195	fiemap->fm_start = req->offs;
95	static volatile int nreqs;	196	fiemap->fm_length = req->size;
96	static int max_outstanding = 1<<30;	197	fiemap->fm_flags = req->int2;
97	static int respipe [2];	198	fiemap->fm_extent_count = count;
98		199
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	200	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	201	return;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		202
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	203	if (req->int3 >= 0 /* not autosizing */
104	static volatile aio_req ress, rese; /* queue start, queue end */	204	|| !fiemap->fm_mapped_extents /* no more extents */
		205	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		206	goto done;
105		207
106	static void req_free (aio_req req);	208	/* else we have to loop -
		209	* it would be tempting (actually I tried that first) to just query the
		210	* number of extents needed, but linux often feels like not returning all
		211	* extents, without telling us it left any out. this complicates
		212	* this quite a bit.
		213	*/
107		214
108	/* must be called at most once */	215	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
109	static SV *req_sv (aio_req req, const char *klass)
110	{
111	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
113		216
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	217	for (;;)
115	}
116
117	static aio_req SvAIO_REQ (SV *sv)
118	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");
121
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123
124	return mg ? (aio_req)mg->mg_ptr : 0;
125	}
126
127	static void poll_wait ()
128	{
129	if (nreqs && !ress)
130	{	218	{
131	fd_set rfd;	219	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
132	FD_ZERO(&rfd);	220	char scratch[3072];
133	FD_SET(respipe [0], &rfd);	221	struct fiemap *incmap = (struct fiemap *)scratch;
134		222
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	223	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
136	}	224	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
137	}	225	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		226	incmap->fm_flags = fiemap->fm_flags;
		227	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
138		228
139	static void req_invoke (aio_req req)	229	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
140	{
141	dSP;
142	int errorno = errno;
143
144	if (req->cancelled || !SvOK (req->callback))
145	return;	230	return;
146		231
147	errno = req->errorno;	232	if (!incmap->fm_mapped_extents)
		233	goto done;
148		234
149	ENTER;	235	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
150	PUSHMARK (SP);	236	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
151	EXTEND (SP, 1);	237	errno = ENOMEM;
		238	if (!fiemap)
		239	return;
152		240
153	switch (req->type)	241	req->ptr1 = fiemap;
154	{	242
155	case REQ_READDIR:	243	for (count = 0; count < incmap->fm_mapped_extents; ++count)
156	{	244	{
157	SV *rv = &PL_sv_undef;	245	struct fiemap_extent *e = incmap->fm_extents + count;
158		246
159	if (req->result >= 0)	247	if (e->fe_logical + e->fe_length >= end_offset)
160	{	248	goto done;
161	char *buf = req->data2ptr;
162	AV *av = newAV ();
163		249
164	while (req->result)	250	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
165	{
166	SV *sv = newSVpv (buf, 0);
167		251
168	av_push (av, sv);	252	if (e->fe_flags & FIEMAP_EXTENT_LAST)
169	buf += SvCUR (sv) + 1;	253	goto done;
170	req->result--;
171	}
172		254
173	rv = sv_2mortal (newRV_noinc ((SV *)av));
174	}
175
176	PUSHs (rv);
177	}
178	break;
179
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
188	SPAGAIN;
189
190	fh = SvREFCNT_inc (POPs);
191
192	PUSHMARK (SP);
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_GROUP:
198	if (req->data)
199	{
200	int i;
201	AV *av = (AV *)req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}
216
217
218	PUTBACK;
219	call_sv (req->callback, G_VOID | G_EVAL);
220	SPAGAIN;
221
222	if (SvTRUE (ERRSV))
223	{
224	req_free (req);
225	croak (0);
226	}
227
228	LEAVE;
229
230	errno = errorno;
231	}
232
233	static void req_free (aio_req req)
234	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}	255	}
248	}	256	}
249		257
		258	done:
		259	req->result = 0;
		260
		261	#else
		262	errno = ENOSYS;
		263	#endif
		264	}
		265
		266	/*****************************************************************************/
		267
		268	enum {
		269	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		270	};
		271
		272	typedef eio_req *aio_req;
		273	typedef eio_req *aio_req_ornot;
		274	typedef eio_wd aio_wd;
		275
		276	static SV *on_next_submit;
		277	static int next_pri = EIO_PRI_DEFAULT;
		278	static int max_outstanding;
		279
		280	static s_epipe respipe;
		281
		282	static void req_destroy (aio_req req);
		283	static void req_cancel (aio_req req);
		284
		285	static void
		286	want_poll (void)
		287	{
		288	/* write a dummy byte to the pipe so fh becomes ready */
		289	s_epipe_signal (&respipe);
		290	}
		291
		292	static void
		293	done_poll (void)
		294	{
		295	/* read any signals sent by the worker threads */
		296	s_epipe_drain (&respipe);
		297	}
		298
		299	/* must be called at most once */
		300	static SV *
		301	req_sv (aio_req req, HV *stash)
		302	{
		303	if (!req->self)
		304	{
		305	req->self = (SV *)newHV ();
		306	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		307	}
		308
		309	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		310	}
		311
		312	static SV *
		313	newSVaio_wd (aio_wd wd)
		314	{
		315	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		316	}
		317
		318	static aio_req
		319	SvAIO_REQ (SV *sv)
		320	{
		321	MAGIC *mg;
		322
		323	if (!SvROK (sv)
		324	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		325	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		326	&& SvSTASH (SvRV (sv)) != aio_req_stash
		327	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		328	croak ("object of class IO::AIO::REQ expected");
		329
		330	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		331
		332	return mg ? (aio_req)mg->mg_ptr : 0;
		333	}
		334
		335	static aio_wd
		336	SvAIO_WD (SV *sv)
		337	{
		338	if (!SvROK (sv)
		339	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		340	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		341	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		342
		343	return (aio_wd)(long)SvIVX (SvRV (sv));
		344	}
		345
		346	static SV *
		347	newmortalFH (int fd, int flags)
		348	{
		349	if (fd < 0)
		350	return &PL_sv_undef;
		351
		352	GV *gv = (GV *)sv_newmortal ();
		353	char sym[64];
		354	int symlen;
		355
		356	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		357	gv_init (gv, aio_stash, sym, symlen, 0);
		358
		359	symlen = snprintf (
		360	sym,
		361	sizeof (sym),
		362	"%s&=%d",
		363	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		364	fd
		365	);
		366
		367	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		368	? (SV *)gv : &PL_sv_undef;
		369	}
		370
		371	static void
		372	aio_grp_feed (aio_req grp)
		373	{
		374	if (grp->sv2 && SvOK (grp->sv2))
		375	{
		376	dSP;
		377
		378	ENTER;
		379	SAVETMPS;
		380	PUSHMARK (SP);
		381	XPUSHs (req_sv (grp, aio_grp_stash));
		382	PUTBACK;
		383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		384	SPAGAIN;
		385	FREETMPS;
		386	LEAVE;
		387	}
		388	}
		389
		390	static void
		391	req_submit (eio_req *req)
		392	{
		393	eio_submit (req);
		394
		395	if (expect_false (on_next_submit))
		396	{
		397	dSP;
		398	SV *cb = sv_2mortal (on_next_submit);
		399
		400	on_next_submit = 0;
		401
		402	PUSHMARK (SP);
		403	PUTBACK;
