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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC vs.
Revision 1.209 by root, Sun Apr 1 17:46:02 2012 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
39	# include <sys/socket.h>	72	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
42	# else	298	# else
43	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	300	# endif
45	#endif	301	#endif
46		302	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	303	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	304	#endif
51		305	#ifndef MAP_LOCKED
52	#if __ia64	306	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
59		317
60	/* buffer size for various temporary buffers */	318	#ifndef makedev
61	#define AIO_BUFSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
		320	#endif
		321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
62		327
63	#define dBUF \	328	#ifndef PAGESIZE
64	char *aio_buf; \	329	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	330	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		331
71	enum {	332	enum {
72	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	334	};
84		335
85	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
119		339
120	enum {	340	static SV *on_next_submit;
121	PRI_MIN = -4,	341	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	342	static int max_outstanding;
134	static int respipe [2];
135		343
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	344	static s_epipe respipe;
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		345
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	346	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
246		348
		349	static void
		350	want_poll (void)
		351	{
		352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
		362
247	/* must be called at most once */	363	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
249	{	366	{
250	if (!req->self)	367	if (!req->self)
251	{	368	{
252	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	371	}
255		372
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	374	}
258		375
259	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
260	{	384	{
261	MAGIC *mg;	385	MAGIC *mg;
262		386
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
265		393
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		395
268	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	397	}
270		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
271	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
272	{	412	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	413	if (grp->sv2 && SvOK (grp->sv2))
274	{	414	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	415	dSP;
280		416
281	ENTER;	417	ENTER;
282	SAVETMPS;	418	SAVETMPS;
283	PUSHMARK (SP);	419	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	420	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	421	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	423	SPAGAIN;
288	FREETMPS;	424	FREETMPS;
289	LEAVE;	425	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	426	}
300	}	427	}
301		428
302	static void aio_grp_dec (aio_req grp)	429	static void
		430	req_submit (eio_req *req)
303	{	431	{
304	--grp->length;	432	eio_submit (req);
305		433
306	/* call feeder, if applicable */	434	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	435	{
312	req_invoke (grp);	436	dSP;
313	req_free (grp);	437	SV *cb = sv_2mortal (on_next_submit);
		438
		439	on_next_submit = 0;
		440
		441	PUSHMARK (SP);
		442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
314	}	444	}
315	}	445	}
316		446
317	static void poll_wait ()	447	static int
		448	req_invoke (eio_req *req)
318	{	449	{
319	fd_set rfd;	450	if (req->flags & FLAG_SV2_RO_OFF)
		451	SvREADONLY_off (req->sv2);
320		452
321	while (nreqs)	453	if (!EIO_CANCELLED (req) && req->callback)
322	{	454	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;	455	dSP;
345		456	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	457	SV *sv_result;
347	{
348	errno = req->errorno;
349		458
350	ENTER;	459	ENTER;
351	SAVETMPS;	460	SAVETMPS;
352	PUSHMARK (SP);	461	PUSHMARK (SP);
353	EXTEND (SP, 1);	462	EXTEND (SP, 1);
354		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
		466	{
		467	sv_result = sv_result_cache; sv_result_cache = 0;
		468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
		470	}
		471	else
		472	{
		473	sv_result = newSViv (req->result);
		474	SvREADONLY_on (sv_result);
		475	}
		476
355	switch (req->type)	477	switch (req->type)
356	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
357	case REQ_READDIR:	483	case EIO_READDIR:
358	{	484	{
359	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
360		486
361	if (req->result >= 0)	487	if (req->result >= 0)
362	{	488	{
363	int i;	489	int i;
364	char *buf = req->data2ptr;	490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	492	AV *av = newAV ();
366		493
367	av_extend (av, req->result - 1);	494	av_extend (av, req->result - 1);
368		495
369	for (i = 0; i < req->result; ++i)	496	for (i = 0; i < req->result; ++i)
370	{	497	{
371	SV *sv = newSVpv (buf, 0);	498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
373	av_store (av, i, sv);	522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
		531	}
375	}	532	}
376		533
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	534	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	535	}
379		536
380	PUSHs (rv);	537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	541	}
382	break;	542	break;
383		543
384	case REQ_OPEN:	544	case EIO_OPEN:
385	{	545	{
386	/* convert fd to fh */	546	/* convert fd to fh */
387	SV *fh;	547	SV *fh = &PL_sv_undef;
388		548
389	PUSHs (sv_2mortal (newSViv (req->result)));	549	if (req->result >= 0)
390	PUTBACK;	550	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	551	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
393		558
394	fh = SvREFCNT_inc (POPs);	559	symlen = snprintf (
		560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
395		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
396	PUSHMARK (SP);	571	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	572	}
399	break;	573	break;
400		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
		602	PUSHs (rv);
		603	}
		604
		605	break;
		606
401	case REQ_GROUP:	607	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	608	req->int1 = 2; /* mark group as finished */
403		609
404	if (req->data)	610	if (req->sv1)
405	{	611	{
406	int i;	612	int i;
