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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.212 by root, Sun Apr 8 00:11:50 2012 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
34	# 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>
35	# include <sys/sendfile.h>	82	#include <sys/select.h>
36	# elif __freebsd	83	#include <unistd.h>
37	# include <sys/socket.h>	84	#include <utime.h>
38	# include <sys/uio.h>	85	#include <signal.h>
39	# elif __hpux	86
40	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
41	# elif __solaris /* not yet */	88
42	# 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
43	# else	140	# else
44	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	142	# endif
46	#endif	143	#endif
47		144
48	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	146	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		147
53	#ifndef PTHREAD_STACK_MIN	148	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	149	# define makedev(maj,min) (((maj) << 8) | (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif	150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
57		157
58	#if __ia64	158	#ifndef PAGESIZE
59	# define STACKSIZE 65536	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	160	#endif
61	# define STACKSIZE PTHREAD_STACK_MIN	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
62	#else	215	#else
63	# define STACKSIZE 16384	216	errno = ENOSYS;
64	#endif	217	#endif
		218	}
65		219
66	/* buffer size for various temporary buffers */	220	/*****************************************************************************/
67	#define AIO_BUFSIZE 65536
68
69	#define dBUF \
70	char *aio_buf; \
71	LOCK (wrklock); \
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76		221
77	enum {	222	enum {
78	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};	224	};
90		225
91	#define AIO_REQ_KLASS "IO::AIO::REQ"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"
93
94	typedef struct aio_cb
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;
99	SV *fh, *fh2;
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;
107	int type;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111
112	unsigned char flags;
113	unsigned char pri;
114
115	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;
118
119	enum {
120	FLAG_CANCELLED = 0x01,
121	};
122
123	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
125		229
126	enum {	230	static SV *on_next_submit;
127	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	232	static int max_outstanding;
129		233
130	DEFAULT_PRI = 0,	234	static s_epipe respipe;
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		235
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{
171	closedir (wrk->dirp);
172	wrk->dirp = 0;
173	}
174
175	if (wrk->dbuf)
176	{
177	free (wrk->dbuf);
178	wrk->dbuf = 0;
179	}
180	}
181
182	static void worker_free (worker *wrk)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;
229
230	--q->size;
231
232	for (pri = NUM_PRI; pri--; )
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)
237	{
238	if (!(q->qs[pri] = req->next))
239	q->qe[pri] = 0;
240
241	return req;
242	}
243	}
244
245	abort ();
246	}
247
248	static int poll_cb (int max);
249	static void req_invoke (aio_req req);
250	static void req_free (aio_req req);	236	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
252		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
253	/* must be called at most once */	253	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
255	{	256	{
256	if (!req->self)	257	if (!req->self)
257	{	258	{
258	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	261	}
261		262
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	264	}
264		265
265	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)
266	{	274	{
267	MAGIC *mg;	275	MAGIC *mg;
268		276
269	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")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
271		283
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		285
274	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	287	}
276		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
277	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
278	{	302	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
280	{	304	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	305	dSP;
286		306
287	ENTER;	307	ENTER;
288	SAVETMPS;	308	SAVETMPS;
289	PUSHMARK (SP);	309	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	311	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	313	SPAGAIN;
294	FREETMPS;	314	FREETMPS;
295	LEAVE;	315	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	316	}
306	}	317	}
307		318
308	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
309	{	321	{
310	--grp->length;	322	eio_submit (req);
311		323
312	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	325	{
318	req_invoke (grp);	326	dSP;
319	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);
320	}	334	}
321	}	335	}
322		336
323	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
324	{	339	{
325	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
326		342
327	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
328	{	344	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;	345	dSP;
351		346	static SV *sv_result_cache; /* caches the result integer SV */
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	347	SV *sv_result;
353	{
354	errno = req->errorno;
355		348
356	ENTER;	349	ENTER;
357	SAVETMPS;	350	SAVETMPS;
358	PUSHMARK (SP);	351	PUSHMARK (SP);
359	EXTEND (SP, 1);	352	EXTEND (SP, 1);
360		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
361	switch (req->type)	367	switch (req->type)
362	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
363	case REQ_READDIR:	373	case EIO_READDIR:
364	{	374	{
365	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
366		376
367	if (req->result >= 0)	377	if (req->result >= 0)
368	{	378	{
369	int i;	379	int i;
370	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	382	AV *av = newAV ();
372		383
373	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
374		385
375	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
376	{	387	{
377	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		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
379	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);
380	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
381	}	422	}
382		423
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	425	}
385		426
386	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))));
387	}	431	}
388	break;	432	break;
389		433
390	case REQ_OPEN:	434	case EIO_OPEN:
391	{	435	{
392	/* convert fd to fh */	436	/* convert fd to fh */
393	SV *fh;	437	SV *fh = &PL_sv_undef;
394		438
395	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
396	PUTBACK;	440	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
398	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);
399		448
400	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	);
401		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
402	PUSHMARK (SP);	461	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	462	}
405	break;	463	break;
406		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
407	case REQ_GROUP:	497	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
409		499
410	if (req->data)	500	if (req->sv1)
411	{	501	{
412	int i;	502	int i;
413	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
414		504
