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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.215 by root, Sun Jun 17 17:07:25 2012 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
33	# 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>
34	# include <sys/sendfile.h>	82	#include <sys/select.h>
35	# elif __freebsd	83	#include <unistd.h>
36	# include <sys/socket.h>	84	#include <utime.h>
37	# include <sys/uio.h>	85	#include <signal.h>
38	# elif __hpux	86
39	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
40	# elif __solaris /* not yet */	88
41	# 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
42	# else	140	# else
43	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	142	# endif
45	#endif	143	#endif
46		144
47	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
48	#ifndef NAME_MAX	146	#include "def0.h"
49	# define NAME_MAX 4096
50	#endif
51		147
52	#if __ia64	148	#ifndef makedev
53	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	150	#endif
55	# 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
56	#else	215	#else
57	# define STACKSIZE 16384	216	errno = ENOSYS;
58	#endif	217	#endif
		218	}
59		219
60	/* buffer size for various temporary buffers */	220	/*****************************************************************************/
61	#define AIO_BUFSIZE 65536
62
63	#define dBUF \
64	char *aio_buf; \
65	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		221
71	enum {	222	enum {
72	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	224	};
84		225
85	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
119		229
120	enum {	230	static SV *on_next_submit;
121	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,	232	static int max_outstanding;
123		233
124	DEFAULT_PRI = 0,	234	static s_epipe respipe;
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128		235
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146
147	typedef struct worker {
148	/* locked by wrklock */
149	struct worker *prev, *next;
150
151	pthread_t tid;
152
153	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */
155	void *dbuf;
156	DIR *dirp;
157	} worker;
158
159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
160
161	static void worker_clear (worker *wrk)
162	{
163	if (wrk->dirp)
164	{
165	closedir (wrk->dirp);
166	wrk->dirp = 0;
167	}
168
169	if (wrk->dbuf)
170	{
171	free (wrk->dbuf);
172	wrk->dbuf = 0;
173	}
174	}
175
176	static void worker_free (worker *wrk)
177	{
178	wrk->next->prev = wrk->prev;
179	wrk->prev->next = wrk->next;
180
181	free (wrk);
182	}
183
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
187
188	/*
189	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.
192	*/
193	typedef struct {
194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
195	int size;
196	} reqq;
197
198	static reqq req_queue;
199	static reqq res_queue;
200
201	int reqq_push (reqq *q, aio_req req)
202	{
203	int pri = req->pri;
204	req->next = 0;
205
206	if (q->qe[pri])
207	{
208	q->qe[pri]->next = req;
209	q->qe[pri] = req;
210	}
211	else
212	q->qe[pri] = q->qs[pri] = req;
213
214	return q->size++;
215	}
216
217	aio_req reqq_shift (reqq *q)
218	{
219	int pri;
220
221	if (!q->size)
222	return 0;
223
224	--q->size;
225
226	for (pri = NUM_PRI; pri--; )
227	{
228	aio_req req = q->qs[pri];
229
230	if (req)
231	{
232	if (!(q->qs[pri] = req->next))
233	q->qe[pri] = 0;
234
235	return req;
236	}
237	}
238
239	abort ();
240	}
241
242	static int poll_cb ();
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	236	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
246		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	}
		252
247	/* must be called at most once */	253	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
249	{	256	{
250	if (!req->self)	257	if (!req->self)
251	{	258	{
252	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	261	}
255		262
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	264	}
258		265
259	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)
260	{	274	{
261	MAGIC *mg;	275	MAGIC *mg;
262		276
263	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")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
265		283
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		285
268	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	287	}
270		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
271	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
272	{	302	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
274	{	304	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	305	dSP;
280		306
281	ENTER;	307	ENTER;
282	SAVETMPS;	308	SAVETMPS;
283	PUSHMARK (SP);	309	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	311	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	313	SPAGAIN;
288	FREETMPS;	314	FREETMPS;
289	LEAVE;	315	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	316	}
300	}	317	}
301		318
302	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
303	{	321	{
304	--grp->length;	322	eio_submit (req);
305		323
306	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	325	{
312	req_invoke (grp);	326	dSP;
313	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);
314	}	334	}
315	}	335	}
316		336
317	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
318	{	339	{
319	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
320		342
321	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
322	{	344	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;	345	dSP;
345		346	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	347	SV *sv_result;
347	{
348	errno = req->errorno;
349		348
350	ENTER;	349	ENTER;
351	SAVETMPS;	350	SAVETMPS;
352	PUSHMARK (SP);	351	PUSHMARK (SP);
353	EXTEND (SP, 1);	352	EXTEND (SP, 1);
354		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
355	switch (req->type)	367	switch (req->type)
356	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
357	case REQ_READDIR:	373	case EIO_READDIR:
358	{	374	{
359	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
360		376
361	if (req->result >= 0)	377	if (req->result >= 0)
