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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.69 by root, Tue Oct 24 11:57:30 2006 UTC vs.
Revision 1.215 by root, Sun Jun 17 17:07:25 2012 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>
23	#include <limits.h>	16	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	17	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	18	#include <sched.h>
28		19
29	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
30	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
31	# include <sys/sendfile.h>	82	#include <sys/select.h>
32	# elif __freebsd	83	#include <unistd.h>
33	# include <sys/socket.h>	84	#include <utime.h>
34	# include <sys/uio.h>	85	#include <signal.h>
35	# elif __hpux	86
36	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
37	# elif __solaris /* not yet */	88
38	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
39	# else	140	# else
40	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	142	# endif
42	#endif	143	#endif
43		144
44	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
45	#ifndef NAME_MAX	146	#include "def0.h"
46	# define NAME_MAX 4096
47	#endif
48		147
49	#if __ia64	148	#ifndef makedev
50	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	150	#endif
52	# define STACKSIZE PTHREAD_STACK_MIN	151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
53	#else	215	#else
54	# define STACKSIZE 16384	216	errno = ENOSYS;
55	#endif	217	#endif
		218	}
56		219
57	/* buffer size for various temporary buffers */	220	/*****************************************************************************/
58	#define AIO_BUFSIZE 65536
59
60	#define dBUF \
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64
65	#define fBUF free (aio_buf)
66		221
67	enum {	222	enum {
68	REQ_QUIT,	223	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_BUSY,
79	};	224	};
80		225
81	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83
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;	226	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
115		229
116	enum {	230	static SV *on_next_submit;
117	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};
124
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126
127	static int started, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;	232	static int max_outstanding;
130	static int respipe [2];
131		233
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	234	static s_epipe respipe;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137		235
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	236	static void req_destroy (aio_req req);
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141
142	/*
143	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.
146	*/
147	typedef struct {
148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149	int size;
150	} reqq;
151
152	static reqq req_queue;
153	static reqq res_queue;
154
155	int reqq_push (reqq *q, aio_req req)
156	{
157	int pri = req->pri;
158	req->next = 0;
159
160	if (q->qe[pri])
161	{
162	q->qe[pri]->next = req;
163	q->qe[pri] = req;
164	}
165	else
166	q->qe[pri] = q->qs[pri] = req;
167
168	return q->size++;
169	}
170
171	aio_req reqq_shift (reqq *q)
172	{
173	int pri;
174
175	if (!q->size)
176	return 0;
177
178	--q->size;
179
180	for (pri = NUM_PRI; pri--; )
181	{
182	aio_req req = q->qs[pri];
183
184	if (req)
185	{
186	if (!(q->qs[pri] = req->next))
187	q->qe[pri] = 0;
188
189	return req;
190	}
191	}
192
193	abort ();
194	}
195
196	static void req_invoke (aio_req req);	237	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
198		252
199	/* must be called at most once */	253	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
201	{	256	{
202	if (!req->self)	257	if (!req->self)
203	{	258	{
204	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206	}	261	}
207		262
208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209	}	264	}
210		265
211	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
212	{	274	{
213	MAGIC *mg;	275	MAGIC *mg;
214		276
215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
216	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
217		283
218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219		285
220	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	287	}
222		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
223	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
224	{	302	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
226	{	304	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	305	dSP;
232		306
233	ENTER;	307	ENTER;
234	SAVETMPS;	308	SAVETMPS;
235	PUSHMARK (SP);	309	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
237	PUTBACK;	311	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	313	SPAGAIN;
240	FREETMPS;	314	FREETMPS;
241	LEAVE;	315	LEAVE;
242	}
243
244	/* stop if no progress has been made */
245	if (old_len == grp->length)
246	{
247	SvREFCNT_dec (grp->fh2);
248	grp->fh2 = 0;
249	break;
250	}
251	}	316	}
252	}	317	}
253		318
254	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
255	{	321	{
256	--grp->length;	322	eio_submit (req);
257		323
258	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	325	{
264	req_invoke (grp);	326	dSP;
265	req_free (grp);	327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
266	}	334	}
267	}	335	}
268		336
269	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
270	{	339	{
271	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
272		342
273	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
274	{	344	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)
295	{
296	dSP;	345	dSP;
297		346	static SV *sv_result_cache; /* caches the result integer SV */
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	347	SV *sv_result;
299	{
300	errno = req->errorno;
301		348
302	ENTER;	349	ENTER;
303	SAVETMPS;	350	SAVETMPS;
304	PUSHMARK (SP);	351	PUSHMARK (SP);
305	EXTEND (SP, 1);	352	EXTEND (SP, 1);
306		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	SvIOK_only (sv_result);
		360	}
		361	else
		362	{
		363	sv_result = newSViv (req->result);
		364	SvREADONLY_on (sv_result);
		365	}
		366
307	switch (req->type)	367	switch (req->type)
308	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
309	case REQ_READDIR:	373	case EIO_READDIR:
310	{	374	{
311	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
312		376
313	if (req->result >= 0)	377	if (req->result >= 0)
314	{	378	{
		379	int i;
315	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	382	AV *av = newAV ();
317		383
318	while (req->result)	384	av_extend (av, req->result - 1);
		385
		386	for (i = 0; i < req->result; ++i)
319	{	387	{
		388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
		412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
