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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 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 unsigned int started, wanted;
138	static volatile unsigned int nreqs;
139	static volatile unsigned int max_outstanding = 0xffffffff;
140	static int respipe [2];
141
142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144	#else
145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
146	#endif
147
148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
150
151	/* worker threads management */
152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
153
154	typedef struct worker {
155	/* locked by wrklock */
156	struct worker *prev, *next;
157
158	pthread_t tid;
159
160	/* locked by reslock, reqlock or wrklock */
161	aio_req req; /* currently processed request */
162	void *dbuf;
163	DIR *dirp;
164	} worker;
165
166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
167
168	static void worker_clear (worker *wrk)
169	{
170	if (wrk->dirp)
171	{
172	closedir (wrk->dirp);
173	wrk->dirp = 0;
174	}
175
176	if (wrk->dbuf)
177	{
178	free (wrk->dbuf);
179	wrk->dbuf = 0;
180	}
181	}
182
183	static void worker_free (worker *wrk)
184	{
185	wrk->next->prev = wrk->prev;
186	wrk->prev->next = wrk->next;
187
188	free (wrk);
189	}
190
191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
194
195	/*
196	* a somewhat faster data structure might be nice, but
197	* with 8 priorities this actually needs <20 insns
198	* per shift, the most expensive operation.
199	*/
200	typedef struct {
201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
202	int size;
203	} reqq;
204
205	static reqq req_queue;
206	static reqq res_queue;
207
208	int reqq_push (reqq *q, aio_req req)
209	{
210	int pri = req->pri;
211	req->next = 0;
212
213	if (q->qe[pri])
214	{
215	q->qe[pri]->next = req;
216	q->qe[pri] = req;
217	}
218	else
219	q->qe[pri] = q->qs[pri] = req;
220
221	return q->size++;
222	}
223
224	aio_req reqq_shift (reqq *q)
225	{
226	int pri;
227
228	if (!q->size)
229	return 0;
230
231	--q->size;
232
233	for (pri = NUM_PRI; pri--; )
234	{
235	aio_req req = q->qs[pri];
236
237	if (req)
238	{
239	if (!(q->qs[pri] = req->next))
240	q->qe[pri] = 0;
241
242	return req;
243	}
244	}
245
246	abort ();
247	}
248
249	static int poll_cb (int max);
250	static void req_invoke (aio_req req);
251	static void req_free (aio_req req);	236	static void req_destroy (aio_req req);
252	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
253		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
254	/* must be called at most once */	253	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
256	{	256	{
257	if (!req->self)	257	if (!req->self)
258	{	258	{
259	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
261	}	261	}
262		262
263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
264	}	264	}
265		265
266	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)
267	{	274	{
268	MAGIC *mg;	275	MAGIC *mg;
269		276
270	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")))
271	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
272		283
273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
274		285
275	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	287	}
277		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
278	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
279	{	302	{
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
281	{	304	{
282	int old_len = grp->length;
283
284	if (grp->fh2 && SvOK (grp->fh2))
285	{
286	dSP;	305	dSP;
287		306
288	ENTER;	307	ENTER;
289	SAVETMPS;	308	SAVETMPS;
290	PUSHMARK (SP);	309	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
292	PUTBACK;	311	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	313	SPAGAIN;
295	FREETMPS;	314	FREETMPS;
296	LEAVE;	315	LEAVE;
297	}
298
299	/* stop if no progress has been made */
300	if (old_len == grp->length)
301	{
302	SvREFCNT_dec (grp->fh2);
303	grp->fh2 = 0;
304	break;
305	}
306	}	316	}
307	}	317	}
308		318
309	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
310	{	321	{
311	--grp->length;	322	eio_submit (req);
312		323
313	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
314	aio_grp_feed (grp);
315
316	/* finish, if done */
317	if (!grp->length && grp->fd)
318	{	325	{
319	req_invoke (grp);	326	dSP;
320	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);
321	}	334	}
322	}	335	}
323		336
324	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
325	{	339	{
326	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
327		342
328	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
329	{	344	{
330	int size;
331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332	LOCK (reslock);
333	#endif
334	size = res_queue.size;
335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336	UNLOCK (reslock);
337	#endif
338
339	if (size)
340	return;
341
342	FD_ZERO(&rfd);
343	FD_SET(respipe [0], &rfd);
344
345	select (respipe [0] + 1, &rfd, 0, 0, 0);
346	}
347	}
348
349	static void req_invoke (aio_req req)
350	{
351	dSP;	345	dSP;
352		346	static SV *sv_result_cache; /* caches the result integer SV */
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	347	SV *sv_result;
354	{
355	errno = req->errorno;
356		348
357	ENTER;	349	ENTER;
358	SAVETMPS;	350	SAVETMPS;
359	PUSHMARK (SP);	351	PUSHMARK (SP);
360	EXTEND (SP, 1);	352	EXTEND (SP, 1);
361		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
362	switch (req->type)	367	switch (req->type)
363	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
364	case REQ_READDIR:	373	case EIO_READDIR:
365	{	374	{
366	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
367		376
368	if (req->result >= 0)	377	if (req->result >= 0)
369	{	378	{
370	int i;	379	int i;
371	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
372	AV *av = newAV ();	382	AV *av = newAV ();
373		383
374	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
375		385
376	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
377	{	387	{
378	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
379		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
380	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);
381	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
382	}	422	}
383		423
384	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
385	}	425	}
386		426
387	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))));
388	}	431	}
389	break;	432	break;
390		433
391	case REQ_OPEN:	434	case EIO_OPEN:
392	{	435	{
393	/* convert fd to fh */	436	/* convert fd to fh */
394	SV *fh;	437	SV *fh = &PL_sv_undef;
395		438
396	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
397	PUTBACK;	440	{
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
399	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);
400		448
401	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	);
402		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
403	PUSHMARK (SP);	461	PUSHs (fh);
404	XPUSHs (sv_2mortal (fh));
405	}	462	}
406	break;	463	break;
407		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
408	case REQ_GROUP:	497	case EIO_GROUP:
409	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
410		499
411	if (req->data)	500	if (req->sv1)
412	{	501	{
413	int i;	502	int i;
414	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
415		504
416	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
419	}	508	}
420	break;	509	break;
421		510
422	case REQ_NOP:	511	case EIO_NOP:
423	case REQ_BUSY:	512	case EIO_BUSY:
424	break;	513	break;
425		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
426	default:	592	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	593	PUSHs (sv_result);
428	break;	594	break;
429	}	595	}
430		596
		597	errno = req->errorno;
431		598
432	PUTBACK;	599	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
434	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;
435		607
436	FREETMPS;	608	FREETMPS;
437	LEAVE;	609	LEAVE;
		610
		611	PUTBACK;
438	}	612	}
439		613
440	if (req->grp)	614	return !!SvTRUE (ERRSV);
441	{
442	aio_req grp = req->grp;
443
444	/* unlink request */
445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
447
448	if (grp->grp_first == req)
449	grp->grp_first = req->grp_next;
450
451	aio_grp_dec (grp);
452	}
453
454	if (SvTRUE (ERRSV))
455	{
456	req_free (req);
457	croak (0);
458	}
459	}	615	}
460		616
461	static void req_free (aio_req req)	617	static void
		618	req_destroy (aio_req req)
462	{	619	{
463	if (req->self)	620	if (req->self)
464	{	621	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
467	}	624	}
468		625
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
472	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474		631
475	if (req->type == REQ_READDIR)
476	free (req->data2ptr);
477
478	Safefree (req);	632	free (req);
479	}	633	}
480		634
		635	static void
481	static void req_cancel_subs (aio_req grp)	636	req_cancel_subs (aio_req grp)
482	{	637	{
483	aio_req sub;
484
485	if (grp->type != REQ_GROUP)	638	if (grp->type != EIO_GROUP)
486	return;	639	return;
487		640
488	SvREFCNT_dec (grp->fh2);	641	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	642	grp->sv2 = 0;
490		643
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	644	eio_grp_cancel (grp);
492	req_cancel (sub);
493	}	645	}
494		646
495	static void req_cancel (aio_req req)	647	static void ecb_cold
		648	create_respipe (void)
496	{	649	{
497	req->flags |= FLAG_CANCELLED;	650	if (s_epipe_renew (&respipe))
498		651	croak ("IO::AIO: unable to initialize result pipe");
499	req_cancel_subs (req);
500	}	652	}
501		653
502	static int poll_cb (int max)	654	static void
		655	poll_wait (void)
503	{	656	{
504	dSP;	657	while (eio_nreqs ())
505	int count = 0;	658	{
506	int do_croak = 0;	659	int size;
507	aio_req req;
508		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	{
509	for (;;)	677	for (;;)
510	{	678	{
511	while (max <= 0 || count < max)	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;
		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)
512	{	792	{
513	LOCK (reslock);	793	path = AvARRAY (rv)[1];
514	req = reqq_shift (&res_queue);	794	wdob = AvARRAY (rv)[0];
515		795
516	if (req)	796	if (SvOK (wdob))
517	{	797	{
518	if (!res_queue.size)	798	*wd = SvAIO_WD (wdob);
519	{	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
520	/* read any signals sent by the worker threads */
521	char buf [32];
522	while (read (respipe [0], buf, 32) == 32)
523	;
524	}
525	}
526
527	UNLOCK (reslock);
528
529	if (!req)
530	break;
531
532	--nreqs;
533
534	if (req->type == REQ_QUIT)
535	--started;
536	else if (req->type == REQ_GROUP && req->length)
537	{
538	req->fd = 1; /* mark request as delayed */
539	continue;
540	}	800	}
541	else	801	else
542	{	802	*wd = EIO_INVALID_WD;
543	if (req->type == REQ_READ)
544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547	SvREADONLY_off (req->data);
548
549	if (req->statdata)
550	{
551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552	PL_laststatval = req->result;
553	PL_statcache = *(req->statdata);
554	}
555
556	req_invoke (req);
557
558	count++;
559	}
560
561	req_free (req);
562	}	803	}
		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		805	{
		806	*wd = (aio_wd)(long)SvIVX (rv);
		807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
		810	}
		811	else
		812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		813	}
563		814
564	if (nreqs <= max_outstanding)	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
		817	}
		818
		819	static void ecb_noinline
		820	req_set_path1 (aio_req req, SV *path)
		821	{
		822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		823	}
		824
		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;
		829
		830	switch (SvTYPE (rv))
		831	{
		832	case SVt_PVIO:
		833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
565	break;	838	break;
566		839
567	poll_wait ();	840	default:
568		841	req->type = type_path;
569	max = 0;	842	req_set_path1 (req, fh_or_path);
		843	break;
570	}	844	}
571
572	return count;
573	}	845	}
574		846
575	static void *aio_proc(void *arg);	847	XS(boot_IO__AIO) ecb_cold;
576		848
577	static void start_thread (void)
578	{
579	sigset_t fullsigset, oldsigset;
580	pthread_attr_t attr;
581
582	worker *wrk = calloc (1, sizeof (worker));
583
584	if (!wrk)
585	croak ("unable to allocate worker thread data");
586
587	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);
589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{
598	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;
602	++started;
603	}
604	else
605	free (wrk);
606
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);
609	}
610
611	static void req_send (aio_req req)
612	{
613	while (started < wanted && nreqs >= started)
614	start_thread ();
615
616	++nreqs;
617
618	LOCK (reqlock);
619	reqq_push (&req_queue, req);
620	pthread_cond_signal (&reqwait);
621	UNLOCK (reqlock);
622	}
623
624	static void end_thread (void)
625	{
626	aio_req req;
627
628	Newz (0, req, 1, aio_cb);
629
630	req->type = REQ_QUIT;
631	req->pri = PRI_MAX + PRI_BIAS;
632
633	req_send (req);
634	}
635
636	static void min_parallel (int nthreads)
637	{
638	if (wanted < nthreads)
639	wanted = nthreads;
640	}
641
642	static void max_parallel (int nthreads)
643	{
644	int cur = started;
645
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (cur > wanted)
650	{
651	end_thread ();
652	cur--;
653	}
654
655	while (started > wanted)
656	{
657	poll_wait ();
658	poll_cb (0);
659	}
660	}
661
662	static void create_pipe ()
663	{
664	if (pipe (respipe))
665	croak ("unable to initialize result pipe");
666
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
668	croak ("cannot set result pipe to nonblocking mode");
669
670	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
671	croak ("cannot set result pipe to nonblocking mode");
672	}
673
674	/*****************************************************************************/
675	/* work around various missing functions */
676
677	#if !HAVE_PREADWRITE
678	# define pread aio_pread
679	# define pwrite aio_pwrite
680
681	/*
682	* make our pread/pwrite safe against themselves, but not against
683	* normal read/write by using a mutex. slows down execution a lot,
684	* but that's your problem, not mine.