		404	call_sv (cb, G_DISCARD | G_EVAL);
		405	}
		406	}
		407
		408	static int
		409	req_invoke (eio_req *req)
		410	{
		411	if (req->flags & FLAG_SV2_RO_OFF)
		412	SvREADONLY_off (req->sv2);
		413
		414	if (!EIO_CANCELLED (req) && req->callback)
		415	{
		416	dSP;
		417	static SV *sv_result_cache; /* caches the result integer SV */
		418	SV *sv_result;
		419
		420	ENTER;
		421	SAVETMPS;
		422	PUSHMARK (SP);
		423	EXTEND (SP, 1);
		424
		425	/* do not recreate the result IV from scratch each time */
		426	if (expect_true (sv_result_cache))
		427	{
		428	sv_result = sv_result_cache; sv_result_cache = 0;
		429	SvIV_set (sv_result, req->result);
		430	SvIOK_only (sv_result);
		431	}
		432	else
		433	{
		434	sv_result = newSViv (req->result);
		435	SvREADONLY_on (sv_result);
		436	}
		437
		438	switch (req->type)
		439	{
		440	case EIO_WD_OPEN:
		441	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		442	break;
		443
		444	case EIO_READDIR:
		445	{
		446	SV *rv = &PL_sv_undef;
		447
		448	if (req->result >= 0)
		449	{
		450	int i;
		451	char *names = (char *)req->ptr2;
		452	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		453	AV *av = newAV ();
		454
		455	av_extend (av, req->result - 1);
		456
		457	for (i = 0; i < req->result; ++i)
		458	{
		459	if (req->int1 & EIO_READDIR_DENTS)
		460	{
		461	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		462
		463	if (req->int1 & EIO_READDIR_CUSTOM2)
		464	{
		465	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		466	AV *avent = newAV ();
		467
		468	av_extend (avent, 2);
		469
		470	if (!sv_type [ent->type])
		471	{
		472	sv_type [ent->type] = newSViv (ent->type);
		473	SvREADONLY_on (sv_type [ent->type]);
		474	}
		475
		476	av_store (avent, 0, namesv);
		477	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		478	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		479
		480	av_store (av, i, newRV_noinc ((SV *)avent));
		481	}
		482	else
		483	av_store (av, i, namesv);
		484
		485	++ent;
		486	}
		487	else
		488	{
		489	SV *name = newSVpv (names, 0);
		490	av_store (av, i, name);
		491	names += SvCUR (name) + 1;
		492	}
		493	}
		494
		495	rv = sv_2mortal (newRV_noinc ((SV *)av));
		496	}
		497
		498	PUSHs (rv);
		499
		500	if (req->int1 & EIO_READDIR_CUSTOM1)
		501	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		502	}
		503	break;
		504
		505	case EIO_OPEN:
		506	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		507	break;
		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
		546	case EIO_GROUP:
		547	req->int1 = 2; /* mark group as finished */
		548
		549	if (req->sv1)
		550	{
		551	int i;
		552	AV *av = (AV *)req->sv1;
		553
		554	EXTEND (SP, AvFILL (av) + 1);
		555	for (i = 0; i <= AvFILL (av); ++i)
		556	PUSHs (*av_fetch (av, i, 0));
		557	}
		558	break;
		559
		560	case EIO_NOP:
		561	case EIO_BUSY:
		562	break;
		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
		641	default:
		642	PUSHs (sv_result);
		643	break;
		644	}
		645
		646	errno = req->errorno;
		647
		648	PUTBACK;
		649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
		656
		657	FREETMPS;
		658	LEAVE;
		659
		660	PUTBACK;
		661	}
		662
		663	return !!SvTRUE (ERRSV);
		664	}
		665
		666	static void
		667	req_destroy (aio_req req)
		668	{
250	if (req->self)	669	if (req->self)
251	{	670	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
254	}	673	}
255		674
256	if (req->data)
257	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	675	SvREFCNT_dec (req->sv1);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	676	SvREFCNT_dec (req->sv2);
264		677	SvREFCNT_dec (req->sv3);
265	if (req->statdata)	678	SvREFCNT_dec (req->sv4);
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
270		680
271	if (req->type == REQ_READDIR && req->result >= 0)
272	free (req->data2ptr);
273
274	Safefree (req);	681	free (req);
275	}	682	}
276		683
277	static void req_cancel (aio_req req)	684	static void
		685	req_cancel_subs (aio_req grp)
278	{	686	{
279	req->cancelled = 1;
280
281	if (req->type == REQ_GROUP)	687	if (grp->type != EIO_GROUP)
		688	return;
		689
		690	SvREFCNT_dec (grp->sv2);
		691	grp->sv2 = 0;
		692
		693	eio_grp_cancel (grp);
		694	}
		695
		696	static void ecb_cold
		697	create_respipe (void)
		698	{
		699	if (s_epipe_renew (&respipe))
		700	croak ("IO::AIO: unable to initialize result pipe");
		701	}
		702
		703	static void
		704	poll_wait (void)
		705	{
		706	while (eio_nreqs ())
282	{	707	{
283	aio_req sub;	708	int size;
284		709
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	710	X_LOCK (EIO_POOL->reslock);
286	req_cancel (sub);	711	size = EIO_POOL->res_queue.size;
		712	X_UNLOCK (EIO_POOL->reslock);
		713
		714	if (size)
		715	return;
		716
		717	etp_maybe_start_thread (EIO_POOL);
		718
		719	s_epipe_wait (&respipe);
287	}	720	}
288	}	721	}
289		722
290	static int poll_cb ()	723	static int
		724	poll_cb (void)
291	{	725	{
292	dSP;
293	int count = 0;
294	int do_croak = 0;
295	aio_req req;
296
297	for (;;)	726	for (;;)
298	{	727	{
299	pthread_mutex_lock (&reslock);	728	int res = eio_poll ();
300	req = ress;
301		729
302	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	#endif
		759
		760	#define MMAP_MAGIC PERL_MAGIC_ext
		761
		762	static int ecb_cold
		763	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		764	{
		765	int old_errno = errno;
		766	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		767	errno = old_errno;
		768
		769	mg->mg_obj = 0; /* just in case */
		770
		771	SvREADONLY_off (sv);
		772
		773	if (SvPVX (sv) != mg->mg_ptr)
		774	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		775
		776	SvCUR_set (sv, 0);
		777	SvPVX (sv) = 0;
		778	SvOK_off (sv);
		779
		780	return 0;
		781	}
		782
		783	static MGVTBL mmap_vtbl = {
		784	0, 0, 0, 0, mmap_free
		785	};
		786
		787	/*****************************************************************************/
		788
		789	static SV *
		790	get_cb (SV *cb_sv)
		791	{
		792	SvGETMAGIC (cb_sv);
		793	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		794	}
		795
		796	static aio_req ecb_noinline
		797	dreq (SV *callback)
		798	{
		799	SV *cb_cv;
		800	aio_req req;
		801	int req_pri = next_pri;
		802	next_pri = EIO_PRI_DEFAULT;
		803
		804	cb_cv = get_cb (callback);
		805
		806	req = calloc (sizeof (*req), 1);
		807	if (!req)
		808	croak ("out of memory during eio_req allocation");
		809
		810	req->callback = SvREFCNT_inc (cb_cv);
		811	req->pri = req_pri;
		812
		813	return req;
		814	}
		815
		816	#define dREQ \
		817	aio_req req = dreq (callback); \
		818
		819	#define REQ_SEND \
		820	PUTBACK; \
		821	req_submit (req); \
		822	SPAGAIN; \
		823	\
		824	if (GIMME_V != G_VOID) \
		825	XPUSHs (req_sv (req, aio_req_stash));
		826
		827	ecb_inline void
		828	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		829	{
		830	if (expect_false (SvROK (path)))
		831	{
		832	SV *rv = SvRV (path);
		833	SV *wdob;
		834
		835	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
303	{	836	{
304	ress = req->next;	837	path = AvARRAY (rv)[1];
		838	wdob = AvARRAY (rv)[0];
305		839
306	if (!ress)	840	if (SvOK (wdob))
307	{	841	{
308	/* read any signals sent by the worker threads */	842	*wd = SvAIO_WD (wdob);
309	char buf [32];	843	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
310	while (read (respipe [0], buf, 32) == 32)
311	;
312
313	rese = 0;
314	}	844	}
		845	else
		846	*wd = EIO_INVALID_WD;
315	}	847	}
316		848	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
317	pthread_mutex_unlock (&reslock);
318
319	if (!req)
320	break;
321
322	nreqs--;
323
324	if (req->type == REQ_QUIT)
