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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 1.219 by root, Fri Jul 27 18:43:25 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 72 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 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_mapped_extents < count)
		200	/* either autosizing succeeded,
		201	* or the file had no extents
		202	* or we luckily had enough space */
		203	break;
		204
		205	/* some kernels overwrite fm_length, so just reset everything */
		206	fiemap->fm_start = req->offs;
		207	fiemap->fm_length = req->size;
		208	fiemap->fm_flags = req->int2;
		209	fiemap->fm_extent_count = 0;
		210
		211	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		212	return;
		213
		214	/* to work around a kernel bug, we allocate one more */
		215	count = fiemap->fm_mapped_extents + 1;
		216
		217	free (fiemap);
		218	}
		219
		220	req->result = 0;
		221
53	#else	222	#else
54	# define STACKSIZE 16384	223	errno = ENOSYS;
55	#endif	224	#endif
		225	}
56		226
57	/* buffer size for various temporary buffers */	227	/*****************************************************************************/
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		228
67	enum {	229	enum {
68	REQ_QUIT,	230	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	};	231	};
80		232
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;	233	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	234	typedef eio_req *aio_req_ornot;
		235	typedef eio_wd aio_wd;
115		236
116	enum {	237	static SV *on_next_submit;
117	PRI_MIN = -4,	238	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;	239	static int max_outstanding;
130	static int respipe [2];
131		240
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	241	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		242
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	243	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);	244	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	245
		246	static void
		247	want_poll (void)
		248	{
		249	/* write a dummy byte to the pipe so fh becomes ready */
		250	s_epipe_signal (&respipe);
		251	}
		252
		253	static void
		254	done_poll (void)
		255	{
		256	/* read any signals sent by the worker threads */
		257	s_epipe_drain (&respipe);
		258	}
198		259
199	/* must be called at most once */	260	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	261	static SV *
		262	req_sv (aio_req req, HV *stash)
201	{	263	{
202	if (!req->self)	264	if (!req->self)
203	{	265	{
204	req->self = (SV *)newHV ();	266	req->self = (SV *)newHV ();
205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	267	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206	}	268	}
207		269
208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	270	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209	}	271	}
210		272
211	static aio_req SvAIO_REQ (SV *sv)	273	static SV *
		274	newSVaio_wd (aio_wd wd)
		275	{
		276	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		277	}
		278
		279	static aio_req
		280	SvAIO_REQ (SV *sv)
212	{	281	{
213	MAGIC *mg;	282	MAGIC *mg;
214		283
215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	284	if (!SvROK (sv)
		285	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		286	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		287	&& SvSTASH (SvRV (sv)) != aio_req_stash
		288	&& !sv_derived_from (sv, "IO::AIO::REQ")))
216	croak ("object of class " AIO_REQ_KLASS " expected");	289	croak ("object of class IO::AIO::REQ expected");
217		290
218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	291	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219		292
220	return mg ? (aio_req)mg->mg_ptr : 0;	293	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	294	}
222		295
		296	static aio_wd
		297	SvAIO_WD (SV *sv)
		298	{
		299	if (!SvROK (sv)
		300	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		301	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		302	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		303
		304	return (aio_wd)(long)SvIVX (SvRV (sv));
		305	}
		306
		307	static void
223	static void aio_grp_feed (aio_req grp)	308	aio_grp_feed (aio_req grp)
224	{	309	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	310	if (grp->sv2 && SvOK (grp->sv2))
226	{	311	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	312	dSP;
232		313
233	ENTER;	314	ENTER;
234	SAVETMPS;	315	SAVETMPS;
235	PUSHMARK (SP);	316	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	317	XPUSHs (req_sv (grp, aio_grp_stash));
237	PUTBACK;	318	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	319	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	320	SPAGAIN;
240	FREETMPS;	321	FREETMPS;
241	LEAVE;	322	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	}	323	}
252	}	324	}
253		325
254	static void aio_grp_dec (aio_req grp)	326	static void
		327	req_submit (eio_req *req)
255	{	328	{
256	--grp->length;	329	eio_submit (req);
257		330
258	/* call feeder, if applicable */	331	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	332	{
264	req_invoke (grp);	333	dSP;
265	req_free (grp);	334	SV *cb = sv_2mortal (on_next_submit);
		335
		336	on_next_submit = 0;
		337
		338	PUSHMARK (SP);
		339	PUTBACK;
		340	call_sv (cb, G_DISCARD | G_EVAL);
266	}	341	}
267	}	342	}
268		343
269	static void poll_wait ()	344	static int
		345	req_invoke (eio_req *req)
270	{	346	{
271	fd_set rfd;	347	if (req->flags & FLAG_SV2_RO_OFF)
		348	SvREADONLY_off (req->sv2);
272		349
273	while (nreqs)	350	if (!EIO_CANCELLED (req) && req->callback)
274	{	351	{
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;	352	dSP;
297		353	static SV *sv_result_cache; /* caches the result integer SV */
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	354	SV *sv_result;
299	{
300	errno = req->errorno;
301		355
302	ENTER;	356	ENTER;
303	SAVETMPS;	357	SAVETMPS;
304	PUSHMARK (SP);	358	PUSHMARK (SP);
305	EXTEND (SP, 1);	359	EXTEND (SP, 1);
306		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
		363	{
		364	sv_result = sv_result_cache; sv_result_cache = 0;
		365	SvIV_set (sv_result, req->result);
		366	SvIOK_only (sv_result);
		367	}
		368	else
		369	{
		370	sv_result = newSViv (req->result);
		371	SvREADONLY_on (sv_result);
		372	}
		373
307	switch (req->type)	374	switch (req->type)
308	{	375	{
		376	case EIO_WD_OPEN:
		377	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		378	break;
		379
309	case REQ_READDIR:	380	case EIO_READDIR:
310	{	381	{
311	SV *rv = &PL_sv_undef;	382	SV *rv = &PL_sv_undef;
312		383
313	if (req->result >= 0)	384	if (req->result >= 0)
314	{	385	{
		386	int i;