407	AV *av = (AV *)req->data;	613	AV *av = (AV *)req->sv1;
408		614
409	EXTEND (SP, AvFILL (av) + 1);	615	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	616	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	617	PUSHs (*av_fetch (av, i, 0));
412	}	618	}
413	break;	619	break;
414		620
415	case REQ_NOP:	621	case EIO_NOP:
416	case REQ_BUSY:	622	case EIO_BUSY:
417	break;	623	break;
418		624
		625	case EIO_READLINK:
		626	case EIO_REALPATH:
		627	if (req->result > 0)
		628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		629	break;
		630
		631	case EIO_STAT:
		632	case EIO_LSTAT:
		633	case EIO_FSTAT:
		634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
		636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
		640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_SEEK:
		644	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		645	break;
		646
		647	case EIO_READ:
		648	{
		649	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		650	*SvEND (req->sv2) = 0;
		651	SvPOK_only (req->sv2);
		652	SvSETMAGIC (req->sv2);
		653	PUSHs (sv_result);
		654	}
		655	break;
		656
		657	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		658	if (req->result > 0)
		659	SvIV_set (sv_result, 0);
		660	/* FALLTHROUGH */
		661
419	default:	662	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	663	PUSHs (sv_result);
421	break;	664	break;
422	}	665	}
423		666
		667	errno = req->errorno;
424		668
425	PUTBACK;	669	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	671	SPAGAIN;
		672
		673	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		674	SvREFCNT_dec (sv_result);
		675	else
		676	sv_result_cache = sv_result;
428		677
429	FREETMPS;	678	FREETMPS;
430	LEAVE;	679	LEAVE;
		680
		681	PUTBACK;
431	}	682	}
432		683
433	if (req->grp)	684	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	685	}
453		686
454	static void req_free (aio_req req)	687	static void
		688	req_destroy (aio_req req)
455	{	689	{
456	if (req->self)	690	if (req->self)
457	{	691	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
460	}	694	}
461		695
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	696	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	697	SvREFCNT_dec (req->sv2);
		698	SvREFCNT_dec (req->sv3);
		699	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		701
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470
471	Safefree (req);	702	free (req);
472	}	703	}
473		704
		705	static void
474	static void req_cancel_subs (aio_req grp)	706	req_cancel_subs (aio_req grp)
475	{	707	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	708	if (grp->type != EIO_GROUP)
479	return;	709	return;
480		710
481	SvREFCNT_dec (grp->fh2);	711	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	712	grp->sv2 = 0;
483		713
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	714	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	715	}
487		716
488	static void req_cancel (aio_req req)	717	static void ecb_cold
		718	create_respipe (void)
489	{	719	{
490	req->flags |= FLAG_CANCELLED;	720	if (s_epipe_renew (&respipe))
491		721	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	722	}
494		723
495	static int poll_cb ()	724	static void
		725	poll_wait (void)
496	{	726	{
497	dSP;	727	while (eio_nreqs ())
498	int count = 0;	728	{
499	int do_croak = 0;	729	int size;
500	aio_req req;
501		730
		731	X_LOCK (reslock);
		732	size = res_queue.size;
		733	X_UNLOCK (reslock);
		734
		735	if (size)
		736	return;
		737
		738	etp_maybe_start_thread ();
		739
		740	s_epipe_wait (&respipe);
		741	}
		742	}
		743
		744	static int
		745	poll_cb (void)
		746	{
502	for (;;)	747	for (;;)
503	{	748	{
504	LOCK (reslock);	749	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		750
507	if (req)	751	if (res > 0)
		752	croak (0);
		753
		754	if (!max_outstanding || max_outstanding > eio_nreqs ())
		755	return res;
		756
		757	poll_wait ();
		758	}
		759	}
		760
		761	static void ecb_cold
		762	reinit (void)
		763	{
		764	create_respipe ();
		765
		766	if (eio_init (want_poll, done_poll) < 0)
		767	croak ("IO::AIO: unable to initialise eio library");
		768	}
		769
		770	/*****************************************************************************/
		771
		772	#if !_POSIX_MAPPED_FILES
		773	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		774	# define munmap(addr,length) (errno = ENOSYS, -1)
		775	#endif
		776
		777	#if !_POSIX_MEMORY_PROTECTION
		778	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		779	# define PROT_NONE 0
		780	# define PROT_WRITE 0
		781	# define MAP_PRIVATE 0
		782	# define MAP_SHARED 0
		783	# define MAP_FIXED 0
		784	#endif
		785
		786	#define MMAP_MAGIC PERL_MAGIC_ext
		787
		788	static int ecb_cold
		789	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		790	{
		791	int old_errno = errno;
		792	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		793	errno = old_errno;
		794
		795	mg->mg_obj = 0; /* just in case */
		796
		797	SvREADONLY_off (sv);
		798
		799	if (SvPVX (sv) != mg->mg_ptr)
		800	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		801
		802	SvCUR_set (sv, 0);
		803	SvPVX (sv) = 0;
		804	SvOK_off (sv);
		805
		806	return 0;
		807	}
		808
		809	static MGVTBL mmap_vtbl = {
		810	0, 0, 0, 0, mmap_free
		811	};
		812
		813	/*****************************************************************************/
		814
		815	static SV *
		816	get_cb (SV *cb_sv)
		817	{
		818	SvGETMAGIC (cb_sv);
		819	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		820	}
		821
		822	static aio_req ecb_noinline
		823	dreq (SV *callback)
		824	{
		825	SV *cb_cv;
		826	aio_req req;
		827	int req_pri = next_pri;
		828	next_pri = EIO_PRI_DEFAULT;
		829
		830	cb_cv = get_cb (callback);
		831
		832	req = calloc (sizeof (*req), 1);
		833	if (!req)
		834	croak ("out of memory during eio_req allocation");
		835
		836	req->callback = SvREFCNT_inc (cb_cv);
		837	req->pri = req_pri;
		838
		839	return req;
		840	}
		841
		842	#define dREQ \
		843	aio_req req = dreq (callback); \
		844
		845	#define REQ_SEND \
		846	PUTBACK; \
		847	req_submit (req); \
		848	SPAGAIN; \
		849	\
		850	if (GIMME_V != G_VOID) \
		851	XPUSHs (req_sv (req, aio_req_stash));
		852
		853	ecb_inline void
		854	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		855	{
		856	if (expect_false (SvROK (path)))
		857	{
		858	SV *rv = SvRV (path);
		859	SV *wdob;
		860
		861	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508	{	862	{