362	{	378	{
363	int i;	379	int i;
364	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	382	AV *av = newAV ();
366		383
367	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
368		385
369	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
370	{	387	{
371	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		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
373	av_store (av, i, sv);	412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
375	}	422	}
376		423
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	425	}
379		426
380	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))));
381	}	431	}
382	break;	432	break;
383		433
384	case REQ_OPEN:	434	case EIO_OPEN:
385	{	435	{
386	/* convert fd to fh */	436	/* convert fd to fh */
387	SV *fh;	437	SV *fh = &PL_sv_undef;
388		438
389	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
390	PUTBACK;	440	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
392	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);
393		448
394	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	);
395		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
396	PUSHMARK (SP);	461	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	462	}
399	break;	463	break;
400		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
401	case REQ_GROUP:	497	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
403		499
404	if (req->data)	500	if (req->sv1)
405	{	501	{
406	int i;	502	int i;
407	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
408		504
409	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
412	}	508	}
413	break;	509	break;
414		510
415	case REQ_NOP:	511	case EIO_NOP:
416	case REQ_BUSY:	512	case EIO_BUSY:
417	break;	513	break;
418		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
419	default:	592	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
421	break;	594	break;
422	}	595	}
423		596
		597	errno = req->errorno;
424		598
425	PUTBACK;	599	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	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;
428		607
429	FREETMPS;	608	FREETMPS;
430	LEAVE;	609	LEAVE;
		610
		611	PUTBACK;
431	}	612	}
432		613
433	if (req->grp)	614	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	615	}
453		616
454	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
455	{	619	{
456	if (req->self)	620	if (req->self)
457	{	621	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
460	}	624	}
461		625
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		631
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470
471	Safefree (req);	632	free (req);
472	}	633	}
473		634
		635	static void
474	static void req_cancel_subs (aio_req grp)	636	req_cancel_subs (aio_req grp)
475	{	637	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	638	if (grp->type != EIO_GROUP)
479	return;	639	return;
480		640
481	SvREFCNT_dec (grp->fh2);	641	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	642	grp->sv2 = 0;
483		643
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	644	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	645	}
487		646
488	static void req_cancel (aio_req req)	647	static void ecb_cold
		648	create_respipe (void)
489	{	649	{
490	req->flags |= FLAG_CANCELLED;	650	if (s_epipe_renew (&respipe))
491		651	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	652	}
494		653
495	static int poll_cb ()	654	static void
		655	poll_wait (void)
496	{	656	{
497	dSP;	657	while (eio_nreqs ())
498	int count = 0;	658	{
499	int do_croak = 0;	659	int size;
500	aio_req req;
501		660
		661	X_LOCK (reslock);
		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);
		671	}
		672	}
		673
		674	static int
		675	poll_cb (void)
		676	{
502	for (;;)	677	for (;;)
503	{	678	{
504	LOCK (reslock);	679	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		680
507	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)
508	{	792	{
509	if (!res_queue.size)	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
		795
		796	if (SvOK (wdob))
510	{	797	{
511	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
512	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
516	}	803	}
517		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{	805	{
529	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
530	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
531	}	810	}
532	else	811	else
533	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	813	}
554		814
555	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
556	}	817	}
557		818
558	static void *aio_proc(void *arg);	819	static void ecb_noinline
559		820	req_set_path1 (aio_req req, SV *path)
560	static void start_thread (void)
561	{	821	{
562	sigset_t fullsigset, oldsigset;	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
563	pthread_attr_t attr;	823	}
564		824
565	worker *wrk = calloc (1, sizeof (worker));	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		827	{
		828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566		829
567	if (!wrk)	830	switch (SvTYPE (rv))
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{	831	{
581	wrk->prev = &wrk_first;	832	case SVt_PVIO:
582	wrk->next = wrk_first.next;	833	case SVt_PVLV:
583	wrk_first.next->prev = wrk;	834	case SVt_PVGV:
584	wrk_first.next = wrk;	835	req->type = type_fh;
585	started++;	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;
586	}	844	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	845	}
593		846
594	static void req_send (aio_req req)	847	XS(boot_IO__AIO) ecb_cold;
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598		848
599	++nreqs;	849	MODULE = IO::AIO PACKAGE = IO::AIO
600		850
601	LOCK (reqlock);	851	PROTOTYPES: ENABLE
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605	}
606		852
607	static void end_thread (void)	853	BOOT:
608	{	854	{
609	aio_req req;	855	static const struct {
		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 },
610		862
611	Newz (0, req, 1, aio_cb);	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
612		864