315	char *buf = req->data2ptr;	387	char *names = (char *)req->ptr2;
		388	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	389	AV *av = newAV ();
317		390
318	while (req->result)	391	av_extend (av, req->result - 1);
		392
		393	for (i = 0; i < req->result; ++i)
319	{	394	{
		395	if (req->int1 & EIO_READDIR_DENTS)
		396	{
		397	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		398
		399	if (req->int1 & EIO_READDIR_CUSTOM2)
		400	{
		401	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		402	AV *avent = newAV ();
		403
		404	av_extend (avent, 2);
		405
		406	if (!sv_type [ent->type])
		407	{
		408	sv_type [ent->type] = newSViv (ent->type);
		409	SvREADONLY_on (sv_type [ent->type]);
		410	}
		411
		412	av_store (avent, 0, namesv);
		413	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		414	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		415
		416	av_store (av, i, newRV_noinc ((SV *)avent));
		417	}
		418	else
		419	av_store (av, i, namesv);
		420
		421	++ent;
		422	}
		423	else
		424	{
320	SV *sv = newSVpv (buf, 0);	425	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	426	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	427	names += SvCUR (name) + 1;
324	req->result--;	428	}
325	}	429	}
326		430
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	431	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	432	}
329		433
330	PUSHs (rv);	434	PUSHs (rv);
		435
		436	if (req->int1 & EIO_READDIR_CUSTOM1)
		437	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	438	}
332	break;	439	break;
333		440
334	case REQ_OPEN:	441	case EIO_OPEN:
335	{	442	{
336	/* convert fd to fh */	443	/* convert fd to fh */
337	SV *fh;	444	SV *fh = &PL_sv_undef;
338		445
339	PUSHs (sv_2mortal (newSViv (req->result)));	446	if (req->result >= 0)
340	PUTBACK;	447	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	448	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	449	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		450	char sym [64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
343		455
344	fh = SvREFCNT_inc (POPs);	456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	(int)req->result
		462	);
345		463
		464	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		465	fh = (SV *)gv;
		466	}
		467
346	PUSHMARK (SP);	468	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	469	}
349	break;	470	break;
350		471
		472	case EIO_STATVFS:
		473	case EIO_FSTATVFS:
		474	{
		475	SV *rv = &PL_sv_undef;
		476
		477	#ifndef _WIN32
		478	if (req->result >= 0)
		479	{
		480	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		481	HV *hv = newHV ();
		482
		483	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		484
		485	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		486	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		487	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		488	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		489	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		490	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		491	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		492	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		493	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		494	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		495	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		496	}
		497	#endif
		498
		499	PUSHs (rv);
		500	}
		501
		502	break;
		503
351	case REQ_GROUP:	504	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	505	req->int1 = 2; /* mark group as finished */
353		506
354	if (req->data)	507	if (req->sv1)
355	{	508	{
356	int i;	509	int i;
357	AV *av = (AV *)req->data;	510	AV *av = (AV *)req->sv1;
358		511
359	EXTEND (SP, AvFILL (av) + 1);	512	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	513	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	514	PUSHs (*av_fetch (av, i, 0));
362	}	515	}
363	break;	516	break;
364		517
365	case REQ_NOP:	518	case EIO_NOP:
366	case REQ_BUSY:	519	case EIO_BUSY:
367	break;	520	break;
368		521
		522	case EIO_READLINK:
		523	case EIO_REALPATH:
		524	if (req->result > 0)
		525	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		526	break;
		527
		528	case EIO_STAT:
		529	case EIO_LSTAT:
		530	case EIO_FSTAT:
		531	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		532
		533	if (!(PL_laststatval = req->result))
		534	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		535	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		536
		537	PUSHs (sv_result);
		538	break;
		539
		540	case EIO_SEEK:
		541	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		542	break;
		543
		544	case EIO_READ:
		545	{
		546	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		547	*SvEND (req->sv2) = 0;
		548	SvPOK_only (req->sv2);
		549	SvSETMAGIC (req->sv2);
		550	PUSHs (sv_result);
		551	}
		552	break;
		553
		554	case EIO_CUSTOM:
		555	if (req->feed == fiemap)
		556	{
		557	#if HAVE_FIEMAP
		558	if (!req->result)
		559	{
		560	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		561
		562	if (fiemap->fm_extent_count)
		563	{
		564	AV *av = newAV ();
		565	int i;
		566
		567	while (fiemap->fm_mapped_extents)
		568	{
		569	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		570	AV *ext_av = newAV ();
		571
		572	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		573	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		574	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		575	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		576
		577	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		578	}
		579
		580	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		581	}
		582	else
		583	{
		584	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		585	PUSHs (sv_result);
		586	}
		587	}
		588	#endif
		589	}
		590	else
		591	PUSHs (sv_result);
		592	break;
		593
		594	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		595	if (req->result > 0)
		596	SvIV_set (sv_result, 0);
		597	/* FALLTHROUGH */
		598
369	default:	599	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	600	PUSHs (sv_result);
371	break;	601	break;
372	}	602	}
373		603
		604	errno = req->errorno;
374		605
375	PUTBACK;	606	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	607	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	608	SPAGAIN;
		609
		610	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		611	SvREFCNT_dec (sv_result);
		612	else
		613	sv_result_cache = sv_result;
378		614
379	FREETMPS;	615	FREETMPS;
380	LEAVE;	616	LEAVE;
		617
		618	PUTBACK;
381	}	619	}
382		620
383	if (req->grp)	621	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	}	622	}