685	*/
686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
687
688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
689	{
690	ssize_t res;
691	off_t ooffset;
692
693	LOCK (preadwritelock);
694	ooffset = lseek (fd, 0, SEEK_CUR);
695	lseek (fd, offset, SEEK_SET);
696	res = read (fd, buf, count);
697	lseek (fd, ooffset, SEEK_SET);
698	UNLOCK (preadwritelock);
699
700	return res;
701	}
702
703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
704	{
705	ssize_t res;
706	off_t ooffset;
707
708	LOCK (preadwritelock);
709	ooffset = lseek (fd, 0, SEEK_CUR);
710	lseek (fd, offset, SEEK_SET);
711	res = write (fd, buf, count);
712	lseek (fd, offset, SEEK_SET);
713	UNLOCK (preadwritelock);
714
715	return res;
716	}
717	#endif
718
719	#if !HAVE_FDATASYNC
720	# define fdatasync fsync
721	#endif
722
723	#if !HAVE_READAHEAD
724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
725
726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
727	{
728	dBUF;
729
730	while (count > 0)
731	{
732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
733
734	pread (fd, aio_buf, len, offset);
735	offset += len;
736	count -= len;
737	}
738
739	errno = 0;
740	}
741
742	#endif
743
744	#if !HAVE_READDIR_R
745	# define readdir_r aio_readdir_r
746
747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
748
749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
750	{
751	struct dirent *e;
752	int errorno;
753
754	LOCK (readdirlock);
755
756	e = readdir (dirp);
757	errorno = errno;
758
759	if (e)
760	{
761	*res = ent;
762	strcpy (ent->d_name, e->d_name);
763	}
764	else
765	*res = 0;
766
767	UNLOCK (readdirlock);
768
769	errno = errorno;
770	return e ? 0 : -1;
771	}
772	#endif
773
774	/* sendfile always needs emulation */
775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
776	{
777	ssize_t res;
778
779	if (!count)
780	return 0;
781
782	#if HAVE_SENDFILE
783	# if __linux
784	res = sendfile (ofd, ifd, &offset, count);
785
786	# elif __freebsd
787	/*
788	* Of course, the freebsd sendfile is a dire hack with no thoughts
789	* wasted on making it similar to other I/O functions.
790	*/
791	{
792	off_t sbytes;
793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
794
795	if (res < 0 && sbytes)
796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
797	res = sbytes;
798	}
799
800	# elif __hpux
801	res = sendfile (ofd, ifd, offset, count, 0, 0);
802
803	# elif __solaris
804	{
805	struct sendfilevec vec;
806	size_t sbytes;
807
808	vec.sfv_fd = ifd;
809	vec.sfv_flag = 0;
810	vec.sfv_off = offset;
811	vec.sfv_len = count;
812
813	res = sendfilev (ofd, &vec, 1, &sbytes);
814
815	if (res < 0 && sbytes)
816	res = sbytes;
817	}
818
819	# endif
820	#else
821	res = -1;
822	errno = ENOSYS;
823	#endif
824
825	if (res < 0
826	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
827	#if __solaris
828	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
829	#endif
830	)
831	)
832	{
833	/* emulate sendfile. this is a major pain in the ass */
834	dBUF;
835
836	res = 0;
837
838	while (count)
839	{
840	ssize_t cnt;
841
842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
843
844	if (cnt <= 0)
845	{
846	if (cnt && !res) res = -1;
847	break;
848	}
849
850	cnt = write (ofd, aio_buf, cnt);
851
852	if (cnt <= 0)
853	{
854	if (cnt && !res) res = -1;
855	break;
856	}
857
858	offset += cnt;
859	res += cnt;
860	count -= cnt;
861	}
862	}
863
864	return res;
865	}
866
867	/* read a full directory */
868	static void scandir_ (aio_req req, worker *self)
869	{
870	DIR *dirp;
871	union
872	{
873	struct dirent d;
874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
875	} *u;
876	struct dirent *entp;
877	char *name, *names;
878	int memlen = 4096;
879	int memofs = 0;
880	int res = 0;
881	int errorno;
882
883	LOCK (wrklock);
884	self->dirp = dirp = opendir (req->dataptr);
885	self->dbuf = u = malloc (sizeof (*u));
886	req->data2ptr = names = malloc (memlen);
887	UNLOCK (wrklock);
888
889	if (dirp && u && names)
890	for (;;)
891	{
892	errno = 0;
893	readdir_r (dirp, &u->d, &entp);
894
895	if (!entp)
896	break;
897
898	name = entp->d_name;
899
900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
901	{
902	int len = strlen (name) + 1;
903
904	res++;
905
906	while (memofs + len > memlen)
907	{
908	memlen *= 2;
909	LOCK (wrklock);
910	req->data2ptr = names = realloc (names, memlen);
911	UNLOCK (wrklock);
912
913	if (!names)
914	break;
915	}
916
917	memcpy (names + memofs, name, len);
918	memofs += len;
919	}
920	}
921
922	if (errno)
923	res = -1;
924
925	req->result = res;
926	}
927
928	/*****************************************************************************/
929
930	static void *aio_proc (void *thr_arg)