509	if (!res_queue.size)	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
		865
		866	if (SvOK (wdob))
510	{	867	{
511	/* read any signals sent by the worker threads */	868	*wd = SvAIO_WD (wdob);
512	char buf [32];	869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}	870	}
		871	else
		872	*wd = EIO_INVALID_WD;
516	}	873	}
517		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{	875	{
529	req->fd = 1; /* mark request as delayed */	876	*wd = (aio_wd)(long)SvIVX (rv);
530	continue;	877	*wdsv = SvREFCNT_inc_NN (rv);
		878	*ptr = ".";
		879	return; /* path set to "." */
531	}	880	}
532	else	881	else
533	{	882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	883	}
554		884
555	return count;	885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
556	}	887	}
557		888
558	static void *aio_proc(void *arg);	889	static void ecb_noinline
559		890	req_set_path1 (aio_req req, SV *path)
560	static void start_thread (void)
561	{	891	{
562	worker *wrk = calloc (1, sizeof (worker));	892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		893	}
563		894
564	if (!wrk)	895	static void ecb_noinline
565	croak ("unable to allocate worker thread data");	896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		897	{
		898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566		899
567	sigset_t fullsigset, oldsigset;	900	switch (SvTYPE (rv))
568	pthread_attr_t attr;
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{	901	{
581	wrk->prev = &wrk_first;	902	case SVt_PVIO:
582	wrk->next = wrk_first.next;	903	case SVt_PVLV:
583	wrk_first.next->prev = wrk;	904	case SVt_PVGV:
584	wrk_first.next = wrk;	905	req->type = type_fh;
585	started++;	906	req->sv1 = newSVsv (fh_or_path);
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	break;
		909
		910	default:
		911	req->type = type_path;
		912	req_set_path1 (req, fh_or_path);
		913	break;
586	}	914	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	915	}
593		916
594	static void req_send (aio_req req)	917	XS(boot_IO__AIO) ecb_cold;
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598		918
599	++nreqs;	919	MODULE = IO::AIO PACKAGE = IO::AIO
600		920
601	LOCK (reqlock);	921	PROTOTYPES: ENABLE
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605		922
606	if (nreqs > max_outstanding)	923	BOOT:
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{	924	{
620	aio_req req;	925	static const struct {
		926	const char *name;
		927	IV iv;
		928	} *civ, const_iv[] = {
		929	# define const_niv(name, value) { # name, (IV) value },
		930	# define const_iv(name) { # name, (IV) name },
		931	# define const_eio(name) { # name, (IV) EIO_ ## name },
		932	const_iv (EXDEV)
		933	const_iv (ENOSYS)
		934	const_iv (O_RDONLY)
		935	const_iv (O_WRONLY)
		936	const_iv (O_RDWR)
		937	const_iv (O_CREAT)
		938	const_iv (O_TRUNC)
		939	const_iv (O_EXCL)
		940	const_iv (O_APPEND)
621		941
622	Newz (0, req, 1, aio_cb);	942	const_iv (O_ASYNC)
		943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
623		945
624	req->type = REQ_QUIT;	946	const_iv (O_CLOEXEC)
625	req->pri = PRI_MAX + PRI_BIAS;	947	const_iv (O_NOCTTY)
		948	const_iv (O_NOFOLLOW)
		949	const_iv (O_NONBLOCK)
		950	const_iv (O_EXEC)
		951	const_iv (O_SEARCH)
		952	const_iv (O_DIRECTORY)
		953	const_iv (O_DSYNC)
		954	const_iv (O_RSYNC)
		955	const_iv (O_SYNC)
		956	const_iv (O_TTY_INIT)
626		957
627	req_send (req);	958	const_iv (S_IFIFO)
628	}	959	const_iv (S_IFCHR)
		960	const_iv (S_IFBLK)
		961	const_iv (S_IFLNK)
		962	const_iv (S_IFREG)
		963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
629		967
630	static void min_parallel (int nthreads)	968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
631	{	969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
632	if (wanted < nthreads)	970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
633	wanted = nthreads;	971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
634	}	972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
635		974
636	static void max_parallel (int nthreads)	975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
637	{	976	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
638	int cur = started;	977	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		978	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		979	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
639		980
640	if (wanted > nthreads)	981	const_iv (ST_RDONLY)
641	wanted = nthreads;	982	const_iv (ST_NOSUID)
		983	const_iv (ST_NODEV)
		984	const_iv (ST_NOEXEC)
		985	const_iv (ST_SYNCHRONOUS)
		986	const_iv (ST_MANDLOCK)
		987	const_iv (ST_WRITE)
		988	const_iv (ST_APPEND)
		989	const_iv (ST_IMMUTABLE)
		990	const_iv (ST_NOATIME)
		991	const_iv (ST_NODIRATIME)
		992	const_iv (ST_RELATIME)
642		993
643	while (cur > wanted)	994	const_iv (PROT_NONE)
644	{	995	const_iv (PROT_EXEC)
645	end_thread ();	996	const_iv (PROT_READ)
646	cur--;	997	const_iv (PROT_WRITE)
647	}
648		998
649	while (started > wanted)	999	/*const_iv (MAP_FIXED)*/
650	{	1000	const_iv (MAP_PRIVATE)
651	poll_wait ();	1001	const_iv (MAP_SHARED)
652	poll_cb ();	1002	const_iv (MAP_ANONYMOUS)
653	}
654	}
655		1003
656	static void create_pipe ()	1004	/* linuxish */
657	{	1005	const_iv (MAP_HUGETLB)
658	if (pipe (respipe))	1006	const_iv (MAP_LOCKED)
659	croak ("unable to initialize result pipe");	1007	const_iv (MAP_NORESERVE)
		1008	const_iv (MAP_POPULATE)
		1009	const_iv (MAP_NONBLOCK)
660		1010
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1011	const_eio (SEEK_SET)
662	croak ("cannot set result pipe to nonblocking mode");	1012	const_eio (SEEK_CUR)
		1013	const_eio (SEEK_END)
663		1014
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	1015	const_eio (MCL_FUTURE)
665	croak ("cannot set result pipe to nonblocking mode");	1016	const_eio (MCL_CURRENT)
666	}
667		1017
668	/*****************************************************************************/	1018	const_eio (MS_ASYNC)
669	/* work around various missing functions */	1019	const_eio (MS_INVALIDATE)
		1020	const_eio (MS_SYNC)
670		1021
671	#if !HAVE_PREADWRITE	1022	const_eio (MT_MODIFY)
672	# define pread aio_pread
673	# define pwrite aio_pwrite
674		1023
675	/*	1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
676	* make our pread/pwrite safe against themselves, but not against	1025	const_eio (SYNC_FILE_RANGE_WRITE)
677	* normal read/write by using a mutex. slows down execution a lot,	1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
678	* but that's your problem, not mine.