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{	849	{
328	req->fd = 1; /* mark request as delayed */	850	*wd = (aio_wd)(long)SvIVX (rv);
329	continue;	851	*wdsv = SvREFCNT_inc_NN (rv);
		852	*ptr = ".";
		853	return; /* path set to "." */
330	}	854	}
331	else	855	else
332	{	856	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}	857	}
353		858
354	return count;	859	*pathsv = newSVsv (path);
		860	*ptr = SvPVbyte_nolen (*pathsv);
355	}	861	}
356		862
357	static void *aio_proc(void *arg);	863	static void ecb_noinline
358		864	req_set_path1 (aio_req req, SV *path)
359	static void start_thread (void)
360	{	865	{
361	sigset_t fullsigset, oldsigset;	866	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
362	pthread_t tid;
363	pthread_attr_t attr;
364
365	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368
369	sigfillset (&fullsigset);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
373	started++;
374
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
376	}	867	}
377		868
378	static void req_send (aio_req req)	869	static void ecb_noinline
		870	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
379	{	871	{
380	while (started < wanted && nreqs >= started)	872	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
381	start_thread ();
382		873
383	nreqs++;	874	switch (SvTYPE (rv))
384
385	pthread_mutex_lock (&reqlock);
386
387	req->next = 0;
388
389	if (reqe)
390	{	875	{
391	reqe->next = req;	876	case SVt_PVIO:
392	reqe = req;	877	case SVt_PVLV:
		878	case SVt_PVGV:
		879	req->type = type_fh;
		880	req->sv1 = newSVsv (fh_or_path);
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	break;
		883
		884	default:
		885	req->type = type_path;
		886	req_set_path1 (req, fh_or_path);
		887	break;
393	}	888	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}	889	}
411		890
412	static void end_thread (void)	891	XS(boot_IO__AIO) ecb_cold;
413	{
414	aio_req req;
415	Newz (0, req, 1, aio_cb);
416	req->type = REQ_QUIT;
417		892
418	req_send (req);	893	MODULE = IO::AIO PACKAGE = IO::AIO
419	}
420		894
421	static void min_parallel (int nthreads)	895	PROTOTYPES: ENABLE
422	{
423	if (wanted < nthreads)
424	wanted = nthreads;
425	}
426		896
427	static void max_parallel (int nthreads)	897	BOOT:
428	{	898	{
429	int cur = started;	899	static const struct {
		900	const char *name;
		901	IV iv;
		902	} *civ, const_iv[] = {
		903	# define const_niv(name, value) { # name, (IV) value },
		904	# define const_iv(name) { # name, (IV) name },
		905	# define const_eio(name) { # name, (IV) EIO_ ## name },
430		906
431	if (wanted > nthreads)	907	/* you have to re-run ./gendef0 after adding/removing any constants here */
432	wanted = nthreads;	908	/* the first block can be undef if missing */
		909	const_iv (ENOSYS)
		910	const_iv (EXDEV)
		911	const_iv (EBADR)
433		912
434	while (cur > wanted)	913	/* for lseek */
435	{	914	const_iv (SEEK_DATA)
436	end_thread ();	915	const_iv (SEEK_HOLE)
437	cur--;
438	}
439		916
440	while (started > wanted)	917	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
441	{	918	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
442	poll_wait ();	919	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
443	poll_cb ();	920	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
444	}	921	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
445	}	922	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
446		923
447	static void create_pipe ()	924	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
448	{	925	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
449	if (pipe (respipe))	926	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
450	croak ("unable to initialize result pipe");	927	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		928	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
451		929
452	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	930	/* the second block will be 0 when missing */
453	croak ("cannot set result pipe to nonblocking mode");	931	const_iv (O_RDONLY)
		932	const_iv (O_WRONLY)
		933	const_iv (O_RDWR)
		934	const_iv (O_CREAT)
		935	const_iv (O_TRUNC)
		936	const_iv (O_EXCL)
		937	const_iv (O_APPEND)
454		938
455	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	939	const_iv (O_ASYNC)
456	croak ("cannot set result pipe to nonblocking mode");	940	const_iv (O_DIRECT)
457	}	941	const_iv (O_NOATIME)
458		942
459	/*****************************************************************************/	943	const_iv (O_CLOEXEC)
460	/* work around various missing functions */	944	const_iv (O_NOCTTY)
		945	const_iv (O_NOFOLLOW)
		946	const_iv (O_NONBLOCK)
		947	const_iv (O_EXEC)
		948	const_iv (O_SEARCH)
		949	const_iv (O_DIRECTORY)
		950	const_iv (O_DSYNC)
		951	const_iv (O_RSYNC)
		952	const_iv (O_SYNC)
		953	const_iv (O_PATH)
		954	const_iv (O_TMPFILE)
		955	const_iv (O_TTY_INIT)
461		956
462	#if !HAVE_PREADWRITE	957	const_iv (S_IFIFO)
463	# define pread aio_pread	958	const_iv (S_IFCHR)
464	# define pwrite aio_pwrite	959	const_iv (S_IFBLK)
		960	const_iv (S_IFLNK)
		961	const_iv (S_IFREG)
		962	const_iv (S_IFDIR)
		963	const_iv (S_IFWHT)
		964	const_iv (S_IFSOCK)
		965	const_iv (S_IFMT)
465		966
466	/*	967	const_iv (ST_RDONLY)
467	* make our pread/pwrite safe against themselves, but not against	968	const_iv (ST_NOSUID)
468	* normal read/write by using a mutex. slows down execution a lot,	969	const_iv (ST_NODEV)
469	* but that's your problem, not mine.	970	const_iv (ST_NOEXEC)
470	*/	971	const_iv (ST_SYNCHRONOUS)
471	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	972	const_iv (ST_MANDLOCK)
		973	const_iv (ST_WRITE)
		974	const_iv (ST_APPEND)
		975	const_iv (ST_IMMUTABLE)
		976	const_iv (ST_NOATIME)
		977	const_iv (ST_NODIRATIME)
		978	const_iv (ST_RELATIME)
472		979
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	980	const_iv (PROT_NONE)
474	{	981	const_iv (PROT_EXEC)
475	ssize_t res;	982	const_iv (PROT_READ)
476	off_t ooffset;	983	const_iv (PROT_WRITE)
477		984
478	pthread_mutex_lock (&preadwritelock);	985	const_iv (MAP_PRIVATE)
479	ooffset = lseek (fd, 0, SEEK_CUR);	986	const_iv (MAP_SHARED)
480	lseek (fd, offset, SEEK_SET);	987	const_iv (MAP_FIXED)
481	res = read (fd, buf, count);	988	const_iv (MAP_ANONYMOUS)
482	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);
484		989
485	return res;	990	/* linuxish */
486	}	991	const_iv (MAP_LOCKED)
		992	const_iv (MAP_NORESERVE)
		993	const_iv (MAP_POPULATE)
		994	const_iv (MAP_NONBLOCK)
		995	const_iv (MAP_GROWSDOWN)
		996	const_iv (MAP_32BIT)
		997	const_iv (MAP_HUGETLB)
		998	const_iv (MAP_STACK)
487		999
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1000	const_iv (F_DUPFD_CLOEXEC)
489	{
490	ssize_t res;
491	off_t ooffset;
492		1001
493	pthread_mutex_lock (&preadwritelock);	1002	const_iv (F_OFD_GETLK)
494	ooffset = lseek (fd, 0, SEEK_CUR);	1003	const_iv (F_OFD_SETLK)
495	lseek (fd, offset, SEEK_SET);	1004	const_iv (F_OFD_GETLKW)
496	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);
499		1005
500	return res;	1006	const_iv (FIFREEZE)
501	}	1007	const_iv (FITHAW)
502	#endif	1008	const_iv (FITRIM)
		1009	const_iv (FICLONE)
		1010	const_iv (FICLONERANGE)
		1011	const_iv (FIDEDUPERANGE)
503		1012
504	#if !HAVE_FDATASYNC	1013	const_iv (FS_IOC_GETFLAGS)
505	# define fdatasync fsync	1014	const_iv (FS_IOC_SETFLAGS)
506	#endif	1015	const_iv (FS_IOC_GETVERSION)
		1016	const_iv (FS_IOC_SETVERSION)
		1017	const_iv (FS_IOC_FIEMAP)
		1018	const_iv (FS_IOC_FSGETXATTR)
		1019	const_iv (FS_IOC_FSSETXATTR)
		1020	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1021	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1022	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