403		623
404	static void req_free (aio_req req)	624	static void
		625	req_destroy (aio_req req)
405	{	626	{
406	if (req->self)	627	if (req->self)
407	{	628	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	629	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	630	SvREFCNT_dec (req->self);
410	}	631	}
411		632
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	633	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	634	SvREFCNT_dec (req->sv2);
		635	SvREFCNT_dec (req->sv3);
		636	SvREFCNT_dec (req->sv4);
415	SvREFCNT_dec (req->callback);	637	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		638
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420
421	Safefree (req);	639	free (req);
422	}	640	}
423		641
424	static void req_cancel (aio_req req)	642	static void
		643	req_cancel_subs (aio_req grp)
425	{	644	{
426	req->flags |= FLAG_CANCELLED;
427
428	if (req->type == REQ_GROUP)	645	if (grp->type != EIO_GROUP)
		646	return;
		647
		648	SvREFCNT_dec (grp->sv2);
		649	grp->sv2 = 0;
		650
		651	eio_grp_cancel (grp);
		652	}
		653
		654	static void ecb_cold
		655	create_respipe (void)
		656	{
		657	if (s_epipe_renew (&respipe))
		658	croak ("IO::AIO: unable to initialize result pipe");
		659	}
		660
		661	static void
		662	poll_wait (void)
		663	{
		664	while (eio_nreqs ())
429	{	665	{
430	aio_req sub;	666	int size;
431		667
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	668	X_LOCK (reslock);
433	req_cancel (sub);	669	size = res_queue.size;
		670	X_UNLOCK (reslock);
		671
		672	if (size)
		673	return;
		674
		675	etp_maybe_start_thread ();
		676
		677	s_epipe_wait (&respipe);
434	}	678	}
435	}	679	}
436		680
437	static int poll_cb ()	681	static int
		682	poll_cb (void)
438	{	683	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	684	for (;;)
445	{	685	{
446	pthread_mutex_lock (&reslock);	686	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		687
449	if (req)	688	if (res > 0)
		689	croak (0);
		690
		691	if (!max_outstanding || max_outstanding > eio_nreqs ())
		692	return res;
		693
		694	poll_wait ();
		695	}
		696	}
		697
		698	static void ecb_cold
		699	reinit (void)
		700	{
		701	create_respipe ();
		702
		703	if (eio_init (want_poll, done_poll) < 0)
		704	croak ("IO::AIO: unable to initialise eio library");
		705	}
		706
		707	/*****************************************************************************/
		708
		709	#if !_POSIX_MAPPED_FILES
		710	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		711	# define munmap(addr,length) EIO_ENOSYS ()
		712	#endif
		713
		714	#if !_POSIX_MEMORY_PROTECTION
		715	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		716	# define PROT_NONE 0
		717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
		721	#endif
		722
		723	#define MMAP_MAGIC PERL_MAGIC_ext
		724
		725	static int ecb_cold
		726	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		727	{
		728	int old_errno = errno;
		729	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		730	errno = old_errno;
		731
		732	mg->mg_obj = 0; /* just in case */
		733
		734	SvREADONLY_off (sv);
		735
		736	if (SvPVX (sv) != mg->mg_ptr)
		737	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		738
		739	SvCUR_set (sv, 0);
		740	SvPVX (sv) = 0;
		741	SvOK_off (sv);
		742
		743	return 0;
		744	}
		745
		746	static MGVTBL mmap_vtbl = {
		747	0, 0, 0, 0, mmap_free
		748	};
		749
		750	/*****************************************************************************/
		751
		752	static SV *
		753	get_cb (SV *cb_sv)
		754	{
		755	SvGETMAGIC (cb_sv);
		756	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		757	}
		758
		759	static aio_req ecb_noinline
		760	dreq (SV *callback)
		761	{
		762	SV *cb_cv;
		763	aio_req req;
		764	int req_pri = next_pri;
		765	next_pri = EIO_PRI_DEFAULT;
		766
		767	cb_cv = get_cb (callback);
		768
		769	req = calloc (sizeof (*req), 1);
		770	if (!req)
		771	croak ("out of memory during eio_req allocation");
		772
		773	req->callback = SvREFCNT_inc (cb_cv);
		774	req->pri = req_pri;
		775
		776	return req;
		777	}
		778
		779	#define dREQ \
		780	aio_req req = dreq (callback); \
		781
		782	#define REQ_SEND \
		783	PUTBACK; \
		784	req_submit (req); \
		785	SPAGAIN; \
		786	\
		787	if (GIMME_V != G_VOID) \
		788	XPUSHs (req_sv (req, aio_req_stash));
		789
		790	ecb_inline void
		791	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		792	{
		793	if (expect_false (SvROK (path)))
		794	{
		795	SV *rv = SvRV (path);
		796	SV *wdob;
		797
		798	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
450	{	799	{
451	if (!res_queue.size)	800	path = AvARRAY (rv)[1];
		801	wdob = AvARRAY (rv)[0];
		802
		803	if (SvOK (wdob))
452	{	804	{
453	/* read any signals sent by the worker threads */	805	*wd = SvAIO_WD (wdob);
454	char buf [32];	806	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}	807	}
		808	else
		809	*wd = EIO_INVALID_WD;
458	}	810	}
459		811	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	{	812	{
471	req->fd = 1; /* mark request as delayed */	813	*wd = (aio_wd)(long)SvIVX (rv);
472	continue;	814	*wdsv = SvREFCNT_inc_NN (rv);
		815	*ptr = ".";
		816	return; /* path set to "." */
473	}	817	}
474	else	818	else
475	{	819	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	}	820	}
496		821
497	return count;	822	*pathsv = newSVsv (path);
		823	*ptr = SvPVbyte_nolen (*pathsv);
498	}	824	}
499		825
500	static void *aio_proc(void *arg);	826	static void ecb_noinline
501		827	req_set_path1 (aio_req req, SV *path)
502	static void start_thread (void)
503	{	828	{
504	sigset_t fullsigset, oldsigset;	829	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	}	830	}
520		831
521	static void req_send (aio_req req)	832	static void ecb_noinline
		833	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
522	{	834	{
523	while (started < wanted && nreqs >= started)	835	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
524	start_thread ();
525		836
526	++nreqs;	837	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	{	838	{
572	end_thread ();	839	case SVt_PVIO:
573	cur--;	840	case SVt_PVLV:
		841	case SVt_PVGV:
		842	req->type = type_fh;
		843	req->sv1 = newSVsv (fh_or_path);
		844	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		845	break;
		846
		847	default:
		848	req->type = type_path;
		849	req_set_path1 (req, fh_or_path);
		850	break;
574	}	851	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}	852	}
582		853
583	static void create_pipe ()	854	XS(boot_IO__AIO) ecb_cold;
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587		855
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	856	MODULE = IO::AIO PACKAGE = IO::AIO