415	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
418	}	508	}
419	break;	509	break;
420		510
421	case REQ_NOP:	511	case EIO_NOP:
422	case REQ_BUSY:	512	case EIO_BUSY:
423	break;	513	break;
424		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
425	default:	592	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
427	break;	594	break;
428	}	595	}
429		596
		597	errno = req->errorno;
430		598
431	PUTBACK;	599	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	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;
434		607
435	FREETMPS;	608	FREETMPS;
436	LEAVE;	609	LEAVE;
		610
		611	PUTBACK;
437	}	612	}
438		613
439	if (req->grp)	614	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	615	}
459		616
460	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
461	{	619	{
462	if (req->self)	620	if (req->self)
463	{	621	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
466	}	624	}
467		625
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
471	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473		631
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476
477	Safefree (req);	632	free (req);
478	}	633	}
479		634
		635	static void
480	static void req_cancel_subs (aio_req grp)	636	req_cancel_subs (aio_req grp)
481	{	637	{
482	aio_req sub;
483
484	if (grp->type != REQ_GROUP)	638	if (grp->type != EIO_GROUP)
485	return;	639	return;
486		640
487	SvREFCNT_dec (grp->fh2);	641	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	642	grp->sv2 = 0;
489		643
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	644	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	645	}
493		646
494	static void req_cancel (aio_req req)	647	static void ecb_cold
		648	create_respipe (void)
495	{	649	{
496	req->flags |= FLAG_CANCELLED;	650	if (s_epipe_renew (&respipe))
497		651	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	652	}
500		653
501	static int poll_cb (int max)	654	static void
		655	poll_wait (void)
502	{	656	{
503	dSP;	657	while (eio_nreqs ())
504	int count = 0;	658	{
505	int do_croak = 0;	659	int size;
		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	{
		677	for (;;)
		678	{
		679	int res = eio_poll ();
		680
		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) (errno = ENOSYS, -1)
		704	# define munmap(addr,length) (errno = ENOSYS, -1)
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		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;
506	aio_req req;	756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
507		759
508	while (max <= 0 || count < max)	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)))
509	{	787	{
510	LOCK (reslock);	788	SV *rv = SvRV (path);
511	req = reqq_shift (&res_queue);	789	SV *wdob;
512		790
513	if (req)	791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
514	{	792	{
515	if (!res_queue.size)	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
		795
		796	if (SvOK (wdob))
516	{	797	{
517	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
518	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
522	}	803	}
523		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{	805	{
535	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
536	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
537	}	810	}
538	else	811	else
539	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	813	}
560		814
561	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
562	}	817	}
563		818
564	static void *aio_proc(void *arg);	819	static void ecb_noinline
565		820	req_set_path1 (aio_req req, SV *path)
566	static void start_thread (void)
567	{	821	{
568	sigset_t fullsigset, oldsigset;	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
569	pthread_attr_t attr;	823	}
570		824
571	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;
572		829
573	if (!wrk)	830	switch (SvTYPE (rv))
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	831	{
587	wrk->prev = &wrk_first;	832	case SVt_PVIO:
588	wrk->next = wrk_first.next;	833	case SVt_PVLV:
589	wrk_first.next->prev = wrk;	834	case SVt_PVGV:
590	wrk_first.next = wrk;	835	req->type = type_fh;
591	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;
592	}	844	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	845	}
599		846
600	static void req_send (aio_req req)	847	XS(boot_IO__AIO) ecb_cold;
601	{
602	while (started < wanted && nreqs >= started)
603	start_thread ();
604		848
605	++nreqs;	849	MODULE = IO::AIO PACKAGE = IO::AIO
606		850
607	LOCK (reqlock);	851	PROTOTYPES: ENABLE
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612		852
613	static void end_thread (void)	853	BOOT:
614	{	854	{
615	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 },
616		862
617	Newz (0, req, 1, aio_cb);	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
618		864
619	req->type = REQ_QUIT;	865	const_iv (ENOSYS)
620	req->pri = PRI_MAX + PRI_BIAS;	866	const_iv (EXDEV)
		867	const_iv (EBADR)
621		868
622	req_send (req);	869	const_iv (O_RDONLY)
623	}	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)
624		876
625	static void min_parallel (int nthreads)	877	const_iv (O_ASYNC)
626	{	878	const_iv (O_DIRECT)
627	if (wanted < nthreads)	879	const_iv (O_NOATIME)
628	wanted = nthreads;
629	}
630		880
631	static void max_parallel (int nthreads)	881	const_iv (O_CLOEXEC)
632	{	882	const_iv (O_NOCTTY)
633	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)
634		892
635	if (wanted > nthreads)	893	const_iv (S_IFIFO)
636	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)
637		902
638	while (cur > wanted)	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
639	{	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
640	end_thread ();	905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
641	cur--;	906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
642	}	907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
643		909
644	while (started > wanted)	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
645	{	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
646	poll_wait ();	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
647	poll_cb (0);	913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
648	}	914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
649	}
650		915
651	static void create_pipe ()	916	const_iv (ST_RDONLY)
652	{	917	const_iv (ST_NOSUID)
653	if (pipe (respipe))	918	const_iv (ST_NODEV)
654	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)
655		928
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	929	const_iv (PROT_NONE)
657	croak ("cannot set result pipe to nonblocking mode");	930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
658		933
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	934	/*const_iv (MAP_FIXED)*/
660	croak ("cannot set result pipe to nonblocking mode");	935	const_iv (MAP_PRIVATE)
661	}	936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
662		938
663	/*****************************************************************************/	939	/* linuxish */
664	/* 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)
665		945
666	#if !HAVE_PREADWRITE	946	const_iv (FIEMAP_FLAG_SYNC)
667	# define pread aio_pread	947	const_iv (FIEMAP_FLAG_XATTR)
668	# 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)
669		960
670	/*	961	const_eio (SEEK_SET)
671	* make our pread/pwrite safe against themselves, but not against	962	const_eio (SEEK_CUR)
672	* normal read/write by using a mutex. slows down execution a lot,	963	const_eio (SEEK_END)
673	* but that's your problem, not mine.
