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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.216 by root, Wed Jul 25 16:12:28 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,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	232	static int max_outstanding;
134	static int respipe [2];
135		233
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	234	static s_epipe respipe;
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		235
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	236	static void req_destroy (aio_req req);
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);	237	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
245		252
246	/* must be called at most once */	253	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
248	{	256	{
249	if (!req->self)	257	if (!req->self)
250	{	258	{
251	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253	}	261	}
254		262
255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256	}	264	}
257		265
258	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)
259	{	274	{
260	MAGIC *mg;	275	MAGIC *mg;
261		276
262	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")))
263	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
264		283
265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266		285
267	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	287	}
269		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
270	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
271	{	302	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
273	{	304	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	305	dSP;
279		306
280	ENTER;	307	ENTER;
281	SAVETMPS;	308	SAVETMPS;
282	PUSHMARK (SP);	309	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
284	PUTBACK;	311	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	313	SPAGAIN;
287	FREETMPS;	314	FREETMPS;
288	LEAVE;	315	LEAVE;
289	}
290
291	/* stop if no progress has been made */
292	if (old_len == grp->length)
293	{
294	SvREFCNT_dec (grp->fh2);
295	grp->fh2 = 0;
296	break;
297	}
298	}	316	}
299	}	317	}
300		318
301	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
302	{	321	{
303	--grp->length;	322	eio_submit (req);
304		323
305	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	325	{
311	req_invoke (grp);	326	dSP;
312	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);
313	}	334	}
314	}	335	}
315		336
316	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
317	{	339	{
318	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
319		342
320	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
321	{	344	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)
342	{
343	dSP;	345	dSP;
344		346	static SV *sv_result_cache; /* caches the result integer SV */
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	347	SV *sv_result;
346	{
347	errno = req->errorno;
348		348
349	ENTER;	349	ENTER;
350	SAVETMPS;	350	SAVETMPS;
351	PUSHMARK (SP);	351	PUSHMARK (SP);
352	EXTEND (SP, 1);	352	EXTEND (SP, 1);
353		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
354	switch (req->type)	367	switch (req->type)
355	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
356	case REQ_READDIR:	373	case EIO_READDIR:
357	{	374	{
358	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
359		376
360	if (req->result >= 0)	377	if (req->result >= 0)
361	{	378	{
362	int i;	379	int i;
363	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	382	AV *av = newAV ();
365		383
366	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
367		385
368	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
369	{	387	{
370	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		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
372	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);
373	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
374	}	422	}
375		423
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	425	}
378		426
379	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))));
380	}	431	}
381	break;	432	break;
382		433
383	case REQ_OPEN:	434	case EIO_OPEN:
384	{	435	{
385	/* convert fd to fh */	436	/* convert fd to fh */
386	SV *fh;	437	SV *fh = &PL_sv_undef;
387		438
388	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
389	PUTBACK;	440	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
391	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);
392		448
393	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	);
394		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
395	PUSHMARK (SP);	461	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	462	}
398	break;	463	break;
399		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
400	case REQ_GROUP:	497	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
402		499
403	if (req->data)	500	if (req->sv1)
404	{	501	{
405	int i;	502	int i;
406	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
407		504
408	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
411	}	508	}
412	break;	509	break;
413		510
414	case REQ_NOP:	511	case EIO_NOP:
415	case REQ_BUSY:	512	case EIO_BUSY:
416	break;	513	break;
417		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
418	default:	592	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
420	break;	594	break;
421	}	595	}
422		596
		597	errno = req->errorno;
423		598
424	PUTBACK;	599	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	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;
427		607
428	FREETMPS;	608	FREETMPS;
429	LEAVE;	609	LEAVE;
		610
		611	PUTBACK;
430	}	612	}
431		613
432	if (req->grp)	614	return !!SvTRUE (ERRSV);
433	{
434	aio_req grp = req->grp;
435
436	/* unlink request */
437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
439
440	if (grp->grp_first == req)
441	grp->grp_first = req->grp_next;
442
443	aio_grp_dec (grp);
444	}
445
446	if (SvTRUE (ERRSV))
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	615	}
452		616
453	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
454	{	619	{
455	if (req->self)	620	if (req->self)
456	{	621	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
459	}	624	}
460		625
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
464	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466		631
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469
470	Safefree (req);	632	free (req);
471	}	633	}
472		634
473	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
474	{	637	{
475	req->flags |= FLAG_CANCELLED;
476
477	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
478	{	658	{
479	aio_req sub;	659	int size;
480		660
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	661	X_LOCK (reslock);
482	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
483	}	671	}
484	}	672	}
485		673
486	static int poll_cb ()	674	static int
		675	poll_cb (void)
487	{	676	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	677	for (;;)
494	{	678	{
495	LOCK (reslock);	679	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		680
498	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)
499	{	792	{
500	if (!res_queue.size)	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
		795
		796	if (SvOK (wdob))
501	{	797	{
502	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
503	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
507	}	803	}
508		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
509	UNLOCK (reslock);
510
511	if (!req)
512	break;
513
514	--nreqs;
515
516	if (req->type == REQ_QUIT)
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{	805	{
520	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
521	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
522	}	810	}
523	else	811	else
524	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}	813	}
545		814