931	{
932	aio_req req;
933	int type;
934	worker *self = (worker *)thr_arg;
935
936	do
937	{
938	LOCK (reqlock);
939
940	for (;;)
941	{
942	self->req = req = reqq_shift (&req_queue);
943
944	if (req)
945	break;
946
947	pthread_cond_wait (&reqwait, &reqlock);
948	}
949
950	UNLOCK (reqlock);
951
952	errno = 0; /* strictly unnecessary */
953	type = req->type; /* remember type for QUIT check */
954
955	if (!(req->flags & FLAG_CANCELLED))
956	switch (type)
957	{
958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
960
961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
963
964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
967
968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
969	case REQ_CLOSE: req->result = close (req->fd); break;
970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
975
976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
977	case REQ_FSYNC: req->result = fsync (req->fd); break;
978	case REQ_READDIR: scandir_ (req, self); break;
979
980	case REQ_BUSY:
981	{
982	struct timeval tv;
983
984	tv.tv_sec = req->fd;
985	tv.tv_usec = req->fd2;
986
987	req->result = select (0, 0, 0, 0, &tv);
988	}
989
990	case REQ_GROUP:
991	case REQ_NOP:
992	case REQ_QUIT:
993	break;
994
995	default:
996	req->result = ENOSYS;
997	break;
998	}
999
1000	req->errorno = errno;
1001
1002	LOCK (reslock);
1003
1004	if (!reqq_push (&res_queue, req))
1005	/* write a dummy byte to the pipe so fh becomes ready */
1006	write (respipe [1], &respipe, 1);
1007
1008	self->req = 0;
1009	worker_clear (self);
1010
1011	UNLOCK (reslock);
1012	}
1013	while (type != REQ_QUIT);
1014
1015	LOCK (wrklock);
1016	worker_free (self);
1017	UNLOCK (wrklock);
1018
1019	return 0;
1020	}
1021
1022	/*****************************************************************************/
1023
1024	static void atfork_prepare (void)
1025	{
1026	LOCK (wrklock);
1027	LOCK (reqlock);
1028	LOCK (reslock);
1029	#if !HAVE_PREADWRITE
1030	LOCK (preadwritelock);
1031	#endif
1032	#if !HAVE_READDIR_R
1033	LOCK (readdirlock);
1034	#endif
1035	}
1036
1037	static void atfork_parent (void)
1038	{
1039	#if !HAVE_READDIR_R
1040	UNLOCK (readdirlock);
1041	#endif
1042	#if !HAVE_PREADWRITE
1043	UNLOCK (preadwritelock);
1044	#endif
1045	UNLOCK (reslock);
1046	UNLOCK (reqlock);
1047	UNLOCK (wrklock);
1048	}
1049
1050	static void atfork_child (void)
1051	{
1052	aio_req prv;
1053
1054	while (prv = reqq_shift (&req_queue))
1055	req_free (prv);
1056
1057	while (prv = reqq_shift (&res_queue))
1058	req_free (prv);
1059
1060	while (wrk_first.next != &wrk_first)
1061	{
1062	worker *wrk = wrk_first.next;
1063
1064	if (wrk->req)
1065	req_free (wrk->req);
1066
1067	worker_clear (wrk);
1068	worker_free (wrk);
1069	}
1070
1071	started = 0;
1072	nreqs = 0;
1073
1074	close (respipe [0]);
1075	close (respipe [1]);
1076	create_pipe ();
1077
1078	atfork_parent ();
1079	}
1080
1081	#define dREQ \
1082	aio_req req; \
1083	int req_pri = next_pri; \
1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
1085	\
1086	if (SvOK (callback) && !SvROK (callback)) \
1087	croak ("callback must be undef or of reference type"); \
1088	\
1089	Newz (0, req, 1, aio_cb); \
1090	if (!req) \
1091	croak ("out of memory during aio_req allocation"); \
1092	\
1093	req->callback = newSVsv (callback); \
1094	req->pri = req_pri
1095
1096	#define REQ_SEND \
1097	req_send (req); \
1098	\
1099	if (GIMME_V != G_VOID) \
1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1101
1102	MODULE = IO::AIO PACKAGE = IO::AIO	849	MODULE = IO::AIO PACKAGE = IO::AIO
1103		850
1104	PROTOTYPES: ENABLE	851	PROTOTYPES: ENABLE
1105		852
1106	BOOT:	853	BOOT:
1107	{	854	{
		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 },
		862
		863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		864
		865	const_iv (ENOSYS)
		866	const_iv (EXDEV)
		867	const_iv (EBADR)
		868
		869	const_iv (O_RDONLY)
		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)
		876
		877	const_iv (O_ASYNC)
		878	const_iv (O_DIRECT)
		879	const_iv (O_NOATIME)
		880
		881	const_iv (O_CLOEXEC)
		882	const_iv (O_NOCTTY)
		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)
		892
		893	const_iv (S_IFIFO)
		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)
		902
		903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		909
		910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		915
		916	const_iv (ST_RDONLY)
		917	const_iv (ST_NOSUID)
		918	const_iv (ST_NODEV)
		919	const_iv (ST_NOEXEC)
		920	const_iv (ST_SYNCHRONOUS)
		921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
		928
		929	const_iv (PROT_NONE)
		930	const_iv (PROT_EXEC)
		931	const_iv (PROT_READ)
		932	const_iv (PROT_WRITE)
		933