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676		964
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	965	const_eio (MCL_FUTURE)
678	{	966	const_eio (MCL_CURRENT)
679	ssize_t res;
680	off_t ooffset;
681		967
682	LOCK (preadwritelock);	968	const_eio (MS_ASYNC)
683	ooffset = lseek (fd, 0, SEEK_CUR);	969	const_eio (MS_INVALIDATE)
684	lseek (fd, offset, SEEK_SET);	970	const_eio (MS_SYNC)
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688		971
689	return res;	972	const_eio (MT_MODIFY)
690	}
691		973
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	974	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
693	{	975	const_eio (SYNC_FILE_RANGE_WRITE)
694	ssize_t res;	976	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
695	off_t ooffset;
696		977
697	LOCK (preadwritelock);	978	const_eio (FALLOC_FL_KEEP_SIZE)
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703		979
704	return res;	980	const_eio (READDIR_DENTS)
705	}	981	const_eio (READDIR_DIRS_FIRST)
706	#endif	982	const_eio (READDIR_STAT_ORDER)
		983	const_eio (READDIR_FOUND_UNKNOWN)
707		984
708	#if !HAVE_FDATASYNC	985	const_eio (DT_UNKNOWN)
709	# define fdatasync fsync	986	const_eio (DT_FIFO)
710	#endif	987	const_eio (DT_CHR)
711		988	const_eio (DT_DIR)
712	#if !HAVE_READAHEAD	989	const_eio (DT_BLK)
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	990	const_eio (DT_REG)
714		991	const_eio (DT_LNK)
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	992	const_eio (DT_SOCK)
716	{	993	const_eio (DT_WHT)
717	dBUF;
718
719	while (count > 0)
720	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}	994	};
788		995
789	# elif __hpux	996	aio_stash = gv_stashpv ("IO::AIO" , 1);
790	res = sendfile (ofd, ifd, offset, count, 0, 0);	997	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		998	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		999	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
791		1000
792	# elif __solaris	1001	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
793	{	1002	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
794	struct sendfilevec vec;
795	size_t sbytes;
796		1003
797	vec.sfv_fd = ifd;	1004	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801		1005
802	res = sendfilev (ofd, &vec, 1, &sbytes);	1006	reinit ();
		1007	}
803		1008
804	if (res < 0 && sbytes)	1009	void
		1010	reinit ()
		1011	PROTOTYPE:
		1012
		1013	void
		1014	max_poll_reqs (unsigned int nreqs)
		1015	PROTOTYPE: $
		1016	CODE:
		1017	eio_set_max_poll_reqs (nreqs);
		1018
		1019	void
		1020	max_poll_time (double nseconds)
		1021	PROTOTYPE: $
		1022	CODE:
		1023	eio_set_max_poll_time (nseconds);
		1024
		1025	void
		1026	min_parallel (unsigned int nthreads)
		1027	PROTOTYPE: $
		1028	CODE:
		1029	eio_set_min_parallel (nthreads);
		1030
		1031	void
		1032	max_parallel (unsigned int nthreads)
		1033	PROTOTYPE: $
		1034	CODE:
		1035	eio_set_max_parallel (nthreads);
		1036
		1037	void
		1038	max_idle (unsigned int nthreads)
		1039	PROTOTYPE: $
		1040	CODE:
		1041	eio_set_max_idle (nthreads);
		1042
		1043	void
		1044	idle_timeout (unsigned int seconds)
		1045	PROTOTYPE: $
		1046	CODE:
		1047	eio_set_idle_timeout (seconds);
		1048
		1049	void
		1050	max_outstanding (unsigned int maxreqs)
		1051	PROTOTYPE: $
		1052	CODE:
		1053	max_outstanding = maxreqs;
		1054
		1055	void
		1056	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->type = EIO_WD_OPEN;
		1062	req_set_path1 (req, pathname);
		1063
		1064	REQ_SEND;
		1065	}
		1066
		1067	void
		1068	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1069	PPCODE:
		1070	{
		1071	dREQ;
		1072
		1073	req->type = EIO_OPEN;
		1074	req_set_path1 (req, pathname);
		1075	req->int1 = flags;
		1076	req->int2 = mode;
		1077
		1078	REQ_SEND;
		1079	}
		1080
		1081	void
		1082	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1083	ALIAS:
		1084	aio_fsync = EIO_FSYNC
		1085	aio_fdatasync = EIO_FDATASYNC
		1086	aio_syncfs = EIO_SYNCFS
		1087	PPCODE:
		1088	{
		1089	int fd = s_fileno_croak (fh, 0);
		1090	dREQ;
		1091
		1092	req->type = ix;
		1093	req->sv1 = newSVsv (fh);
		1094	req->int1 = fd;
		1095
		1096	REQ_SEND;
		1097	}
		1098
		1099	void
		1100	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1101	PPCODE:
		1102	{
		1103	int fd = s_fileno_croak (fh, 0);
		1104	dREQ;
		1105
		1106	req->type = EIO_SYNC_FILE_RANGE;
		1107	req->sv1 = newSVsv (fh);
		1108	req->int1 = fd;
		1109	req->offs = offset;
805	res = sbytes;	1110	req->size = nbytes;
806	}	1111	req->int2 = flags;
807		1112
808	# endif	1113	REQ_SEND;
		1114	}
		1115
		1116	void
		1117	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_FALLOCATE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->int2 = mode;
		1127	req->offs = offset;
		1128	req->size = len;
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1138	int fd = s_fileno_croak (fh, 0);
		1139	dREQ;
		1140