320	SV *sv = newSVpv (buf, 0);	418	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	419	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
324	req->result--;	421	}
325	}	422	}
326		423
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	425	}
329		426
330	PUSHs (rv);	427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	431	}
332	break;	432	break;
333		433
334	case REQ_OPEN:	434	case EIO_OPEN:
335	{	435	{
336	/* convert fd to fh */	436	/* convert fd to fh */
337	SV *fh;	437	SV *fh = &PL_sv_undef;
338		438
339	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
340	PUTBACK;	440	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
343		448
344	fh = SvREFCNT_inc (POPs);	449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
345		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
346	PUSHMARK (SP);	461	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	462	}
349	break;	463	break;
350		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
351	case REQ_GROUP:	497	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
353		499
354	if (req->data)	500	if (req->sv1)
355	{	501	{
356	int i;	502	int i;
357	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
358		504
359	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
362	}	508	}
363	break;	509	break;
364		510
365	case REQ_NOP:	511	case EIO_NOP:
366	case REQ_BUSY:	512	case EIO_BUSY:
367	break;	513	break;
368		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		588	if (req->result > 0)
		589	SvIV_set (sv_result, 0);
		590	/* FALLTHROUGH */
		591
369	default:	592	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
371	break;	594	break;
372	}	595	}
373		596
		597	errno = req->errorno;
374		598
375	PUTBACK;	599	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	601	SPAGAIN;
		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
378		607
379	FREETMPS;	608	FREETMPS;
380	LEAVE;	609	LEAVE;
		610
		611	PUTBACK;
381	}	612	}
382		613
383	if (req->grp)	614	return !!SvTRUE (ERRSV);
384	{
385	aio_req grp = req->grp;
386
387	/* unlink request */
388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
390
391	if (grp->grp_first == req)
392	grp->grp_first = req->grp_next;
393
394	aio_grp_dec (grp);
395	}
396
397	if (SvTRUE (ERRSV))
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	615	}
403		616
404	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
405	{	619	{
406	if (req->self)	620	if (req->self)
407	{	621	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
410	}	624	}
411		625
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
415	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		631
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420
421	Safefree (req);	632	free (req);
422	}	633	}
423		634
424	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
425	{	637	{
426	req->flags |= FLAG_CANCELLED;
427
428	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
429	{	658	{
430	aio_req sub;	659	int size;
431		660
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	661	X_LOCK (reslock);
433	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
434	}	671	}
435	}	672	}
436		673
437	static int poll_cb ()	674	static int
		675	poll_cb (void)
438	{	676	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	677	for (;;)
445	{	678	{
446	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		680
449	if (req)	681	if (res > 0)
		682	croak (0);
		683
		684	if (!max_outstanding || max_outstanding > eio_nreqs ())
		685	return res;
		686
		687	poll_wait ();
		688	}
		689	}
		690
		691	static void ecb_cold
		692	reinit (void)
		693	{
		694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
		698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		704	# define munmap(addr,length) EIO_ENOSYS ()
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
		744
		745	static SV *
		746	get_cb (SV *cb_sv)
		747	{
		748	SvGETMAGIC (cb_sv);
		749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		750	}
		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
		772	#define dREQ \
		773	aio_req req = dreq (callback); \
		774
		775	#define REQ_SEND \
		776	PUTBACK; \
		777	req_submit (req); \
		778	SPAGAIN; \
		779	\
		780	if (GIMME_V != G_VOID) \
		781	XPUSHs (req_sv (req, aio_req_stash));
		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
450	{	792	{
451	if (!res_queue.size)	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
		795
		796	if (SvOK (wdob))
452	{	797	{
453	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
454	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
458	}	803	}
459		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
460	pthread_mutex_unlock (&reslock);
461
462	if (!req)
463	break;
464
465	--nreqs;
466
467	if (req->type == REQ_QUIT)
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{	805	{
471	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
472	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
473	}	810	}
474	else	811	else
475	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	813	}
496		814
497	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
498	}	817	}
499		818
500	static void *aio_proc(void *arg);	819	static void ecb_noinline
501		820	req_set_path1 (aio_req req, SV *path)
502	static void start_thread (void)
503	{	821	{
504	sigset_t fullsigset, oldsigset;	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
505	pthread_t tid;
506	pthread_attr_t attr;
507
508	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}	823	}
520		824
521	static void req_send (aio_req req)	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
522	{	827	{
523	while (started < wanted && nreqs >= started)	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
524	start_thread ();
525		829
526	++nreqs;	830	switch (SvTYPE (rv))
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{	831	{
572	end_thread ();	832	case SVt_PVIO:
573	cur--;	833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
574	}	844	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}	845	}
582		846
583	static void create_pipe ()	847	XS(boot_IO__AIO) ecb_cold;
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587		848
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	849	MODULE = IO::AIO PACKAGE = IO::AIO
589	croak ("cannot set result pipe to nonblocking mode");
590		850
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	851	PROTOTYPES: ENABLE
592	croak ("cannot set result pipe to nonblocking mode");
593	}
594		852
595	/*****************************************************************************/	853	BOOT:
596	/* work around various missing functions */
597
598	#if !HAVE_PREADWRITE
599	# define pread aio_pread
600	# define pwrite aio_pwrite
601
602	/*
603	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.