		934	/*const_iv (MAP_FIXED)*/
		935	const_iv (MAP_PRIVATE)
		936	const_iv (MAP_SHARED)
		937	const_iv (MAP_ANONYMOUS)
		938
		939	/* linuxish */
		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)
		945
		946	const_iv (FIEMAP_FLAG_SYNC)
		947	const_iv (FIEMAP_FLAG_XATTR)
		948	const_iv (FIEMAP_FLAGS_COMPAT)
		949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
		960
		961	const_eio (SEEK_SET)
		962	const_eio (SEEK_CUR)
		963	const_eio (SEEK_END)
		964
		965	const_eio (MCL_FUTURE)
		966	const_eio (MCL_CURRENT)
		967
		968	const_eio (MS_ASYNC)
		969	const_eio (MS_INVALIDATE)
		970	const_eio (MS_SYNC)
		971
		972	const_eio (MT_MODIFY)
		973
		974	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		975	const_eio (SYNC_FILE_RANGE_WRITE)
		976	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		977
		978	const_eio (FALLOC_FL_KEEP_SIZE)
		979
		980	const_eio (READDIR_DENTS)
		981	const_eio (READDIR_DIRS_FIRST)
		982	const_eio (READDIR_STAT_ORDER)
		983	const_eio (READDIR_FOUND_UNKNOWN)
		984
		985	const_eio (DT_UNKNOWN)
		986	const_eio (DT_FIFO)
		987	const_eio (DT_CHR)
		988	const_eio (DT_DIR)
		989	const_eio (DT_BLK)
		990	const_eio (DT_REG)
		991	const_eio (DT_LNK)
		992	const_eio (DT_SOCK)
		993	const_eio (DT_WHT)
		994	};
		995
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	996	aio_stash = gv_stashpv ("IO::AIO" , 1);
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	997	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	998	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	999	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1112		1000
1113	create_pipe ();	1001	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1002	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1115	}
1116		1003
		1004	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1005
		1006	reinit ();
		1007	}
		1008
1117	void	1009	void
1118	min_parallel (int nthreads)	1010	reinit ()
1119	PROTOTYPE: $	1011	PROTOTYPE:
1120		1012
1121	void	1013	void
1122	max_parallel (int nthreads)	1014	max_poll_reqs (unsigned int nreqs)
1123	PROTOTYPE: $
1124
1125	int
1126	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	1015	PROTOTYPE: $
1128	CODE:	1016	CODE:
1129	RETVAL = max_outstanding;	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:
1130	max_outstanding = maxreqs;	1053	max_outstanding = maxreqs;
1131	OUTPUT:
1132	RETVAL
1133		1054
1134	void	1055	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1056	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1136	SV * pathname
1137	int flags
1138	int mode
1139	SV * callback
1140	PROTOTYPE: $$$;$
1141	PPCODE:	1057	PPCODE:
1142	{	1058	{
1143	dREQ;	1059	dREQ;
1144		1060
1145	req->type = REQ_OPEN;	1061	req->type = EIO_WD_OPEN;
1146	req->data = newSVsv (pathname);	1062	req_set_path1 (req, pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);
1148	req->fd = flags;
1149	req->mode = mode;
1150		1063
1151	REQ_SEND;	1064	REQ_SEND;
1152	}	1065	}
1153		1066
1154	void	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
1155	aio_close (fh,callback=&PL_sv_undef)	1082	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1156	SV * fh
1157	SV * callback
1158	PROTOTYPE: $;$
1159	ALIAS:	1083	ALIAS:
1160	aio_close = REQ_CLOSE
1161	aio_fsync = REQ_FSYNC	1084	aio_fsync = EIO_FSYNC
1162	aio_fdatasync = REQ_FDATASYNC	1085	aio_fdatasync = EIO_FDATASYNC
		1086	aio_syncfs = EIO_SYNCFS
1163	PPCODE:	1087	PPCODE:
1164	{	1088	{
		1089	int fd = s_fileno_croak (fh, 0);
1165	dREQ;	1090	dREQ;
1166		1091
1167	req->type = ix;	1092	req->type = ix;
1168	req->fh = newSVsv (fh);	1093	req->sv1 = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1094	req->int1 = fd;
1170		1095
1171	REQ_SEND (req);	1096	REQ_SEND;
1172	}	1097	}
1173		1098
1174	void	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;
		1110	req->size = nbytes;
		1111	req->int2 = flags;
		1112
		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
		1148	#else
		1149	pipe (pipefd) < 0
		1150	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1151	#endif
		1152	|| close (pipefd [1]) < 0
		1153	)
		1154	abort (); /*D*/
		1155
		1156	close_fd = pipefd [0];
		1157	}
		1158
		1159	req->type = EIO_DUP2;
		1160	req->int1 = close_fd;
		1161	req->sv2 = newSVsv (fh);
		1162	req->int2 = fd;
		1163
		1164	REQ_SEND;
		1165	}
		1166
		1167	void
		1168	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1169	PPCODE:
		1170	{
		1171	int fd = s_fileno_croak (fh, 0);
		1172	dREQ;
		1173
		1174	req->type = EIO_SEEK;
		1175	req->sv1 = newSVsv (fh);
		1176	req->int1 = fd;
		1177	req->offs = SvVAL64 (offset);
		1178	req->int2 = whence;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1184	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	UV length