		1141	if (expect_false (close_fd < 0))
		1142	{
		1143	int pipefd [2];
		1144
		1145	if (
		1146	#ifdef _WIN32
		1147	_pipe (pipefd, 1, _O_BINARY) < 0
809	#else	1148	#else
810	res = -1;	1149	pipe (pipefd) < 0
811	errno = ENOSYS;	1150	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
812	#endif	1151	#endif
813		1152	|| close (pipefd [1]) < 0
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{	1153	)
835	if (cnt && !res) res = -1;	1154	abort (); /*D*/
836	break;
837	}
838		1155
839	cnt = write (ofd, aio_buf, cnt);	1156	close_fd = pipefd [0];
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}
855
856	/* read a full directory */
857	static void scandir_ (aio_req req, worker *self)
858	{
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}	1157	}
909	}
910		1158
911	if (errno)	1159	req->type = EIO_DUP2;
912	res = -1;	1160	req->int1 = close_fd;
913		1161	req->sv2 = newSVsv (fh);
914	req->result = res;	1162	req->int2 = fd;
915	}
916		1163
917	/*****************************************************************************/	1164	REQ_SEND;
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}	1165	}
1010		1166
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}
1069
1070	#define dREQ \
1071	aio_req req; \
1072	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
1074	\
1075	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \
1077	\
1078	Newz (0, req, 1, aio_cb); \
1079	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \
1081	\
1082	req->callback = newSVsv (callback); \
1083	req->pri = req_pri
1084
1085	#define REQ_SEND \
1086	req_send (req); \
1087	\
1088	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090
1091	MODULE = IO::AIO PACKAGE = IO::AIO
1092
1093	PROTOTYPES: ENABLE
1094
1095	BOOT:
1096	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101
1102	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105
1106	void	1167	void
1107	min_parallel (nthreads)	1168	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1108	int nthreads	1169	PPCODE:
1109	PROTOTYPE: $
1110
1111	void
1112	max_parallel (nthreads)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$
1123	PPCODE:
1124	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1125	dREQ;	1172	dREQ;
1126		1173
1127	req->type = REQ_OPEN;	1174	req->type = EIO_SEEK;
1128	req->data = newSVsv (pathname);	1175	req->sv1 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1176	req->int1 = fd;
1130	req->fd = flags;	1177	req->offs = SvVAL64 (offset);
1131	req->mode = mode;	1178	req->int2 = whence;
1132		1179
1133	REQ_SEND;	1180	REQ_SEND;
1134	}	1181	}
1135		1182
1136	void	1183	void
1137	aio_close (fh,callback=&PL_sv_undef)	1184	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1185	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1186	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1187	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1188	PPCODE:
1169	{	1189	{
1170	aio_req req;
1171	STRLEN svlen;	1190	STRLEN svlen;
		1191	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1192	char *svptr = SvPVbyte (data, svlen);
1173		1193	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1194
1177	if (dataoffset < 0)	1195	if (dataoffset < 0)
1178	dataoffset += svlen;	1196	dataoffset += svlen;
1179		1197
1180	if (dataoffset < 0 || dataoffset > svlen)	1198	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1199	croak ("dataoffset outside of data scalar");
1182		1200
1183	if (ix == REQ_WRITE)	1201	if (ix == EIO_WRITE)
1184	{	1202	{
1185	/* write: check length and adjust. */	1203	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1204	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1205	len = svlen - dataoffset;
1188	}	1206	}
1189	else	1207	else
1190	{	1208	{
1191	/* read: grow scalar as necessary */	1209	/* read: check type and grow scalar as necessary */
		1210	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	1211	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1212	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1213
1198	{	1214	{
1199	dREQ;	1215	dREQ;
1200		1216
1201	req->type = ix;	1217	req->type = ix;
1202	req->fh = newSVsv (fh);	1218	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1219	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1220	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1221	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1222	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1223	req->ptr2 = (char *)svptr + dataoffset;
		1224	req->stroffset = dataoffset;
1209		1225
1210	if (!SvREADONLY (data))	1226	if (!SvREADONLY (data))
1211	{	1227	{
1212	SvREADONLY_on (data);	1228	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1229	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1230	}
1215		1231
1216	REQ_SEND;	1232	REQ_SEND;
1217	}	1233	}
1218	}	1234	}
1219		1235
1220	void	1236	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1237	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1222	SV * out_fh	1238	ALIAS:
1223	SV * in_fh	1239	aio_readlink = EIO_READLINK
1224	UV in_offset	1240	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1241	PPCODE:
1229	{	1242	{
		1243	dREQ;
		1244
		1245	req->type = ix;
		1246	req_set_path1 (req, pathname);
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1253	PPCODE:
		1254	{
		1255	int ifd = s_fileno_croak (in_fh , 0);
		1256	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1257	dREQ;
1231		1258
1232	req->type = REQ_SENDFILE;	1259	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1260	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1261	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1262	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1263	req->int2 = ifd;
1237	req->offset = in_offset;	1264	req->offs = in_offset;
1238	req->length = length;	1265	req->size = length;
1239		1266
1240	REQ_SEND;	1267	REQ_SEND;
1241	}	1268	}
1242		1269
1243	void	1270	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1271	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1272	PPCODE:
1251	{	1273	{
		1274	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1275	dREQ;
1253		1276
1254	req->type = REQ_READAHEAD;	1277	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1278	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1279	req->int1 = fd;
1257	req->offset = offset;	1280	req->offs = offset;
1258	req->length = length;	1281	req->size = length;
1259		1282
1260	REQ_SEND;	1283	REQ_SEND;
1261	}	1284	}
1262		1285
1263	void	1286	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1287	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1288	ALIAS:
1268	aio_stat = REQ_STAT	1289	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1290	aio_lstat = EIO_LSTAT
		1291	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1292	PPCODE:
1271	{	1293	{
1272	dREQ;	1294	dREQ;
1273		1295
1274	New (0, req->statdata, 1, Stat_t);	1296	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280
1281	if (SvPOK (fh_or_path))
1282	{
1283	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);
1286	}
1287	else
1288	{
1289	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}
1293		1297
1294	REQ_SEND;	1298	REQ_SEND;
1295	}	1299	}
1296		1300
		1301	UV
		1302	major (UV dev)
		1303	ALIAS:
		1304	minor = 1
		1305	CODE:
		1306	RETVAL = ix ? major (dev) : minor (dev);
		1307	OUTPUT:
		1308	RETVAL
		1309
		1310	UV
		1311	makedev (UV maj, UV min)
		1312	CODE:
		1313	RETVAL = makedev (maj, min);
		1314	OUTPUT:
		1315	RETVAL
		1316
1297	void	1317	void
		1318	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1324	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1325	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1326
		1327	REQ_SEND;
		1328	}
		1329
		1330	void
		1331	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1332	PPCODE:
		1333	{
		1334	dREQ;
		1335
		1336	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1337	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
		1348	req->int2 = mode;
		1349	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1350
		1351	REQ_SEND;
		1352	}
		1353
		1354	void
		1355	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1361	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1362	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
		1373	req->type = EIO_READDIR;
		1374	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1375
		1376	if (flags & EIO_READDIR_DENTS)
		1377	req->int1 |= EIO_READDIR_CUSTOM2;
		1378
		1379	req_set_path1 (req, pathname);
		1380
		1381	REQ_SEND;
		1382	}
		1383
		1384	void
		1385	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1386	PPCODE:
		1387	{
		1388	dREQ;
		1389
		1390	req->type = EIO_MKDIR;
		1391	req->int2 = mode;
		1392	req_set_path1 (req, pathname);
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1398	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1399	ALIAS:
1302	aio_unlink = REQ_UNLINK	1400	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1401	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1402	aio_readdir = EIO_READDIR
1305	PPCODE:	1403	PPCODE:
1306	{	1404	{
1307	dREQ;	1405	dREQ;
1308		1406
1309	req->type = ix;	1407	req->type = ix;
1310	req->data = newSVsv (pathname);	1408	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1409
1312
1313	REQ_SEND;	1410	REQ_SEND;
1314	}	1411	}
1315		1412
1316	void	1413	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1414	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1415	ALIAS:
1322	aio_link = REQ_LINK	1416	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1417	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1418	aio_rename = EIO_RENAME
1325	PPCODE:	1419	PPCODE:
1326	{	1420	{
		1421	eio_wd wd2 = 0;
1327	dREQ;	1422	dREQ;
1328		1423