589	croak ("cannot set result pipe to nonblocking mode");
590		857
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	858	PROTOTYPES: ENABLE
592	croak ("cannot set result pipe to nonblocking mode");
593	}
594		859
595	/*****************************************************************************/	860	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	{	861	{
611	ssize_t res;	862	static const struct {
612	off_t ooffset;	863	const char *name;
		864	IV iv;
		865	} *civ, const_iv[] = {
		866	# define const_niv(name, value) { # name, (IV) value },
		867	# define const_iv(name) { # name, (IV) name },
		868	# define const_eio(name) { # name, (IV) EIO_ ## name },
613		869
614	pthread_mutex_lock (&preadwritelock);	870	/* 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		871
621	return res;	872	const_iv (ENOSYS)
622	}	873	const_iv (EXDEV)
		874	const_iv (EBADR)
623		875
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	876	const_iv (O_RDONLY)
625	{	877	const_iv (O_WRONLY)
626	ssize_t res;	878	const_iv (O_RDWR)
627	off_t ooffset;	879	const_iv (O_CREAT)
		880	const_iv (O_TRUNC)
		881	const_iv (O_EXCL)
		882	const_iv (O_APPEND)
628		883
629	pthread_mutex_lock (&preadwritelock);	884	const_iv (O_ASYNC)
630	ooffset = lseek (fd, 0, SEEK_CUR);	885	const_iv (O_DIRECT)
631	lseek (fd, offset, SEEK_SET);	886	const_iv (O_NOATIME)
632	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);
635		887
636	return res;	888	const_iv (O_CLOEXEC)
637	}	889	const_iv (O_NOCTTY)
638	#endif	890	const_iv (O_NOFOLLOW)
		891	const_iv (O_NONBLOCK)
		892	const_iv (O_EXEC)
		893	const_iv (O_SEARCH)
		894	const_iv (O_DIRECTORY)
		895	const_iv (O_DSYNC)
		896	const_iv (O_RSYNC)
		897	const_iv (O_SYNC)
		898	const_iv (O_TTY_INIT)
639		899
640	#if !HAVE_FDATASYNC	900	const_iv (S_IFIFO)
641	# define fdatasync fsync	901	const_iv (S_IFCHR)
642	#endif	902	const_iv (S_IFBLK)
		903	const_iv (S_IFLNK)
		904	const_iv (S_IFREG)
		905	const_iv (S_IFDIR)
		906	const_iv (S_IFWHT)
		907	const_iv (S_IFSOCK)
		908	const_iv (S_IFMT)
643		909
644	#if !HAVE_READAHEAD	910	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
645	# define readahead aio_readahead	911	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		912	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		913	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		914	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		915	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
646		916
647	static ssize_t readahead (int fd, off_t offset, size_t count)	917	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
648	{	918	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
649	dBUF;	919	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		920	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		921	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
650		922
651	while (count > 0)	923	const_iv (ST_RDONLY)
652	{	924	const_iv (ST_NOSUID)
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	925	const_iv (ST_NODEV)
		926	const_iv (ST_NOEXEC)
		927	const_iv (ST_SYNCHRONOUS)
		928	const_iv (ST_MANDLOCK)
		929	const_iv (ST_WRITE)
		930	const_iv (ST_APPEND)
		931	const_iv (ST_IMMUTABLE)
		932	const_iv (ST_NOATIME)
		933	const_iv (ST_NODIRATIME)
		934	const_iv (ST_RELATIME)
654		935
655	pread (fd, aio_buf, len, offset);	936	const_iv (PROT_NONE)
656	offset += len;	937	const_iv (PROT_EXEC)
657	count -= len;	938	const_iv (PROT_READ)
658	}	939	const_iv (PROT_WRITE)
659		940
660	fBUF;	941	/*const_iv (MAP_FIXED)*/
		942	const_iv (MAP_PRIVATE)
		943	const_iv (MAP_SHARED)
		944	const_iv (MAP_ANONYMOUS)
661		945
662	errno = 0;	946	/* linuxish */
663	}	947	const_iv (MAP_HUGETLB)
664	#endif	948	const_iv (MAP_LOCKED)
		949	const_iv (MAP_NORESERVE)
		950	const_iv (MAP_POPULATE)
		951	const_iv (MAP_NONBLOCK)
665		952
666	#if !HAVE_READDIR_R	953	const_iv (FIEMAP_FLAG_SYNC)
667	# define readdir_r aio_readdir_r	954	const_iv (FIEMAP_FLAG_XATTR)
		955	const_iv (FIEMAP_FLAGS_COMPAT)
		956	const_iv (FIEMAP_EXTENT_LAST)
		957	const_iv (FIEMAP_EXTENT_UNKNOWN)
		958	const_iv (FIEMAP_EXTENT_DELALLOC)
		959	const_iv (FIEMAP_EXTENT_ENCODED)
		960	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		961	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		962	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		963	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		964	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		965	const_iv (FIEMAP_EXTENT_MERGED)
		966	const_iv (FIEMAP_EXTENT_SHARED)
668		967
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	968	const_iv (SPLICE_F_MOVE)
670		969	const_iv (SPLICE_F_NONBLOCK)
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	970	const_iv (SPLICE_F_MORE)
672	{	971	const_iv (SPLICE_F_GIFT)
673	struct dirent *e;
674	int errorno;
675		972
676	pthread_mutex_lock (&readdirlock);	973	const_iv (SEEK_DATA)
		974	const_iv (SEEK_HOLE)
677		975
678	e = readdir (dirp);	976	/* libeio constants */
679	errorno = errno;	977	const_eio (SEEK_SET)
		978	const_eio (SEEK_CUR)
		979	const_eio (SEEK_END)
680		980
681	if (e)	981	const_eio (MCL_FUTURE)
682	{	982	const_eio (MCL_CURRENT)
683	*res = ent;
684	strcpy (ent->d_name, e->d_name);
685	}
686	else
687	*res = 0;
688		983
689	pthread_mutex_unlock (&readdirlock);	984	const_eio (MS_ASYNC)
		985	const_eio (MS_INVALIDATE)
		986	const_eio (MS_SYNC)
690		987
691	errno = errorno;	988	const_eio (MT_MODIFY)
692	return e ? 0 : -1;
693	}
694	#endif
695		989
696	/* sendfile always needs emulation */	990	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	991	const_eio (SYNC_FILE_RANGE_WRITE)
698	{	992	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
699	ssize_t res;
700		993
701	if (!count)	994	const_eio (FALLOC_FL_KEEP_SIZE)
702	return 0;	995	const_eio (FALLOC_FL_PUNCH_HOLE)
703		996
704	#if HAVE_SENDFILE	997	const_eio (READDIR_DENTS)
705	# if __linux	998	const_eio (READDIR_DIRS_FIRST)
706	res = sendfile (ofd, ifd, &offset, count);	999	const_eio (READDIR_STAT_ORDER)
		1000	const_eio (READDIR_FOUND_UNKNOWN)
707		1001
708	# elif __freebsd	1002	const_eio (DT_UNKNOWN)
709	/*	1003	const_eio (DT_FIFO)
710	* Of course, the freebsd sendfile is a dire hack with no thoughts	1004	const_eio (DT_CHR)
711	* wasted on making it similar to other I/O functions.	1005	const_eio (DT_DIR)
712	*/	1006	const_eio (DT_BLK)
713	{	1007	const_eio (DT_REG)
714	off_t sbytes;	1008	const_eio (DT_LNK)
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1009	const_eio (DT_SOCK)
716		1010	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	}	1011	};
721		1012
722	# elif __hpux	1013	aio_stash = gv_stashpv ("IO::AIO" , 1);