1179	SV * data
1180	UV dataoffset
1181	SV * callback
1182	ALIAS:	1185	ALIAS:
1183	aio_read = REQ_READ	1186	aio_read = EIO_READ
1184	aio_write = REQ_WRITE	1187	aio_write = EIO_WRITE
1185	PROTOTYPE: $$$$$;$
1186	PPCODE:	1188	PPCODE:
1187	{	1189	{
1188	aio_req req;
1189	STRLEN svlen;	1190	STRLEN svlen;
		1191	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1190	char *svptr = SvPVbyte (data, svlen);	1192	char *svptr = SvPVbyte (data, svlen);
1191		1193	UV len = SvUV (length);
1192	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);
1194		1194
1195	if (dataoffset < 0)	1195	if (dataoffset < 0)
1196	dataoffset += svlen;	1196	dataoffset += svlen;
1197		1197
1198	if (dataoffset < 0 || dataoffset > svlen)	1198	if (dataoffset < 0 || dataoffset > svlen)
1199	croak ("data offset outside of string");	1199	croak ("dataoffset outside of data scalar");
1200		1200
1201	if (ix == REQ_WRITE)	1201	if (ix == EIO_WRITE)
1202	{	1202	{
1203	/* write: check length and adjust. */	1203	/* write: check length and adjust. */
1204	if (length < 0 || length + dataoffset > svlen)	1204	if (!SvOK (length) || len + dataoffset > svlen)
1205	length = svlen - dataoffset;	1205	len = svlen - dataoffset;
1206	}	1206	}
1207	else	1207	else
1208	{	1208	{
1209	/* read: grow scalar as necessary */	1209	/* read: check type and grow scalar as necessary */
		1210	SvUPGRADE (data, SVt_PV);
1210	svptr = SvGROW (data, length + dataoffset);	1211	svptr = SvGROW (data, len + dataoffset + 1);
1211	}	1212	}
1212
1213	if (length < 0)
1214	croak ("length must not be negative");
1215		1213
1216	{	1214	{
1217	dREQ;	1215	dREQ;
1218		1216
1219	req->type = ix;	1217	req->type = ix;
1220	req->fh = newSVsv (fh);	1218	req->sv1 = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1219	req->int1 = fd;
1222	: IoOFP (sv_2io (fh)));	1220	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1223	req->offset = offset;	1221	req->size = len;
1224	req->length = length;
1225	req->data = SvREFCNT_inc (data);	1222	req->sv2 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	1223	req->ptr2 = (char *)svptr + dataoffset;
		1224	req->stroffset = dataoffset;
1227		1225
1228	if (!SvREADONLY (data))	1226	if (!SvREADONLY (data))
1229	{	1227	{
1230	SvREADONLY_on (data);	1228	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	1229	req->flags |= FLAG_SV2_RO_OFF;
1232	}	1230	}
1233		1231
1234	REQ_SEND;	1232	REQ_SEND;
1235	}	1233	}
1236	}	1234	}
1237		1235
1238	void	1236	void
1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1237	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1240	SV * out_fh	1238	ALIAS:
1241	SV * in_fh	1239	aio_readlink = EIO_READLINK
1242	UV in_offset	1240	aio_realpath = EIO_REALPATH
1243	UV length
1244	SV * callback
1245	PROTOTYPE: $$$$;$
1246	PPCODE:	1241	PPCODE:
1247	{	1242	{
		1243	dREQ;
		1244
		1245	req->type = ix;
		1246	req_set_path1 (req, pathname);
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1253	PPCODE:
		1254	{
		1255	int ifd = s_fileno_croak (in_fh , 0);
		1256	int ofd = s_fileno_croak (out_fh, 1);
1248	dREQ;	1257	dREQ;
1249		1258
1250	req->type = REQ_SENDFILE;	1259	req->type = EIO_SENDFILE;
1251	req->fh = newSVsv (out_fh);	1260	req->sv1 = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1261	req->int1 = ofd;
1253	req->fh2 = newSVsv (in_fh);	1262	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1263	req->int2 = ifd;
1255	req->offset = in_offset;	1264	req->offs = in_offset;
1256	req->length = length;	1265	req->size = length;
1257		1266
1258	REQ_SEND;	1267	REQ_SEND;
1259	}	1268	}
1260		1269
1261	void	1270	void
1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1271	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1263	SV * fh
1264	UV offset
1265	IV length
1266	SV * callback
1267	PROTOTYPE: $$$;$
1268	PPCODE:	1272	PPCODE:
1269	{	1273	{
		1274	int fd = s_fileno_croak (fh, 0);
1270	dREQ;	1275	dREQ;
1271		1276
1272	req->type = REQ_READAHEAD;	1277	req->type = EIO_READAHEAD;
1273	req->fh = newSVsv (fh);	1278	req->sv1 = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1279	req->int1 = fd;
1275	req->offset = offset;	1280	req->offs = offset;
1276	req->length = length;	1281	req->size = length;
1277		1282
1278	REQ_SEND;	1283	REQ_SEND;
1279	}	1284	}
1280		1285
1281	void	1286	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	1287	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1283	SV * fh_or_path
1284	SV * callback
1285	ALIAS:	1288	ALIAS:
1286	aio_stat = REQ_STAT	1289	aio_stat = EIO_STAT
1287	aio_lstat = REQ_LSTAT	1290	aio_lstat = EIO_LSTAT
		1291	aio_statvfs = EIO_STATVFS
1288	PPCODE:	1292	PPCODE:
1289	{	1293	{
1290	dREQ;	1294	dREQ;
1291		1295