606	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
608
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{	854	{
611	ssize_t res;	855	static const struct {
612	off_t ooffset;	856	const char *name;
		857	IV iv;
		858	} *civ, const_iv[] = {
		859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
		861	# define const_eio(name) { # name, (IV) EIO_ ## name },
613		862
614	pthread_mutex_lock (&preadwritelock);	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
615	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);
620		864
621	return res;	865	const_iv (ENOSYS)
622	}	866	const_iv (EXDEV)
		867	const_iv (EBADR)
623		868
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	869	const_iv (O_RDONLY)
625	{	870	const_iv (O_WRONLY)
626	ssize_t res;	871	const_iv (O_RDWR)
627	off_t ooffset;	872	const_iv (O_CREAT)
		873	const_iv (O_TRUNC)
		874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
628		876
629	pthread_mutex_lock (&preadwritelock);	877	const_iv (O_ASYNC)
630	ooffset = lseek (fd, 0, SEEK_CUR);	878	const_iv (O_DIRECT)
631	lseek (fd, offset, SEEK_SET);	879	const_iv (O_NOATIME)
632	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);
635		880
636	return res;	881	const_iv (O_CLOEXEC)
637	}	882	const_iv (O_NOCTTY)
638	#endif	883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
639		892
640	#if !HAVE_FDATASYNC	893	const_iv (S_IFIFO)
641	# define fdatasync fsync	894	const_iv (S_IFCHR)
642	#endif	895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
643		902
644	#if !HAVE_READAHEAD	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
645	# define readahead aio_readahead	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
646		909
647	static ssize_t readahead (int fd, off_t offset, size_t count)	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
648	{	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
649	dBUF;	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
650		915
651	while (count > 0)	916	const_iv (ST_RDONLY)
652	{	917	const_iv (ST_NOSUID)
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	918	const_iv (ST_NODEV)
		919	const_iv (ST_NOEXEC)
		920	const_iv (ST_SYNCHRONOUS)
		921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
654		928
655	pread (fd, aio_buf, len, offset);	929	const_iv (PROT_NONE)
656	offset += len;	930	const_iv (PROT_EXEC)
657	count -= len;	931	const_iv (PROT_READ)
658	}	932	const_iv (PROT_WRITE)
659		933
660	fBUF;	934	/*const_iv (MAP_FIXED)*/
		935	const_iv (MAP_PRIVATE)
		936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
661		938
662	errno = 0;	939	/* linuxish */
663	}	940	const_iv (MAP_HUGETLB)
664	#endif	941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
665		945
666	#if !HAVE_READDIR_R	946	const_iv (FIEMAP_FLAG_SYNC)
667	# define readdir_r aio_readdir_r	947	const_iv (FIEMAP_FLAG_XATTR)
		948	const_iv (FIEMAP_FLAGS_COMPAT)
		949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
668		960
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	961	const_iv (SPLICE_F_MOVE)
670		962	const_iv (SPLICE_F_NONBLOCK)
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	963	const_iv (SPLICE_F_MORE)
672	{	964	const_iv (SPLICE_F_GIFT)
673	struct dirent *e;
674	int errorno;
675		965
676	pthread_mutex_lock (&readdirlock);	966	const_iv (SEEK_DATA)
		967	const_iv (SEEK_HOLE)
677		968
678	e = readdir (dirp);	969	/* libeio constants */
679	errorno = errno;	970	const_eio (SEEK_SET)
		971	const_eio (SEEK_CUR)
		972	const_eio (SEEK_END)
680		973
681	if (e)	974	const_eio (MCL_FUTURE)
682	{	975	const_eio (MCL_CURRENT)
683	*res = ent;
684	strcpy (ent->d_name, e->d_name);
685	}
686	else
687	*res = 0;
688		976
689	pthread_mutex_unlock (&readdirlock);	977	const_eio (MS_ASYNC)
		978	const_eio (MS_INVALIDATE)
		979	const_eio (MS_SYNC)
690		980
691	errno = errorno;	981	const_eio (MT_MODIFY)
692	return e ? 0 : -1;
693	}
694	#endif
695		982
696	/* sendfile always needs emulation */	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	984	const_eio (SYNC_FILE_RANGE_WRITE)
698	{	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
699	ssize_t res;
700		986
701	if (!count)	987	const_eio (FALLOC_FL_KEEP_SIZE)
702	return 0;
703		988
704	#if HAVE_SENDFILE	989	const_eio (READDIR_DENTS)
705	# if __linux	990	const_eio (READDIR_DIRS_FIRST)
706	res = sendfile (ofd, ifd, &offset, count);	991	const_eio (READDIR_STAT_ORDER)
		992	const_eio (READDIR_FOUND_UNKNOWN)
707		993
708	# elif __freebsd	994	const_eio (DT_UNKNOWN)
709	/*	995	const_eio (DT_FIFO)
710	* Of course, the freebsd sendfile is a dire hack with no thoughts	996	const_eio (DT_CHR)
711	* wasted on making it similar to other I/O functions.	997	const_eio (DT_DIR)
712	*/	998	const_eio (DT_BLK)
713	{	999	const_eio (DT_REG)
714	off_t sbytes;	1000	const_eio (DT_LNK)
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1001	const_eio (DT_SOCK)
716		1002	const_eio (DT_WHT)
717	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
719	res = sbytes;
720	}	1003	};
721		1004
722	# elif __hpux	1005	aio_stash = gv_stashpv ("IO::AIO" , 1);
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	1006	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1007	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1008	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
724		1009
725	# elif __solaris	1010	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
726	{	1011	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
727	struct sendfilevec vec;
728	size_t sbytes;
729		1012
730	vec.sfv_fd = ifd;	1013	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734		1014
735	res = sendfilev (ofd, &vec, 1, &sbytes);	1015	reinit ();
		1016	}
736		1017
737	if (res < 0 && sbytes)	1018	void
		1019	reinit ()
		1020	PROTOTYPE:
		1021
		1022	void
		1023	max_poll_reqs (unsigned int nreqs)
		1024	PROTOTYPE: $
		1025	CODE:
		1026	eio_set_max_poll_reqs (nreqs);
		1027
		1028	void
		1029	max_poll_time (double nseconds)
		1030	PROTOTYPE: $
		1031	CODE:
		1032	eio_set_max_poll_time (nseconds);
		1033
		1034	void
		1035	min_parallel (unsigned int nthreads)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_min_parallel (nthreads);
