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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 1.207 by root, Fri Dec 30 07:40:54 2011 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
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# 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	#else
		68
40	# include <sys/socket.h>	69	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
43	# else	295	# else
44	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	297	# endif
46	#endif	298	#endif
47		299	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif	301	#endif
52		302	#ifndef MAP_LOCKED
53	#ifndef PTHREAD_STACK_MIN	303	# define MAP_LOCKED 0
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif	304	#endif
57		305	#ifndef MAP_NORESERVE
58	#if __ia64	306	# define MAP_NORESERVE 0
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif	307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
65		314
66	/* buffer size for various temporary buffers */	315	#ifndef makedev
67	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
68		324
69	#define dBUF \	325	#ifndef PAGESIZE
70	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
71	LOCK (wrklock); \	327	#endif
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76		328
77	enum {	329	enum {
78	REQ_QUIT,	330	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	};	331	};
90		332
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;	333	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
125		336
126	enum {	337	static SV *on_next_submit;
127	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	339	static int max_outstanding;
129		340
130	DEFAULT_PRI = 0,	341	static s_epipe respipe;
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		342
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);	343	static void req_destroy (aio_req req);
252	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
253		345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
		359
254	/* must be called at most once */	360	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
256	{	363	{
257	if (!req->self)	364	if (!req->self)
258	{	365	{
259	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
261	}	368	}
262		369
263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
264	}	371	}
265		372
266	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
267	{	381	{
268	MAGIC *mg;	382	MAGIC *mg;
269		383
270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		386	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		387	&& SvSTASH (SvRV (sv)) != aio_req_stash
		388	&& !sv_derived_from (sv, "IO::AIO::REQ")))
271	croak ("object of class " AIO_REQ_KLASS " expected");	389	croak ("object of class IO::AIO::REQ expected");
272		390
273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	391	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
274		392
275	return mg ? (aio_req)mg->mg_ptr : 0;	393	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	394	}
277		395
		396	static aio_wd
		397	SvAIO_WD (SV *sv)
		398	{
		399	if (!SvROK (sv)
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		401	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		402	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		403
		404	return (aio_wd)(long)SvIVX (SvRV (sv));
		405	}
		406
		407	static void
278	static void aio_grp_feed (aio_req grp)	408	aio_grp_feed (aio_req grp)
279	{	409	{
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	410	if (grp->sv2 && SvOK (grp->sv2))
281	{	411	{
282	int old_len = grp->length;
283
284	if (grp->fh2 && SvOK (grp->fh2))
285	{
286	dSP;	412	dSP;
287		413
288	ENTER;	414	ENTER;
289	SAVETMPS;	415	SAVETMPS;
290	PUSHMARK (SP);	416	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	417	XPUSHs (req_sv (grp, aio_grp_stash));
292	PUTBACK;	418	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	419	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	420	SPAGAIN;
295	FREETMPS;	421	FREETMPS;
296	LEAVE;	422	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	}	423	}
307	}	424	}
308		425
309	static void aio_grp_dec (aio_req grp)	426	static void
		427	req_submit (eio_req *req)
310	{	428	{
311	--grp->length;	429	eio_submit (req);
312		430
313	/* call feeder, if applicable */	431	if (expect_false (on_next_submit))
314	aio_grp_feed (grp);
315
316	/* finish, if done */
317	if (!grp->length && grp->fd)
318	{	432	{
319	req_invoke (grp);	433	dSP;
320	req_free (grp);	434	SV *cb = sv_2mortal (on_next_submit);
		435
		436	on_next_submit = 0;
		437
		438	PUSHMARK (SP);
		439	PUTBACK;
		440	call_sv (cb, G_DISCARD | G_EVAL);
321	}	441	}
322	}	442	}
323		443
324	static void poll_wait ()	444	static int
		445	req_invoke (eio_req *req)
325	{	446	{
326	fd_set rfd;	447	if (req->flags & FLAG_SV2_RO_OFF)
		448	SvREADONLY_off (req->sv2);
327		449
328	while (nreqs)	450	if (!EIO_CANCELLED (req) && req->callback)
329	{	451	{
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;	452	dSP;
352		453	static SV *sv_result_cache; /* caches the result integer SV */
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	SV *sv_result;
354	{
355	errno = req->errorno;
356		455
357	ENTER;	456	ENTER;