613	req->type = REQ_QUIT;	865	const_iv (ENOSYS)
614	req->pri = PRI_MAX + PRI_BIAS;	866	const_iv (EXDEV)
		867	const_iv (EBADR)
615		868
616	req_send (req);	869	const_iv (O_RDONLY)
617	}	870	const_iv (O_WRONLY)
		871	const_iv (O_RDWR)
		872	const_iv (O_CREAT)
		873	const_iv (O_TRUNC)
		874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
618		876
619	static void min_parallel (int nthreads)	877	const_iv (O_ASYNC)
620	{	878	const_iv (O_DIRECT)
621	if (wanted < nthreads)	879	const_iv (O_NOATIME)
622	wanted = nthreads;
623	}
624		880
625	static void max_parallel (int nthreads)	881	const_iv (O_CLOEXEC)
626	{	882	const_iv (O_NOCTTY)
627	int cur = started;	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)
628		892
629	if (wanted > nthreads)	893	const_iv (S_IFIFO)
630	wanted = nthreads;	894	const_iv (S_IFCHR)
		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)
631		902
632	while (cur > wanted)	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
633	{	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
634	end_thread ();	905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
635	cur--;	906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
636	}	907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
637		909
638	while (started > wanted)	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
639	{	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
640	poll_wait ();	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
641	poll_cb ();	913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
642	}	914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
643	}
644		915
645	static void create_pipe ()	916	const_iv (ST_RDONLY)
646	{	917	const_iv (ST_NOSUID)
647	if (pipe (respipe))	918	const_iv (ST_NODEV)
648	croak ("unable to initialize result pipe");	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)
649		928
650	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	929	const_iv (PROT_NONE)
651	croak ("cannot set result pipe to nonblocking mode");	930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
652		933
653	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	934	/*const_iv (MAP_FIXED)*/
654	croak ("cannot set result pipe to nonblocking mode");	935	const_iv (MAP_PRIVATE)
655	}	936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
656		938
657	/*****************************************************************************/	939	/* linuxish */
658	/* work around various missing functions */	940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
659		945
660	#if !HAVE_PREADWRITE	946	const_iv (FIEMAP_FLAG_SYNC)
661	# define pread aio_pread	947	const_iv (FIEMAP_FLAG_XATTR)
662	# define pwrite aio_pwrite	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)
663		960
664	/*	961	const_iv (SPLICE_F_MOVE)
665	* make our pread/pwrite safe against themselves, but not against	962	const_iv (SPLICE_F_NONBLOCK)
666	* normal read/write by using a mutex. slows down execution a lot,	963	const_iv (SPLICE_F_MORE)
667	* but that's your problem, not mine.	964	const_iv (SPLICE_F_GIFT)
668	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
670		965
671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	966	const_iv (SEEK_DATA)
672	{	967	const_iv (SEEK_HOLE)
673	ssize_t res;
674	off_t ooffset;
675		968
676	LOCK (preadwritelock);	969	/* libeio constants */
677	ooffset = lseek (fd, 0, SEEK_CUR);	970	const_eio (SEEK_SET)
678	lseek (fd, offset, SEEK_SET);	971	const_eio (SEEK_CUR)
679	res = read (fd, buf, count);	972	const_eio (SEEK_END)
680	lseek (fd, ooffset, SEEK_SET);
681	UNLOCK (preadwritelock);
682		973
683	return res;	974	const_eio (MCL_FUTURE)
684	}	975	const_eio (MCL_CURRENT)
685		976
686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	977	const_eio (MS_ASYNC)
687	{	978	const_eio (MS_INVALIDATE)
688	ssize_t res;	979	const_eio (MS_SYNC)
689	off_t ooffset;
690		980
691	LOCK (preadwritelock);	981	const_eio (MT_MODIFY)
692	ooffset = lseek (fd, 0, SEEK_CUR);
693	lseek (fd, offset, SEEK_SET);
694	res = write (fd, buf, count);
695	lseek (fd, offset, SEEK_SET);
696	UNLOCK (preadwritelock);
697		982
698	return res;	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
699	}	984	const_eio (SYNC_FILE_RANGE_WRITE)
700	#endif	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
701		986
702	#if !HAVE_FDATASYNC	987	const_eio (FALLOC_FL_KEEP_SIZE)
703	# define fdatasync fsync
704	#endif
705		988
706	#if !HAVE_READAHEAD	989	const_eio (READDIR_DENTS)
707	# define readahead aio_readahead	990	const_eio (READDIR_DIRS_FIRST)
		991	const_eio (READDIR_STAT_ORDER)
		992	const_eio (READDIR_FOUND_UNKNOWN)
708		993
709	static ssize_t readahead (int fd, off_t offset, size_t count)	994	const_eio (DT_UNKNOWN)
710	{	995	const_eio (DT_FIFO)
711	dBUF;	996	const_eio (DT_CHR)
712		997	const_eio (DT_DIR)
713	while (count > 0)	998	const_eio (DT_BLK)
714	{	999	const_eio (DT_REG)
715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	1000	const_eio (DT_LNK)
716		1001	const_eio (DT_SOCK)
717	pread (fd, aio_buf, len, offset);	1002	const_eio (DT_WHT)
718	offset += len;
719	count -= len;
720	}
721
722	errno = 0;
723	}
724	#endif
725
726	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r
728
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
730
731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732	{
733	struct dirent *e;
734	int errorno;
735
736	LOCK (readdirlock);
737
738	e = readdir (dirp);
739	errorno = errno;
740
741	if (e)
742	{
743	*res = ent;
744	strcpy (ent->d_name, e->d_name);
745	}
746	else
747	*res = 0;
748
749	UNLOCK (readdirlock);
750
751	errno = errorno;
752	return e ? 0 : -1;
753	}
754	#endif
755
756	/* sendfile always needs emulation */
757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
758	{
759	ssize_t res;
760
761	if (!count)
762	return 0;
763
764	#if HAVE_SENDFILE
765	# if __linux
766	res = sendfile (ofd, ifd, &offset, count);
767
768	# elif __freebsd
769	/*
770	* Of course, the freebsd sendfile is a dire hack with no thoughts
771	* wasted on making it similar to other I/O functions.