		1039
		1040	void
		1041	max_parallel (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_parallel (nthreads);
		1045
		1046	void
		1047	max_idle (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_max_idle (nthreads);
		1051
		1052	void
		1053	idle_timeout (unsigned int seconds)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_idle_timeout (seconds);
		1057
		1058	void
		1059	max_outstanding (unsigned int maxreqs)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	max_outstanding = maxreqs;
		1063
		1064	void
		1065	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1066	PPCODE:
		1067	{
		1068	dREQ;
		1069
		1070	req->type = EIO_WD_OPEN;
		1071	req_set_path1 (req, pathname);
		1072
		1073	REQ_SEND;
		1074	}
		1075
		1076	void
		1077	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_OPEN;
		1083	req_set_path1 (req, pathname);
		1084	req->int1 = flags;
		1085	req->int2 = mode;
		1086
		1087	REQ_SEND;
		1088	}
		1089
		1090	void
		1091	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_fsync = EIO_FSYNC
		1094	aio_fdatasync = EIO_FDATASYNC
		1095	aio_syncfs = EIO_SYNCFS
		1096	PPCODE:
		1097	{
		1098	int fd = s_fileno_croak (fh, 0);
		1099	dREQ;
		1100
		1101	req->type = ix;
		1102	req->sv1 = newSVsv (fh);
		1103	req->int1 = fd;
		1104
		1105	REQ_SEND;
		1106	}
		1107
		1108	void
		1109	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_SYNC_FILE_RANGE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->offs = offset;
738	res = sbytes;	1119	req->size = nbytes;
739	}	1120	req->int2 = flags;
740		1121
741	# endif	1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	int fd = s_fileno_croak (fh, 0);
		1130	dREQ;
		1131
		1132	req->type = EIO_FALLOCATE;
		1133	req->sv1 = newSVsv (fh);
		1134	req->int1 = fd;
		1135	req->int2 = mode;
		1136	req->offs = offset;
		1137	req->size = len;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1144	PPCODE:
		1145	{
		1146	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1147	int fd = s_fileno_croak (fh, 0);
		1148	dREQ;
		1149
		1150	if (expect_false (close_fd < 0))
		1151	{
		1152	int pipefd [2];
		1153
		1154	if (
		1155	#ifdef _WIN32
		1156	_pipe (pipefd, 1, _O_BINARY) < 0
742	#else	1157	#else
743	res = -1;	1158	pipe (pipefd) < 0
744	errno = ENOSYS;	1159	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
745	#endif	1160	#endif
746		1161	|| close (pipefd [1]) < 0
747	if (res < 0
748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
749	#if __solaris
750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
751	#endif
752	)
753	)
754	{
755	/* emulate sendfile. this is a major pain in the ass */
756	dBUF;
757
758	res = 0;
759
760	while (count)
761	{
762	ssize_t cnt;
763
764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
765
766	if (cnt <= 0)
767	{	1162	)
768	if (cnt && !res) res = -1;	1163	abort (); /*D*/
769	break;
770	}
771		1164
772	cnt = write (ofd, aio_buf, cnt);	1165	close_fd = pipefd [0];
773
774	if (cnt <= 0)
775	{
776	if (cnt && !res) res = -1;
777	break;
778	}
779
780	offset += cnt;
781	res += cnt;
782	count -= cnt;
783	}
784
785	fBUF;
786	}
787
788	return res;
789	}
790
791	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)
793	{
794	DIR *dirp;
795	union
796	{
797	struct dirent d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
799	} *u;
800	struct dirent *entp;
801	char *name, *names;
802	int memlen = 4096;
803	int memofs = 0;
804	int res = 0;
805	int errorno;
806
807	dirp = opendir (path);
808	if (!dirp)
809	return -1;
810
811	u = malloc (sizeof (*u));
812	names = malloc (memlen);
813
814	if (u && names)
815	for (;;)
816	{
817	errno = 0;
818	readdir_r (dirp, &u->d, &entp);
819
820	if (!entp)
821	break;
822
823	name = entp->d_name;
824
825	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
826	{
827	int len = strlen (name) + 1;
828
829	res++;
830
831	while (memofs + len > memlen)
832	{
833	memlen *= 2;
834	names = realloc (names, memlen);
835	if (!names)
836	break;
837	}
838
839	memcpy (names + memofs, name, len);
840	memofs += len;
841	}	1166	}
842	}
843		1167
844	errorno = errno;	1168	req->type = EIO_DUP2;
845	free (u);	1169	req->int1 = close_fd;
846	closedir (dirp);	1170	req->sv2 = newSVsv (fh);
		1171	req->int2 = fd;
847		1172
848	if (errorno)	1173	REQ_SEND;
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854
855	*namesp = (void *)names;
856	return res;
857	}	1174	}
858		1175
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869
870	for (;;)
871	{
872	req = reqq_shift (&req_queue);
873
874	if (req)
875	break;
876
877	pthread_cond_wait (&reqwait, &reqlock);
878	}
879
880	pthread_mutex_unlock (&reqlock);
881
882	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884
885	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)
887	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
890
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
893
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
897
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
905
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
909
910	case REQ_BUSY:
911	{
912	struct timeval tv;
913
914	tv.tv_sec = req->fd;
915	tv.tv_usec = req->fd2;
916
917	req->result = select (0, 0, 0, 0, &tv);
918	}
919
920	case REQ_GROUP:
921	case REQ_NOP:
922	case REQ_QUIT:
923	break;
924
925	default:
926	req->result = ENOSYS;
927	break;
928	}
929
930	req->errorno = errno;
931
932	pthread_mutex_lock (&reslock);
933
934	if (!reqq_push (&res_queue, req))
935	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);
937
938	pthread_mutex_unlock (&reslock);
939	}
940	while (type != REQ_QUIT);
941
942	return 0;
943	}
944
945	/*****************************************************************************/
946
947	static void atfork_prepare (void)
948	{
949	pthread_mutex_lock (&reqlock);
950	pthread_mutex_lock (&reslock);
951	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);
953	#endif
954	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);
956	#endif
957	}
958
959	static void atfork_parent (void)
960	{
961	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);
963	#endif
964	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);