546	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
547	}	817	}
548		818
549	static void *aio_proc(void *arg);	819	static void ecb_noinline
550		820	req_set_path1 (aio_req req, SV *path)
551	static void start_thread (void)
552	{	821	{
553	worker *wrk = calloc (1, sizeof (worker));	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		823	}
554		824
555	if (!wrk)	825	static void ecb_noinline
556	croak ("unable to allocate worker thread data");	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;
557		829
558	sigset_t fullsigset, oldsigset;	830	switch (SvTYPE (rv))
559	pthread_attr_t attr;
560
561	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);
563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565	sigfillset (&fullsigset);
566
567	LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571	{	831	{
572	wrk->prev = &wrk_first;	832	case SVt_PVIO:
573	wrk->next = wrk_first.next;	833	case SVt_PVLV:
574	wrk_first.next->prev = wrk;	834	case SVt_PVGV:
575	wrk_first.next = wrk;	835	req->type = type_fh;
576	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;
577	}	844	}
578	else
579	free (wrk);
580
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);
583	}	845	}
584		846
585	static void req_send (aio_req req)	847	XS(boot_IO__AIO) ecb_cold;
586	{
587	while (started < wanted && nreqs >= started)
588	start_thread ();
589		848
590	++nreqs;	849	MODULE = IO::AIO PACKAGE = IO::AIO
591		850
592	LOCK (reqlock);	851	PROTOTYPES: ENABLE
593	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);
596		852
597	if (nreqs > max_outstanding)	853	BOOT:
598	for (;;)
599	{
600	poll_cb ();
601
602	if (nreqs <= max_outstanding)
603	break;
604
605	poll_wait ();
606	}
607	}
608
609	static void end_thread (void)
610	{	854	{
611	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 },
612		862
613	Newz (0, req, 1, aio_cb);	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
614		864
615	req->type = REQ_QUIT;	865	const_iv (ENOSYS)
616	req->pri = PRI_MAX + PRI_BIAS;	866	const_iv (EXDEV)
		867	const_iv (EBADR)
617		868
618	req_send (req);	869	const_iv (O_RDONLY)
619	}	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)
620		876
621	static void min_parallel (int nthreads)	877	const_iv (O_ASYNC)
622	{	878	const_iv (O_DIRECT)
623	if (wanted < nthreads)	879	const_iv (O_NOATIME)
624	wanted = nthreads;
625	}
626		880
627	static void max_parallel (int nthreads)	881	const_iv (O_CLOEXEC)
628	{	882	const_iv (O_NOCTTY)
629	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)
630		892
631	if (wanted > nthreads)	893	const_iv (S_IFIFO)
632	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)
633		902
634	while (cur > wanted)	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
635	{	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
636	end_thread ();	905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
637	cur--;	906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
638	}	907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
639		909
640	while (started > wanted)	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
641	{	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
642	poll_wait ();	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
643	poll_cb ();	913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
644	}	914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
645	}
646		915
647	static void create_pipe ()	916	const_iv (ST_RDONLY)
648	{	917	const_iv (ST_NOSUID)
649	if (pipe (respipe))	918	const_iv (ST_NODEV)
650	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)
651		928
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	929	const_iv (PROT_NONE)
653	croak ("cannot set result pipe to nonblocking mode");	930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
654		933
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	934	/*const_iv (MAP_FIXED)*/
656	croak ("cannot set result pipe to nonblocking mode");	935	const_iv (MAP_PRIVATE)
657	}	936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
658		938
659	/*****************************************************************************/	939	/* linuxish */
660	/* 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)
661		945
662	#if !HAVE_PREADWRITE	946	const_iv (FIEMAP_FLAG_SYNC)
663	# define pread aio_pread	947	const_iv (FIEMAP_FLAG_XATTR)
664	# 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)
665		960
666	/*	961	const_iv (SPLICE_F_MOVE)
667	* make our pread/pwrite safe against themselves, but not against	962	const_iv (SPLICE_F_NONBLOCK)
668	* normal read/write by using a mutex. slows down execution a lot,	963	const_iv (SPLICE_F_MORE)
669	* but that's your problem, not mine.	964	const_iv (SPLICE_F_GIFT)
670	*/
671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
672		965
673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	966	const_iv (SEEK_DATA)
674	{	967	const_iv (SEEK_HOLE)
675	ssize_t res;
676	off_t ooffset;
677		968
678	LOCK (preadwritelock);	969	/* libeio constants */
679	ooffset = lseek (fd, 0, SEEK_CUR);	970	const_eio (SEEK_SET)
680	lseek (fd, offset, SEEK_SET);	971	const_eio (SEEK_CUR)
681	res = read (fd, buf, count);	972	const_eio (SEEK_END)
682	lseek (fd, ooffset, SEEK_SET);
683	UNLOCK (preadwritelock);
684		973
685	return res;	974	const_eio (MCL_FUTURE)
686	}	975	const_eio (MCL_CURRENT)
687		976
688	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	977	const_eio (MS_ASYNC)
689	{	978	const_eio (MS_INVALIDATE)
690	ssize_t res;	979	const_eio (MS_SYNC)
691	off_t ooffset;
692		980
693	LOCK (preadwritelock);	981	const_eio (MT_MODIFY)
694	ooffset = lseek (fd, 0, SEEK_CUR);
695	lseek (fd, offset, SEEK_SET);
696	res = write (fd, buf, count);
697	lseek (fd, offset, SEEK_SET);
698	UNLOCK (preadwritelock);
699		982
700	return res;	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
701	}	984	const_eio (SYNC_FILE_RANGE_WRITE)
702	#endif	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
703		986
704	#if !HAVE_FDATASYNC	987	const_eio (FALLOC_FL_KEEP_SIZE)
705	# define fdatasync fsync	988	const_eio (FALLOC_FL_PUNCH_HOLE)
706	#endif
707		989
708	#if !HAVE_READAHEAD	990	const_eio (READDIR_DENTS)
709	# define readahead aio_readahead	991	const_eio (READDIR_DIRS_FIRST)
		992	const_eio (READDIR_STAT_ORDER)
		993	const_eio (READDIR_FOUND_UNKNOWN)
710		994
711	static ssize_t readahead (int fd, off_t offset, size_t count)	995	const_eio (DT_UNKNOWN)
712	{	996	const_eio (DT_FIFO)
713	dBUF;	997	const_eio (DT_CHR)
714		998	const_eio (DT_DIR)
715	while (count > 0)	999	const_eio (DT_BLK)
716	{	1000	const_eio (DT_REG)
717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	1001	const_eio (DT_LNK)
718		1002	const_eio (DT_SOCK)
719	pread (fd, aio_buf, len, offset);	1003	const_eio (DT_WHT)
720	offset += len;
721	count -= len;
722	}
723
724	errno = 0;
725	}
726	#endif
727
728	#if !HAVE_READDIR_R
729	# define readdir_r aio_readdir_r
730
731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
732
733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
734	{
735	struct dirent *e;
736	int errorno;
737
738	LOCK (readdirlock);
739
740	e = readdir (dirp);
741	errorno = errno;
742
743	if (e)
744	{
745	*res = ent;
746	strcpy (ent->d_name, e->d_name);
747	}
748	else
749	*res = 0;
750
751	UNLOCK (readdirlock);
752
753	errno = errorno;
754	return e ? 0 : -1;
755	}
756	#endif
757
758	/* sendfile always needs emulation */
759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
760	{
761	ssize_t res;
762
763	if (!count)
764	return 0;
765
766	#if HAVE_SENDFILE
767	# if __linux
768	res = sendfile (ofd, ifd, &offset, count);
769
770	# elif __freebsd
771	/*
772	* Of course, the freebsd sendfile is a dire hack with no thoughts
773	* wasted on making it similar to other I/O functions.