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	1014	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1015	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1016	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
724		1017
725	# elif __solaris	1018	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
726	{	1019	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
727	struct sendfilevec vec;
728	size_t sbytes;
729		1020
730	vec.sfv_fd = ifd;	1021	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734		1022
735	res = sendfilev (ofd, &vec, 1, &sbytes);	1023	reinit ();
		1024	}
736		1025
737	if (res < 0 && sbytes)	1026	void
		1027	reinit ()
		1028	PROTOTYPE:
		1029
		1030	void
		1031	max_poll_reqs (unsigned int nreqs)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_max_poll_reqs (nreqs);
		1035
		1036	void
		1037	max_poll_time (double nseconds)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_poll_time (nseconds);
		1041
		1042	void
		1043	min_parallel (unsigned int nthreads)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_min_parallel (nthreads);
		1047
		1048	void
		1049	max_parallel (unsigned int nthreads)
		1050	PROTOTYPE: $
		1051	CODE:
		1052	eio_set_max_parallel (nthreads);
		1053
		1054	void
		1055	max_idle (unsigned int nthreads)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	eio_set_max_idle (nthreads);
		1059
		1060	void
		1061	idle_timeout (unsigned int seconds)
		1062	PROTOTYPE: $
		1063	CODE:
		1064	eio_set_idle_timeout (seconds);
		1065
		1066	void
		1067	max_outstanding (unsigned int maxreqs)
		1068	PROTOTYPE: $
		1069	CODE:
		1070	max_outstanding = maxreqs;
		1071
		1072	void
		1073	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1074	PPCODE:
		1075	{
		1076	dREQ;
		1077
		1078	req->type = EIO_WD_OPEN;
		1079	req_set_path1 (req, pathname);
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1086	PPCODE:
		1087	{
		1088	dREQ;
		1089
		1090	req->type = EIO_OPEN;
		1091	req_set_path1 (req, pathname);
		1092	req->int1 = flags;
		1093	req->int2 = mode;
		1094
		1095	REQ_SEND;
		1096	}
		1097
		1098	void
		1099	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1100	ALIAS:
		1101	aio_fsync = EIO_FSYNC
		1102	aio_fdatasync = EIO_FDATASYNC
		1103	aio_syncfs = EIO_SYNCFS
		1104	PPCODE:
		1105	{
		1106	int fd = s_fileno_croak (fh, 0);
		1107	dREQ;
		1108
		1109	req->type = ix;
		1110	req->sv1 = newSVsv (fh);
		1111	req->int1 = fd;
		1112
		1113	REQ_SEND;
		1114	}
		1115
		1116	void
		1117	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_SYNC_FILE_RANGE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->offs = offset;
738	res = sbytes;	1127	req->size = nbytes;
739	}	1128	req->int2 = flags;
740		1129
741	# endif	1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	int fd = s_fileno_croak (fh, 0);
		1138	dREQ;
		1139
		1140	req->type = EIO_FALLOCATE;
		1141	req->sv1 = newSVsv (fh);
		1142	req->int1 = fd;
		1143	req->int2 = mode;
		1144	req->offs = offset;
		1145	req->size = len;
		1146
		1147	REQ_SEND;
		1148	}
		1149
		1150	void
		1151	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1155	int fd = s_fileno_croak (fh, 0);
		1156	dREQ;
		1157
		1158	if (expect_false (close_fd < 0))
		1159	{
		1160	int pipefd [2];
		1161
		1162	if (
		1163	#ifdef _WIN32
		1164	_pipe (pipefd, 1, _O_BINARY) < 0
742	#else	1165	#else
743	res = -1;	1166	pipe (pipefd) < 0
744	errno = ENOSYS;	1167	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
745	#endif	1168	#endif
746		1169	|| 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	{	1170	)
768	if (cnt && !res) res = -1;	1171	abort (); /*D*/
769	break;
770	}
771		1172
772	cnt = write (ofd, aio_buf, cnt);	1173	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	}	1174	}
842	}
843		1175
844	errorno = errno;	1176	req->type = EIO_DUP2;
845	free (u);	1177	req->int1 = close_fd;
846	closedir (dirp);	1178	req->sv2 = newSVsv (fh);
		1179	req->int2 = fd;
847		1180
848	if (errorno)	1181	REQ_SEND;
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854
855	*namesp = (void *)names;
856	return res;
857	}	1182	}
858		1183
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	1184	void
1027	min_parallel (nthreads)	1185	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:	1186	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: $$$;$
1051	PPCODE:
1052	{	1187	{
		1188	int fd = s_fileno_croak (fh, 0);
1053	dREQ;	1189	dREQ;
1054		1190
1055	req->type = REQ_OPEN;	1191	req->type = EIO_SEEK;
1056	req->data = newSVsv (pathname);	1192	req->sv1 = newSVsv (fh);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1193	req->int1 = fd;
1058	req->fd = flags;	1194	req->offs = SvVAL64 (offset);
1059	req->mode = mode;	1195	req->int2 = whence;
1060		1196
1061	REQ_SEND;	1197	REQ_SEND;
1062	}	1198	}
1063		1199
1064	void	1200	void
1065	aio_close (fh,callback=&PL_sv_undef)	1201	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$
1069	ALIAS:	1202	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:
1074	{
1075	dREQ;
1076
1077	req->type = ix;
1078	req->fh = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080
1081	REQ_SEND (req);
1082	}
1083
1084	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:
1093	aio_read = REQ_READ	1203	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	1204	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$
1096	PPCODE:	1205	PPCODE:
1097	{	1206	{
1098	aio_req req;
1099	STRLEN svlen;	1207	STRLEN svlen;
		1208	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	1209	char *svptr = SvPVbyte (data, svlen);
1101		1210	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		1211
1105	if (dataoffset < 0)	1212	if (dataoffset < 0)
1106	dataoffset += svlen;	1213	dataoffset += svlen;
1107		1214
1108	if (dataoffset < 0 || dataoffset > svlen)	1215	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	1216	croak ("dataoffset outside of data scalar");
1110		1217
1111	if (ix == REQ_WRITE)	1218	if (ix == EIO_WRITE)
1112	{	1219	{
1113	/* write: check length and adjust. */	1220	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1221	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1222	len = svlen - dataoffset;
1116	}	1223	}
1117	else	1224	else
1118	{	1225	{
1119	/* read: grow scalar as necessary */	1226	/* read: check type and grow scalar as necessary */
		1227	SvUPGRADE (data, SVt_PV);
		1228	if (SvLEN (data) >= SvCUR (data))
1120	svptr = SvGROW (data, length + dataoffset);	1229	svptr = SvGROW (data, len + dataoffset + 1);
		1230	else if (SvCUR (data) < len + dataoffset)
		1231	croak ("length + dataoffset outside of scalar, and cannot grow");
1121	}	1232	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		1233
1126	{	1234	{