1292	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);
1293	if (!req->statdata)
1294	{
1295	req_free (req);
1296	croak ("out of memory during aio_req->statdata allocation");
1297	}
1298
1299	if (SvPOK (fh_or_path))
1300	{
1301	req->type = ix;
1302	req->data = newSVsv (fh_or_path);
1303	req->dataptr = SvPVbyte_nolen (req->data);
1304	}
1305	else
1306	{
1307	req->type = REQ_FSTAT;
1308	req->fh = newSVsv (fh_or_path);
1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1310	}
1311		1297
1312	REQ_SEND;	1298	REQ_SEND;
1313	}	1299	}
1314		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
1315	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
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1398	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1317	SV * pathname
1318	SV * callback
1319	ALIAS:	1399	ALIAS:
1320	aio_unlink = REQ_UNLINK	1400	aio_unlink = EIO_UNLINK
1321	aio_rmdir = REQ_RMDIR	1401	aio_rmdir = EIO_RMDIR
1322	aio_readdir = REQ_READDIR	1402	aio_readdir = EIO_READDIR
1323	PPCODE:	1403	PPCODE:
1324	{	1404	{
1325	dREQ;	1405	dREQ;
1326		1406
1327	req->type = ix;	1407	req->type = ix;
1328	req->data = newSVsv (pathname);	1408	req_set_path1 (req, pathname);
1329	req->dataptr = SvPVbyte_nolen (req->data);	1409
1330
1331	REQ_SEND;	1410	REQ_SEND;
1332	}	1411	}
1333		1412
1334	void	1413	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1414	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1336	SV * oldpath
1337	SV * newpath
1338	SV * callback
1339	ALIAS:	1415	ALIAS:
1340	aio_link = REQ_LINK	1416	aio_link = EIO_LINK
1341	aio_symlink = REQ_SYMLINK	1417	aio_symlink = EIO_SYMLINK
1342	aio_rename = REQ_RENAME	1418	aio_rename = EIO_RENAME
1343	PPCODE:	1419	PPCODE:
1344	{	1420	{
		1421	eio_wd wd2 = 0;
1345	dREQ;	1422	dREQ;
1346		1423
1347	req->type = ix;	1424	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1425	req_set_path1 (req, oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1426	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1350	req->data = newSVsv (newpath);	1427	req->int3 = (long)wd2;
1351	req->dataptr = SvPVbyte_nolen (req->data);
1352		1428
1353	REQ_SEND;	1429	REQ_SEND;
1354	}	1430	}
1355		1431
1356	void	1432	void
1357	aio_busy (delay,callback=&PL_sv_undef)	1433	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1358	double delay
1359	SV * callback
1360	PPCODE:	1434	PPCODE:
1361	{	1435	{
1362	dREQ;	1436	dREQ;
1363		1437
1364	req->type = REQ_BUSY;	1438	req->type = EIO_MKNOD;
1365	req->fd = delay < 0. ? 0 : delay;	1439	req->int2 = (mode_t)mode;
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1440	req->offs = dev;
1367		1441	req_set_path1 (req, pathname);
		1442
1368	REQ_SEND;	1443	REQ_SEND;
1369	}	1444	}
1370		1445
1371	void	1446	void
1372	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)
1373	SV * callback	1448	ALIAS:
1374	PROTOTYPE: ;$	1449	aio_mtouch = EIO_MTOUCH
		1450	aio_msync = EIO_MSYNC
1375	PPCODE:	1451	PPCODE:
1376	{	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);
1377	dREQ;	1525	dREQ;
1378		1526
1379	req->type = REQ_GROUP;	1527	req->type = EIO_CUSTOM;
1380	req_send (req);	1528	req->sv1 = newSVsv (fh);
		1529	req->int1 = fd;
1381		1530
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1531	req->feed = fiemap;
1383	}	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
1384		1539
		1540	REQ_SEND;
		1541	}
		1542
1385	void	1543	void
1386	aio_nop (callback=&PL_sv_undef)	1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
1387	SV * callback
1388	PPCODE:	1545	PPCODE:
1389	{	1546	{
1390	dREQ;	1547	dREQ;
1391		1548
1392	req->type = REQ_NOP;	1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
1393		1551
1394	REQ_SEND;	1552	REQ_SEND;
1395	}	1553	}
1396		1554
1397	void	1555	void
1398	aioreq_pri (int pri = DEFAULT_PRI)	1556	aio_group (SV *callback=&PL_sv_undef)
1399	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	{
1400	if (pri < PRI_MIN) pri = PRI_MIN;	1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1401	if (pri > PRI_MAX) pri = PRI_MAX;	1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1402	next_pri = pri + PRI_BIAS;	1589	next_pri = pri;
		1590	}
		1591	OUTPUT:
		1592	RETVAL
1403		1593
1404	void	1594	void
1405	aioreq_nice (int nice = 0)	1595	aioreq_nice (int nice = 0)
1406	CODE:	1596	CODE:
1407	nice = next_pri - nice;	1597	nice = next_pri - nice;
1408	if (nice < PRI_MIN) nice = PRI_MIN;	1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1409	if (nice > PRI_MAX) nice = PRI_MAX;	1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1410	next_pri = nice + PRI_BIAS;	1600	next_pri = nice;
1411		1601
1412	void	1602	void
1413	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 (...)