507		1023
508	#if !HAVE_READAHEAD	1024	const_iv (FS_KEY_DESCRIPTOR_SIZE)
509	# define readahead aio_readahead
510		1025
511	static ssize_t readahead (int fd, off_t offset, size_t count)	1026	const_iv (FS_SECRM_FL)
512	{	1027	const_iv (FS_UNRM_FL)
513	char readahead_buf[4096];	1028	const_iv (FS_COMPR_FL)
		1029	const_iv (FS_SYNC_FL)
		1030	const_iv (FS_IMMUTABLE_FL)
		1031	const_iv (FS_APPEND_FL)
		1032	const_iv (FS_NODUMP_FL)
		1033	const_iv (FS_NOATIME_FL)
		1034	const_iv (FS_DIRTY_FL)
		1035	const_iv (FS_COMPRBLK_FL)
		1036	const_iv (FS_NOCOMP_FL)
		1037	const_iv (FS_ENCRYPT_FL)
		1038	const_iv (FS_BTREE_FL)
		1039	const_iv (FS_INDEX_FL)
		1040	const_iv (FS_JOURNAL_DATA_FL)
		1041	const_iv (FS_NOTAIL_FL)
		1042	const_iv (FS_DIRSYNC_FL)
		1043	const_iv (FS_TOPDIR_FL)
		1044	const_iv (FS_FL_USER_MODIFIABLE)
514		1045
515	while (count > 0)	1046	const_iv (FS_XFLAG_REALTIME)
516	{	1047	const_iv (FS_XFLAG_PREALLOC)
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	1048	const_iv (FS_XFLAG_IMMUTABLE)
		1049	const_iv (FS_XFLAG_APPEND)
		1050	const_iv (FS_XFLAG_SYNC)
		1051	const_iv (FS_XFLAG_NOATIME)
		1052	const_iv (FS_XFLAG_NODUMP)
		1053	const_iv (FS_XFLAG_RTINHERIT)
		1054	const_iv (FS_XFLAG_PROJINHERIT)
		1055	const_iv (FS_XFLAG_NOSYMLINKS)
		1056	const_iv (FS_XFLAG_EXTSIZE)
		1057	const_iv (FS_XFLAG_EXTSZINHERIT)
		1058	const_iv (FS_XFLAG_NODEFRAG)
		1059	const_iv (FS_XFLAG_FILESTREAM)
		1060	const_iv (FS_XFLAG_DAX)
		1061	const_iv (FS_XFLAG_HASATTR)
518		1062
519	pread (fd, readahead_buf, len, offset);	1063	const_iv (FIEMAP_FLAG_SYNC)
520	offset += len;	1064	const_iv (FIEMAP_FLAG_XATTR)
521	count -= len;	1065	const_iv (FIEMAP_FLAGS_COMPAT)
522	}	1066	const_iv (FIEMAP_EXTENT_LAST)
		1067	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1068	const_iv (FIEMAP_EXTENT_DELALLOC)
		1069	const_iv (FIEMAP_EXTENT_ENCODED)
		1070	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1071	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1072	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1073	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1074	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1075	const_iv (FIEMAP_EXTENT_MERGED)
		1076	const_iv (FIEMAP_EXTENT_SHARED)
523		1077
524	errno = 0;	1078	const_iv (SPLICE_F_MOVE)
525	}	1079	const_iv (SPLICE_F_NONBLOCK)
526	#endif	1080	const_iv (SPLICE_F_MORE)
		1081	const_iv (SPLICE_F_GIFT)
527		1082
528	#if !HAVE_READDIR_R	1083	/* these are libeio constants, and are independent of gendef0 */
529	# define readdir_r aio_readdir_r	1084	const_eio (SEEK_SET)
		1085	const_eio (SEEK_CUR)
		1086	const_eio (SEEK_END)
530		1087
531	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1088	const_eio (MCL_FUTURE)
532		1089	const_eio (MCL_CURRENT)
533	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
534	{
535	struct dirent *e;
536	int errorno;
537		1090
538	pthread_mutex_lock (&readdirlock);	1091	const_eio (MS_ASYNC)
		1092	const_eio (MS_INVALIDATE)
		1093	const_eio (MS_SYNC)
539		1094
540	e = readdir (dirp);	1095	const_eio (MT_MODIFY)
541	errorno = errno;
542		1096
543	if (e)	1097	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
544	{	1098	const_eio (SYNC_FILE_RANGE_WRITE)
545	*res = ent;	1099	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
546	strcpy (ent->d_name, e->d_name);
547	}
548	else
549	*res = 0;
550		1100
551	pthread_mutex_unlock (&readdirlock);	1101	const_eio (FALLOC_FL_KEEP_SIZE)
		1102	const_eio (FALLOC_FL_PUNCH_HOLE)
		1103	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1104	const_eio (FALLOC_FL_ZERO_RANGE)
552		1105
553	errno = errorno;	1106	const_eio (RENAME_NOREPLACE)
554	return e ? 0 : -1;	1107	const_eio (RENAME_EXCHANGE)
555	}	1108	const_eio (RENAME_WHITEOUT)
556	#endif
557		1109
558	/* sendfile always needs emulation */	1110	const_eio (READDIR_DENTS)
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	1111	const_eio (READDIR_DIRS_FIRST)
560	{	1112	const_eio (READDIR_STAT_ORDER)
561	ssize_t res;	1113	const_eio (READDIR_FOUND_UNKNOWN)
562		1114
563	if (!count)	1115	const_eio (DT_UNKNOWN)
564	return 0;	1116	const_eio (DT_FIFO)
565		1117	const_eio (DT_CHR)
566	#if HAVE_SENDFILE	1118	const_eio (DT_DIR)
567	# if __linux	1119	const_eio (DT_BLK)
568	res = sendfile (ofd, ifd, &offset, count);	1120	const_eio (DT_REG)
569		1121	const_eio (DT_LNK)
570	# elif __freebsd	1122	const_eio (DT_SOCK)
571	/*	1123	const_eio (DT_WHT)
572	* Of course, the freebsd sendfile is a dire hack with no thoughts
573	* wasted on making it similar to other I/O functions.
574	*/
575	{
576	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578
579	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
581	res = sbytes;
582	}	1124	};
583		1125
584	# elif __hpux	1126	aio_stash = gv_stashpv ("IO::AIO" , 1);
585	res = sendfile (ofd, ifd, offset, count, 0, 0);	1127	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1128	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1129	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
586		1130
587	# elif __solaris	1131	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
588	{	1132	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
589	struct sendfilevec vec;
590	size_t sbytes;
591		1133
592	vec.sfv_fd = ifd;	1134	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
593	vec.sfv_flag = 0;
594	vec.sfv_off = offset;
595	vec.sfv_len = count;
596		1135
597	res = sendfilev (ofd, &vec, 1, &sbytes);	1136	reinit ();
		1137	}
598		1138
599	if (res < 0 && sbytes)	1139	void
		1140	reinit ()
		1141	PROTOTYPE:
		1142
		1143	void
		1144	max_poll_reqs (unsigned int nreqs)
		1145	PROTOTYPE: $
		1146	CODE:
		1147	eio_set_max_poll_reqs (nreqs);
		1148
		1149	void
		1150	max_poll_time (double nseconds)
		1151	PROTOTYPE: $
		1152	CODE:
		1153	eio_set_max_poll_time (nseconds);
		1154
		1155	void
		1156	min_parallel (unsigned int nthreads)
		1157	PROTOTYPE: $
		1158	CODE:
		1159	eio_set_min_parallel (nthreads);
		1160
		1161	void
		1162	max_parallel (unsigned int nthreads)
		1163	PROTOTYPE: $
		1164	CODE:
		1165	eio_set_max_parallel (nthreads);
		1166
		1167	void
		1168	max_idle (unsigned int nthreads)
		1169	PROTOTYPE: $
		1170	CODE:
		1171	eio_set_max_idle (nthreads);
		1172
		1173	void
		1174	idle_timeout (unsigned int seconds)
		1175	PROTOTYPE: $
		1176	CODE:
		1177	eio_set_idle_timeout (seconds);
		1178
		1179	void
		1180	max_outstanding (unsigned int maxreqs)
		1181	PROTOTYPE: $
		1182	CODE:
		1183	max_outstanding = maxreqs;
		1184
		1185	void
		1186	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1187	PPCODE:
		1188	{
		1189	dREQ;
		1190
		1191	req->type = EIO_WD_OPEN;
		1192	req_set_path1 (req, pathname);
		1193
		1194	REQ_SEND;
		1195	}
		1196
		1197	void
		1198	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1199	PPCODE:
		1200	{
		1201	dREQ;
		1202
		1203	req->type = EIO_OPEN;
		1204	req_set_path1 (req, pathname);
		1205	req->int1 = flags;
		1206	req->int2 = mode;
		1207
		1208	REQ_SEND;
		1209	}
		1210
		1211	void
		1212	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1213	ALIAS:
		1214	aio_fsync = EIO_FSYNC
		1215	aio_fdatasync = EIO_FDATASYNC
		1216	aio_syncfs = EIO_SYNCFS
		1217	PPCODE:
		1218	{
		1219	int fd = s_fileno_croak (fh, 0);
		1220	dREQ;
		1221
		1222	req->type = ix;
		1223	req->sv1 = newSVsv (fh);
		1224	req->int1 = fd;
		1225
		1226	REQ_SEND;
		1227	}
		1228
		1229	void
		1230	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1231	PPCODE:
		1232	{
		1233	int fd = s_fileno_croak (fh, 0);
		1234	dREQ;
		1235
		1236	req->type = EIO_SYNC_FILE_RANGE;