772	*/
773	{
774	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776
777	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
779	res = sbytes;
780	}	1003	};
781		1004
782	# elif __hpux	1005	aio_stash = gv_stashpv ("IO::AIO" , 1);
783	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);
784		1009
785	# elif __solaris	1010	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
786	{	1011	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
787	struct sendfilevec vec;
788	size_t sbytes;
789		1012
790	vec.sfv_fd = ifd;	1013	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
791	vec.sfv_flag = 0;
792	vec.sfv_off = offset;
793	vec.sfv_len = count;
794		1014
795	res = sendfilev (ofd, &vec, 1, &sbytes);	1015	reinit ();
		1016	}
796		1017
797	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;
798	res = sbytes;	1119	req->size = nbytes;
799	}	1120	req->int2 = flags;
800		1121
801	# 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
802	#else	1157	#else
803	res = -1;	1158	pipe (pipefd) < 0
804	errno = ENOSYS;	1159	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
805	#endif	1160	#endif
806		1161	|| close (pipefd [1]) < 0
807	if (res < 0
808	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
809	#if __solaris
810	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
811	#endif
812	)
813	)
814	{
815	/* emulate sendfile. this is a major pain in the ass */
816	dBUF;
817
818	res = 0;
819
820	while (count)
821	{
822	ssize_t cnt;
823
824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
825
826	if (cnt <= 0)
827	{	1162	)
828	if (cnt && !res) res = -1;	1163	abort (); /*D*/
829	break;
830	}
831		1164
832	cnt = write (ofd, aio_buf, cnt);	1165	close_fd = pipefd [0];
833
834	if (cnt <= 0)
835	{
836	if (cnt && !res) res = -1;
837	break;
838	}
839
840	offset += cnt;
841	res += cnt;
842	count -= cnt;
843	}
844	}
845
846	return res;
847	}
848
849	/* read a full directory */
850	static void scandir_ (aio_req req, worker *self)
851	{
852	DIR *dirp;
853	union
854	{
855	struct dirent d;
856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
857	} *u;
858	struct dirent *entp;
859	char *name, *names;
860	int memlen = 4096;
861	int memofs = 0;
862	int res = 0;
863	int errorno;
864
865	LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);
867	self->dbuf = u = malloc (sizeof (*u));
868	UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871
872	if (dirp && u && names)
873	for (;;)
874	{
875	errno = 0;
876	readdir_r (dirp, &u->d, &entp);
877
878	if (!entp)
879	break;
880
881	name = entp->d_name;
882
883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
884	{
885	int len = strlen (name) + 1;
886
887	res++;
888
889	while (memofs + len > memlen)
890	{
891	memlen *= 2;
892	LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);
894	UNLOCK (wrklock);
895
896	if (!names)
897	break;
898	}
899
900	memcpy (names + memofs, name, len);
901	memofs += len;
902	}	1166	}
903	}
904		1167
905	if (errno)	1168	req->type = EIO_DUP2;
906	res = -1;	1169	req->int1 = close_fd;
907		1170	req->sv2 = newSVsv (fh);
908	req->result = res;	1171	req->int2 = fd;
909	}
910		1172
911	/*****************************************************************************/	1173	REQ_SEND;
912
913	static void *aio_proc (void *thr_arg)
914	{
915	aio_req req;
916	int type;
917	worker *self = (worker *)thr_arg;
918
919	do
920	{
921	LOCK (reqlock);
922
923	for (;;)
924	{
925	self->req = req = reqq_shift (&req_queue);
926
927	if (req)
928	break;
929
930	pthread_cond_wait (&reqwait, &reqlock);
931	}
932
933	UNLOCK (reqlock);
934
935	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937
938	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)
940	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
943
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
946
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
950
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
958
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;
961	case REQ_READDIR: scandir_ (req, self); break;
962
963	case REQ_BUSY:
964	{
965	struct timeval tv;
966
967	tv.tv_sec = req->fd;
968	tv.tv_usec = req->fd2;
969
970	req->result = select (0, 0, 0, 0, &tv);
971	}
972
973	case REQ_GROUP:
974	case REQ_NOP:
975	case REQ_QUIT:
976	break;