966	#endif
967	pthread_mutex_unlock (&reslock);
968	pthread_mutex_unlock (&reqlock);
969	}
970
971	static void atfork_child (void)
972	{
973	aio_req prv;
974
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))
978	req_free (prv);
979
980	while (prv = reqq_shift (&res_queue))
981	req_free (prv);
982
983	close (respipe [0]);
984	close (respipe [1]);
985	create_pipe ();
986
987	atfork_parent ();
988	}
989
990	#define dREQ \
991	aio_req req; \
992	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \
994	\
995	if (SvOK (callback) && !SvROK (callback)) \
996	croak ("callback must be undef or of reference type"); \
997	\
998	Newz (0, req, 1, aio_cb); \
999	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \
1001	\
1002	req->callback = newSVsv (callback); \
1003	req->pri = req_pri
1004
1005	#define REQ_SEND \
1006	req_send (req); \
1007	\
1008	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010
1011	MODULE = IO::AIO PACKAGE = IO::AIO
1012
1013	PROTOTYPES: ENABLE
1014
1015	BOOT:
1016	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1021
1022	create_pipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}
1025
1026	void	1176	void
1027	min_parallel (nthreads)	1177	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1028	int nthreads
1029	PROTOTYPE: $
1030
1031	void
1032	max_parallel (nthreads)
1033	int nthreads
1034	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	1178	PPCODE:
1041	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;
1043
1044	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$
1051	PPCODE:
1052	{	1179	{
		1180	int fd = s_fileno_croak (fh, 0);
1053	dREQ;	1181	dREQ;
1054		1182
1055	req->type = REQ_OPEN;	1183	req->type = EIO_SEEK;
1056	req->data = newSVsv (pathname);	1184	req->sv1 = newSVsv (fh);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1185	req->int1 = fd;
1058	req->fd = flags;	1186	req->offs = SvVAL64 (offset);
1059	req->mode = mode;	1187	req->int2 = whence;
1060		1188
1061	REQ_SEND;	1189	REQ_SEND;
1062	}	1190	}
1063		1191
1064	void	1192	void
1065	aio_close (fh,callback=&PL_sv_undef)	1193	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$
1069	ALIAS:	1194	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:
1074	{
1075	dREQ;
1076
1077	req->type = ix;
1078	req->fh = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080
1081	REQ_SEND (req);
1082	}
1083
1084	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:
1093	aio_read = REQ_READ	1195	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	1196	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$
1096	PPCODE:	1197	PPCODE:
1097	{	1198	{
1098	aio_req req;
1099	STRLEN svlen;	1199	STRLEN svlen;
		1200	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	1201	char *svptr = SvPVbyte (data, svlen);
1101		1202	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		1203
1105	if (dataoffset < 0)	1204	if (dataoffset < 0)
1106	dataoffset += svlen;	1205	dataoffset += svlen;
1107		1206
1108	if (dataoffset < 0 || dataoffset > svlen)	1207	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	1208	croak ("dataoffset outside of data scalar");
1110		1209
1111	if (ix == REQ_WRITE)	1210	if (ix == EIO_WRITE)
1112	{	1211	{
1113	/* write: check length and adjust. */	1212	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1213	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1214	len = svlen - dataoffset;
1116	}	1215	}
1117	else	1216	else
1118	{	1217	{
1119	/* read: grow scalar as necessary */	1218	/* read: check type and grow scalar as necessary */
		1219	SvUPGRADE (data, SVt_PV);
		1220	if (SvLEN (data) >= SvCUR (data))
1120	svptr = SvGROW (data, length + dataoffset);	1221	svptr = SvGROW (data, len + dataoffset + 1);
		1222	else if (SvCUR (data) < len + dataoffset)
		1223	croak ("length + dataoffset outside of scalar, and cannot grow");
1121	}	1224	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		1225
1126	{	1226	{
1127	dREQ;	1227	dREQ;
1128		1228
1129	req->type = ix;	1229	req->type = ix;
1130	req->fh = newSVsv (fh);	1230	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1231	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	1232	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1233	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1234	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1235	req->ptr2 = (char *)svptr + dataoffset;
		1236	req->stroffset = dataoffset;
1137		1237
1138	if (!SvREADONLY (data))	1238	if (!SvREADONLY (data))
1139	{	1239	{
1140	SvREADONLY_on (data);	1240	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1241	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1242	}
1143		1243
1144	REQ_SEND;	1244	REQ_SEND;
1145	}	1245	}
1146	}	1246	}
1147		1247
1148	void	1248	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1249	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * out_fh	1250	ALIAS:
1151	SV * in_fh	1251	aio_readlink = EIO_READLINK
1152	UV in_offset	1252	aio_realpath = EIO_REALPATH
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$
1156	PPCODE:	1253	PPCODE:
1157	{	1254	{
		1255	dREQ;
		1256
		1257	req->type = ix;
		1258	req_set_path1 (req, pathname);
		1259
		1260	REQ_SEND;
		1261	}
		1262
		1263	void
		1264	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	int ifd = s_fileno_croak (in_fh , 0);
		1268	int ofd = s_fileno_croak (out_fh, 1);
1158	dREQ;	1269	dREQ;
1159		1270
1160	req->type = REQ_SENDFILE;	1271	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1272	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1273	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	1274	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1275	req->int2 = ifd;
1165	req->offset = in_offset;	1276	req->offs = in_offset;
1166	req->length = length;	1277	req->size = length;
1167		1278
1168	REQ_SEND;	1279	REQ_SEND;
1169	}	1280	}
1170		1281
1171	void	1282	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1283	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$
1178	PPCODE:	1284	PPCODE:
1179	{	1285	{
		1286	int fd = s_fileno_croak (fh, 0);
1180	dREQ;	1287	dREQ;
1181		1288