		1237	req->sv1 = newSVsv (fh);
		1238	req->int1 = fd;
		1239	req->offs = offset;
600	res = sbytes;	1240	req->size = nbytes;
601	}	1241	req->int2 = flags;
602		1242
603	# endif	1243	REQ_SEND;
		1244	}
		1245
		1246	void
		1247	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1248	PPCODE:
		1249	{
		1250	int fd = s_fileno_croak (fh, 0);
		1251	dREQ;
		1252
		1253	req->type = EIO_FALLOCATE;
		1254	req->sv1 = newSVsv (fh);
		1255	req->int1 = fd;
		1256	req->int2 = mode;
		1257	req->offs = offset;
		1258	req->size = len;
		1259
		1260	REQ_SEND;
		1261	}
		1262
		1263	void
		1264	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1268	int fd = s_fileno_croak (fh, 0);
		1269	dREQ;
		1270
		1271	if (expect_false (close_fd < 0))
		1272	{
		1273	int pipefd [2];
		1274
		1275	if (
		1276	#ifdef _WIN32
		1277	_pipe (pipefd, 1, _O_BINARY) < 0
604	#else	1278	#else
605	res = -1;	1279	pipe (pipefd) < 0
606	errno = ENOSYS;	1280	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
607	#endif	1281	#endif
608		1282	|| close (pipefd [1]) < 0
609	if (res < 0
610	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
611	#if __solaris
612	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
613	#endif
614	)
615	)
616	{
617	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];
619	res = 0;
620
621	while (count)
622	{
623	ssize_t cnt;
624
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
626
627	if (cnt <= 0)
628	{	1283	)
629	if (cnt && !res) res = -1;	1284	abort (); /*D*/
630	break;
631	}
632		1285
633	cnt = write (ofd, buf, cnt);	1286	close_fd = pipefd [0];
634
635	if (cnt <= 0)
636	{
637	if (cnt && !res) res = -1;
638	break;
639	}
640
641	offset += cnt;
642	res += cnt;
643	count -= cnt;
644	}
645	}
646
647	return res;
648	}
649
650	/* read a full directory */
651	static int scandir_ (const char *path, void **namesp)
652	{
653	DIR *dirp = opendir (path);
654	union
655	{
656	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;
659	struct dirent *entp;
660	char *name, *names;
661	int memlen = 4096;
662	int memofs = 0;
663	int res = 0;
664	int errorno;
665
666	if (!dirp)
667	return -1;
668
669	names = malloc (memlen);
670
671	for (;;)
672	{
673	errno = 0, readdir_r (dirp, &u.d, &entp);
674
675	if (!entp)
676	break;
677
678	name = entp->d_name;
679
680	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
681	{
682	int len = strlen (name) + 1;
683
684	res++;
685
686	while (memofs + len > memlen)
687	{
688	memlen *= 2;
689	names = realloc (names, memlen);
690	if (!names)
691	break;
692	}
693
694	memcpy (names + memofs, name, len);
695	memofs += len;
696	}
697	}
698
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;
707	}
708
709	*namesp = (void *)names;
710	return res;
711	}
712
713	/*****************************************************************************/
714
715	static void *aio_proc (void *thr_arg)
716	{
717	aio_req req;
718	int type;
719
720	do
721	{
722	pthread_mutex_lock (&reqlock);
723
724	for (;;)
725	{
726	req = reqs;
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733
734	if (req)
735	break;
736
737	pthread_cond_wait (&reqwait, &reqlock);
738	}
739
740	pthread_mutex_unlock (&reqlock);
741
742	errno = 0; /* strictly unnecessary */
743
744	if (!req->cancelled)
745	switch (req->type)
746	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
752
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756
757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
758	case REQ_CLOSE: req->result = close (req->fd); break;
759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
768
769	case REQ_SLEEP:
770	{
771	struct timeval tv;
772
773	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;
775
776	req->result = select (0, 0, 0, 0, &tv);
777	}
778
779	case REQ_QUIT:
780	break;
781
782	default:
783	req->result = ENOSYS;
784	break;
785	}	1287	}
786		1288
787	req->errorno = errno;	1289	req->type = EIO_DUP2;
788		1290	req->int1 = close_fd;
789	pthread_mutex_lock (&reslock);	1291	req->sv2 = newSVsv (fh);
790
791	req->next = 0;	1292	req->int2 = fd;
792		1293
793	if (rese)	1294	REQ_SEND;
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);
804	}
805
806	pthread_mutex_unlock (&reslock);
807	}
808	while (type != REQ_QUIT);
809
810	return 0;
811	}	1295	}
812		1296
813	/*****************************************************************************/
814
815	static void atfork_prepare (void)
816	{
817	pthread_mutex_lock (&reqlock);
818	pthread_mutex_lock (&reslock);
819	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);
821	#endif
822	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);
824	#endif
825	}
826
827	static void atfork_parent (void)
828	{
829	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);
831	#endif
832	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);
834	#endif
835	pthread_mutex_unlock (&reslock);
836	pthread_mutex_unlock (&reqlock);
837	}
838
839	static void atfork_child (void)
840	{
841	aio_req prv;
842
843	started = 0;
844
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862
863	close (respipe [0]);
864	close (respipe [1]);
865	create_pipe ();
866
867	atfork_parent ();
868	}
869
870	#define dREQ \
871	aio_req req; \
872	\
873	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \
875	\
876	Newz (0, req, 1, aio_cb); \
877	if (!req) \
878	croak ("out of memory during aio_req allocation"); \
879	\
880	req->callback = newSVsv (callback)
881
882	#define REQ_SEND \
883	req_send (req); \
884	\
885	if (GIMME_V != G_VOID) \
886	XPUSHs (req_sv (req, AIO_REQ_KLASS));
887
888	MODULE = IO::AIO PACKAGE = IO::AIO
889
890	PROTOTYPES: ENABLE
891
892	BOOT:
893	{
894	HV *stash = gv_stashpv ("IO::AIO", 1);
895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
898
899	create_pipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}
902
903	void	1297	void
904	min_parallel (nthreads)	1298	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
905	int nthreads
906	PROTOTYPE: $
907
908	void
909	max_parallel (nthreads)
910	int nthreads
911	PROTOTYPE: $
912
913	int
914	max_outstanding (nreqs)
915	int nreqs
916	PROTOTYPE: $
917	CODE:	1299	PPCODE:
918	RETVAL = max_outstanding;
919	max_outstanding = nreqs;
920
921	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
923	SV * pathname
924	int flags
925	int mode
926	SV * callback
927	PROTOTYPE: $$$;$
928	PPCODE:
929	{	1300	{
		1301	int fd = s_fileno_croak (fh, 0);
930	dREQ;	1302	dREQ;
931		1303
932	req->type = REQ_OPEN;	1304	req->type = EIO_SEEK;
933	req->data = newSVsv (pathname);	1305	req->sv1 = newSVsv (fh);
934	req->dataptr = SvPVbyte_nolen (req->data);	1306	req->int1 = fd;
935	req->fd = flags;	1307	req->offs = SvVAL64 (offset);
936	req->mode = mode;	1308	req->int2 = whence;
937		1309
938	REQ_SEND;	1310	REQ_SEND;
939	}	1311	}
940		1312
941	void	1313	void
942	aio_close (fh,callback=&PL_sv_undef)	1314	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
943	SV * fh
944	SV * callback
945	PROTOTYPE: $;$
946	ALIAS:	1315	ALIAS:
947	aio_close = REQ_CLOSE
948	aio_fsync = REQ_FSYNC
949	aio_fdatasync = REQ_FDATASYNC
950	PPCODE:
951	{
952	dREQ;
953
954	req->type = ix;
955	req->fh = newSVsv (fh);
956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
957
958	REQ_SEND (req);
959	}
960
961	void
962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
963	SV * fh
964	UV offset
965	UV length
966	SV * data
967	UV dataoffset
968	SV * callback
969	ALIAS:
970	aio_read = REQ_READ	1316	aio_read = EIO_READ
971	aio_write = REQ_WRITE	1317	aio_write = EIO_WRITE
972	PROTOTYPE: $$$$$;$
973	PPCODE:	1318	PPCODE:
974	{	1319	{
975	aio_req req;
976	STRLEN svlen;	1320	STRLEN svlen;