977
978	default:
979	req->result = ENOSYS;
980	break;
981	}
982
983	req->errorno = errno;
984
985	LOCK (reslock);
986
987	if (!reqq_push (&res_queue, req))
988	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);
990
991	self->req = 0;
992	worker_clear (self);
993
994	UNLOCK (reslock);
995	}
996	while (type != REQ_QUIT);
997
998	LOCK (wrklock);
999	worker_free (self);
1000	UNLOCK (wrklock);
1001
1002	return 0;
1003	}	1174	}
1004		1175
1005	/*****************************************************************************/
1006
1007	static void atfork_prepare (void)
1008	{
1009	LOCK (wrklock);
1010	LOCK (reqlock);
1011	LOCK (reslock);
1012	#if !HAVE_PREADWRITE
1013	LOCK (preadwritelock);
1014	#endif
1015	#if !HAVE_READDIR_R
1016	LOCK (readdirlock);
1017	#endif
1018	}
1019
1020	static void atfork_parent (void)
1021	{
1022	#if !HAVE_READDIR_R
1023	UNLOCK (readdirlock);
1024	#endif
1025	#if !HAVE_PREADWRITE
1026	UNLOCK (preadwritelock);
1027	#endif
1028	UNLOCK (reslock);
1029	UNLOCK (reqlock);
1030	UNLOCK (wrklock);
1031	}
1032
1033	static void atfork_child (void)
1034	{
1035	aio_req prv;
1036
1037	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);
1039
1040	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);
1042
1043	while (wrk_first.next != &wrk_first)
1044	{
1045	worker *wrk = wrk_first.next;
1046
1047	if (wrk->req)
1048	req_free (wrk->req);
1049
1050	worker_clear (wrk);
1051	worker_free (wrk);
1052	}
1053
1054	started = 0;
1055	nreqs = 0;
1056
1057	close (respipe [0]);
1058	close (respipe [1]);
1059	create_pipe ();
1060
1061	atfork_parent ();
1062	}
1063
1064	#define dREQ \
1065	aio_req req; \
1066	int req_pri = next_pri; \
1067	next_pri = DEFAULT_PRI + PRI_BIAS; \
1068	\
1069	if (SvOK (callback) && !SvROK (callback)) \
1070	croak ("callback must be undef or of reference type"); \
1071	\
1072	Newz (0, req, 1, aio_cb); \
1073	if (!req) \
1074	croak ("out of memory during aio_req allocation"); \
1075	\
1076	req->callback = newSVsv (callback); \
1077	req->pri = req_pri
1078
1079	#define REQ_SEND \
1080	req_send (req); \
1081	\
1082	if (GIMME_V != G_VOID) \
1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1084
1085	MODULE = IO::AIO PACKAGE = IO::AIO
1086
1087	PROTOTYPES: ENABLE
1088
1089	BOOT:
1090	{
1091	HV *stash = gv_stashpv ("IO::AIO", 1);
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095
1096	create_pipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098	}
1099
1100	void	1176	void
1101	min_parallel (nthreads)	1177	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1102	int nthreads	1178	PPCODE:
1103	PROTOTYPE: $
1104
1105	void
1106	max_parallel (nthreads)
1107	int nthreads
1108	PROTOTYPE: $
1109
1110	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$
1117	PPCODE:
1118	{	1179	{
		1180	int fd = s_fileno_croak (fh, 0);
1119	dREQ;	1181	dREQ;
1120		1182
1121	req->type = REQ_OPEN;	1183	req->type = EIO_SEEK;
1122	req->data = newSVsv (pathname);	1184	req->sv1 = newSVsv (fh);
1123	req->dataptr = SvPVbyte_nolen (req->data);	1185	req->int1 = fd;
1124	req->fd = flags;	1186	req->offs = SvVAL64 (offset);
1125	req->mode = mode;	1187	req->int2 = whence;
1126		1188
1127	REQ_SEND;	1189	REQ_SEND;
1128	}	1190	}
1129		1191
1130	void	1192	void
1131	aio_close (fh,callback=&PL_sv_undef)	1193	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$
1135	ALIAS:	1194	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC
1139	PPCODE:
1140	{
1141	dREQ;
1142
1143	req->type = ix;
1144	req->fh = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1146
1147	REQ_SEND (req);
1148	}
1149
1150	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:
1159	aio_read = REQ_READ	1195	aio_read = EIO_READ
1160	aio_write = REQ_WRITE	1196	aio_write = EIO_WRITE
1161	PROTOTYPE: $$$$$;$
1162	PPCODE:	1197	PPCODE:
1163	{	1198	{
1164	aio_req req;
1165	STRLEN svlen;	1199	STRLEN svlen;
		1200	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166	char *svptr = SvPVbyte (data, svlen);	1201	char *svptr = SvPVbyte (data, svlen);
1167		1202	UV len = SvUV (length);
1168	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);
1170		1203
1171	if (dataoffset < 0)	1204	if (dataoffset < 0)
1172	dataoffset += svlen;	1205	dataoffset += svlen;
1173		1206