1182	req->type = REQ_READAHEAD;	1289	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	1290	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1291	req->int1 = fd;
1185	req->offset = offset;	1292	req->offs = offset;
1186	req->length = length;	1293	req->size = length;
1187		1294
1188	REQ_SEND;	1295	REQ_SEND;
1189	}	1296	}
1190		1297
1191	void	1298	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1299	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1300	ALIAS:
1196	aio_stat = REQ_STAT	1301	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	1302	aio_lstat = EIO_LSTAT
		1303	aio_statvfs = EIO_STATVFS
1198	PPCODE:	1304	PPCODE:
1199	{	1305	{
1200	dREQ;	1306	dREQ;
1201		1307
1202	New (0, req->statdata, 1, Stat_t);	1308	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1203	if (!req->statdata)
1204	{
1205	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");
1207	}
1208
1209	if (SvPOK (fh_or_path))
1210	{
1211	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);
1214	}
1215	else
1216	{
1217	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}
1221		1309
1222	REQ_SEND;	1310	REQ_SEND;
1223	}	1311	}
1224		1312
		1313	UV
		1314	major (UV dev)
		1315	ALIAS:
		1316	minor = 1
		1317	CODE:
		1318	RETVAL = ix ? major (dev) : minor (dev);
		1319	OUTPUT:
		1320	RETVAL
		1321
		1322	UV
		1323	makedev (UV maj, UV min)
		1324	CODE:
		1325	RETVAL = makedev (maj, min);
		1326	OUTPUT:
		1327	RETVAL
		1328
1225	void	1329	void
		1330	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1331	PPCODE:
		1332	{
		1333	dREQ;
		1334
		1335	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1336	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1337	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
		1348	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1349	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1350
		1351	REQ_SEND;
		1352	}
		1353
		1354	void
		1355	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->int2 = mode;
		1361	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
		1370	dREQ;
		1371
		1372	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1373	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1374	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1381	PPCODE:
		1382	{
		1383	dREQ;
		1384
		1385	req->type = EIO_READDIR;
		1386	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1387
		1388	if (flags & EIO_READDIR_DENTS)
		1389	req->int1 |= EIO_READDIR_CUSTOM2;
		1390
		1391	req_set_path1 (req, pathname);
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
		1397	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1398	PPCODE:
		1399	{
		1400	dREQ;
		1401
		1402	req->type = EIO_MKDIR;
		1403	req->int2 = mode;
		1404	req_set_path1 (req, pathname);
		1405
		1406	REQ_SEND;
		1407	}
		1408
		1409	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1410	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1411	ALIAS:
1230	aio_unlink = REQ_UNLINK	1412	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1413	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1414	aio_readdir = EIO_READDIR
1233	PPCODE:	1415	PPCODE:
1234	{	1416	{
1235	dREQ;	1417	dREQ;
1236		1418
1237	req->type = ix;	1419	req->type = ix;
1238	req->data = newSVsv (pathname);	1420	req_set_path1 (req, pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1421
1240
1241	REQ_SEND;	1422	REQ_SEND;
1242	}	1423	}
1243		1424
1244	void	1425	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1426	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1427	ALIAS:
1250	aio_link = REQ_LINK	1428	aio_link = EIO_LINK
1251	aio_symlink = REQ_SYMLINK	1429	aio_symlink = EIO_SYMLINK
1252	aio_rename = REQ_RENAME	1430	aio_rename = EIO_RENAME
1253	PPCODE:	1431	PPCODE:
1254	{	1432	{
		1433	eio_wd wd2 = 0;
1255	dREQ;	1434	dREQ;
1256		1435
1257	req->type = ix;	1436	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1437	req_set_path1 (req, oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1438	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1260	req->data = newSVsv (newpath);	1439	req->int3 = (long)wd2;
1261	req->dataptr = SvPVbyte_nolen (req->data);
1262		1440
1263	REQ_SEND;	1441	REQ_SEND;
1264	}	1442	}
1265		1443
1266	void	1444	void
1267	aio_busy (delay,callback=&PL_sv_undef)	1445	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1446	PPCODE:
1271	{	1447	{
1272	dREQ;	1448	dREQ;
1273		1449
1274	req->type = REQ_BUSY;	1450	req->type = EIO_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1451	req->int2 = (mode_t)mode;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1452	req->offs = dev;
1277		1453	req_set_path1 (req, pathname);
		1454
1278	REQ_SEND;	1455	REQ_SEND;
1279	}	1456	}
1280		1457
1281	void	1458	void
1282	aio_group (callback=&PL_sv_undef)	1459	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1283	SV * callback	1460	ALIAS:
1284	PROTOTYPE: ;$	1461	aio_mtouch = EIO_MTOUCH
		1462	aio_msync = EIO_MSYNC
1285	PPCODE:	1463	PPCODE:
1286	{	1464	{
		1465	STRLEN svlen;
		1466	char *svptr = SvPVbyte (data, svlen);
		1467	UV len = SvUV (length);
		1468
		1469	if (offset < 0)
		1470	offset += svlen;
		1471
		1472	if (offset < 0 || offset > svlen)
		1473	croak ("offset outside of scalar");
		1474
		1475	if (!SvOK (length) || len + offset > svlen)
		1476	len = svlen - offset;
		1477
		1478	{
		1479	dREQ;
		1480
		1481	req->type = ix;
		1482	req->sv2 = SvREFCNT_inc (data);
		1483	req->ptr2 = (char *)svptr + offset;
		1484	req->size = len;
		1485	req->int1 = flags;
		1486
		1487	REQ_SEND;
		1488	}
		1489	}
		1490
		1491	void
		1492	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1493	PPCODE:
		1494	{
		1495	STRLEN svlen;
		1496	char *svptr = SvPVbyte (data, svlen);
		1497	UV len = SvUV (length);
		1498
		1499	if (offset < 0)
		1500	offset += svlen;
		1501
		1502	if (offset < 0 || offset > svlen)
		1503	croak ("offset outside of scalar");
		1504
		1505	if (!SvOK (length) || len + offset > svlen)
		1506	len = svlen - offset;
		1507
		1508	{
		1509	dREQ;
		1510
		1511	req->type = EIO_MLOCK;
		1512	req->sv2 = SvREFCNT_inc (data);
		1513	req->ptr2 = (char *)svptr + offset;
		1514	req->size = len;
		1515
		1516	REQ_SEND;