		1321	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
977	char *svptr = SvPVbyte (data, svlen);	1322	char *svptr = SvPVbyte (data, svlen);
978		1323	UV len = SvUV (length);
979	SvUPGRADE (data, SVt_PV);
980	SvPOK_on (data);
981		1324
982	if (dataoffset < 0)	1325	if (dataoffset < 0)
983	dataoffset += svlen;	1326	dataoffset += svlen;
984		1327
985	if (dataoffset < 0 || dataoffset > svlen)	1328	if (dataoffset < 0 || dataoffset > svlen)
986	croak ("data offset outside of string");	1329	croak ("dataoffset outside of data scalar");
987		1330
988	if (ix == REQ_WRITE)	1331	if (ix == EIO_WRITE)
989	{	1332	{
990	/* write: check length and adjust. */	1333	/* write: check length and adjust. */
991	if (length < 0 || length + dataoffset > svlen)	1334	if (!SvOK (length) || len + dataoffset > svlen)
992	length = svlen - dataoffset;	1335	len = svlen - dataoffset;
993	}	1336	}
994	else	1337	else
995	{	1338	{
996	/* read: grow scalar as necessary */	1339	/* read: check type and grow scalar as necessary */
		1340	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
997	svptr = SvGROW (data, length + dataoffset);	1341	svptr = sv_grow (data, len + dataoffset + 1);
		1342	else if (SvCUR (data) < len + dataoffset)
		1343	croak ("length + dataoffset outside of scalar, and cannot grow");
998	}	1344	}
999
1000	if (length < 0)
1001	croak ("length must not be negative");
1002		1345
1003	{	1346	{
1004	dREQ;	1347	dREQ;
1005		1348
1006	req->type = ix;	1349	req->type = ix;
1007	req->fh = newSVsv (fh);	1350	req->sv1 = newSVsv (fh);
1008	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1351	req->int1 = fd;
1009	: IoOFP (sv_2io (fh)));	1352	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1010	req->offset = offset;	1353	req->size = len;
1011	req->length = length;
1012	req->data = SvREFCNT_inc (data);	1354	req->sv2 = SvREFCNT_inc (data);
1013	req->dataptr = (char *)svptr + dataoffset;	1355	req->ptr2 = (char *)svptr + dataoffset;
		1356	req->stroffset = dataoffset;
1014		1357
1015	if (!SvREADONLY (data))	1358	if (!SvREADONLY (data))
1016	{	1359	{
1017	SvREADONLY_on (data);	1360	SvREADONLY_on (data);
1018	req->data2ptr = (void *)data;	1361	req->flags |= FLAG_SV2_RO_OFF;
1019	}	1362	}
1020		1363
1021	REQ_SEND;	1364	REQ_SEND;
1022	}	1365	}
1023	}	1366	}
1024		1367
1025	void	1368	void
1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1369	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1027	SV * out_fh	1370	ALIAS:
1028	SV * in_fh	1371	aio_ioctl = EIO_IOCTL
1029	UV in_offset	1372	aio_fcntl = EIO_FCNTL
1030	UV length
1031	SV * callback
1032	PROTOTYPE: $$$$;$
1033	PPCODE:	1373	PPCODE:
1034	{	1374	{
1035	dREQ;	1375	int fd = s_fileno_croak (fh, 0);
		1376	char *svptr;
1036		1377
1037	req->type = REQ_SENDFILE;	1378	if (SvPOK (arg) || !SvNIOK (arg))
1038	req->fh = newSVsv (out_fh);
1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1040	req->fh2 = newSVsv (in_fh);
1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1042	req->offset = in_offset;
1043	req->length = length;
1044
1045	REQ_SEND;
1046	}
1047
1048	void
1049	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1050	SV * fh
1051	UV offset
1052	IV length
1053	SV * callback
1054	PROTOTYPE: $$$;$
1055	PPCODE:
1056	{
1057	dREQ;
1058
1059	req->type = REQ_READAHEAD;
1060	req->fh = newSVsv (fh);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1062	req->offset = offset;
1063	req->length = length;
1064
1065	REQ_SEND;
1066	}
1067
1068	void
1069	aio_stat (fh_or_path,callback=&PL_sv_undef)
1070	SV * fh_or_path
1071	SV * callback
1072	ALIAS:
1073	aio_stat = REQ_STAT
1074	aio_lstat = REQ_LSTAT
1075	PPCODE:
1076	{
1077	dREQ;
1078
1079	New (0, req->statdata, 1, Stat_t);
1080	if (!req->statdata)
1081	{	1379	{
1082	req_free (req);	1380	STRLEN svlen;
1083	croak ("out of memory during aio_req->statdata allocation");	1381	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1084	}	1382	#ifdef IOCPARM_LEN
		1383	STRLEN need = IOCPARM_LEN (request);
		1384	#else
		1385	STRLEN need = 256;
		1386	#endif
1085		1387
1086	if (SvPOK (fh_or_path))	1388	if (svlen < need)
1087	{	1389	svptr = SvGROW (arg, need);
1088	req->type = ix;
1089	req->data = newSVsv (fh_or_path);
1090	req->dataptr = SvPVbyte_nolen (req->data);
1091	}	1390	}
1092	else	1391	else
		1392	svptr = (char *)SvIV (arg);
		1393
1093	{	1394	{
		1395	dREQ;
		1396
1094	req->type = REQ_FSTAT;	1397	req->type = ix;
1095	req->fh = newSVsv (fh_or_path);	1398	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1399	req->int1 = fd;
		1400	req->int2 = (long)request;
		1401	req->sv2 = SvREFCNT_inc (arg);
		1402	req->ptr2 = svptr;
		1403
		1404	REQ_SEND;
1097	}	1405	}
		1406	}
		1407
		1408	void
		1409	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1410	ALIAS:
		1411	aio_readlink = EIO_READLINK
		1412	aio_realpath = EIO_REALPATH
		1413	PPCODE:
		1414	{
		1415	dREQ;
		1416
		1417	req->type = ix;
		1418	req_set_path1 (req, pathname);
1098		1419
1099	REQ_SEND;	1420	REQ_SEND;
1100	}	1421	}
1101		1422
1102	void	1423	void
1103	aio_unlink (pathname,callback=&PL_sv_undef)	1424	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1104	SV * pathname	1425	PPCODE:
1105	SV * callback	1426	{
		1427	int ifd = s_fileno_croak (in_fh , 0);
		1428	int ofd = s_fileno_croak (out_fh, 1);
		1429	dREQ;
		1430
		1431	req->type = EIO_SENDFILE;
		1432	req->sv1 = newSVsv (out_fh);
		1433	req->int1 = ofd;
		1434	req->sv2 = newSVsv (in_fh);
		1435	req->int2 = ifd;
		1436	req->offs = in_offset;
		1437	req->size = length;
		1438
		1439	REQ_SEND;
		1440	}
		1441
		1442	void
		1443	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1444	PPCODE:
		1445	{
		1446	int fd = s_fileno_croak (fh, 0);
		1447	dREQ;
		1448
		1449	req->type = EIO_READAHEAD;
		1450	req->sv1 = newSVsv (fh);
		1451	req->int1 = fd;
		1452	req->offs = offset;
		1453	req->size = length;
		1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
		1459	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1106	ALIAS:	1460	ALIAS:
		1461	aio_stat = EIO_STAT
		1462	aio_lstat = EIO_LSTAT
		1463	aio_statvfs = EIO_STATVFS
		1464	PPCODE:
		1465	{
		1466	dREQ;
		1467
		1468	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1469
		1470	REQ_SEND;
		1471	}
		1472
		1473	UV
		1474	major (UV dev)
		1475	ALIAS:
		1476	minor = 1
		1477	CODE:
		1478	RETVAL = ix ? minor (dev) : major (dev);
		1479	OUTPUT:
		1480	RETVAL
		1481
		1482	UV
		1483	makedev (UV maj, UV min)
		1484	CODE:
		1485	RETVAL = makedev (maj, min);
		1486	OUTPUT:
		1487	RETVAL
		1488
		1489	void
		1490	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1491	PPCODE:
		1492	{
		1493	dREQ;
		1494
		1495	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1496	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1497	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1498
		1499	REQ_SEND;
		1500	}
		1501
		1502	void
		1503	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1504	PPCODE:
		1505	{
		1506	dREQ;
		1507
		1508	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1509	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1510
		1511	REQ_SEND;
		1512	}
		1513
		1514	void
		1515	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1516	PPCODE:
		1517	{
		1518	dREQ;
		1519
		1520	req->int2 = mode;
		1521	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1522
		1523	REQ_SEND;
		1524	}
		1525
		1526	void
		1527	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1528	PPCODE:
		1529	{
		1530	dREQ;
		1531
		1532	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1533	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1534	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1535