1414	PROTOTYPE:	1628	PROTOTYPE:
1415	CODE:	1629	CODE:
1416	while (nreqs)
1417	{
1418	poll_wait ();
1419	poll_cb (0);	1630	RETVAL = poll_cb ();
1420	}
1421
1422	void
1423	poll()
1424	PROTOTYPE:
1425	CODE:
1426	if (nreqs)
1427	{
1428	poll_wait ();
1429	poll_cb (0);
1430	}
1431
1432	int
1433	poll_fileno()
1434	PROTOTYPE:
1435	CODE:
1436	RETVAL = respipe [0];
1437	OUTPUT:	1631	OUTPUT:
1438	RETVAL	1632	RETVAL
1439		1633
		1634	void
		1635	poll_wait ()
		1636	CODE:
		1637	poll_wait ();
		1638
1440	int	1639	int
1441	poll_cb(...)	1640	nreqs ()
1442	PROTOTYPE:
1443	CODE:	1641	CODE:
1444	RETVAL = poll_cb (0);	1642	RETVAL = eio_nreqs ();
1445	OUTPUT:	1643	OUTPUT:
1446	RETVAL	1644	RETVAL
1447		1645
1448	int	1646	int
1449	poll_some(int max = 0)	1647	nready ()
1450	PROTOTYPE: $
1451	CODE:	1648	CODE:
1452	RETVAL = poll_cb (max);	1649	RETVAL = eio_nready ();
1453	OUTPUT:	1650	OUTPUT:
1454	RETVAL	1651	RETVAL
1455		1652
1456	void	1653	int
1457	poll_wait()	1654	npending ()
1458	PROTOTYPE:
1459	CODE:	1655	CODE:
1460	if (nreqs)	1656	RETVAL = eio_npending ();
1461	poll_wait ();
1462
1463	int
1464	nreqs()
1465	PROTOTYPE:
1466	CODE:
1467	RETVAL = nreqs;
1468	OUTPUT:	1657	OUTPUT:
1469	RETVAL	1658	RETVAL
1470		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
1471	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	}
1472		1823
1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474		1825
1475	void	1826	void
1476	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1477	CODE:	1828	CODE:
1478	req_cancel (req);	1829	eio_cancel (req);
1479		1830
1480	void	1831	void
1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1482	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
1483	SvREFCNT_dec (req->callback);	1842	SvREFCNT_dec (req->callback);
1484	req->callback = newSVsv (callback);	1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
1485		1846
1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1487		1848
1488	void	1849	void
1489	add (aio_req grp, ...)	1850	add (aio_req grp, ...)
1490	PPCODE:	1851	PPCODE:
1491	{	1852	{
1492	int i;	1853	int i;
1493	aio_req req;
1494		1854
1495	if (grp->fd == 2)	1855	if (grp->int1 == 2)
1496	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");
1497		1857
1498	for (i = 1; i < items; ++i )	1858	for (i = 1; i < items; ++i )
1499	{	1859	{
		1860	aio_req req;
		1861
1500	if (GIMME_V != G_VOID)	1862	if (GIMME_V != G_VOID)
1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1502		1864
1503	req = SvAIO_REQ (ST (i));	1865	req = SvAIO_REQ (ST (i));
1504		1866
1505	if (req)	1867	if (req)
1506	{	1868	eio_grp_add (grp, req);
1507	++grp->length;
1508	req->grp = grp;
1509
1510	req->grp_prev = 0;
1511	req->grp_next = grp->grp_first;
1512
1513	if (grp->grp_first)
1514	grp->grp_first->grp_prev = req;
1515
1516	grp->grp_first = req;
1517	}
1518	}	1869	}
1519	}	1870	}
1520		1871
1521	void	1872	void
1522	cancel_subs (aio_req_ornot req)	1873	cancel_subs (aio_req_ornot req)
…		…
1526	void	1877	void
1527	result (aio_req grp, ...)	1878	result (aio_req grp, ...)
1528	CODE:	1879	CODE:
1529	{	1880	{
1530	int i;	1881	int i;
		1882	AV *av;
		1883
		1884	grp->errorno = errno;
		1885
1531	AV *av = newAV ();	1886	av = newAV ();
		1887	av_extend (av, items - 1);
1532		1888
1533	for (i = 1; i < items; ++i )	1889	for (i = 1; i < items; ++i )
1534	av_push (av, newSVsv (ST (i)));	1890	av_push (av, newSVsv (ST (i)));
1535		1891
1536	SvREFCNT_dec (grp->data);	1892	SvREFCNT_dec (grp->sv1);
1537	grp->data = (SV *)av;	1893	grp->sv1 = (SV *)av;
1538	}	1894	}
		1895
		1896	void
		1897	errno (aio_req grp, int errorno = errno)
		1898	CODE:
		1899	grp->errorno = errorno;
1539		1900
1540	void	1901	void
1541	limit (aio_req grp, int limit)	1902	limit (aio_req grp, int limit)
1542	CODE:	1903	CODE:
1543	grp->fd2 = limit;	1904	eio_grp_limit (grp, limit);
1544	aio_grp_feed (grp);
1545		1905
1546	void	1906	void
1547	feed (aio_req grp, SV *callback=&PL_sv_undef)	1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
1548	CODE:	1908	CODE:
1549	{	1909	{
1550	SvREFCNT_dec (grp->fh2);	1910	SvREFCNT_dec (grp->sv2);
1551	grp->fh2 = newSVsv (callback);	1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
1552		1913
1553	if (grp->fd2 <= 0)	1914	if (grp->int2 <= 0)
1554	grp->fd2 = 2;	1915	grp->int2 = 2;
1555		1916
1556	aio_grp_feed (grp);	1917	eio_grp_limit (grp, grp->int2);
1557	}	1918	}
1558		1919

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