1329	req->type = ix;	1424	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1425	req_set_path1 (req, oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1426	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332	req->data = newSVsv (newpath);	1427	req->int3 = (long)wd2;
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1428
1335	REQ_SEND;	1429	REQ_SEND;
1336	}	1430	}
1337		1431
1338	void	1432	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1433	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1434	PPCODE:
1343	{	1435	{
1344	dREQ;	1436	dREQ;
1345		1437
1346	req->type = REQ_BUSY;	1438	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1439	req->int2 = (mode_t)mode;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1440	req->offs = dev;
1349		1441	req_set_path1 (req, pathname);
		1442
1350	REQ_SEND;	1443	REQ_SEND;
1351	}	1444	}
1352		1445
1353	void	1446	void
1354	aio_group (callback=&PL_sv_undef)	1447	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1355	SV * callback	1448	ALIAS:
1356	PROTOTYPE: ;$	1449	aio_mtouch = EIO_MTOUCH
		1450	aio_msync = EIO_MSYNC
1357	PPCODE:	1451	PPCODE:
1358	{	1452	{
		1453	STRLEN svlen;
		1454	char *svptr = SvPVbyte (data, svlen);
		1455	UV len = SvUV (length);
		1456
		1457	if (offset < 0)
		1458	offset += svlen;
		1459
		1460	if (offset < 0 || offset > svlen)
		1461	croak ("offset outside of scalar");
		1462
		1463	if (!SvOK (length) || len + offset > svlen)
		1464	len = svlen - offset;
		1465
		1466	{
		1467	dREQ;
		1468
		1469	req->type = ix;
		1470	req->sv2 = SvREFCNT_inc (data);
		1471	req->ptr2 = (char *)svptr + offset;
		1472	req->size = len;
		1473	req->int1 = flags;
		1474
		1475	REQ_SEND;
		1476	}
		1477	}
		1478
		1479	void
		1480	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1481	PPCODE:
		1482	{
		1483	STRLEN svlen;
		1484	char *svptr = SvPVbyte (data, svlen);
		1485	UV len = SvUV (length);
		1486
		1487	if (offset < 0)
		1488	offset += svlen;
		1489
		1490	if (offset < 0 || offset > svlen)
		1491	croak ("offset outside of scalar");
		1492
		1493	if (!SvOK (length) || len + offset > svlen)
		1494	len = svlen - offset;
		1495
		1496	{
		1497	dREQ;
		1498
		1499	req->type = EIO_MLOCK;
		1500	req->sv2 = SvREFCNT_inc (data);
		1501	req->ptr2 = (char *)svptr + offset;
		1502	req->size = len;
		1503
		1504	REQ_SEND;
		1505	}
		1506	}
		1507
		1508	void
		1509	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1510	PPCODE:
		1511	{
		1512	dREQ;
		1513
		1514	req->type = EIO_MLOCKALL;
		1515	req->int1 = flags;
		1516
		1517	REQ_SEND;
		1518	}
		1519
		1520	void
		1521	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1522	PPCODE:
		1523	{
		1524	int fd = s_fileno_croak (fh, 0);
1359	dREQ;	1525	dREQ;
1360		1526
1361	req->type = REQ_GROUP;	1527	req->type = EIO_CUSTOM;
1362	req_send (req);	1528	req->sv1 = newSVsv (fh);
		1529	req->int1 = fd;
1363		1530
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1531	req->feed = fiemap;
1365	}	1532	#if HAVE_FIEMAP
		1533	/* keep our fingers crossed that the next two types are 64 bit */
		1534	req->offs = start;
		1535	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1536	req->int2 = flags;
		1537	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1538	#endif
1366		1539
		1540	REQ_SEND;
		1541	}
		1542
1367	void	1543	void
1368	aio_nop (callback=&PL_sv_undef)	1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
1369	SV * callback
1370	PPCODE:	1545	PPCODE:
1371	{	1546	{
1372	dREQ;	1547	dREQ;
1373		1548
1374	req->type = REQ_NOP;	1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
1375		1551
1376	REQ_SEND;	1552	REQ_SEND;
1377	}	1553	}
1378		1554
1379	void	1555	void
1380	aioreq_pri (int pri = DEFAULT_PRI)	1556	aio_group (SV *callback=&PL_sv_undef)
1381	CODE:	1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_GROUP;
		1562
		1563	req_submit (req);
		1564	XPUSHs (req_sv (req, aio_grp_stash));
		1565	}
		1566
		1567	void
		1568	aio_nop (SV *callback=&PL_sv_undef)
		1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = ix;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	int
		1582	aioreq_pri (int pri = 0)
		1583	CODE:
		1584	RETVAL = next_pri;
		1585	if (items > 0)
		1586	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1589	next_pri = pri;
		1590	}
		1591	OUTPUT:
		1592	RETVAL
1385		1593
1386	void	1594	void
1387	aioreq_nice (int nice = 0)	1595	aioreq_nice (int nice = 0)
1388	CODE:	1596	CODE:
1389	nice = next_pri - nice;	1597	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1600	next_pri = nice;
1393		1601
1394	void	1602	void
1395	flush ()	1603	flush ()
		1604	CODE:
		1605	while (eio_nreqs ())
		1606	{
		1607	poll_wait ();
		1608	poll_cb ();
		1609	}
		1610
		1611	int
		1612	poll ()
		1613	CODE:
		1614	poll_wait ();
		1615	RETVAL = poll_cb ();
		1616	OUTPUT:
		1617	RETVAL
		1618
		1619	int
		1620	poll_fileno ()
		1621	CODE:
		1622	RETVAL = s_epipe_fd (&respipe);
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
		1627	poll_cb (...)