774	*/
775	{
776	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778
779	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
781	res = sbytes;
782	}	1004	};
783		1005
784	# elif __hpux	1006	aio_stash = gv_stashpv ("IO::AIO" , 1);
785	res = sendfile (ofd, ifd, offset, count, 0, 0);	1007	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1008	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1009	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
786		1010
787	# elif __solaris	1011	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
788	{	1012	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
789	struct sendfilevec vec;
790	size_t sbytes;
791		1013
792	vec.sfv_fd = ifd;	1014	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
793	vec.sfv_flag = 0;
794	vec.sfv_off = offset;
795	vec.sfv_len = count;
796		1015
797	res = sendfilev (ofd, &vec, 1, &sbytes);	1016	reinit ();
		1017	}
798		1018
799	if (res < 0 && sbytes)	1019	void
		1020	reinit ()
		1021	PROTOTYPE:
		1022
		1023	void
		1024	max_poll_reqs (unsigned int nreqs)
		1025	PROTOTYPE: $
		1026	CODE:
		1027	eio_set_max_poll_reqs (nreqs);
		1028
		1029	void
		1030	max_poll_time (double nseconds)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_poll_time (nseconds);
		1034
		1035	void
		1036	min_parallel (unsigned int nthreads)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_min_parallel (nthreads);
		1040
		1041	void
		1042	max_parallel (unsigned int nthreads)
		1043	PROTOTYPE: $
		1044	CODE:
		1045	eio_set_max_parallel (nthreads);
		1046
		1047	void
		1048	max_idle (unsigned int nthreads)
		1049	PROTOTYPE: $
		1050	CODE:
		1051	eio_set_max_idle (nthreads);
		1052
		1053	void
		1054	idle_timeout (unsigned int seconds)
		1055	PROTOTYPE: $
		1056	CODE:
		1057	eio_set_idle_timeout (seconds);
		1058
		1059	void
		1060	max_outstanding (unsigned int maxreqs)
		1061	PROTOTYPE: $
		1062	CODE:
		1063	max_outstanding = maxreqs;
		1064
		1065	void
		1066	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->type = EIO_WD_OPEN;
		1072	req_set_path1 (req, pathname);
		1073
		1074	REQ_SEND;
		1075	}
		1076
		1077	void
		1078	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1079	PPCODE:
		1080	{
		1081	dREQ;
		1082
		1083	req->type = EIO_OPEN;
		1084	req_set_path1 (req, pathname);
		1085	req->int1 = flags;
		1086	req->int2 = mode;
		1087
		1088	REQ_SEND;
		1089	}
		1090
		1091	void
		1092	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1093	ALIAS:
		1094	aio_fsync = EIO_FSYNC
		1095	aio_fdatasync = EIO_FDATASYNC
		1096	aio_syncfs = EIO_SYNCFS
		1097	PPCODE:
		1098	{
		1099	int fd = s_fileno_croak (fh, 0);
		1100	dREQ;
		1101
		1102	req->type = ix;
		1103	req->sv1 = newSVsv (fh);
		1104	req->int1 = fd;
		1105
		1106	REQ_SEND;
		1107	}
		1108
		1109	void
		1110	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1111	PPCODE:
		1112	{
		1113	int fd = s_fileno_croak (fh, 0);
		1114	dREQ;
		1115
		1116	req->type = EIO_SYNC_FILE_RANGE;
		1117	req->sv1 = newSVsv (fh);
		1118	req->int1 = fd;
		1119	req->offs = offset;
800	res = sbytes;	1120	req->size = nbytes;
801	}	1121	req->int2 = flags;
802		1122
803	# endif	1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	int fd = s_fileno_croak (fh, 0);
		1131	dREQ;
		1132
		1133	req->type = EIO_FALLOCATE;
		1134	req->sv1 = newSVsv (fh);
		1135	req->int1 = fd;
		1136	req->int2 = mode;
		1137	req->offs = offset;
		1138	req->size = len;
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1145	PPCODE:
		1146	{
		1147	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1148	int fd = s_fileno_croak (fh, 0);
		1149	dREQ;
		1150
		1151	if (expect_false (close_fd < 0))
		1152	{
		1153	int pipefd [2];
		1154
		1155	if (
		1156	#ifdef _WIN32
		1157	_pipe (pipefd, 1, _O_BINARY) < 0
804	#else	1158	#else
805	res = -1;	1159	pipe (pipefd) < 0
806	errno = ENOSYS;	1160	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
807	#endif	1161	#endif
808		1162	|| close (pipefd [1]) < 0
809	if (res < 0
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
811	#if __solaris
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
813	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819
820	res = 0;
821
822	while (count)
823	{
824	ssize_t cnt;
825
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
827
828	if (cnt <= 0)
829	{	1163	)
830	if (cnt && !res) res = -1;	1164	abort (); /*D*/
831	break;
832	}
833		1165
834	cnt = write (ofd, aio_buf, cnt);	1166	close_fd = pipefd [0];
835
836	if (cnt <= 0)
837	{
838	if (cnt && !res) res = -1;
839	break;
840	}
841
842	offset += cnt;
843	res += cnt;
844	count -= cnt;
845	}
846	}
847
848	return res;
849	}
850
851	/* read a full directory */
852	static void scandir_ (aio_req req, worker *self)
853	{
854	DIR *dirp;
855	union
856	{
857	struct dirent d;
858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
859	} *u;
860	struct dirent *entp;
861	char *name, *names;
862	int memlen = 4096;
863	int memofs = 0;
864	int res = 0;
865	int errorno;
866
867	LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);
869	self->dbuf = u = malloc (sizeof (*u));
870	UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873
874	if (dirp && u && names)
875	for (;;)
876	{
877	errno = 0;
878	readdir_r (dirp, &u->d, &entp);
879
880	if (!entp)
881	break;
882
883	name = entp->d_name;
884
885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
886	{
887	int len = strlen (name) + 1;
888
889	res++;
890
891	while (memofs + len > memlen)
892	{
893	memlen *= 2;
894	LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);