1127	dREQ;	1235	dREQ;
1128		1236
1129	req->type = ix;	1237	req->type = ix;
1130	req->fh = newSVsv (fh);	1238	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1239	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	1240	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1241	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1242	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1243	req->ptr2 = (char *)svptr + dataoffset;
		1244	req->stroffset = dataoffset;
1137		1245
1138	if (!SvREADONLY (data))	1246	if (!SvREADONLY (data))
1139	{	1247	{
1140	SvREADONLY_on (data);	1248	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1249	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1250	}
1143		1251
1144	REQ_SEND;	1252	REQ_SEND;
1145	}	1253	}
1146	}	1254	}
1147		1255
1148	void	1256	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1257	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * out_fh	1258	ALIAS:
1151	SV * in_fh	1259	aio_readlink = EIO_READLINK
1152	UV in_offset	1260	aio_realpath = EIO_REALPATH
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$
1156	PPCODE:	1261	PPCODE:
1157	{	1262	{
		1263	dREQ;
		1264
		1265	req->type = ix;
		1266	req_set_path1 (req, pathname);
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	int ifd = s_fileno_croak (in_fh , 0);
		1276	int ofd = s_fileno_croak (out_fh, 1);
1158	dREQ;	1277	dREQ;
1159		1278
1160	req->type = REQ_SENDFILE;	1279	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1280	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1281	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	1282	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1283	req->int2 = ifd;
1165	req->offset = in_offset;	1284	req->offs = in_offset;
1166	req->length = length;	1285	req->size = length;
1167		1286
1168	REQ_SEND;	1287	REQ_SEND;
1169	}	1288	}
1170		1289
1171	void	1290	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1291	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$
1178	PPCODE:	1292	PPCODE:
1179	{	1293	{
		1294	int fd = s_fileno_croak (fh, 0);
1180	dREQ;	1295	dREQ;
1181		1296
1182	req->type = REQ_READAHEAD;	1297	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	1298	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1299	req->int1 = fd;
1185	req->offset = offset;	1300	req->offs = offset;
1186	req->length = length;	1301	req->size = length;
1187		1302
1188	REQ_SEND;	1303	REQ_SEND;
1189	}	1304	}
1190		1305
1191	void	1306	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1307	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1308	ALIAS:
1196	aio_stat = REQ_STAT	1309	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	1310	aio_lstat = EIO_LSTAT
		1311	aio_statvfs = EIO_STATVFS
1198	PPCODE:	1312	PPCODE:
1199	{	1313	{
1200	dREQ;	1314	dREQ;
1201		1315
1202	New (0, req->statdata, 1, Stat_t);	1316	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		1317
1222	REQ_SEND;	1318	REQ_SEND;
1223	}	1319	}
1224		1320
		1321	UV
		1322	major (UV dev)
		1323	ALIAS:
		1324	minor = 1
		1325	CODE:
		1326	RETVAL = ix ? major (dev) : minor (dev);
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	UV
		1331	makedev (UV maj, UV min)
		1332	CODE:
		1333	RETVAL = makedev (maj, min);
		1334	OUTPUT:
		1335	RETVAL
		1336
1225	void	1337	void
		1338	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1339	PPCODE:
		1340	{
		1341	dREQ;
		1342
		1343	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1344	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1345	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1346
		1347	REQ_SEND;
		1348	}
		1349
		1350	void
		1351	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1352	PPCODE:
		1353	{
		1354	dREQ;
		1355
		1356	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1357	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1358
		1359	REQ_SEND;
		1360	}
		1361
		1362	void
		1363	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->int2 = mode;
		1369	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
		1375	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	dREQ;
		1379
		1380	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1381	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1382	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	dREQ;
		1392
		1393	req->type = EIO_READDIR;
		1394	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1395
		1396	if (flags & EIO_READDIR_DENTS)
		1397	req->int1 |= EIO_READDIR_CUSTOM2;
		1398
		1399	req_set_path1 (req, pathname);
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	dREQ;
		1409
		1410	req->type = EIO_MKDIR;
		1411	req->int2 = mode;
		1412	req_set_path1 (req, pathname);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1418	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1419	ALIAS:
1230	aio_unlink = REQ_UNLINK	1420	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1421	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1422	aio_readdir = EIO_READDIR
1233	PPCODE:	1423	PPCODE:
1234	{	1424	{
1235	dREQ;	1425	dREQ;
1236		1426
1237	req->type = ix;	1427	req->type = ix;
1238	req->data = newSVsv (pathname);	1428	req_set_path1 (req, pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1429
1240
1241	REQ_SEND;	1430	REQ_SEND;
1242	}	1431	}
1243		1432
1244	void	1433	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1434	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1435	ALIAS:
1250	aio_link = REQ_LINK	1436	aio_link = EIO_LINK
1251	aio_symlink = REQ_SYMLINK	1437	aio_symlink = EIO_SYMLINK
1252	aio_rename = REQ_RENAME	1438	aio_rename = EIO_RENAME
1253	PPCODE:	1439	PPCODE:
1254	{	1440	{
		1441	eio_wd wd2 = 0;
1255	dREQ;	1442	dREQ;
1256		1443
1257	req->type = ix;	1444	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1445	req_set_path1 (req, oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1446	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1260	req->data = newSVsv (newpath);	1447	req->int3 = (long)wd2;
1261	req->dataptr = SvPVbyte_nolen (req->data);
1262		1448
1263	REQ_SEND;	1449	REQ_SEND;
1264	}	1450	}
1265		1451
1266	void	1452	void
1267	aio_busy (delay,callback=&PL_sv_undef)	1453	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1454	PPCODE:
1271	{	1455	{
1272	dREQ;	1456	dREQ;
1273		1457
1274	req->type = REQ_BUSY;	1458	req->type = EIO_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1459	req->int2 = (mode_t)mode;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1460	req->offs = dev;
1277		1461	req_set_path1 (req, pathname);
		1462
1278	REQ_SEND;	1463	REQ_SEND;
1279	}	1464	}
1280		1465
1281	void	1466	void
1282	aio_group (callback=&PL_sv_undef)	1467	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1283	SV * callback	1468	ALIAS:
1284	PROTOTYPE: ;$	1469	aio_mtouch = EIO_MTOUCH
		1470	aio_msync = EIO_MSYNC
1285	PPCODE:	1471	PPCODE:
1286	{	1472	{
		1473	STRLEN svlen;
		1474	char *svptr = SvPVbyte (data, svlen);
		1475	UV len = SvUV (length);
		1476
		1477	if (offset < 0)
		1478	offset += svlen;
		1479
		1480	if (offset < 0 || offset > svlen)
		1481	croak ("offset outside of scalar");
		1482
		1483	if (!SvOK (length) || len + offset > svlen)
		1484	len = svlen - offset;
		1485
		1486	{
		1487	dREQ;
		1488
		1489	req->type = ix;
		1490	req->sv2 = SvREFCNT_inc (data);
		1491	req->ptr2 = (char *)svptr + offset;
		1492	req->size = len;
		1493	req->int1 = flags;
		1494
		1495	REQ_SEND;
		1496	}
		1497	}
		1498
		1499	void
		1500	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1501	PPCODE:
		1502	{
		1503	STRLEN svlen;
		1504	char *svptr = SvPVbyte (data, svlen);
		1505	UV len = SvUV (length);
		1506
		1507	if (offset < 0)
		1508	offset += svlen;
		1509
		1510	if (offset < 0 || offset > svlen)
		1511	croak ("offset outside of scalar");
		1512
		1513	if (!SvOK (length) || len + offset > svlen)
		1514	len = svlen - offset;
		1515
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCK;
		1520	req->sv2 = SvREFCNT_inc (data);
		1521	req->ptr2 = (char *)svptr + offset;
		1522	req->size = len;
		1523
		1524	REQ_SEND;
		1525	}
		1526	}
		1527
		1528	void
		1529	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1530	PPCODE:
		1531	{
		1532	dREQ;
		1533
		1534	req->type = EIO_MLOCKALL;
		1535	req->int1 = flags;
		1536
		1537	REQ_SEND;
		1538	}
		1539
		1540	void
		1541	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	int fd = s_fileno_croak (fh, 0);
1287	dREQ;	1545	dREQ;
1288		1546
1289	req->type = REQ_GROUP;	1547	req->type = EIO_CUSTOM;
1290	req_send (req);	1548	req->sv1 = newSVsv (fh);
		1549	req->int1 = fd;
1291		1550
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1551	req->feed = fiemap;
1293	}	1552	#if HAVE_FIEMAP
		1553	/* keep our fingers crossed that the next two types are 64 bit */
		1554	req->offs = start;
		1555	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1556	req->int2 = flags;
		1557	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1558	#endif
1294		1559
		1560	REQ_SEND;
		1561	}
		1562
1295	void	1563	void
1296	aio_nop (callback=&PL_sv_undef)	1564	aio_busy (double delay, SV *callback=&PL_sv_undef)
1297	SV * callback
1298	PPCODE:	1565	PPCODE:
1299	{	1566	{
1300	dREQ;	1567	dREQ;
1301		1568
1302	req->type = REQ_NOP;	1569	req->type = EIO_BUSY;
		1570	req->nv1 = delay < 0. ? 0. : delay;
1303		1571
1304	REQ_SEND;	1572	REQ_SEND;
1305	}	1573	}
1306		1574
1307	void	1575	void
1308	aioreq_pri (int pri = DEFAULT_PRI)	1576	aio_group (SV *callback=&PL_sv_undef)
1309	CODE:	1577	PPCODE:
		1578	{
		1579	dREQ;
		1580
		1581	req->type = EIO_GROUP;
		1582
		1583	req_submit (req);
		1584	XPUSHs (req_sv (req, aio_grp_stash));
		1585	}
		1586
		1587	void
		1588	aio_nop (SV *callback=&PL_sv_undef)
		1589	ALIAS:
		1590	aio_nop = EIO_NOP
		1591	aio_sync = EIO_SYNC
		1592	PPCODE:
		1593	{
		1594	dREQ;
		1595
		1596	req->type = ix;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	int
		1602	aioreq_pri (int pri = 0)
		1603	CODE:
		1604	RETVAL = next_pri;
		1605	if (items > 0)
		1606	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1607	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1608	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1609	next_pri = pri;
		1610	}
		1611	OUTPUT:
		1612	RETVAL
1313		1613
1314	void	1614	void
1315	aioreq_nice (int nice = 0)	1615	aioreq_nice (int nice = 0)
1316	CODE:	1616	CODE:
1317	nice = next_pri - nice;	1617	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1618	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1619	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1620	next_pri = nice;
1321		1621
1322	void	1622	void
1323	flush ()	1623	flush ()
1324	PROTOTYPE:
1325	CODE:	1624	CODE:
1326	while (nreqs)	1625	while (eio_nreqs ())
1327	{	1626	{
1328	poll_wait ();	1627	poll_wait ();
1329	poll_cb ();	1628	poll_cb ();
1330	}	1629	}
1331		1630
1332	void	1631	int
1333	poll()	1632	poll ()
1334	PROTOTYPE:
1335	CODE:	1633	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1634	poll_wait ();
1339	poll_cb ();	1635	RETVAL = poll_cb ();
1340	}
1341
1342	int
1343	poll_fileno()
1344	PROTOTYPE:
1345	CODE:
1346	RETVAL = respipe [0];
1347	OUTPUT:	1636	OUTPUT:
1348	RETVAL	1637	RETVAL
1349		1638
1350	int	1639	int
		1640	poll_fileno ()
		1641	CODE:
		1642	RETVAL = s_epipe_fd (&respipe);
		1643	OUTPUT:
		1644	RETVAL
		1645
		1646	int
1351	poll_cb(...)	1647	poll_cb (...)
1352	PROTOTYPE:	1648	PROTOTYPE:
1353	CODE:	1649	CODE:
1354	RETVAL = poll_cb ();	1650	RETVAL = poll_cb ();
1355	OUTPUT:	1651	OUTPUT:
1356	RETVAL	1652	RETVAL
1357		1653
1358	void	1654	void
1359	poll_wait()	1655	poll_wait ()
1360	PROTOTYPE:
1361	CODE:	1656	CODE:
1362	if (nreqs)
1363	poll_wait ();	1657	poll_wait ();
1364		1658
1365	int	1659	int
1366	nreqs()	1660	nreqs ()
1367	PROTOTYPE:
1368	CODE:	1661	CODE:
1369	RETVAL = nreqs;	1662	RETVAL = eio_nreqs ();
1370	OUTPUT:	1663	OUTPUT:
1371	RETVAL	1664	RETVAL
1372		1665
		1666	int
		1667	nready ()
		1668	CODE:
		1669	RETVAL = eio_nready ();
		1670	OUTPUT:
		1671	RETVAL
		1672
		1673	int
		1674	npending ()
		1675	CODE:
		1676	RETVAL = eio_npending ();
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	int
		1681	nthreads ()
		1682	CODE:
		1683	RETVAL = eio_nthreads ();
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	int
		1688	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1689	CODE:
		1690	RETVAL = posix_fadvise (fh, offset, length, advice);
		1691	OUTPUT:
		1692	RETVAL
		1693
		1694	IV
		1695	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1696	CODE:
		1697	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701	void
		1702	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1703	PPCODE:
		1704	sv_unmagic (scalar, MMAP_MAGIC);
		1705	{
		1706	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1707	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1708	if (addr == (void *)-1)
		1709	XSRETURN_NO;
		1710
		1711	sv_force_normal (scalar);
		1712
		1713	/* we store the length in mg_obj, as namlen is I32 :/ */
		1714	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1715	->mg_obj = (SV *)length;
		1716
		1717	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1718
		1719	if (!(prot & PROT_WRITE))
		1720	SvREADONLY_on (scalar);
		1721
		1722	if (SvLEN (scalar))
		1723	Safefree (SvPVX (scalar));
		1724
		1725	SvPVX (scalar) = (char *)addr;
		1726	SvCUR_set (scalar, length);
		1727	SvLEN_set (scalar, 0);