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681		1027
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1028	const_eio (FALLOC_FL_KEEP_SIZE)
683	{
684	ssize_t res;
685	off_t ooffset;
686		1029
687	LOCK (preadwritelock);	1030	const_eio (READDIR_DENTS)
688	ooffset = lseek (fd, 0, SEEK_CUR);	1031	const_eio (READDIR_DIRS_FIRST)
689	lseek (fd, offset, SEEK_SET);	1032	const_eio (READDIR_STAT_ORDER)
690	res = read (fd, buf, count);	1033	const_eio (READDIR_FOUND_UNKNOWN)
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693		1034
694	return res;	1035	const_eio (DT_UNKNOWN)
695	}	1036	const_eio (DT_FIFO)
696		1037	const_eio (DT_CHR)
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1038	const_eio (DT_DIR)
698	{	1039	const_eio (DT_BLK)
699	ssize_t res;	1040	const_eio (DT_REG)
700	off_t ooffset;	1041	const_eio (DT_LNK)
701		1042	const_eio (DT_SOCK)
702	LOCK (preadwritelock);	1043	const_eio (DT_WHT)
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708
709	return res;
710	}
711	#endif
712
713	#if !HAVE_FDATASYNC
714	# define fdatasync fsync
715	#endif
716
717	#if !HAVE_READAHEAD
718	# define readahead aio_readahead
719
720	static ssize_t readahead (int fd, off_t offset, size_t count)
721	{
722	dBUF;
723
724	while (count > 0)
725	{
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727
728	pread (fd, aio_buf, len, offset);
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;
774
775	#if HAVE_SENDFILE
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778
779	# elif __freebsd
780	/*
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787
788	if (res < 0 && sbytes)
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}	1044	};
792		1045
793	# elif __hpux	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
794	res = sendfile (ofd, ifd, offset, count, 0, 0);	1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
795		1050
796	# elif __solaris	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
797	{	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
798	struct sendfilevec vec;
799	size_t sbytes;
800		1053
801	vec.sfv_fd = ifd;	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805		1055
806	res = sendfilev (ofd, &vec, 1, &sbytes);	1056	reinit ();
		1057	}
807		1058
808	if (res < 0 && sbytes)	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
		1064	max_poll_reqs (unsigned int nreqs)
		1065	PROTOTYPE: $
		1066	CODE:
		1067	eio_set_max_poll_reqs (nreqs);
		1068
		1069	void
		1070	max_poll_time (double nseconds)
		1071	PROTOTYPE: $
		1072	CODE:
		1073	eio_set_max_poll_time (nseconds);
		1074
		1075	void
		1076	min_parallel (unsigned int nthreads)
		1077	PROTOTYPE: $
		1078	CODE:
		1079	eio_set_min_parallel (nthreads);
		1080
		1081	void
		1082	max_parallel (unsigned int nthreads)
		1083	PROTOTYPE: $
		1084	CODE:
		1085	eio_set_max_parallel (nthreads);
		1086
		1087	void
		1088	max_idle (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_max_idle (nthreads);
		1092
		1093	void
		1094	idle_timeout (unsigned int seconds)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_idle_timeout (seconds);
		1098
		1099	void
		1100	max_outstanding (unsigned int maxreqs)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	max_outstanding = maxreqs;
		1104
		1105	void
		1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1107	PPCODE:
		1108	{
		1109	dREQ;
		1110
		1111	req->type = EIO_WD_OPEN;
		1112	req_set_path1 (req, pathname);
		1113
		1114	REQ_SEND;
		1115	}
		1116
		1117	void
		1118	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
		1123	req->type = EIO_OPEN;
		1124	req_set_path1 (req, pathname);
		1125	req->int1 = flags;
		1126	req->int2 = mode;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1133	ALIAS:
		1134	aio_fsync = EIO_FSYNC
		1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
		1137	PPCODE:
		1138	{
		1139	int fd = s_fileno_croak (fh, 0);
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (fh);
		1144	req->int1 = fd;
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int fd = s_fileno_croak (fh, 0);
		1154	dREQ;
		1155
		1156	req->type = EIO_SYNC_FILE_RANGE;
		1157	req->sv1 = newSVsv (fh);
		1158	req->int1 = fd;
		1159	req->offs = offset;
809	res = sbytes;	1160	req->size = nbytes;
810	}	1161	req->int2 = flags;
811		1162
812	# endif	1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_FALLOCATE;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->int2 = mode;
		1177	req->offs = offset;
		1178	req->size = len;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
		1184	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1185	PPCODE:
		1186	{
		1187	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1188	int fd = s_fileno_croak (fh, 0);
		1189	dREQ;
		1190
		1191	if (expect_false (close_fd < 0))
		1192	{
		1193	int pipefd [2];
		1194
		1195	if (
		1196	#ifdef _WIN32
		1197	_pipe (pipefd, 1, _O_BINARY) < 0
813	#else	1198	#else
814	res = -1;	1199	pipe (pipefd) < 0
815	errno = ENOSYS;	1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
816	#endif	1201	#endif
817		1202	|| close (pipefd [1]) < 0
818	if (res < 0
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820	#if __solaris