896	UNLOCK (wrklock);
897
898	if (!names)
899	break;
900	}
901
902	memcpy (names + memofs, name, len);
903	memofs += len;
904	}	1167	}
905	}
906		1168
907	if (errno)	1169	req->type = EIO_DUP2;
908	res = -1;	1170	req->int1 = close_fd;
909		1171	req->sv2 = newSVsv (fh);
910	req->result = res;	1172	req->int2 = fd;
911	}
912		1173
913	/*****************************************************************************/	1174	REQ_SEND;
914
915	static void *aio_proc (void *thr_arg)
916	{
917	aio_req req;
918	int type;
919	worker *self = (worker *)thr_arg;
920
921	do
922	{
923	LOCK (reqlock);
924
925	for (;;)
926	{
927	self->req = req = reqq_shift (&req_queue);
928
929	if (req)
930	break;
931
932	pthread_cond_wait (&reqwait, &reqlock);
933	}
934
935	UNLOCK (reqlock);
936
937	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939
940	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)
942	{
943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945
946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
948
949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
952
953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
954	case REQ_CLOSE: req->result = close (req->fd); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
960
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962	case REQ_FSYNC: req->result = fsync (req->fd); break;
963	case REQ_READDIR: scandir_ (req, self); break;
964
965	case REQ_BUSY:
966	{
967	struct timeval tv;
968
969	tv.tv_sec = req->fd;
970	tv.tv_usec = req->fd2;
971
972	req->result = select (0, 0, 0, 0, &tv);
973	}
974
975	case REQ_GROUP:
976	case REQ_NOP:
977	case REQ_QUIT:
978	break;
979
980	default:
981	req->result = ENOSYS;
982	break;
983	}
984
985	req->errorno = errno;
986
987	LOCK (reslock);
988
989	if (!reqq_push (&res_queue, req))
990	/* write a dummy byte to the pipe so fh becomes ready */
991	write (respipe [1], &respipe, 1);
992
993	self->req = 0;
994	worker_clear (self);
995
996	UNLOCK (reslock);
997	}
998	while (type != REQ_QUIT);
999
1000	LOCK (wrklock);
1001	worker_free (self);
1002	UNLOCK (wrklock);
1003
1004	return 0;
1005	}	1175	}
1006		1176
1007	/*****************************************************************************/
1008
1009	static void atfork_prepare (void)
1010	{
1011	LOCK (wrklock);
1012	LOCK (reqlock);
1013	LOCK (reslock);
1014	#if !HAVE_PREADWRITE
1015	LOCK (preadwritelock);
1016	#endif
1017	#if !HAVE_READDIR_R
1018	LOCK (readdirlock);
1019	#endif
1020	}
1021
1022	static void atfork_parent (void)
1023	{
1024	#if !HAVE_READDIR_R
1025	UNLOCK (readdirlock);
1026	#endif
1027	#if !HAVE_PREADWRITE
1028	UNLOCK (preadwritelock);
1029	#endif
1030	UNLOCK (reslock);
1031	UNLOCK (reqlock);
1032	UNLOCK (wrklock);
1033	}
1034
1035	static void atfork_child (void)
1036	{
1037	aio_req prv;
1038
1039	while (prv = reqq_shift (&req_queue))
1040	req_free (prv);
1041
1042	while (prv = reqq_shift (&res_queue))
1043	req_free (prv);
1044
1045	while (wrk_first.next != &wrk_first)
1046	{
1047	worker *wrk = wrk_first.next;
1048
1049	if (wrk->req)
1050	req_free (wrk->req);
1051
1052	worker_clear (wrk);
1053	worker_free (wrk);
1054	}
1055
1056	started = 0;
1057	nreqs = 0;
1058
1059	close (respipe [0]);
1060	close (respipe [1]);
1061	create_pipe ();
1062
1063	atfork_parent ();
1064	}
1065
1066	#define dREQ \
1067	aio_req req; \
1068	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
1070	\
1071	if (SvOK (callback) && !SvROK (callback)) \
1072	croak ("callback must be undef or of reference type"); \
1073	\
1074	Newz (0, req, 1, aio_cb); \
1075	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \
1077	\
1078	req->callback = newSVsv (callback); \
1079	req->pri = req_pri
1080
1081	#define REQ_SEND \
1082	req_send (req); \
1083	\
1084	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1086
1087	MODULE = IO::AIO PACKAGE = IO::AIO
1088
1089	PROTOTYPES: ENABLE
1090
1091	BOOT:
1092	{
1093	HV *stash = gv_stashpv ("IO::AIO", 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097
1098	create_pipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101
1102	void	1177	void
1103	min_parallel (nthreads)	1178	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1104	int nthreads
1105	PROTOTYPE: $
1106
1107	void
1108	max_parallel (nthreads)
1109	int nthreads
1110	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:	1179	PPCODE:
1117	RETVAL = max_outstanding;
1118	max_outstanding = nreqs;
1119
1120	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$
1127	PPCODE:
1128	{	1180	{
		1181	int fd = s_fileno_croak (fh, 0);
1129	dREQ;	1182	dREQ;
1130		1183
1131	req->type = REQ_OPEN;	1184	req->type = EIO_SEEK;
1132	req->data = newSVsv (pathname);	1185	req->sv1 = newSVsv (fh);
1133	req->dataptr = SvPVbyte_nolen (req->data);	1186	req->int1 = fd;
1134	req->fd = flags;	1187	req->offs = SvVAL64 (offset);
1135	req->mode = mode;	1188	req->int2 = whence;
1136		1189
1137	REQ_SEND;	1190	REQ_SEND;
1138	}	1191	}
1139		1192
1140	void	1193	void
1141	aio_close (fh,callback=&PL_sv_undef)	1194	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$
1145	ALIAS:	1195	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC
1149	PPCODE:
1150	{
1151	dREQ;
1152
1153	req->type = ix;
1154	req->fh = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156
1157	REQ_SEND (req);
1158	}
1159
1160	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:
1169	aio_read = REQ_READ	1196	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	1197	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$