		1536	REQ_SEND;
		1537	}
		1538
		1539	void
		1540	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1541	PPCODE:
		1542	{
		1543	dREQ;
		1544
		1545	req->type = EIO_READDIR;
		1546	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1547
		1548	if (flags & EIO_READDIR_DENTS)
		1549	req->int1 |= EIO_READDIR_CUSTOM2;
		1550
		1551	req_set_path1 (req, pathname);
		1552
		1553	REQ_SEND;
		1554	}
		1555
		1556	void
		1557	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1558	PPCODE:
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MKDIR;
		1563	req->int2 = mode;
		1564	req_set_path1 (req, pathname);
		1565
		1566	REQ_SEND;
		1567	}
		1568
		1569	void
		1570	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1571	ALIAS:
1107	aio_unlink = REQ_UNLINK	1572	aio_unlink = EIO_UNLINK
1108	aio_rmdir = REQ_RMDIR	1573	aio_rmdir = EIO_RMDIR
1109	aio_readdir = REQ_READDIR	1574	aio_readdir = EIO_READDIR
1110	PPCODE:	1575	PPCODE:
1111	{	1576	{
1112	dREQ;	1577	dREQ;
1113		1578
1114	req->type = ix;	1579	req->type = ix;
1115	req->data = newSVsv (pathname);	1580	req_set_path1 (req, pathname);
1116	req->dataptr = SvPVbyte_nolen (req->data);	1581
1117
1118	REQ_SEND;	1582	REQ_SEND;
1119	}	1583	}
1120		1584
1121	void	1585	void
1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1586	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1123	SV * oldpath
1124	SV * newpath
1125	SV * callback
1126	ALIAS:	1587	ALIAS:
1127	aio_link = REQ_LINK	1588	aio_link = EIO_LINK
1128	aio_symlink = REQ_SYMLINK	1589	aio_symlink = EIO_SYMLINK
1129	aio_rename = REQ_RENAME	1590	aio_rename = EIO_RENAME
1130	PPCODE:	1591	PPCODE:
1131	{	1592	{
		1593	eio_wd wd2 = 0;
1132	dREQ;	1594	dREQ;
1133		1595
1134	req->type = ix;	1596	req->type = ix;
1135	req->fh = newSVsv (oldpath);	1597	req_set_path1 (req, oldpath);
1136	req->data2ptr = SvPVbyte_nolen (req->fh);	1598	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1137	req->data = newSVsv (newpath);	1599	req->int3 = (long)wd2;
1138	req->dataptr = SvPVbyte_nolen (req->data);
1139		1600
1140	REQ_SEND;	1601	REQ_SEND;
1141	}	1602	}
1142		1603
1143	void	1604	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1605	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1145	double delay
1146	SV * callback
1147	PPCODE:	1606	PPCODE:
1148	{	1607	{
		1608	eio_wd wd2 = 0;
1149	dREQ;	1609	dREQ;
1150		1610
1151	req->type = REQ_SLEEP;	1611	req->type = EIO_RENAME;
1152	req->fd = delay < 0. ? 0 : delay;	1612	req_set_path1 (req, oldpath);
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1613	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1154		1614	req->int2 = flags;
		1615	req->int3 = (long)wd2;
		1616
1155	REQ_SEND;	1617	REQ_SEND;
1156	}	1618	}
1157		1619
1158	void	1620	void
1159	aio_group (callback=&PL_sv_undef)	1621	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1160	SV * callback	1622	PPCODE:
1161	PROTOTYPE: ;$	1623	{
		1624	dREQ;
		1625
		1626	req->type = EIO_MKNOD;
		1627	req->int2 = (mode_t)mode;
		1628	req->offs = dev;
		1629	req_set_path1 (req, pathname);
		1630
		1631	REQ_SEND;
		1632	}
		1633
		1634	void
		1635	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1636	ALIAS:
		1637	aio_mtouch = EIO_MTOUCH
		1638	aio_msync = EIO_MSYNC
1162	PPCODE:	1639	PPCODE:
1163	{	1640	{
		1641	STRLEN svlen;
		1642	char *svptr = SvPVbyte (data, svlen);
		1643	UV len = SvUV (length);
		1644
		1645	if (flags < 0)
		1646	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1647
		1648	if (offset < 0)
		1649	offset += svlen;
		1650
		1651	if (offset < 0 || offset > svlen)
		1652	croak ("offset outside of scalar");
		1653
		1654	if (!SvOK (length) || len + offset > svlen)
		1655	len = svlen - offset;
		1656
		1657	{
		1658	dREQ;
		1659
		1660	req->type = ix;
		1661	req->sv2 = SvREFCNT_inc (data);
		1662	req->ptr2 = (char *)svptr + offset;
		1663	req->size = len;
		1664	req->int1 = flags;
		1665
		1666	REQ_SEND;
		1667	}
		1668	}
		1669
		1670	void
		1671	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1672	PPCODE:
		1673	{
		1674	STRLEN svlen;
		1675	char *svptr = SvPVbyte (data, svlen);
		1676	UV len = SvUV (length);
		1677
		1678	if (offset < 0)
		1679	offset += svlen;
		1680
		1681	if (offset < 0 || offset > svlen)
		1682	croak ("offset outside of scalar");
		1683
		1684	if (!SvOK (length) || len + offset > svlen)
		1685	len = svlen - offset;
		1686
		1687	{
		1688	dREQ;
		1689
		1690	req->type = EIO_MLOCK;
		1691	req->sv2 = SvREFCNT_inc (data);
		1692	req->ptr2 = (char *)svptr + offset;
		1693	req->size = len;
		1694
		1695	REQ_SEND;
		1696	}
		1697	}
		1698
		1699	void
		1700	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1701	PPCODE:
		1702	{
		1703	dREQ;
		1704
		1705	req->type = EIO_MLOCKALL;
		1706	req->int1 = flags;
		1707
		1708	REQ_SEND;
		1709	}
		1710
		1711	void
		1712	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1713	PPCODE:
		1714	{
		1715	int fd = s_fileno_croak (fh, 0);
1164	dREQ;	1716	dREQ;
		1717
		1718	req->type = EIO_CUSTOM;
		1719	req->sv1 = newSVsv (fh);
		1720	req->int1 = fd;
		1721
		1722	req->feed = fiemap;
		1723	#if HAVE_FIEMAP
		1724	/* keep our fingers crossed that the next two types are 64 bit */
		1725	req->offs = start;
		1726	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1727	req->int2 = flags;
		1728	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1729	#endif
		1730
		1731	REQ_SEND;
		1732	}
		1733
		1734	void
		1735	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1736	PPCODE:
		1737	{
		1738	dREQ;
		1739
		1740	req->type = EIO_BUSY;
		1741	req->nv1 = delay < 0. ? 0. : delay;
		1742
		1743	REQ_SEND;
		1744	}
		1745
		1746	void
		1747	aio_group (SV *callback = &PL_sv_undef)
		1748	PPCODE:
		1749	{
		1750	dREQ;
		1751
1165	req->type = REQ_GROUP;	1752	req->type = EIO_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168		1753
		1754	PUTBACK;
1169	req_send (req);	1755	req_submit (req);
		1756	SPAGAIN;
		1757
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1758	XPUSHs (req_sv (req, aio_grp_stash));
1171	}	1759	}
		1760
		1761	void
		1762	aio_nop (SV *callback = &PL_sv_undef)
		1763	ALIAS:
		1764	aio_nop = EIO_NOP
		1765	aio_sync = EIO_SYNC
		1766	PPCODE:
		1767	{
		1768	dREQ;
		1769
		1770	req->type = ix;
		1771
		1772	REQ_SEND;
		1773	}
		1774
		1775	int
		1776	aioreq_pri (int pri = NO_INIT)
		1777	CODE:
		1778	RETVAL = next_pri;
		1779	if (items > 0)
		1780	{
		1781	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1782	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1783	next_pri = pri;
		1784	}
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void
		1789	aioreq_nice (int nice = 0)
		1790	CODE:
		1791	nice = next_pri - nice;
		1792	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1793	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1794	next_pri = nice;
1172		1795
1173	void	1796	void
1174	flush ()	1797	flush ()
1175	PROTOTYPE:
1176	CODE:	1798	CODE:
1177	while (nreqs)	1799	while (eio_nreqs ())
1178	{	1800	{
1179	poll_wait ();	1801	poll_wait ();
1180	poll_cb ();	1802	poll_cb ();
1181	}	1803	}
1182		1804
1183	void	1805	int
1184	poll()	1806	poll ()
1185	PROTOTYPE:
1186	CODE:	1807	CODE:
1187	if (nreqs)
1188	{
1189	poll_wait ();	1808	poll_wait ();
1190	poll_cb ();	1809	RETVAL = poll_cb ();
1191	}
1192
1193	int
1194	poll_fileno()
1195	PROTOTYPE:
1196	CODE:
1197	RETVAL = respipe [0];
1198	OUTPUT:	1810	OUTPUT:
1199	RETVAL	1811	RETVAL
1200		1812
1201	int	1813	int
		1814	poll_fileno ()
		1815	CODE:
		1816	RETVAL = s_epipe_fd (&respipe);
		1817	OUTPUT:
		1818	RETVAL
		1819
		1820	int
1202	poll_cb(...)	1821	poll_cb (...)