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
822	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828
829	res = 0;
830
831	while (count)
832	{
833	ssize_t cnt;
834
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837	if (cnt <= 0)
838	{	1203	)
839	if (cnt && !res) res = -1;	1204	abort (); /*D*/
840	break;
841	}
842		1205
843	cnt = write (ofd, aio_buf, cnt);	1206	close_fd = pipefd [0];
844
845	if (cnt <= 0)
846	{
847	if (cnt && !res) res = -1;
848	break;
849	}
850
851	offset += cnt;
852	res += cnt;
853	count -= cnt;
854	}
855	}
856
857	return res;
858	}
859
860	/* read a full directory */
861	static void scandir_ (aio_req req, worker *self)
862	{
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}	1207	}
914	}
915		1208
916	if (errno)	1209	req->type = EIO_DUP2;
917	res = -1;	1210	req->int1 = close_fd;
918		1211	req->sv2 = newSVsv (fh);
919	req->result = res;	1212	req->int2 = fd;
920	}
921		1213
922	/*****************************************************************************/	1214	REQ_SEND;
923
924	static void *aio_proc (void *thr_arg)
925	{
926	aio_req req;
927	int type;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}	1215	}
1015		1216
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}
1074
1075	#define dREQ \
1076	aio_req req; \
1077	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
1079	\
1080	if (SvOK (callback) && !SvROK (callback)) \
1081	croak ("callback must be undef or of reference type"); \
1082	\
1083	Newz (0, req, 1, aio_cb); \
1084	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \
1086	\
1087	req->callback = newSVsv (callback); \
1088	req->pri = req_pri
1089
1090	#define REQ_SEND \
1091	req_send (req); \
1092	\
1093	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095
1096	MODULE = IO::AIO PACKAGE = IO::AIO
1097
1098	PROTOTYPES: ENABLE
1099
1100	BOOT:
1101	{
1102	HV *stash = gv_stashpv ("IO::AIO", 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106
1107	create_pipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110
1111	void	1217	void
1112	min_parallel (nthreads)	1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	max_parallel (nthreads)
1118	int nthreads
1119	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	1219	PPCODE:
1126	RETVAL = max_outstanding;
1127	max_outstanding = nreqs;
1128
1129	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:
1137	{	1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
1138	dREQ;	1223	dREQ;
1139		1224
1140	req->type = REQ_OPEN;	1225	req->type = EIO_SEEK;
1141	req->data = newSVsv (pathname);	1226	req->sv1 = newSVsv (fh);
1142	req->dataptr = SvPVbyte_nolen (req->data);	1227	req->int1 = fd;
1143	req->fd = flags;	1228	req->offs = SvVAL64 (offset);
1144	req->mode = mode;	1229	req->int2 = whence;
1145		1230
1146	REQ_SEND;	1231	REQ_SEND;
1147	}	1232	}
1148		1233
1149	void	1234	void
1150	aio_close (fh,callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	1236	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC
1158	PPCODE:
1159	{
1160	dREQ;
1161
1162	req->type = ix;
1163	req->fh = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165
1166	REQ_SEND (req);
1167	}
1168
1169	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:
1178	aio_read = REQ_READ	1237	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1239	PPCODE:
1182	{	1240	{
1183	aio_req req;
1184	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
1186		1244	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1245
1190	if (dataoffset < 0)	1246	if (dataoffset < 0)
1191	dataoffset += svlen;	1247	dataoffset += svlen;
1192		1248
1193	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
1195		1251
1196	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
1197	{	1253	{
1198	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
1201	}	1257	}
1202	else	1258	else
1203	{	1259	{
1204	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	1263	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1264
1211	{	1265	{
1212	dREQ;	1266	dREQ;
1213		1267
1214	req->type = ix;	1268	req->type = ix;
1215	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1272	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
		1275	req->stroffset = dataoffset;
1222		1276
1223	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1224	{	1278	{
1225	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1280	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1281	}
1228		1282
1229	REQ_SEND;	1283	REQ_SEND;
1230	}	1284	}
1231	}	1285	}
1232		1286
1233	void	1287	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1235	SV * out_fh	1289	ALIAS:
1236	SV * in_fh	1290	aio_readlink = EIO_READLINK
1237	UV in_offset	1291	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1292	PPCODE:
1242	{	1293	{
		1294	dREQ;
		1295
		1296	req->type = ix;
		1297	req_set_path1 (req, pathname);
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
		1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1304	PPCODE:
		1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1308	dREQ;
1244		1309
1245	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1250	req->offset = in_offset;	1315	req->offs = in_offset;