1172	PPCODE:	1198	PPCODE:
1173	{	1199	{
1174	aio_req req;
1175	STRLEN svlen;	1200	STRLEN svlen;
		1201	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	1202	char *svptr = SvPVbyte (data, svlen);
1177		1203	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		1204
1181	if (dataoffset < 0)	1205	if (dataoffset < 0)
1182	dataoffset += svlen;	1206	dataoffset += svlen;
1183		1207
1184	if (dataoffset < 0 || dataoffset > svlen)	1208	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1209	croak ("dataoffset outside of data scalar");
1186		1210
1187	if (ix == REQ_WRITE)	1211	if (ix == EIO_WRITE)
1188	{	1212	{
1189	/* write: check length and adjust. */	1213	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1214	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1215	len = svlen - dataoffset;
1192	}	1216	}
1193	else	1217	else
1194	{	1218	{
1195	/* read: grow scalar as necessary */	1219	/* read: check type and grow scalar as necessary */
		1220	SvUPGRADE (data, SVt_PV);
		1221	if (SvLEN (data) >= SvCUR (data))
1196	svptr = SvGROW (data, length + dataoffset);	1222	svptr = SvGROW (data, len + dataoffset + 1);
		1223	else if (SvCUR (data) < len + dataoffset)
		1224	croak ("length + dataoffset outside of scalar, and cannot grow");
1197	}	1225	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		1226
1202	{	1227	{
1203	dREQ;	1228	dREQ;
1204		1229
1205	req->type = ix;	1230	req->type = ix;
1206	req->fh = newSVsv (fh);	1231	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1232	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	1233	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1234	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1235	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1236	req->ptr2 = (char *)svptr + dataoffset;
		1237	req->stroffset = dataoffset;
1213		1238
1214	if (!SvREADONLY (data))	1239	if (!SvREADONLY (data))
1215	{	1240	{
1216	SvREADONLY_on (data);	1241	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1242	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1243	}
1219		1244
1220	REQ_SEND;	1245	REQ_SEND;
1221	}	1246	}
1222	}	1247	}
1223		1248
1224	void	1249	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1250	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1226	SV * out_fh	1251	ALIAS:
1227	SV * in_fh	1252	aio_readlink = EIO_READLINK
1228	UV in_offset	1253	aio_realpath = EIO_REALPATH
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$
1232	PPCODE:	1254	PPCODE:
1233	{	1255	{
		1256	dREQ;
		1257
		1258	req->type = ix;
		1259	req_set_path1 (req, pathname);
		1260
		1261	REQ_SEND;
		1262	}
		1263
		1264	void
		1265	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1266	PPCODE:
		1267	{
		1268	int ifd = s_fileno_croak (in_fh , 0);
		1269	int ofd = s_fileno_croak (out_fh, 1);
1234	dREQ;	1270	dREQ;
1235		1271
1236	req->type = REQ_SENDFILE;	1272	req->type = EIO_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1273	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1274	req->int1 = ofd;
1239	req->fh2 = newSVsv (in_fh);	1275	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1276	req->int2 = ifd;
1241	req->offset = in_offset;	1277	req->offs = in_offset;
1242	req->length = length;	1278	req->size = length;
1243		1279
1244	REQ_SEND;	1280	REQ_SEND;
1245	}	1281	}
1246		1282
1247	void	1283	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1284	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$
1254	PPCODE:	1285	PPCODE:
1255	{	1286	{
		1287	int fd = s_fileno_croak (fh, 0);
1256	dREQ;	1288	dREQ;
1257		1289
1258	req->type = REQ_READAHEAD;	1290	req->type = EIO_READAHEAD;
1259	req->fh = newSVsv (fh);	1291	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1292	req->int1 = fd;
1261	req->offset = offset;	1293	req->offs = offset;
1262	req->length = length;	1294	req->size = length;
1263		1295
1264	REQ_SEND;	1296	REQ_SEND;
1265	}	1297	}
1266		1298
1267	void	1299	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1300	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	1301	ALIAS:
1272	aio_stat = REQ_STAT	1302	aio_stat = EIO_STAT
1273	aio_lstat = REQ_LSTAT	1303	aio_lstat = EIO_LSTAT
		1304	aio_statvfs = EIO_STATVFS
1274	PPCODE:	1305	PPCODE:
1275	{	1306	{
1276	dREQ;	1307	dREQ;
1277		1308
1278	New (0, req->statdata, 1, Stat_t);	1309	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1279	if (!req->statdata)
1280	{
1281	req_free (req);
1282	croak ("out of memory during aio_req->statdata allocation");
1283	}
1284
1285	if (SvPOK (fh_or_path))
1286	{
1287	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);
1290	}
1291	else
1292	{
1293	req->type = REQ_FSTAT;
1294	req->fh = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}
1297		1310
1298	REQ_SEND;	1311	REQ_SEND;
1299	}	1312	}
1300		1313
		1314	UV
		1315	major (UV dev)
		1316	ALIAS:
		1317	minor = 1
		1318	CODE:
		1319	RETVAL = ix ? major (dev) : minor (dev);
		1320	OUTPUT:
		1321	RETVAL
		1322
		1323	UV
		1324	makedev (UV maj, UV min)
		1325	CODE:
		1326	RETVAL = makedev (maj, min);
		1327	OUTPUT:
		1328	RETVAL
		1329
1301	void	1330	void
		1331	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1332	PPCODE:
		1333	{
		1334	dREQ;
		1335
		1336	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1337	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1338	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1339
		1340	REQ_SEND;
		1341	}
		1342
		1343	void
		1344	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1345	PPCODE:
		1346	{
		1347	dREQ;
		1348