1174	if (dataoffset < 0 || dataoffset > svlen)	1207	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	1208	croak ("dataoffset outside of data scalar");
1176		1209
1177	if (ix == REQ_WRITE)	1210	if (ix == EIO_WRITE)
1178	{	1211	{
1179	/* write: check length and adjust. */	1212	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	1213	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	1214	len = svlen - dataoffset;
1182	}	1215	}
1183	else	1216	else
1184	{	1217	{
1185	/* 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))
1186	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");
1187	}	1224	}
1188
1189	if (length < 0)
1190	croak ("length must not be negative");
1191		1225
1192	{	1226	{
1193	dREQ;	1227	dREQ;
1194		1228
1195	req->type = ix;	1229	req->type = ix;
1196	req->fh = newSVsv (fh);	1230	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1231	req->int1 = fd;
1198	: IoOFP (sv_2io (fh)));	1232	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	1233	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	1234	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	1235	req->ptr2 = (char *)svptr + dataoffset;
		1236	req->stroffset = dataoffset;
1203		1237
1204	if (!SvREADONLY (data))	1238	if (!SvREADONLY (data))
1205	{	1239	{
1206	SvREADONLY_on (data);	1240	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	1241	req->flags |= FLAG_SV2_RO_OFF;
1208	}	1242	}
1209		1243
1210	REQ_SEND;	1244	REQ_SEND;
1211	}	1245	}
1212	}	1246	}
1213		1247
1214	void	1248	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1249	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1216	SV * out_fh	1250	ALIAS:
1217	SV * in_fh	1251	aio_readlink = EIO_READLINK
1218	UV in_offset	1252	aio_realpath = EIO_REALPATH
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$
1222	PPCODE:	1253	PPCODE:
1223	{	1254	{
		1255	dREQ;
		1256
		1257	req->type = ix;
		1258	req_set_path1 (req, pathname);
		1259
		1260	REQ_SEND;
		1261	}
		1262
		1263	void
		1264	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	int ifd = s_fileno_croak (in_fh , 0);
		1268	int ofd = s_fileno_croak (out_fh, 1);
1224	dREQ;	1269	dREQ;
1225		1270
1226	req->type = REQ_SENDFILE;	1271	req->type = EIO_SENDFILE;
1227	req->fh = newSVsv (out_fh);	1272	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1273	req->int1 = ofd;
1229	req->fh2 = newSVsv (in_fh);	1274	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1275	req->int2 = ifd;
1231	req->offset = in_offset;	1276	req->offs = in_offset;
1232	req->length = length;	1277	req->size = length;
1233		1278
1234	REQ_SEND;	1279	REQ_SEND;
1235	}	1280	}
1236		1281
1237	void	1282	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1283	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$
1244	PPCODE:	1284	PPCODE:
1245	{	1285	{
		1286	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	1287	dREQ;
1247		1288
1248	req->type = REQ_READAHEAD;	1289	req->type = EIO_READAHEAD;
1249	req->fh = newSVsv (fh);	1290	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1291	req->int1 = fd;
1251	req->offset = offset;	1292	req->offs = offset;
1252	req->length = length;	1293	req->size = length;
1253		1294
1254	REQ_SEND;	1295	REQ_SEND;
1255	}	1296	}
1256		1297
1257	void	1298	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	1299	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	1300	ALIAS:
1262	aio_stat = REQ_STAT	1301	aio_stat = EIO_STAT
1263	aio_lstat = REQ_LSTAT	1302	aio_lstat = EIO_LSTAT
		1303	aio_statvfs = EIO_STATVFS
1264	PPCODE:	1304	PPCODE:
1265	{	1305	{
1266	dREQ;	1306	dREQ;
1267		1307
1268	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);
1269	if (!req->statdata)
1270	{
1271	req_free (req);
1272	croak ("out of memory during aio_req->statdata allocation");
1273	}
1274
1275	if (SvPOK (fh_or_path))
1276	{
1277	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);
1280	}
1281	else
1282	{
1283	req->type = REQ_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}
1287		1309
1288	REQ_SEND;	1310	REQ_SEND;
1289	}	1311	}
1290		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
1291	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
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1410	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1411	ALIAS:
1296	aio_unlink = REQ_UNLINK	1412	aio_unlink = EIO_UNLINK