		1728	SvPOK_only (scalar);
		1729
		1730	XSRETURN_YES;
		1731	}
		1732
		1733	void
		1734	munmap (SV *scalar)
		1735	CODE:
		1736	sv_unmagic (scalar, MMAP_MAGIC);
		1737
		1738	int
		1739	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1740	ALIAS:
		1741	mprotect = 1
		1742	CODE:
		1743	{
		1744	STRLEN svlen;
		1745	void *addr = SvPVbyte (scalar, svlen);
		1746	size_t len = SvUV (length);
		1747
		1748	if (offset < 0)
		1749	offset += svlen;
		1750
		1751	if (offset < 0 || offset > svlen)
		1752	croak ("offset outside of scalar");
		1753
		1754	if (!SvOK (length) || len + offset > svlen)
		1755	len = svlen - offset;
		1756
		1757	addr = (void *)(((intptr_t)addr) + offset);
		1758	eio_page_align (&addr, &len);
		1759
		1760	switch (ix)
		1761	{
		1762	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1763	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1764	}
		1765	}
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769	int
		1770	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1771	CODE:
		1772	{
		1773	STRLEN svlen;
		1774	void *addr = SvPVbyte (scalar, svlen);
		1775	size_t len = SvUV (length);
		1776
		1777	if (offset < 0)
		1778	offset += svlen;
		1779
		1780	if (offset < 0 || offset > svlen)
		1781	croak ("offset outside of scalar");
		1782
		1783	if (!SvOK (length) || len + offset > svlen)
		1784	len = svlen - offset;
		1785
		1786	addr = (void *)(((intptr_t)addr) + offset);
		1787	eio_page_align (&addr, &len);
		1788	#if _POSIX_MEMLOCK_RANGE
		1789	RETVAL = munlock (addr, len);
		1790	#else
		1791	RETVAL = EIO_ENOSYS ();
		1792	#endif
		1793	}
		1794	OUTPUT:
		1795	RETVAL
		1796
		1797	int
		1798	munlockall ()
		1799	CODE:
		1800	#if _POSIX_MEMLOCK
		1801	munlockall ();
		1802	#else
		1803	RETVAL = EIO_ENOSYS ();
		1804	#endif
		1805	OUTPUT:
		1806	RETVAL
		1807
		1808	int
		1809	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1810	CODE:
		1811	{
		1812	#if HAVE_LINUX_SPLICE
		1813	loff_t off_in_, off_out_;
		1814	RETVAL = splice (
		1815	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1816	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1817	length, flags
		1818	);
		1819	#else
		1820	RETVAL = EIO_ENOSYS ();
		1821	#endif
		1822	}
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	int
		1827	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1828	CODE:
		1829	#if HAVE_LINUX_SPLICE
		1830	RETVAL = tee (rfh, wfh, length, flags);
		1831	#else
		1832	RETVAL = EIO_ENOSYS ();
		1833	#endif
		1834	OUTPUT:
		1835	RETVAL
		1836
		1837	void _on_next_submit (SV *cb)
		1838	CODE:
		1839	SvREFCNT_dec (on_next_submit);
		1840	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1841
1373	PROTOTYPES: DISABLE	1842	PROTOTYPES: DISABLE
		1843
		1844	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1845
		1846	BOOT:
		1847	{
		1848	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1849	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1850	}
		1851
		1852	void
		1853	DESTROY (SV *self)
		1854	CODE:
		1855	{
		1856	aio_wd wd = SvAIO_WD (self);
		1857	#if HAVE_AT
		1858	{
		1859	SV *callback = &PL_sv_undef;
		1860	dREQ; /* clobbers next_pri :/ */
		1861	next_pri = req->pri; /* restore next_pri */
		1862	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1863	req->type = EIO_WD_CLOSE;
		1864	req->wd = wd;
		1865	REQ_SEND;
		1866	}
		1867	#else
		1868	eio_wd_close_sync (wd);
		1869	#endif
		1870	}
1374		1871
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1872	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1873
1377	void	1874	void
1378	cancel (aio_req_ornot req)	1875	cancel (aio_req_ornot req)
1379	CODE:	1876	CODE:
1380	req_cancel (req);	1877	eio_cancel (req);
1381		1878
1382	void	1879	void
1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1880	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1384	CODE:	1881	PPCODE:
		1882	{
		1883	if (GIMME_V != G_VOID)
		1884	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1885
		1886	if (items > 1)
		1887	{
		1888	SV *cb_cv =get_cb (callback);
		1889
1385	SvREFCNT_dec (req->callback);	1890	SvREFCNT_dec (req->callback);
1386	req->callback = newSVsv (callback);	1891	req->callback = SvREFCNT_inc (cb_cv);
		1892	}
		1893	}
1387		1894
1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1895	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1389		1896
1390	void	1897	void
1391	add (aio_req grp, ...)	1898	add (aio_req grp, ...)
1392	PPCODE:	1899	PPCODE:
1393	{	1900	{
1394	int i;	1901	int i;
1395	aio_req req;
1396		1902
1397	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1905
1400	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1401	{	1907	{
		1908	aio_req req;
		1909
1402	if (GIMME_V != G_VOID)	1910	if (GIMME_V != G_VOID)
1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1911	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1404		1912
1405	req = SvAIO_REQ (ST (i));	1913	req = SvAIO_REQ (ST (i));
1406		1914
1407	if (req)	1915	if (req)
1408	{	1916	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	}	1917	}
1421	}	1918	}
		1919
		1920	void
		1921	cancel_subs (aio_req_ornot req)
		1922	CODE:
		1923	req_cancel_subs (req);
1422		1924
1423	void	1925	void
1424	result (aio_req grp, ...)	1926	result (aio_req grp, ...)
1425	CODE:	1927	CODE:
1426	{	1928	{
1427	int i;	1929	int i;
		1930	AV *av;
		1931
		1932	grp->errorno = errno;
		1933
1428	AV *av = newAV ();	1934	av = newAV ();
		1935	av_extend (av, items - 1);
1429		1936
1430	for (i = 1; i < items; ++i )	1937	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1938	av_push (av, newSVsv (ST (i)));
1432		1939
1433	SvREFCNT_dec (grp->data);	1940	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1941	grp->sv1 = (SV *)av;
1435	}	1942	}
		1943
		1944	void
		1945	errno (aio_req grp, int errorno = errno)
		1946	CODE:
		1947	grp->errorno = errorno;
1436		1948
1437	void	1949	void
1438	limit (aio_req grp, int limit)	1950	limit (aio_req grp, int limit)
1439	CODE:	1951	CODE:
1440	grp->fd2 = limit;	1952	eio_grp_limit (grp, limit);
1441	aio_grp_feed (grp);
1442		1953
1443	void	1954	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1955	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1956	CODE:
1446	{	1957	{
1447	SvREFCNT_dec (grp->fh2);	1958	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1959	grp->sv2 = newSVsv (callback);
		1960	grp->feed = aio_grp_feed;
1449		1961
1450	if (grp->fd2 <= 0)	1962	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1963	grp->int2 = 2;
1452		1964
1453	aio_grp_feed (grp);	1965	eio_grp_limit (grp, grp->int2);
1454	}	1966	}
1455		1967

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