		1349	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1350	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1351
		1352	REQ_SEND;
		1353	}
		1354
		1355	void
		1356	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1357	PPCODE:
		1358	{
		1359	dREQ;
		1360
		1361	req->int2 = mode;
		1362	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
		1373	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1374	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1375	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1376
		1377	REQ_SEND;
		1378	}
		1379
		1380	void
		1381	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->type = EIO_READDIR;
		1387	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1388
		1389	if (flags & EIO_READDIR_DENTS)
		1390	req->int1 |= EIO_READDIR_CUSTOM2;
		1391
		1392	req_set_path1 (req, pathname);
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1399	PPCODE:
		1400	{
		1401	dREQ;
		1402
		1403	req->type = EIO_MKDIR;
		1404	req->int2 = mode;
		1405	req_set_path1 (req, pathname);
		1406
		1407	REQ_SEND;
		1408	}
		1409
		1410	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1411	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	1412	ALIAS:
1306	aio_unlink = REQ_UNLINK	1413	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	1414	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	1415	aio_readdir = EIO_READDIR
1309	PPCODE:	1416	PPCODE:
1310	{	1417	{
1311	dREQ;	1418	dREQ;
1312		1419
1313	req->type = ix;	1420	req->type = ix;
1314	req->data = newSVsv (pathname);	1421	req_set_path1 (req, pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1422
1316
1317	REQ_SEND;	1423	REQ_SEND;
1318	}	1424	}
1319		1425
1320	void	1426	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1427	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:	1428	ALIAS:
1326	aio_link = REQ_LINK	1429	aio_link = EIO_LINK
1327	aio_symlink = REQ_SYMLINK	1430	aio_symlink = EIO_SYMLINK
1328	aio_rename = REQ_RENAME	1431	aio_rename = EIO_RENAME
1329	PPCODE:	1432	PPCODE:
1330	{	1433	{
		1434	eio_wd wd2 = 0;
1331	dREQ;	1435	dREQ;
1332		1436
1333	req->type = ix;	1437	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1438	req_set_path1 (req, oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1439	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1336	req->data = newSVsv (newpath);	1440	req->int3 = (long)wd2;
1337	req->dataptr = SvPVbyte_nolen (req->data);
1338		1441
1339	REQ_SEND;	1442	REQ_SEND;
1340	}	1443	}
1341		1444
1342	void	1445	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1446	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1447	PPCODE:
1347	{	1448	{
1348	dREQ;	1449	dREQ;
1349		1450
1350	req->type = REQ_BUSY;	1451	req->type = EIO_MKNOD;
1351	req->fd = delay < 0. ? 0 : delay;	1452	req->int2 = (mode_t)mode;
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1453	req->offs = dev;
1353		1454	req_set_path1 (req, pathname);
		1455
1354	REQ_SEND;	1456	REQ_SEND;
1355	}	1457	}
1356		1458
1357	void	1459	void
1358	aio_group (callback=&PL_sv_undef)	1460	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1359	SV * callback	1461	ALIAS:
1360	PROTOTYPE: ;$	1462	aio_mtouch = EIO_MTOUCH
		1463	aio_msync = EIO_MSYNC
1361	PPCODE:	1464	PPCODE:
1362	{	1465	{
		1466	STRLEN svlen;
		1467	char *svptr = SvPVbyte (data, svlen);
		1468	UV len = SvUV (length);
		1469
		1470	if (offset < 0)
		1471	offset += svlen;
		1472
		1473	if (offset < 0 || offset > svlen)
		1474	croak ("offset outside of scalar");
		1475
		1476	if (!SvOK (length) || len + offset > svlen)
		1477	len = svlen - offset;
		1478
		1479	{
		1480	dREQ;
		1481
		1482	req->type = ix;
		1483	req->sv2 = SvREFCNT_inc (data);
		1484	req->ptr2 = (char *)svptr + offset;
		1485	req->size = len;
		1486	req->int1 = flags;
		1487
		1488	REQ_SEND;
		1489	}
		1490	}
		1491
		1492	void
		1493	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1494	PPCODE:
		1495	{
		1496	STRLEN svlen;
		1497	char *svptr = SvPVbyte (data, svlen);
		1498	UV len = SvUV (length);
		1499
		1500	if (offset < 0)
		1501	offset += svlen;
		1502
		1503	if (offset < 0 || offset > svlen)
		1504	croak ("offset outside of scalar");
		1505
		1506	if (!SvOK (length) || len + offset > svlen)
		1507	len = svlen - offset;
		1508
		1509	{
		1510	dREQ;
		1511
		1512	req->type = EIO_MLOCK;
		1513	req->sv2 = SvREFCNT_inc (data);
		1514	req->ptr2 = (char *)svptr + offset;
		1515	req->size = len;
		1516
		1517	REQ_SEND;
		1518	}
		1519	}
		1520
		1521	void
		1522	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1523	PPCODE:
		1524	{
		1525	dREQ;
		1526
		1527	req->type = EIO_MLOCKALL;
		1528	req->int1 = flags;
		1529
		1530	REQ_SEND;
		1531	}
		1532
		1533	void
		1534	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1535	PPCODE:
		1536	{
		1537	int fd = s_fileno_croak (fh, 0);
1363	dREQ;	1538	dREQ;
1364		1539
1365	req->type = REQ_GROUP;	1540	req->type = EIO_CUSTOM;
1366	req_send (req);	1541	req->sv1 = newSVsv (fh);
		1542	req->int1 = fd;
1367		1543
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1544	req->feed = fiemap;
1369	}	1545	#if HAVE_FIEMAP
		1546	/* keep our fingers crossed that the next two types are 64 bit */
		1547	req->offs = start;
		1548	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1549	req->int2 = flags;
		1550	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1551	#endif
1370		1552
		1553	REQ_SEND;
		1554	}
		1555
1371	void	1556	void
1372	aio_nop (callback=&PL_sv_undef)	1557	aio_busy (double delay, SV *callback=&PL_sv_undef)
1373	SV * callback
1374	PPCODE:	1558	PPCODE:
1375	{	1559	{