1297	aio_rmdir = REQ_RMDIR	1413	aio_rmdir = EIO_RMDIR
1298	aio_readdir = REQ_READDIR	1414	aio_readdir = EIO_READDIR
1299	PPCODE:	1415	PPCODE:
1300	{	1416	{
1301	dREQ;	1417	dREQ;
1302		1418
1303	req->type = ix;	1419	req->type = ix;
1304	req->data = newSVsv (pathname);	1420	req_set_path1 (req, pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1421
1306
1307	REQ_SEND;	1422	REQ_SEND;
1308	}	1423	}
1309		1424
1310	void	1425	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1426	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:	1427	ALIAS:
1316	aio_link = REQ_LINK	1428	aio_link = EIO_LINK
1317	aio_symlink = REQ_SYMLINK	1429	aio_symlink = EIO_SYMLINK
1318	aio_rename = REQ_RENAME	1430	aio_rename = EIO_RENAME
1319	PPCODE:	1431	PPCODE:
1320	{	1432	{
		1433	eio_wd wd2 = 0;
1321	dREQ;	1434	dREQ;
1322		1435
1323	req->type = ix;	1436	req->type = ix;
1324	req->fh = newSVsv (oldpath);	1437	req_set_path1 (req, oldpath);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1438	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1326	req->data = newSVsv (newpath);	1439	req->int3 = (long)wd2;
1327	req->dataptr = SvPVbyte_nolen (req->data);
1328		1440
1329	REQ_SEND;	1441	REQ_SEND;
1330	}	1442	}
1331		1443
1332	void	1444	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1445	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1446	PPCODE:
1337	{	1447	{
1338	dREQ;	1448	dREQ;
1339		1449
1340	req->type = REQ_BUSY;	1450	req->type = EIO_MKNOD;
1341	req->fd = delay < 0. ? 0 : delay;	1451	req->int2 = (mode_t)mode;
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1452	req->offs = dev;
1343		1453	req_set_path1 (req, pathname);
		1454
1344	REQ_SEND;	1455	REQ_SEND;
1345	}	1456	}
1346		1457
1347	void	1458	void
1348	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)
1349	SV * callback	1460	ALIAS:
1350	PROTOTYPE: ;$	1461	aio_mtouch = EIO_MTOUCH
		1462	aio_msync = EIO_MSYNC
1351	PPCODE:	1463	PPCODE:
1352	{	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);
1353	dREQ;	1537	dREQ;
1354		1538
1355	req->type = REQ_GROUP;	1539	req->type = EIO_CUSTOM;
1356	req_send (req);	1540	req->sv1 = newSVsv (fh);
		1541	req->int1 = fd;
1357		1542
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1543	req->feed = fiemap;
1359	}	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
1360		1551
		1552	REQ_SEND;
		1553	}
		1554
1361	void	1555	void
1362	aio_nop (callback=&PL_sv_undef)	1556	aio_busy (double delay, SV *callback=&PL_sv_undef)
1363	SV * callback
1364	PPCODE:	1557	PPCODE:
1365	{	1558	{
1366	dREQ;	1559	dREQ;
1367		1560
1368	req->type = REQ_NOP;	1561	req->type = EIO_BUSY;
		1562	req->nv1 = delay < 0. ? 0. : delay;
1369		1563
1370	REQ_SEND;	1564	REQ_SEND;
1371	}	1565	}
1372		1566
1373	void	1567	void
1374	aioreq_pri (int pri = DEFAULT_PRI)	1568	aio_group (SV *callback=&PL_sv_undef)
1375	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	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1599	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1600	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1601	next_pri = pri;
		1602	}
		1603	OUTPUT:
		1604	RETVAL
1379		1605
1380	void	1606	void
1381	aioreq_nice (int nice = 0)	1607	aioreq_nice (int nice = 0)
1382	CODE:	1608	CODE:
1383	nice = next_pri - nice;	1609	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1610	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1611	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1612	next_pri = nice;
1387		1613
1388	void	1614	void
1389	flush ()	1615	flush ()
1390	PROTOTYPE:
1391	CODE:	1616	CODE:
1392	while (nreqs)	1617	while (eio_nreqs ())
1393	{	1618	{
1394	poll_wait ();	1619	poll_wait ();
1395	poll_cb ();	1620	poll_cb ();
1396	}	1621	}
1397		1622
1398	void	1623	int
1399	poll()	1624	poll ()
1400	PROTOTYPE:
1401	CODE:	1625	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1626	poll_wait ();
1405	poll_cb ();	1627	RETVAL = poll_cb ();
1406	}
1407
1408	int
1409	poll_fileno()
1410	PROTOTYPE:
1411	CODE:
1412	RETVAL = respipe [0];
1413	OUTPUT:	1628	OUTPUT:
1414	RETVAL	1629	RETVAL
1415		1630
1416	int	1631	int
		1632	poll_fileno ()
		1633	CODE:
		1634	RETVAL = s_epipe_fd (&respipe);
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638	int
1417	poll_cb(...)	1639	poll_cb (...)