1396	PROTOTYPE:	1628	PROTOTYPE:
1397	CODE:	1629	CODE:
1398	while (nreqs)
1399	{
1400	poll_wait ();
1401	poll_cb (0);	1630	RETVAL = poll_cb ();
1402	}
1403
1404	void
1405	poll()
1406	PROTOTYPE:
1407	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();
1411	poll_cb (0);
1412	}
1413
1414	int
1415	poll_fileno()
1416	PROTOTYPE:
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:	1631	OUTPUT:
1420	RETVAL	1632	RETVAL
1421		1633
		1634	void
		1635	poll_wait ()
		1636	CODE:
		1637	poll_wait ();
		1638
1422	int	1639	int
1423	poll_cb(...)	1640	nreqs ()
1424	PROTOTYPE:
1425	CODE:	1641	CODE:
1426	RETVAL = poll_cb (0);	1642	RETVAL = eio_nreqs ();
1427	OUTPUT:	1643	OUTPUT:
1428	RETVAL	1644	RETVAL
1429		1645
1430	int	1646	int
1431	poll_some(int max = 0)	1647	nready ()
1432	PROTOTYPE: $
1433	CODE:	1648	CODE:
1434	RETVAL = poll_cb (max);	1649	RETVAL = eio_nready ();
1435	OUTPUT:	1650	OUTPUT:
1436	RETVAL	1651	RETVAL
1437		1652
1438	void	1653	int
1439	poll_wait()	1654	npending ()
1440	PROTOTYPE:
1441	CODE:	1655	CODE:
1442	if (nreqs)	1656	RETVAL = eio_npending ();
1443	poll_wait ();
1444
1445	int
1446	nreqs()
1447	PROTOTYPE:
1448	CODE:
1449	RETVAL = nreqs;
1450	OUTPUT:	1657	OUTPUT:
1451	RETVAL	1658	RETVAL
1452		1659
		1660	int
		1661	nthreads ()
		1662	CODE:
		1663	RETVAL = eio_nthreads ();
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
		1668	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1669	CODE:
		1670	RETVAL = posix_fadvise (fh, offset, length, advice);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	IV
		1675	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1676	CODE:
		1677	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void
		1682	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1683	PPCODE:
		1684	sv_unmagic (scalar, MMAP_MAGIC);
		1685	{
		1686	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1687	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1688	if (addr == (void *)-1)
		1689	XSRETURN_NO;
		1690
		1691	sv_force_normal (scalar);
		1692
		1693	/* we store the length in mg_obj, as namlen is I32 :/ */
		1694	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1695	->mg_obj = (SV *)length;
		1696
		1697	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1698
		1699	if (!(prot & PROT_WRITE))
		1700	SvREADONLY_on (scalar);
		1701
		1702	if (SvLEN (scalar))
		1703	Safefree (SvPVX (scalar));
		1704
		1705	SvPVX (scalar) = (char *)addr;
		1706	SvCUR_set (scalar, length);
		1707	SvLEN_set (scalar, 0);
		1708	SvPOK_only (scalar);
		1709
		1710	XSRETURN_YES;
		1711	}
		1712
		1713	void
		1714	munmap (SV *scalar)
		1715	CODE:
		1716	sv_unmagic (scalar, MMAP_MAGIC);
		1717
		1718	int
		1719	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1720	ALIAS:
		1721	mprotect = 1
		1722	CODE:
		1723	{
		1724	STRLEN svlen;
		1725	void *addr = SvPVbyte (scalar, svlen);
		1726	size_t len = SvUV (length);
		1727
		1728	if (offset < 0)
		1729	offset += svlen;
		1730
		1731	if (offset < 0 || offset > svlen)
		1732	croak ("offset outside of scalar");
		1733
		1734	if (!SvOK (length) || len + offset > svlen)
		1735	len = svlen - offset;
		1736
		1737	addr = (void *)(((intptr_t)addr) + offset);
		1738	eio_page_align (&addr, &len);
		1739
		1740	switch (ix)
		1741	{
		1742	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1743	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1744	}
		1745	}
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	int
		1750	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1751	CODE:
		1752	{
		1753	STRLEN svlen;
		1754	void *addr = SvPVbyte (scalar, svlen);
		1755	size_t len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	addr = (void *)(((intptr_t)addr) + offset);
		1767	eio_page_align (&addr, &len);
		1768	#if _POSIX_MEMLOCK_RANGE
		1769	RETVAL = munlock (addr, len);
		1770	#else
		1771	RETVAL = ((errno = ENOSYS), -1);
		1772	#endif