1376	dREQ;	1560	dREQ;
1377		1561
1378	req->type = REQ_NOP;	1562	req->type = EIO_BUSY;
		1563	req->nv1 = delay < 0. ? 0. : delay;
1379		1564
1380	REQ_SEND;	1565	REQ_SEND;
1381	}	1566	}
1382		1567
1383	void	1568	void
1384	aioreq_pri (int pri = DEFAULT_PRI)	1569	aio_group (SV *callback=&PL_sv_undef)
1385	CODE:	1570	PPCODE:
		1571	{
		1572	dREQ;
		1573
		1574	req->type = EIO_GROUP;
		1575
		1576	req_submit (req);
		1577	XPUSHs (req_sv (req, aio_grp_stash));
		1578	}
		1579
		1580	void
		1581	aio_nop (SV *callback=&PL_sv_undef)
		1582	ALIAS:
		1583	aio_nop = EIO_NOP
		1584	aio_sync = EIO_SYNC
		1585	PPCODE:
		1586	{
		1587	dREQ;
		1588
		1589	req->type = ix;
		1590
		1591	REQ_SEND;
		1592	}
		1593
		1594	int
		1595	aioreq_pri (int pri = 0)
		1596	CODE:
		1597	RETVAL = next_pri;
		1598	if (items > 0)
		1599	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1600	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1601	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1602	next_pri = pri;
		1603	}
		1604	OUTPUT:
		1605	RETVAL
1389		1606
1390	void	1607	void
1391	aioreq_nice (int nice = 0)	1608	aioreq_nice (int nice = 0)
1392	CODE:	1609	CODE:
1393	nice = next_pri - nice;	1610	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1611	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1612	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1613	next_pri = nice;
1397		1614
1398	void	1615	void
1399	flush ()	1616	flush ()
1400	PROTOTYPE:
1401	CODE:	1617	CODE:
1402	while (nreqs)	1618	while (eio_nreqs ())
1403	{	1619	{
1404	poll_wait ();	1620	poll_wait ();
1405	poll_cb ();	1621	poll_cb ();
1406	}	1622	}
1407		1623
1408	void	1624	int
1409	poll()	1625	poll ()
1410	PROTOTYPE:
1411	CODE:	1626	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();	1627	poll_wait ();
1415	poll_cb ();	1628	RETVAL = poll_cb ();
1416	}
1417
1418	int
1419	poll_fileno()
1420	PROTOTYPE:
1421	CODE:
1422	RETVAL = respipe [0];
1423	OUTPUT:	1629	OUTPUT:
1424	RETVAL	1630	RETVAL
1425		1631
1426	int	1632	int
		1633	poll_fileno ()
		1634	CODE:
		1635	RETVAL = s_epipe_fd (&respipe);
		1636	OUTPUT:
		1637	RETVAL
		1638
		1639	int
1427	poll_cb(...)	1640	poll_cb (...)
1428	PROTOTYPE:	1641	PROTOTYPE:
1429	CODE:	1642	CODE:
1430	RETVAL = poll_cb ();	1643	RETVAL = poll_cb ();
1431	OUTPUT:	1644	OUTPUT:
1432	RETVAL	1645	RETVAL
1433		1646
1434	void	1647	void
1435	poll_wait()	1648	poll_wait ()
1436	PROTOTYPE:
1437	CODE:	1649	CODE:
1438	if (nreqs)
1439	poll_wait ();	1650	poll_wait ();
1440		1651
1441	int	1652	int
1442	nreqs()	1653	nreqs ()
1443	PROTOTYPE:
1444	CODE:	1654	CODE:
1445	RETVAL = nreqs;	1655	RETVAL = eio_nreqs ();
1446	OUTPUT:	1656	OUTPUT:
1447	RETVAL	1657	RETVAL
1448		1658
		1659	int
		1660	nready ()
		1661	CODE:
		1662	RETVAL = eio_nready ();
		1663	OUTPUT:
		1664	RETVAL
		1665
		1666	int
		1667	npending ()
		1668	CODE:
		1669	RETVAL = eio_npending ();
		1670	OUTPUT:
		1671	RETVAL
		1672
		1673	int
		1674	nthreads ()
		1675	CODE:
		1676	RETVAL = eio_nthreads ();
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	int
		1681	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1682	CODE:
		1683	RETVAL = posix_fadvise (fh, offset, length, advice);
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	IV
		1688	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1689	CODE:
		1690	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1691	OUTPUT:
		1692	RETVAL
		1693
		1694	void
		1695	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1696	PPCODE:
		1697	sv_unmagic (scalar, MMAP_MAGIC);
		1698	{
		1699	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1700	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1701	if (addr == (void *)-1)
		1702	XSRETURN_NO;
		1703
		1704	sv_force_normal (scalar);
		1705
		1706	/* we store the length in mg_obj, as namlen is I32 :/ */
		1707	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1708	->mg_obj = (SV *)length;
		1709
		1710	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1711
		1712	if (!(prot & PROT_WRITE))
		1713	SvREADONLY_on (scalar);
		1714
		1715	if (SvLEN (scalar))
		1716	Safefree (SvPVX (scalar));
		1717
		1718	SvPVX (scalar) = (char *)addr;
		1719	SvCUR_set (scalar, length);
		1720	SvLEN_set (scalar, 0);
		1721	SvPOK_only (scalar);
		1722
		1723	XSRETURN_YES;
		1724	}
		1725
		1726	void
		1727	munmap (SV *scalar)
		1728	CODE:
		1729	sv_unmagic (scalar, MMAP_MAGIC);
		1730
		1731	int
		1732	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1733	ALIAS:
		1734	mprotect = 1
		1735	CODE:
		1736	{
		1737	STRLEN svlen;
		1738	void *addr = SvPVbyte (scalar, svlen);
		1739	size_t len = SvUV (length);
		1740
		1741	if (offset < 0)
		1742	offset += svlen;
		1743
		1744	if (offset < 0 || offset > svlen)
		1745	croak ("offset outside of scalar");
		1746
		1747	if (!SvOK (length) || len + offset > svlen)
		1748	len = svlen - offset;
		1749
		1750	addr = (void *)(((intptr_t)addr) + offset);
		1751	eio_page_align (&addr, &len);
		1752
		1753	switch (ix)
		1754	{
		1755	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1756	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1757	}
		1758	}
		1759	OUTPUT:
		1760	RETVAL
		1761
		1762	int
		1763	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1764	CODE:
		1765	{
		1766	STRLEN svlen;
		1767	void *addr = SvPVbyte (scalar, svlen);
		1768	size_t len = SvUV (length);
		1769
		1770	if (offset < 0)
		1771	offset += svlen;
		1772
		1773	if (offset < 0 || offset > svlen)
		1774	croak ("offset outside of scalar");
		1775