1251	req->length = length;	1316	req->size = length;
1252		1317
1253	REQ_SEND;	1318	REQ_SEND;
1254	}	1319	}
1255		1320
1256	void	1321	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1323	PPCODE:
1264	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1326	dREQ;
1266		1327
1267	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1270	req->offset = offset;	1331	req->offs = offset;
1271	req->length = length;	1332	req->size = length;
1272		1333
1273	REQ_SEND;	1334	REQ_SEND;
1274	}	1335	}
1275		1336
1276	void	1337	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1339	ALIAS:
1281	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1343	PPCODE:
1284	{	1344	{
1285	dREQ;	1345	dREQ;
1286		1346
1287	New (0, req->statdata, 1, Stat_t);	1347	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293
1294	if (SvPOK (fh_or_path))
1295	{
1296	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);
1299	}
1300	else
1301	{
1302	req->type = REQ_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}
1306		1348
1307	REQ_SEND;	1349	REQ_SEND;
1308	}	1350	}
1309		1351
		1352	UV
		1353	major (UV dev)
		1354	ALIAS:
		1355	minor = 1
		1356	CODE:
		1357	RETVAL = ix ? major (dev) : minor (dev);
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	UV
		1362	makedev (UV maj, UV min)
		1363	CODE:
		1364	RETVAL = makedev (maj, min);
		1365	OUTPUT:
		1366	RETVAL
		1367
1310	void	1368	void
		1369	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1375	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1376	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1377
		1378	REQ_SEND;
		1379	}
		1380
		1381	void
		1382	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1388	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->int2 = mode;
		1400	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1412	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1413	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	dREQ;
		1423
		1424	req->type = EIO_READDIR;
		1425	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1426
		1427	if (flags & EIO_READDIR_DENTS)
		1428	req->int1 |= EIO_READDIR_CUSTOM2;
		1429
		1430	req_set_path1 (req, pathname);
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1437	PPCODE:
		1438	{
		1439	dREQ;
		1440
		1441	req->type = EIO_MKDIR;
		1442	req->int2 = mode;
		1443	req_set_path1 (req, pathname);
		1444
		1445	REQ_SEND;
		1446	}
		1447
		1448	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1450	ALIAS:
1315	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1318	PPCODE:	1454	PPCODE:
1319	{	1455	{
1320	dREQ;	1456	dREQ;
1321		1457
1322	req->type = ix;	1458	req->type = ix;
1323	req->data = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1460
1325
1326	REQ_SEND;	1461	REQ_SEND;
1327	}	1462	}
1328		1463
1329	void	1464	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1466	ALIAS:
1335	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1338	PPCODE:	1470	PPCODE:
1339	{	1471	{
		1472	eio_wd wd2 = 0;
1340	dREQ;	1473	dREQ;
1341		1474
1342	req->type = ix;	1475	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1345	req->data = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1346	req->dataptr = SvPVbyte_nolen (req->data);
1347		1479
1348	REQ_SEND;	1480	REQ_SEND;
1349	}	1481	}
1350		1482
1351	void	1483	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1485	PPCODE:
1356	{	1486	{
1357	dREQ;	1487	dREQ;
1358		1488
1359	req->type = REQ_BUSY;	1489	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1490	req->int2 = (mode_t)mode;
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1491	req->offs = dev;
1362		1492	req_set_path1 (req, pathname);
		1493
1363	REQ_SEND;	1494	REQ_SEND;
1364	}	1495	}
1365		1496
1366	void	1497	void
1367	aio_group (callback=&PL_sv_undef)	1498	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1368	SV * callback	1499	ALIAS:
1369	PROTOTYPE: ;$	1500	aio_mtouch = EIO_MTOUCH
		1501	aio_msync = EIO_MSYNC
1370	PPCODE:	1502	PPCODE:
1371	{	1503	{
		1504	STRLEN svlen;
		1505	char *svptr = SvPVbyte (data, svlen);
		1506	UV len = SvUV (length);
		1507
		1508	if (offset < 0)
		1509	offset += svlen;
		1510
		1511	if (offset < 0 || offset > svlen)
		1512	croak ("offset outside of scalar");
		1513
		1514	if (!SvOK (length) || len + offset > svlen)
		1515	len = svlen - offset;
		1516
		1517	{
		1518	dREQ;
		1519
		1520	req->type = ix;
		1521	req->sv2 = SvREFCNT_inc (data);
		1522	req->ptr2 = (char *)svptr + offset;
		1523	req->size = len;
		1524	req->int1 = flags;
		1525
		1526	REQ_SEND;
		1527	}
		1528	}
		1529
		1530	void
		1531	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1532	PPCODE:
		1533	{
		1534	STRLEN svlen;
		1535	char *svptr = SvPVbyte (data, svlen);
		1536	UV len = SvUV (length);
		1537
		1538	if (offset < 0)
		1539	offset += svlen;
		1540
		1541	if (offset < 0 || offset > svlen)
		1542	croak ("offset outside of scalar");
		1543
		1544	if (!SvOK (length) || len + offset > svlen)
		1545	len = svlen - offset;
		1546
		1547	{
		1548	dREQ;
		1549
		1550	req->type = EIO_MLOCK;
		1551	req->sv2 = SvREFCNT_inc (data);
		1552	req->ptr2 = (char *)svptr + offset;
		1553	req->size = len;
		1554
		1555	REQ_SEND;
		1556	}