1203	PROTOTYPE:	1822	PROTOTYPE:
1204	CODE:	1823	CODE:
1205	RETVAL = poll_cb ();	1824	RETVAL = poll_cb ();
1206	OUTPUT:	1825	OUTPUT:
1207	RETVAL	1826	RETVAL
1208		1827
1209	void	1828	void
1210	poll_wait()	1829	poll_wait ()
1211	PROTOTYPE:
1212	CODE:	1830	CODE:
1213	if (nreqs)
1214	poll_wait ();	1831	poll_wait ();
1215		1832
1216	int	1833	int
1217	nreqs()	1834	nreqs ()
1218	PROTOTYPE:
1219	CODE:	1835	CODE:
1220	RETVAL = nreqs;	1836	RETVAL = eio_nreqs ();
1221	OUTPUT:	1837	OUTPUT:
1222	RETVAL	1838	RETVAL
1223		1839
		1840	int
		1841	nready ()
		1842	CODE:
		1843	RETVAL = eio_nready ();
		1844	OUTPUT:
		1845	RETVAL
		1846
		1847	int
		1848	npending ()
		1849	CODE:
		1850	RETVAL = eio_npending ();
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	nthreads ()
		1856	CODE:
		1857	RETVAL = eio_nthreads ();
		1858	OUTPUT:
		1859	RETVAL
		1860
		1861	int
		1862	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1863	CODE:
		1864	RETVAL = posix_fadvise (fh, offset, length, advice);
		1865	OUTPUT:
		1866	RETVAL
		1867
		1868	IV
		1869	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1870	CODE:
		1871	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1872	OUTPUT:
		1873	RETVAL
		1874
		1875	void
		1876	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1877	PPCODE:
		1878	sv_unmagic (scalar, MMAP_MAGIC);
		1879	{
		1880	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1881	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1882	if (addr == (void *)-1)
		1883	XSRETURN_NO;
		1884
		1885	sv_force_normal (scalar);
		1886
		1887	/* we store the length in mg_obj, as namlen is I32 :/ */
		1888	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1889	->mg_obj = (SV *)length;
		1890
		1891	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1892
		1893	if (!(prot & PROT_WRITE))
		1894	SvREADONLY_on (scalar);
		1895
		1896	if (SvLEN (scalar))
		1897	Safefree (SvPVX (scalar));
		1898
		1899	SvPVX (scalar) = (char *)addr;
		1900	SvCUR_set (scalar, length);
		1901	SvLEN_set (scalar, 0);
		1902	SvPOK_only (scalar);
		1903
		1904	XSRETURN_YES;
		1905	}
		1906
		1907	void
		1908	munmap (SV *scalar)
		1909	CODE:
		1910	sv_unmagic (scalar, MMAP_MAGIC);
		1911
		1912	int
		1913	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1914	ALIAS:
		1915	mprotect = 1
		1916	CODE:
		1917	{
		1918	STRLEN svlen;
		1919	void *addr = SvPVbyte (scalar, svlen);
		1920	STRLEN len = SvUV (length);
		1921
		1922	if (offset < 0)
		1923	offset += svlen;
		1924
		1925	if (offset < 0 || offset > svlen)
		1926	croak ("offset outside of scalar");
		1927
		1928	if (!SvOK (length) || len + offset > svlen)
		1929	len = svlen - offset;
		1930
		1931	addr = (void *)(((intptr_t)addr) + offset);
		1932	eio_page_align (&addr, &len);
		1933
		1934	switch (ix)
		1935	{
		1936	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1937	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1938	}
		1939	}
		1940	OUTPUT:
		1941	RETVAL
		1942
		1943	int
		1944	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1945	CODE:
		1946	{
		1947	STRLEN svlen;
		1948	void *addr = SvPVbyte (scalar, svlen);
		1949	size_t len = SvUV (length);
		1950
		1951	if (offset < 0)
		1952	offset += svlen;
		1953
		1954	if (offset < 0 || offset > svlen)
		1955	croak ("offset outside of scalar");
		1956
		1957	if (!SvOK (length) || len + offset > svlen)
		1958	len = svlen - offset;
		1959
		1960	addr = (void *)(((intptr_t)addr) + offset);
		1961	eio_page_align (&addr, &len);
		1962	#if _POSIX_MEMLOCK_RANGE
		1963	RETVAL = munlock (addr, len);
		1964	#else
		1965	RETVAL = EIO_ENOSYS ();
		1966	#endif
		1967	}
		1968	OUTPUT:
		1969	RETVAL
		1970
		1971	int
		1972	munlockall ()
		1973	CODE:
		1974	#if _POSIX_MEMLOCK
		1975	munlockall ();
		1976	#else
		1977	RETVAL = EIO_ENOSYS ();
		1978	#endif
		1979	OUTPUT:
		1980	RETVAL
		1981
		1982	int
		1983	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1984	CODE:
		1985	{
		1986	#if HAVE_LINUX_SPLICE
		1987	loff_t off_in_, off_out_;
		1988	RETVAL = splice (
		1989	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1990	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1991	length, flags
		1992	);
		1993	#else
		1994	RETVAL = EIO_ENOSYS ();
		1995	#endif
		1996	}
		1997	OUTPUT:
		1998	RETVAL
		1999
		2000	int
		2001	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2002	CODE:
		2003	#if HAVE_LINUX_SPLICE
		2004	RETVAL = tee (rfh, wfh, length, flags);
		2005	#else
		2006	RETVAL = EIO_ENOSYS ();
		2007	#endif
		2008	OUTPUT:
		2009	RETVAL
		2010
		2011	int
		2012	pipesize (aio_rfd rfh, int new_size = -1)
		2013	PROTOTYPE: $;$
		2014	CODE:
		2015	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2016	if (new_size >= 0)
		2017	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2018	else
		2019	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2020	#else
		2021	errno = ENOSYS;
		2022	RETVAL = -1;
		2023	#endif
		2024	OUTPUT:
		2025	RETVAL
		2026
		2027	void
		2028	pipe2 (int flags = 0)
		2029	PROTOTYPE: ;$
		2030	PPCODE:
		2031	{
		2032	int fd[2];
		2033	int res;
		2034
		2035	if (flags)
		2036	#if HAVE_PIPE2
		2037	res = pipe2 (fd, flags);
		2038	#else
		2039	res = (errno = ENOSYS, -1);
		2040	#endif
		2041	else
		2042	res = pipe (fd);
		2043
		2044	if (!res)
		2045	{
		2046	EXTEND (SP, 2);
		2047	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2048	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2049	}
		2050	}
		2051
		2052	void _on_next_submit (SV *cb)
		2053	CODE:
		2054	SvREFCNT_dec (on_next_submit);
		2055	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2056
1224	PROTOTYPES: DISABLE	2057	PROTOTYPES: DISABLE
1225		2058
		2059	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2060
		2061	BOOT:
		2062	{
		2063	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2064	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2065	}
		2066
		2067	void
		2068	DESTROY (SV *self)
		2069	CODE:
		2070	{
		2071	aio_wd wd = SvAIO_WD (self);
		2072	#if HAVE_AT
		2073	{
		2074	SV *callback = &PL_sv_undef;
		2075	dREQ; /* clobbers next_pri :/ */
		2076	next_pri = req->pri; /* restore next_pri */
		2077	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2078	req->type = EIO_WD_CLOSE;
		2079	req->wd = wd;
		2080	REQ_SEND;
		2081	}
		2082	#else
		2083	eio_wd_close_sync (wd);
		2084	#endif
		2085	}
		2086
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2087	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227		2088
1228	void	2089	void
1229	cancel (aio_req_ornot req)	2090	cancel (aio_req_ornot req)
1230	PROTOTYPE:
1231	CODE:	2091	CODE:
1232	req_cancel (req);	2092	eio_cancel (req);
		2093
		2094	void
		2095	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2096	PPCODE:
		2097	{
		2098	if (GIMME_V != G_VOID)
		2099	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2100
		2101	if (items > 1)
		2102	{
		2103	SV *cb_cv = get_cb (callback);
		2104
		2105	SvREFCNT_dec (req->callback);
		2106	req->callback = SvREFCNT_inc (cb_cv);
		2107	}
		2108	}
1233		2109
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2110	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		2111
1236	void	2112	void
1237	add (aio_req grp, ...)	2113	add (aio_req grp, ...)
1238	PPCODE:	2114	PPCODE:
1239	{	2115	{
1240	int i;	2116	int i;
1241		2117
		2118	if (grp->int1 == 2)
		2119	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2120
1242	for (i = 1; i < items; ++i )	2121	for (i = 1; i < items; ++i )
1243	{	2122	{
		2123	aio_req req;
		2124
1244	if (GIMME_V != G_VOID)	2125	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2126	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		2127
1247	aio_req req = SvAIO_REQ (ST (i));	2128	req = SvAIO_REQ (ST (i));
1248		2129
1249	if (req)	2130	if (req)
1250	{	2131	eio_grp_add (grp, req);
1251	req->grp_prev = grp;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;
1257	}
1258	}	2132	}
1259	}	2133	}
1260		2134
1261	void	2135	void
		2136	cancel_subs (aio_req_ornot req)
		2137	CODE:
		2138	req_cancel_subs (req);
		2139
		2140	void
1262	result (aio_req grp, ...)	2141	result (aio_req grp, ...)
		2142	CODE:
		2143	{
		2144	int i;
		2145	AV *av;
		2146
		2147	grp->errorno = errno;
		2148
		2149	av = newAV ();
		2150	av_extend (av, items - 1);
		2151
		2152	for (i = 1; i < items; ++i )
		2153	av_push (av, newSVsv (ST (i)));
		2154
		2155	SvREFCNT_dec (grp->sv1);
		2156	grp->sv1 = (SV *)av;
		2157	}
		2158
		2159	void
		2160	errno (aio_req grp, int errorno = errno)
		2161	CODE:
		2162	grp->errorno = errorno;
		2163
		2164	void
		2165	limit (aio_req grp, int limit)
1263	CODE:	2166	CODE:
1264	{	2167	eio_grp_limit (grp, limit);
1265	int i;
1266	AV *av = newAV ();
1267		2168
1268	if (grp->data)	2169	void
		2170	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2171	CODE:
		2172	{
1269	SvREFCNT_dec (grp->data);	2173	SvREFCNT_dec (grp->sv2);
		2174	grp->sv2 = newSVsv (callback);
		2175	grp->feed = aio_grp_feed;
1270		2176
1271	for (i = 1; i < items; ++i )	2177	if (grp->int2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	2178	grp->int2 = 2;
1273		2179
1274	grp->data = (SV *)av;	2180	eio_grp_limit (grp, grp->int2);
1275	}	2181	}
1276		2182

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