		1776	if (!SvOK (length) || len + offset > svlen)
		1777	len = svlen - offset;
		1778
		1779	addr = (void *)(((intptr_t)addr) + offset);
		1780	eio_page_align (&addr, &len);
		1781	#if _POSIX_MEMLOCK_RANGE
		1782	RETVAL = munlock (addr, len);
		1783	#else
		1784	RETVAL = EIO_ENOSYS ();
		1785	#endif
		1786	}
		1787	OUTPUT:
		1788	RETVAL
		1789
		1790	int
		1791	munlockall ()
		1792	CODE:
		1793	#if _POSIX_MEMLOCK
		1794	munlockall ();
		1795	#else
		1796	RETVAL = EIO_ENOSYS ();
		1797	#endif
		1798	OUTPUT:
		1799	RETVAL
		1800
		1801	int
		1802	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1803	CODE:
		1804	{
		1805	#if HAVE_LINUX_SPLICE
		1806	loff_t off_in_, off_out_;
		1807	RETVAL = splice (
		1808	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1809	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1810	length, flags
		1811	);
		1812	#else
		1813	RETVAL = EIO_ENOSYS ();
		1814	#endif
		1815	}
		1816	OUTPUT:
		1817	RETVAL
		1818
		1819	int
		1820	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1821	CODE:
		1822	#if HAVE_LINUX_SPLICE
		1823	RETVAL = tee (rfh, wfh, length, flags);
		1824	#else
		1825	RETVAL = EIO_ENOSYS ();
		1826	#endif
		1827	OUTPUT:
		1828	RETVAL
		1829
		1830	void _on_next_submit (SV *cb)
		1831	CODE:
		1832	SvREFCNT_dec (on_next_submit);
		1833	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1834
1449	PROTOTYPES: DISABLE	1835	PROTOTYPES: DISABLE
		1836
		1837	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1838
		1839	BOOT:
		1840	{
		1841	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1842	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1843	}
		1844
		1845	void
		1846	DESTROY (SV *self)
		1847	CODE:
		1848	{
		1849	aio_wd wd = SvAIO_WD (self);
		1850	#if HAVE_AT
		1851	{
		1852	SV *callback = &PL_sv_undef;
		1853	dREQ; /* clobbers next_pri :/ */
		1854	next_pri = req->pri; /* restore next_pri */
		1855	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1856	req->type = EIO_WD_CLOSE;
		1857	req->wd = wd;
		1858	REQ_SEND;
		1859	}
		1860	#else
		1861	eio_wd_close_sync (wd);
		1862	#endif
		1863	}
1450		1864
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1865	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1866
1453	void	1867	void
1454	cancel (aio_req_ornot req)	1868	cancel (aio_req_ornot req)
1455	CODE:	1869	CODE:
1456	req_cancel (req);	1870	eio_cancel (req);
1457		1871
1458	void	1872	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1873	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460	CODE:	1874	PPCODE:
		1875	{
		1876	if (GIMME_V != G_VOID)
		1877	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1878
		1879	if (items > 1)
		1880	{
		1881	SV *cb_cv =get_cb (callback);
		1882
1461	SvREFCNT_dec (req->callback);	1883	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	1884	req->callback = SvREFCNT_inc (cb_cv);
		1885	}
		1886	}
1463		1887
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1888	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		1889
1466	void	1890	void
1467	add (aio_req grp, ...)	1891	add (aio_req grp, ...)
1468	PPCODE:	1892	PPCODE:
1469	{	1893	{
1470	int i;	1894	int i;
1471	aio_req req;
1472		1895
1473	if (grp->fd == 2)	1896	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1897	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		1898
1476	for (i = 1; i < items; ++i )	1899	for (i = 1; i < items; ++i )
1477	{	1900	{
		1901	aio_req req;
		1902
1478	if (GIMME_V != G_VOID)	1903	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1904	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		1905
1481	req = SvAIO_REQ (ST (i));	1906	req = SvAIO_REQ (ST (i));
1482		1907
1483	if (req)	1908	if (req)
1484	{	1909	eio_grp_add (grp, req);
1485	++grp->length;
1486	req->grp = grp;
1487
1488	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;
1490
1491	if (grp->grp_first)
1492	grp->grp_first->grp_prev = req;
1493
1494	grp->grp_first = req;
1495	}
1496	}	1910	}
1497	}	1911	}
		1912
		1913	void
		1914	cancel_subs (aio_req_ornot req)
		1915	CODE:
		1916	req_cancel_subs (req);
1498		1917
1499	void	1918	void
1500	result (aio_req grp, ...)	1919	result (aio_req grp, ...)
1501	CODE:	1920	CODE:
1502	{	1921	{
1503	int i;	1922	int i;
		1923	AV *av;
		1924
		1925	grp->errorno = errno;
		1926
1504	AV *av = newAV ();	1927	av = newAV ();
		1928	av_extend (av, items - 1);
1505		1929
1506	for (i = 1; i < items; ++i )	1930	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1931	av_push (av, newSVsv (ST (i)));
1508		1932
1509	SvREFCNT_dec (grp->data);	1933	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1934	grp->sv1 = (SV *)av;
1511	}	1935	}
		1936
		1937	void
		1938	errno (aio_req grp, int errorno = errno)
		1939	CODE:
		1940	grp->errorno = errorno;
1512		1941
1513	void	1942	void
1514	limit (aio_req grp, int limit)	1943	limit (aio_req grp, int limit)
1515	CODE:	1944	CODE:
1516	grp->fd2 = limit;	1945	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		1946
1519	void	1947	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1948	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1949	CODE:
1522	{	1950	{
1523	SvREFCNT_dec (grp->fh2);	1951	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1952	grp->sv2 = newSVsv (callback);
		1953	grp->feed = aio_grp_feed;
1525		1954
1526	if (grp->fd2 <= 0)	1955	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1956	grp->int2 = 2;
1528		1957
1529	aio_grp_feed (grp);	1958	eio_grp_limit (grp, grp->int2);
1530	}	1959	}
1531		1960

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