		1557	}
		1558
		1559	void
		1560	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	dREQ;
		1564
		1565	req->type = EIO_MLOCKALL;
		1566	req->int1 = flags;
		1567
		1568	REQ_SEND;
		1569	}
		1570
		1571	void
		1572	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1573	PPCODE:
		1574	{
1372	dREQ;	1575	dREQ;
1373		1576
		1577	req->type = EIO_BUSY;
		1578	req->nv1 = delay < 0. ? 0. : delay;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_group (SV *callback=&PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	dREQ;
		1588
1374	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
		1590
1375	req_send (req);	1591	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1378	}	1593	}
1379		1594
1380	void	1595	void
1381	aio_nop (callback=&PL_sv_undef)	1596	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1597	ALIAS:
		1598	aio_nop = EIO_NOP
		1599	aio_sync = EIO_SYNC
1383	PPCODE:	1600	PPCODE:
1384	{	1601	{
1385	dREQ;	1602	dREQ;
1386		1603
1387	req->type = REQ_NOP;	1604	req->type = ix;
1388		1605
1389	REQ_SEND;	1606	REQ_SEND;
1390	}	1607	}
1391		1608
1392	void	1609	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1610	aioreq_pri (int pri = 0)
1394	CODE:	1611	CODE:
		1612	RETVAL = next_pri;
		1613	if (items > 0)
		1614	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1615	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1616	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1617	next_pri = pri;
		1618	}
		1619	OUTPUT:
		1620	RETVAL
1398		1621
1399	void	1622	void
1400	aioreq_nice (int nice = 0)	1623	aioreq_nice (int nice = 0)
1401	CODE:	1624	CODE:
1402	nice = next_pri - nice;	1625	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1626	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1627	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1628	next_pri = nice;
1406		1629
1407	void	1630	void
1408	flush ()	1631	flush ()
1409	PROTOTYPE:
1410	CODE:	1632	CODE:
1411	while (nreqs)	1633	while (eio_nreqs ())
1412	{	1634	{
1413	poll_wait ();	1635	poll_wait ();
1414	poll_cb ();	1636	poll_cb ();
1415	}	1637	}
1416		1638
1417	void	1639	int
1418	poll()	1640	poll ()
1419	PROTOTYPE:
1420	CODE:	1641	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1642	poll_wait ();
1424	poll_cb ();	1643	RETVAL = poll_cb ();
1425	}
1426
1427	int
1428	poll_fileno()
1429	PROTOTYPE:
1430	CODE:
1431	RETVAL = respipe [0];
1432	OUTPUT:	1644	OUTPUT:
1433	RETVAL	1645	RETVAL
1434		1646
1435	int	1647	int
		1648	poll_fileno ()
		1649	CODE:
		1650	RETVAL = s_epipe_fd (&respipe);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	int
1436	poll_cb(...)	1655	poll_cb (...)
1437	PROTOTYPE:	1656	PROTOTYPE:
1438	CODE:	1657	CODE:
1439	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1440	OUTPUT:	1659	OUTPUT:
1441	RETVAL	1660	RETVAL
1442		1661
1443	void	1662	void
1444	poll_wait()	1663	poll_wait ()
1445	PROTOTYPE:
1446	CODE:	1664	CODE:
1447	if (nreqs)
1448	poll_wait ();	1665	poll_wait ();
1449		1666
1450	int	1667	int
1451	nreqs()	1668	nreqs ()
1452	PROTOTYPE:
1453	CODE:	1669	CODE:
1454	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1455	OUTPUT:	1671	OUTPUT:
1456	RETVAL	1672	RETVAL
1457		1673
		1674	int
		1675	nready ()
		1676	CODE:
		1677	RETVAL = eio_nready ();
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	int
		1682	npending ()
		1683	CODE:
		1684	RETVAL = eio_npending ();
		1685	OUTPUT:
		1686	RETVAL
		1687
		1688	int
		1689	nthreads ()
		1690	CODE:
		1691	RETVAL = eio_nthreads ();
		1692	OUTPUT:
		1693	RETVAL
		1694
		1695	int
		1696	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1697	CODE:
		1698	RETVAL = posix_fadvise (fh, offset, length, advice);
		1699	OUTPUT:
		1700	RETVAL
		1701
		1702	IV
		1703	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1704	CODE:
		1705	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	void
		1710	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1711	PPCODE:
		1712	sv_unmagic (scalar, MMAP_MAGIC);
		1713	{
		1714	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1715	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1716	if (addr == (void *)-1)
		1717	XSRETURN_NO;
		1718
		1719	sv_force_normal (scalar);
		1720
		1721	/* we store the length in mg_obj, as namlen is I32 :/ */
		1722	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1723	->mg_obj = (SV *)length;
		1724
		1725	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1726
		1727	if (!(prot & PROT_WRITE))
		1728	SvREADONLY_on (scalar);
		1729
		1730	if (SvLEN (scalar))
		1731	Safefree (SvPVX (scalar));
		1732
		1733	SvPVX (scalar) = (char *)addr;
		1734	SvCUR_set (scalar, length);
		1735	SvLEN_set (scalar, 0);
		1736	SvPOK_only (scalar);
		1737
		1738	XSRETURN_YES;
		1739	}
		1740
		1741	void
		1742	munmap (SV *scalar)
		1743	CODE:
		1744	sv_unmagic (scalar, MMAP_MAGIC);
		1745
		1746	int
		1747	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1748	ALIAS:
		1749	mprotect = 1
		1750	CODE:
		1751	{
		1752	STRLEN svlen;
		1753	void *addr = SvPVbyte (scalar, svlen);
		1754	size_t len = SvUV (length);
		1755
		1756	if (offset < 0)
		1757	offset += svlen;
		1758
		1759	if (offset < 0 || offset > svlen)