1418	PROTOTYPE:	1640	PROTOTYPE:
1419	CODE:	1641	CODE:
1420	RETVAL = poll_cb ();	1642	RETVAL = poll_cb ();
1421	OUTPUT:	1643	OUTPUT:
1422	RETVAL	1644	RETVAL
1423		1645
1424	void	1646	void
1425	poll_wait()	1647	poll_wait ()
1426	PROTOTYPE:
1427	CODE:	1648	CODE:
1428	if (nreqs)
1429	poll_wait ();	1649	poll_wait ();
1430		1650
1431	int	1651	int
1432	nreqs()	1652	nreqs ()
1433	PROTOTYPE:
1434	CODE:	1653	CODE:
1435	RETVAL = nreqs;	1654	RETVAL = eio_nreqs ();
1436	OUTPUT:	1655	OUTPUT:
1437	RETVAL	1656	RETVAL
1438		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
1439	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	}
1440		1863
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1864	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1865
1443	void	1866	void
1444	cancel (aio_req_ornot req)	1867	cancel (aio_req_ornot req)
1445	CODE:	1868	CODE:
1446	req_cancel (req);	1869	eio_cancel (req);
1447		1870
1448	void	1871	void
1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1872	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1450	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
1451	SvREFCNT_dec (req->callback);	1882	SvREFCNT_dec (req->callback);
1452	req->callback = newSVsv (callback);	1883	req->callback = SvREFCNT_inc (cb_cv);
		1884	}
		1885	}
1453		1886
1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1887	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455		1888
1456	void	1889	void
1457	add (aio_req grp, ...)	1890	add (aio_req grp, ...)
1458	PPCODE:	1891	PPCODE:
1459	{	1892	{
1460	int i;	1893	int i;
1461	aio_req req;
1462		1894
1463	if (grp->fd == 2)	1895	if (grp->int1 == 2)
1464	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");
1465		1897
1466	for (i = 1; i < items; ++i )	1898	for (i = 1; i < items; ++i )
1467	{	1899	{
		1900	aio_req req;
		1901
1468	if (GIMME_V != G_VOID)	1902	if (GIMME_V != G_VOID)
1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1903	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470		1904
1471	req = SvAIO_REQ (ST (i));	1905	req = SvAIO_REQ (ST (i));
1472		1906
1473	if (req)	1907	if (req)
1474	{	1908	eio_grp_add (grp, req);
1475	++grp->length;
1476	req->grp = grp;
1477
1478	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;
1480
1481	if (grp->grp_first)
1482	grp->grp_first->grp_prev = req;
1483
1484	grp->grp_first = req;
1485	}
1486	}	1909	}
1487	}	1910	}
1488		1911
1489	void	1912	void
1490	cancel_subs (aio_req_ornot req)	1913	cancel_subs (aio_req_ornot req)
…		…
1494	void	1917	void
1495	result (aio_req grp, ...)	1918	result (aio_req grp, ...)
1496	CODE:	1919	CODE:
1497	{	1920	{
1498	int i;	1921	int i;
		1922	AV *av;
		1923
		1924	grp->errorno = errno;
		1925
1499	AV *av = newAV ();	1926	av = newAV ();
		1927	av_extend (av, items - 1);
1500		1928
1501	for (i = 1; i < items; ++i )	1929	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1930	av_push (av, newSVsv (ST (i)));
1503		1931
1504	SvREFCNT_dec (grp->data);	1932	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1933	grp->sv1 = (SV *)av;
1506	}	1934	}
		1935
		1936	void
		1937	errno (aio_req grp, int errorno = errno)
		1938	CODE:
		1939	grp->errorno = errorno;
1507		1940
1508	void	1941	void
1509	limit (aio_req grp, int limit)	1942	limit (aio_req grp, int limit)
1510	CODE:	1943	CODE:
1511	grp->fd2 = limit;	1944	eio_grp_limit (grp, limit);
1512	aio_grp_feed (grp);
1513		1945
1514	void	1946	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1947	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1948	CODE:
1517	{	1949	{
1518	SvREFCNT_dec (grp->fh2);	1950	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1951	grp->sv2 = newSVsv (callback);
		1952	grp->feed = aio_grp_feed;
1520		1953
1521	if (grp->fd2 <= 0)	1954	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1955	grp->int2 = 2;
1523		1956
1524	aio_grp_feed (grp);	1957	eio_grp_limit (grp, grp->int2);
1525	}	1958	}
1526		1959

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