		1517	}
		1518	}
		1519
		1520	void
		1521	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1522	PPCODE:
		1523	{
		1524	dREQ;
		1525
		1526	req->type = EIO_MLOCKALL;
		1527	req->int1 = flags;
		1528
		1529	REQ_SEND;
		1530	}
		1531
		1532	void
		1533	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1534	PPCODE:
		1535	{
		1536	int fd = s_fileno_croak (fh, 0);
1287	dREQ;	1537	dREQ;
1288		1538
1289	req->type = REQ_GROUP;	1539	req->type = EIO_CUSTOM;
1290	req_send (req);	1540	req->sv1 = newSVsv (fh);
		1541	req->int1 = fd;
1291		1542
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1543	req->feed = fiemap;
1293	}	1544	#if HAVE_FIEMAP
		1545	/* keep our fingers crossed that the next two types are 64 bit */
		1546	req->offs = start;
		1547	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1548	req->int2 = flags;
		1549	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1550	#endif
1294		1551
		1552	REQ_SEND;
		1553	}
		1554
1295	void	1555	void
1296	aio_nop (callback=&PL_sv_undef)	1556	aio_busy (double delay, SV *callback=&PL_sv_undef)
1297	SV * callback
1298	PPCODE:	1557	PPCODE:
1299	{	1558	{
1300	dREQ;	1559	dREQ;
1301		1560
1302	req->type = REQ_NOP;	1561	req->type = EIO_BUSY;
		1562	req->nv1 = delay < 0. ? 0. : delay;
1303		1563
1304	REQ_SEND;	1564	REQ_SEND;
1305	}	1565	}
1306		1566
1307	void	1567	void
1308	aioreq_pri (int pri = DEFAULT_PRI)	1568	aio_group (SV *callback=&PL_sv_undef)
1309	CODE:	1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = EIO_GROUP;
		1574
		1575	req_submit (req);
		1576	XPUSHs (req_sv (req, aio_grp_stash));
		1577	}
		1578
		1579	void
		1580	aio_nop (SV *callback=&PL_sv_undef)
		1581	ALIAS:
		1582	aio_nop = EIO_NOP
		1583	aio_sync = EIO_SYNC
		1584	PPCODE:
		1585	{
		1586	dREQ;
		1587
		1588	req->type = ix;
		1589
		1590	REQ_SEND;
		1591	}
		1592
		1593	int
		1594	aioreq_pri (int pri = 0)
		1595	CODE:
		1596	RETVAL = next_pri;
		1597	if (items > 0)
		1598	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1599	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1600	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1601	next_pri = pri;
		1602	}
		1603	OUTPUT:
		1604	RETVAL
1313		1605
1314	void	1606	void
1315	aioreq_nice (int nice = 0)	1607	aioreq_nice (int nice = 0)
1316	CODE:	1608	CODE:
1317	nice = next_pri - nice;	1609	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1610	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1611	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1612	next_pri = nice;
1321		1613
1322	void	1614	void
1323	flush ()	1615	flush ()
1324	PROTOTYPE:
1325	CODE:	1616	CODE:
1326	while (nreqs)	1617	while (eio_nreqs ())
1327	{	1618	{
1328	poll_wait ();	1619	poll_wait ();
1329	poll_cb ();	1620	poll_cb ();
1330	}	1621	}
1331		1622
1332	void	1623	int
1333	poll()	1624	poll ()
1334	PROTOTYPE:
1335	CODE:	1625	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1626	poll_wait ();
1339	poll_cb ();	1627	RETVAL = poll_cb ();
1340	}
1341
1342	int
1343	poll_fileno()
1344	PROTOTYPE:
1345	CODE:
1346	RETVAL = respipe [0];
1347	OUTPUT:	1628	OUTPUT:
1348	RETVAL	1629	RETVAL
1349		1630
1350	int	1631	int
		1632	poll_fileno ()
		1633	CODE:
		1634	RETVAL = s_epipe_fd (&respipe);
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638	int
1351	poll_cb(...)	1639	poll_cb (...)
1352	PROTOTYPE:	1640	PROTOTYPE:
1353	CODE:	1641	CODE:
1354	RETVAL = poll_cb ();	1642	RETVAL = poll_cb ();
1355	OUTPUT:	1643	OUTPUT:
1356	RETVAL	1644	RETVAL
1357		1645
1358	void	1646	void
1359	poll_wait()	1647	poll_wait ()
1360	PROTOTYPE:
1361	CODE:	1648	CODE:
1362	if (nreqs)
1363	poll_wait ();	1649	poll_wait ();
1364		1650
1365	int	1651	int
1366	nreqs()	1652	nreqs ()
1367	PROTOTYPE:
1368	CODE:	1653	CODE:
1369	RETVAL = nreqs;	1654	RETVAL = eio_nreqs ();
1370	OUTPUT:	1655	OUTPUT:
1371	RETVAL	1656	RETVAL
1372		1657
		1658	int
		1659	nready ()
		1660	CODE:
		1661	RETVAL = eio_nready ();
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
		1666	npending ()
		1667	CODE:
		1668	RETVAL = eio_npending ();
		1669	OUTPUT:
		1670	RETVAL
		1671
		1672	int
		1673	nthreads ()
		1674	CODE:
		1675	RETVAL = eio_nthreads ();
		1676	OUTPUT:
		1677	RETVAL
		1678
		1679	int
		1680	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1681	CODE:
		1682	RETVAL = posix_fadvise (fh, offset, length, advice);
		1683	OUTPUT:
		1684	RETVAL
		1685
		1686	IV
		1687	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1688	CODE:
		1689	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1690	OUTPUT:
		1691	RETVAL
		1692
		1693	void
		1694	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1695	PPCODE:
		1696	sv_unmagic (scalar, MMAP_MAGIC);
		1697	{
		1698	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1699	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1700	if (addr == (void *)-1)
		1701	XSRETURN_NO;
		1702
		1703	sv_force_normal (scalar);
		1704
		1705	/* we store the length in mg_obj, as namlen is I32 :/ */
		1706	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1707	->mg_obj = (SV *)length;
		1708
		1709	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1710
		1711	if (!(prot & PROT_WRITE))
		1712	SvREADONLY_on (scalar);
		1713
		1714	if (SvLEN (scalar))
		1715	Safefree (SvPVX (scalar));
		1716
		1717	SvPVX (scalar) = (char *)addr;
		1718	SvCUR_set (scalar, length);
		1719	SvLEN_set (scalar, 0);
		1720	SvPOK_only (scalar);
		1721
		1722	XSRETURN_YES;
		1723	}
		1724
		1725	void
		1726	munmap (SV *scalar)
		1727	CODE:
		1728	sv_unmagic (scalar, MMAP_MAGIC);
		1729
		1730	int
		1731	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1732	ALIAS:
		1733	mprotect = 1
		1734	CODE:
		1735	{
		1736	STRLEN svlen;
		1737	void *addr = SvPVbyte (scalar, svlen);
		1738	size_t len = SvUV (length);
		1739
		1740	if (offset < 0)
		1741	offset += svlen;
		1742
		1743	if (offset < 0 || offset > svlen)
		1744	croak ("offset outside of scalar");
		1745
		1746	if (!SvOK (length) || len + offset > svlen)
		1747	len = svlen - offset;
		1748
		1749	addr = (void *)(((intptr_t)addr) + offset);
		1750	eio_page_align (&addr, &len);
		1751
		1752	switch (ix)
		1753	{