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlockall ()
		1779	CODE:
		1780	#if _POSIX_MEMLOCK
		1781	munlockall ();
		1782	#else
		1783	RETVAL = -1;
		1784	errno = ENOSYS;
		1785	#endif
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void _on_next_submit (SV *cb)
		1790	CODE:
		1791	SvREFCNT_dec (on_next_submit);
		1792	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1793
1453	PROTOTYPES: DISABLE	1794	PROTOTYPES: DISABLE
		1795
		1796	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1797
		1798	BOOT:
		1799	{
		1800	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1801	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1802	}
		1803
		1804	void
		1805	DESTROY (SV *self)
		1806	CODE:
		1807	{
		1808	aio_wd wd = SvAIO_WD (self);
		1809	#if HAVE_AT
		1810	{
		1811	SV *callback = &PL_sv_undef;
		1812	dREQ; /* clobbers next_pri :/ */
		1813	next_pri = req->pri; /* restore next_pri */
		1814	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1815	req->type = EIO_WD_CLOSE;
		1816	req->wd = wd;
		1817	REQ_SEND;
		1818	}
		1819	#else
		1820	eio_wd_close_sync (wd);
		1821	#endif
		1822	}
1454		1823
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1825
1457	void	1826	void
1458	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1459	CODE:	1828	CODE:
1460	req_cancel (req);	1829	eio_cancel (req);
1461		1830
1462	void	1831	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1833	PPCODE:
		1834	{
		1835	if (GIMME_V != G_VOID)
		1836	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1837
		1838	if (items > 1)
		1839	{
		1840	SV *cb_cv =get_cb (callback);
		1841
1465	SvREFCNT_dec (req->callback);	1842	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
1467		1846
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1848
1470	void	1849	void
1471	add (aio_req grp, ...)	1850	add (aio_req grp, ...)
1472	PPCODE:	1851	PPCODE:
1473	{	1852	{
1474	int i;	1853	int i;
1475	aio_req req;
1476		1854
1477	if (grp->fd == 2)	1855	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1856	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1857
1480	for (i = 1; i < items; ++i )	1858	for (i = 1; i < items; ++i )
1481	{	1859	{
		1860	aio_req req;
		1861
1482	if (GIMME_V != G_VOID)	1862	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1864
1485	req = SvAIO_REQ (ST (i));	1865	req = SvAIO_REQ (ST (i));
1486		1866
1487	if (req)	1867	if (req)
1488	{	1868	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1869	}
1501	}	1870	}
1502		1871
1503	void	1872	void
1504	cancel_subs (aio_req_ornot req)	1873	cancel_subs (aio_req_ornot req)
…		…
1508	void	1877	void
1509	result (aio_req grp, ...)	1878	result (aio_req grp, ...)
1510	CODE:	1879	CODE:
1511	{	1880	{
1512	int i;	1881	int i;
		1882	AV *av;
		1883
		1884	grp->errorno = errno;
		1885
1513	AV *av = newAV ();	1886	av = newAV ();
		1887	av_extend (av, items - 1);
1514		1888
1515	for (i = 1; i < items; ++i )	1889	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1890	av_push (av, newSVsv (ST (i)));
1517		1891
1518	SvREFCNT_dec (grp->data);	1892	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1893	grp->sv1 = (SV *)av;
1520	}	1894	}
		1895
		1896	void
		1897	errno (aio_req grp, int errorno = errno)
		1898	CODE:
		1899	grp->errorno = errorno;
1521		1900
1522	void	1901	void
1523	limit (aio_req grp, int limit)	1902	limit (aio_req grp, int limit)
1524	CODE:	1903	CODE:
1525	grp->fd2 = limit;	1904	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1905
1528	void	1906	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1908	CODE:
1531	{	1909	{
1532	SvREFCNT_dec (grp->fh2);	1910	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
1534		1913
1535	if (grp->fd2 <= 0)	1914	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1915	grp->int2 = 2;
1537		1916
1538	aio_grp_feed (grp);	1917	eio_grp_limit (grp, grp->int2);
1539	}	1918	}
1540		1919

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