		1760	croak ("offset outside of scalar");
		1761
		1762	if (!SvOK (length) || len + offset > svlen)
		1763	len = svlen - offset;
		1764
		1765	addr = (void *)(((intptr_t)addr) + offset);
		1766	eio_page_align (&addr, &len);
		1767
		1768	switch (ix)
		1769	{
		1770	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1771	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1772	}
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1779	CODE:
		1780	{
		1781	STRLEN svlen;
		1782	void *addr = SvPVbyte (scalar, svlen);
		1783	size_t len = SvUV (length);
		1784
		1785	if (offset < 0)
		1786	offset += svlen;
		1787
		1788	if (offset < 0 || offset > svlen)
		1789	croak ("offset outside of scalar");
		1790
		1791	if (!SvOK (length) || len + offset > svlen)
		1792	len = svlen - offset;
		1793
		1794	addr = (void *)(((intptr_t)addr) + offset);
		1795	eio_page_align (&addr, &len);
		1796	#if _POSIX_MEMLOCK_RANGE
		1797	RETVAL = munlock (addr, len);
		1798	#else
		1799	RETVAL = ((errno = ENOSYS), -1);
		1800	#endif
		1801	}
		1802	OUTPUT:
		1803	RETVAL
		1804
		1805	int
		1806	munlockall ()
		1807	CODE:
		1808	#if _POSIX_MEMLOCK
		1809	munlockall ();
		1810	#else
		1811	RETVAL = -1;
		1812	errno = ENOSYS;
		1813	#endif
		1814	OUTPUT:
		1815	RETVAL
		1816
		1817	void _on_next_submit (SV *cb)
		1818	CODE:
		1819	SvREFCNT_dec (on_next_submit);
		1820	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1821
1458	PROTOTYPES: DISABLE	1822	PROTOTYPES: DISABLE
		1823
		1824	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1825
		1826	BOOT:
		1827	{
		1828	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1829	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1830	}
		1831
		1832	void
		1833	DESTROY (SV *self)
		1834	CODE:
		1835	{
		1836	aio_wd wd = SvAIO_WD (self);
		1837	#if HAVE_AT
		1838	{
		1839	SV *callback = &PL_sv_undef;
		1840	dREQ; /* clobbers next_pri :/ */
		1841	next_pri = req->pri; /* restore next_pri */
		1842	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1843	req->type = EIO_WD_CLOSE;
		1844	req->wd = wd;
		1845	REQ_SEND;
		1846	}
		1847	#else
		1848	eio_wd_close_sync (wd);
		1849	#endif
		1850	}
1459		1851
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1853
1462	void	1854	void
1463	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1464	CODE:	1856	CODE:
1465	req_cancel (req);	1857	eio_cancel (req);
1466		1858
1467	void	1859	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1860	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1861	PPCODE:
		1862	{
		1863	if (GIMME_V != G_VOID)
		1864	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1865
		1866	if (items > 1)
		1867	{
		1868	SV *cb_cv =get_cb (callback);
		1869
1470	SvREFCNT_dec (req->callback);	1870	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1871	req->callback = SvREFCNT_inc (cb_cv);
		1872	}
		1873	}
1472		1874
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1876
1475	void	1877	void
1476	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1477	PPCODE:	1879	PPCODE:
1478	{	1880	{
1479	int i;	1881	int i;
1480	aio_req req;
1481		1882
1482	if (grp->fd == 2)	1883	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1884	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1885
1485	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1486	{	1887	{
		1888	aio_req req;
		1889
1487	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1892
1490	req = SvAIO_REQ (ST (i));	1893	req = SvAIO_REQ (ST (i));
1491		1894
1492	if (req)	1895	if (req)
1493	{	1896	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1897	}
1506	}	1898	}
1507		1899
1508	void	1900	void
1509	cancel_subs (aio_req_ornot req)	1901	cancel_subs (aio_req_ornot req)
…		…
1513	void	1905	void
1514	result (aio_req grp, ...)	1906	result (aio_req grp, ...)
1515	CODE:	1907	CODE:
1516	{	1908	{
1517	int i;	1909	int i;
		1910	AV *av;
		1911
		1912	grp->errorno = errno;
		1913
1518	AV *av = newAV ();	1914	av = newAV ();
		1915	av_extend (av, items - 1);
1519		1916
1520	for (i = 1; i < items; ++i )	1917	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1918	av_push (av, newSVsv (ST (i)));
1522		1919
1523	SvREFCNT_dec (grp->data);	1920	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1921	grp->sv1 = (SV *)av;
1525	}	1922	}
		1923
		1924	void
		1925	errno (aio_req grp, int errorno = errno)
		1926	CODE:
		1927	grp->errorno = errorno;
1526		1928
1527	void	1929	void
1528	limit (aio_req grp, int limit)	1930	limit (aio_req grp, int limit)
1529	CODE:	1931	CODE:
1530	grp->fd2 = limit;	1932	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1933
1533	void	1934	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1935	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1936	CODE:
1536	{	1937	{
1537	SvREFCNT_dec (grp->fh2);	1938	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1939	grp->sv2 = newSVsv (callback);
		1940	grp->feed = aio_grp_feed;
1539		1941
1540	if (grp->fd2 <= 0)	1942	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1943	grp->int2 = 2;
1542		1944
1543	aio_grp_feed (grp);	1945	eio_grp_limit (grp, grp->int2);
1544	}	1946	}
1545		1947

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