		1754	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1755	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1756	}
		1757	}
		1758	OUTPUT:
		1759	RETVAL
		1760
		1761	int
		1762	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1763	CODE:
		1764	{
		1765	STRLEN svlen;
		1766	void *addr = SvPVbyte (scalar, svlen);
		1767	size_t len = SvUV (length);
		1768
		1769	if (offset < 0)
		1770	offset += svlen;
		1771
		1772	if (offset < 0 || offset > svlen)
		1773	croak ("offset outside of scalar");
		1774
		1775	if (!SvOK (length) || len + offset > svlen)
		1776	len = svlen - offset;
		1777
		1778	addr = (void *)(((intptr_t)addr) + offset);
		1779	eio_page_align (&addr, &len);
		1780	#if _POSIX_MEMLOCK_RANGE
		1781	RETVAL = munlock (addr, len);
		1782	#else
		1783	RETVAL = EIO_ENOSYS ();
		1784	#endif
		1785	}
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	int
		1790	munlockall ()
		1791	CODE:
		1792	#if _POSIX_MEMLOCK
		1793	munlockall ();
		1794	#else
		1795	RETVAL = EIO_ENOSYS ();
		1796	#endif
		1797	OUTPUT:
		1798	RETVAL
		1799
		1800	int
		1801	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1802	CODE:
		1803	{
		1804	#if HAVE_LINUX_SPLICE
		1805	loff_t off_in_, off_out_;
		1806	RETVAL = splice (
		1807	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1808	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1809	length, flags
		1810	);
		1811	#else
		1812	RETVAL = EIO_ENOSYS ();
		1813	#endif
		1814	}
		1815	OUTPUT:
		1816	RETVAL
		1817
		1818	int
		1819	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1820	CODE:
		1821	#if HAVE_LINUX_SPLICE
		1822	RETVAL = tee (rfh, wfh, length, flags);
		1823	#else
		1824	RETVAL = EIO_ENOSYS ();
		1825	#endif
		1826	OUTPUT:
		1827	RETVAL
		1828
		1829	void _on_next_submit (SV *cb)
		1830	CODE:
		1831	SvREFCNT_dec (on_next_submit);
		1832	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1833
1373	PROTOTYPES: DISABLE	1834	PROTOTYPES: DISABLE
		1835
		1836	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1837
		1838	BOOT:
		1839	{
		1840	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1841	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1842	}
		1843
		1844	void
		1845	DESTROY (SV *self)
		1846	CODE:
		1847	{
		1848	aio_wd wd = SvAIO_WD (self);
		1849	#if HAVE_AT
		1850	{
		1851	SV *callback = &PL_sv_undef;
		1852	dREQ; /* clobbers next_pri :/ */
		1853	next_pri = req->pri; /* restore next_pri */
		1854	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1855	req->type = EIO_WD_CLOSE;
		1856	req->wd = wd;
		1857	REQ_SEND;
		1858	}
		1859	#else
		1860	eio_wd_close_sync (wd);
		1861	#endif
		1862	}
1374		1863
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1864	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1865
1377	void	1866	void
1378	cancel (aio_req_ornot req)	1867	cancel (aio_req_ornot req)
1379	CODE:	1868	CODE:
1380	req_cancel (req);	1869	eio_cancel (req);
1381		1870
1382	void	1871	void
1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1872	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1384	CODE:	1873	PPCODE:
		1874	{
		1875	if (GIMME_V != G_VOID)
		1876	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1877
		1878	if (items > 1)
		1879	{
		1880	SV *cb_cv =get_cb (callback);
		1881
1385	SvREFCNT_dec (req->callback);	1882	SvREFCNT_dec (req->callback);
1386	req->callback = newSVsv (callback);	1883	req->callback = SvREFCNT_inc (cb_cv);
		1884	}
		1885	}
1387		1886
1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1887	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1389		1888
1390	void	1889	void
1391	add (aio_req grp, ...)	1890	add (aio_req grp, ...)
1392	PPCODE:	1891	PPCODE:
1393	{	1892	{
1394	int i;	1893	int i;
1395	aio_req req;
1396		1894
1397	if (grp->fd == 2)	1895	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1896	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1897
1400	for (i = 1; i < items; ++i )	1898	for (i = 1; i < items; ++i )
1401	{	1899	{
		1900	aio_req req;
		1901
1402	if (GIMME_V != G_VOID)	1902	if (GIMME_V != G_VOID)
1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1903	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1404		1904
1405	req = SvAIO_REQ (ST (i));	1905	req = SvAIO_REQ (ST (i));
1406		1906
1407	if (req)	1907	if (req)
1408	{	1908	eio_grp_add (grp, req);
1409	++grp->length;
1410	req->grp = grp;
1411
1412	req->grp_prev = 0;
1413	req->grp_next = grp->grp_first;
1414
1415	if (grp->grp_first)
1416	grp->grp_first->grp_prev = req;
1417
1418	grp->grp_first = req;
1419	}
1420	}	1909	}
1421	}	1910	}
		1911
		1912	void
		1913	cancel_subs (aio_req_ornot req)
		1914	CODE:
		1915	req_cancel_subs (req);
1422		1916
1423	void	1917	void
1424	result (aio_req grp, ...)	1918	result (aio_req grp, ...)
1425	CODE:	1919	CODE:
1426	{	1920	{
1427	int i;	1921	int i;
		1922	AV *av;
		1923
		1924	grp->errorno = errno;
		1925
1428	AV *av = newAV ();	1926	av = newAV ();
		1927	av_extend (av, items - 1);
1429		1928
1430	for (i = 1; i < items; ++i )	1929	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1930	av_push (av, newSVsv (ST (i)));
1432		1931
1433	SvREFCNT_dec (grp->data);	1932	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1933	grp->sv1 = (SV *)av;
1435	}	1934	}
		1935
		1936	void
		1937	errno (aio_req grp, int errorno = errno)
		1938	CODE:
		1939	grp->errorno = errorno;
1436		1940
1437	void	1941	void
1438	limit (aio_req grp, int limit)	1942	limit (aio_req grp, int limit)
1439	CODE:	1943	CODE:
1440	grp->fd2 = limit;	1944	eio_grp_limit (grp, limit);
1441	aio_grp_feed (grp);
1442		1945
1443	void	1946	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1947	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1948	CODE:
1446	{	1949	{
1447	SvREFCNT_dec (grp->fh2);	1950	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1951	grp->sv2 = newSVsv (callback);
		1952	grp->feed = aio_grp_feed;
1449		1953
1450	if (grp->fd2 <= 0)	1954	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1955	grp->int2 = 2;
1452		1956
1453	aio_grp_feed (grp);	1957	eio_grp_limit (grp, grp->int2);
1454	}	1958	}
1455		1959

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