358	SAVETMPS;	457	SAVETMPS;
359	PUSHMARK (SP);	458	PUSHMARK (SP);
360	EXTEND (SP, 1);	459	EXTEND (SP, 1);
361		460
		461	/* do not recreate the result IV from scratch each time */
		462	if (expect_true (sv_result_cache))
		463	{
		464	sv_result = sv_result_cache; sv_result_cache = 0;
		465	SvIV_set (sv_result, req->result);
		466	SvIOK_only (sv_result);
		467	}
		468	else
		469	{
		470	sv_result = newSViv (req->result);
		471	SvREADONLY_on (sv_result);
		472	}
		473
362	switch (req->type)	474	switch (req->type)
363	{	475	{
		476	case EIO_WD_OPEN:
		477	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		478	break;
		479
364	case REQ_READDIR:	480	case EIO_READDIR:
365	{	481	{
366	SV *rv = &PL_sv_undef;	482	SV *rv = &PL_sv_undef;
367		483
368	if (req->result >= 0)	484	if (req->result >= 0)
369	{	485	{
370	int i;	486	int i;
371	char *buf = req->data2ptr;	487	char *names = (char *)req->ptr2;
		488	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
372	AV *av = newAV ();	489	AV *av = newAV ();
373		490
374	av_extend (av, req->result - 1);	491	av_extend (av, req->result - 1);
375		492
376	for (i = 0; i < req->result; ++i)	493	for (i = 0; i < req->result; ++i)
377	{	494	{
378	SV *sv = newSVpv (buf, 0);	495	if (req->int1 & EIO_READDIR_DENTS)
		496	{
		497	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
379		498
		499	if (req->int1 & EIO_READDIR_CUSTOM2)
		500	{
		501	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		502	AV *avent = newAV ();
		503
		504	av_extend (avent, 2);
		505
		506	if (!sv_type [ent->type])
		507	{
		508	sv_type [ent->type] = newSViv (ent->type);
		509	SvREADONLY_on (sv_type [ent->type]);
		510	}
		511
		512	av_store (avent, 0, namesv);
		513	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		514	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		515
		516	av_store (av, i, newRV_noinc ((SV *)avent));
		517	}
		518	else
380	av_store (av, i, sv);	519	av_store (av, i, namesv);
		520
		521	++ent;
		522	}
		523	else
		524	{
		525	SV *name = newSVpv (names, 0);
		526	av_store (av, i, name);
381	buf += SvCUR (sv) + 1;	527	names += SvCUR (name) + 1;
		528	}
382	}	529	}
383		530
384	rv = sv_2mortal (newRV_noinc ((SV *)av));	531	rv = sv_2mortal (newRV_noinc ((SV *)av));
385	}	532	}
386		533
387	PUSHs (rv);	534	PUSHs (rv);
		535
		536	if (req->int1 & EIO_READDIR_CUSTOM1)
		537	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
388	}	538	}
389	break;	539	break;
390		540
391	case REQ_OPEN:	541	case EIO_OPEN:
392	{	542	{
393	/* convert fd to fh */	543	/* convert fd to fh */
394	SV *fh;	544	SV *fh = &PL_sv_undef;
395		545
396	PUSHs (sv_2mortal (newSViv (req->result)));	546	if (req->result >= 0)
397	PUTBACK;	547	{
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	548	GV *gv = (GV *)sv_newmortal ();
399	SPAGAIN;	549	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		550	char sym [64];
		551	int symlen;
		552
		553	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		554	gv_init (gv, aio_stash, sym, symlen, 0);
400		555
401	fh = SvREFCNT_inc (POPs);	556	symlen = snprintf (
		557	sym,
		558	sizeof (sym),
		559	"%s&=%d",
		560	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		561	(int)req->result
		562	);
402		563
		564	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		565	fh = (SV *)gv;
		566	}
		567
403	PUSHMARK (SP);	568	PUSHs (fh);
404	XPUSHs (sv_2mortal (fh));
405	}	569	}
406	break;	570	break;
407		571
		572	case EIO_STATVFS:
		573	case EIO_FSTATVFS:
		574	{
		575	SV *rv = &PL_sv_undef;
		576
		577	#ifndef _WIN32
		578	if (req->result >= 0)
		579	{
		580	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		581	HV *hv = newHV ();
		582
		583	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		584
		585	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		586	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		587	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		588	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		589	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		590	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		591	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		592	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		593	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		594	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		595	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		596	}
		597	#endif
		598
		599	PUSHs (rv);
		600	}
		601
		602	break;
		603
408	case REQ_GROUP:	604	case EIO_GROUP:
409	req->fd = 2; /* mark group as finished */	605	req->int1 = 2; /* mark group as finished */
410		606
411	if (req->data)	607	if (req->sv1)
412	{	608	{
413	int i;	609	int i;
414	AV *av = (AV *)req->data;	610	AV *av = (AV *)req->sv1;
415		611
416	EXTEND (SP, AvFILL (av) + 1);	612	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	613	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	614	PUSHs (*av_fetch (av, i, 0));
419	}	615	}
420	break;	616	break;
421		617
422	case REQ_NOP:	618	case EIO_NOP:
423	case REQ_BUSY:	619	case EIO_BUSY:
424	break;	620	break;
425		621
		622	case EIO_READLINK:
		623	case EIO_REALPATH:
		624	if (req->result > 0)
		625	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		626	break;
		627
		628	case EIO_STAT:
		629	case EIO_LSTAT:
		630	case EIO_FSTAT:
		631	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		632
		633	if (!(PL_laststatval = req->result))
		634	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		635	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		636
		637	PUSHs (sv_result);
		638	break;
		639
		640	case EIO_READ:
		641	{
		642	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		643	*SvEND (req->sv2) = 0;
		644	SvPOK_only (req->sv2);
		645	SvSETMAGIC (req->sv2);
		646	PUSHs (sv_result);
		647	}
		648	break;
		649
		650	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		651	if (req->result > 0)
		652	SvIV_set (sv_result, 0);
		653	/* FALLTHROUGH */
		654
426	default:	655	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	656	PUSHs (sv_result);
428	break;	657	break;
429	}	658	}
430		659
		660	errno = req->errorno;
431		661
432	PUTBACK;	662	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	663	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
434	SPAGAIN;	664	SPAGAIN;
		665
		666	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		667	SvREFCNT_dec (sv_result);
		668	else
		669	sv_result_cache = sv_result;
435		670
436	FREETMPS;	671	FREETMPS;
437	LEAVE;	672	LEAVE;
		673
		674	PUTBACK;
438	}	675	}
439		676
440	if (req->grp)	677	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	}	678	}
460		679
461	static void req_free (aio_req req)	680	static void
		681	req_destroy (aio_req req)
462	{	682	{
463	if (req->self)	683	if (req->self)
464	{	684	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	685	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	686	SvREFCNT_dec (req->self);
467	}	687	}
468		688
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	689	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	690	SvREFCNT_dec (req->sv2);
		691	SvREFCNT_dec (req->sv3);
		692	SvREFCNT_dec (req->sv4);
472	SvREFCNT_dec (req->callback);	693	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474		694
475	if (req->type == REQ_READDIR)
476	free (req->data2ptr);
477
478	Safefree (req);	695	free (req);
479	}	696	}
480		697
		698	static void
481	static void req_cancel_subs (aio_req grp)	699	req_cancel_subs (aio_req grp)
482	{	700	{
483	aio_req sub;
484
485	if (grp->type != REQ_GROUP)	701	if (grp->type != EIO_GROUP)
486	return;	702	return;
487		703
488	SvREFCNT_dec (grp->fh2);	704	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	705	grp->sv2 = 0;
490		706
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	707	eio_grp_cancel (grp);
492	req_cancel (sub);
493	}	708	}
494		709
495	static void req_cancel (aio_req req)	710	static void ecb_cold
		711	create_respipe (void)
496	{	712	{
497	req->flags |= FLAG_CANCELLED;	713	if (s_epipe_renew (&respipe))
498		714	croak ("IO::AIO: unable to initialize result pipe");
499	req_cancel_subs (req);
500	}	715	}
501		716
502	static int poll_cb (int max)	717	static void
		718	poll_wait (void)
503	{	719	{
504	dSP;	720	while (eio_nreqs ())
505	int count = 0;	721	{
506	int do_croak = 0;	722	int size;
507	aio_req req;
508		723
		724	X_LOCK (reslock);
		725	size = res_queue.size;
		726	X_UNLOCK (reslock);
		727
		728	if (size)
		729	return;
		730
		731	etp_maybe_start_thread ();
		732
		733	s_epipe_wait (&respipe);
		734	}
		735	}
		736
		737	static int
		738	poll_cb (void)
		739	{
509	for (;;)	740	for (;;)
510	{	741	{
511	while (max <= 0 || count < max)	742	int res = eio_poll ();
		743
		744	if (res > 0)
		745	croak (0);
		746
		747	if (!max_outstanding || max_outstanding > eio_nreqs ())
		748	return res;
		749
		750	poll_wait ();
		751	}
		752	}
		753
		754	static void ecb_cold
		755	reinit (void)
		756	{
		757	create_respipe ();
		758
		759	if (eio_init (want_poll, done_poll) < 0)
		760	croak ("IO::AIO: unable to initialise eio library");
		761	}
		762
		763	/*****************************************************************************/
		764
		765	#if !_POSIX_MAPPED_FILES
		766	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		767	# define munmap(addr,length) (errno = ENOSYS, -1)
		768	#endif
		769
		770	#if !_POSIX_MEMORY_PROTECTION
		771	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		772	# define PROT_NONE 0
		773	# define PROT_WRITE 0
		774	# define MAP_PRIVATE 0
		775	# define MAP_SHARED 0
		776	# define MAP_FIXED 0
		777	#endif
		778
		779	#define MMAP_MAGIC PERL_MAGIC_ext
		780
		781	static int ecb_cold
		782	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	int old_errno = errno;
		785	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		786	errno = old_errno;
		787
		788	mg->mg_obj = 0; /* just in case */
		789
		790	SvREADONLY_off (sv);
		791
		792	if (SvPVX (sv) != mg->mg_ptr)
		793	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		794
		795	SvCUR_set (sv, 0);
		796	SvPVX (sv) = 0;
		797	SvOK_off (sv);
		798
		799	return 0;
		800	}
		801
		802	static MGVTBL mmap_vtbl = {
		803	0, 0, 0, 0, mmap_free
		804	};
		805
		806	/*****************************************************************************/
		807
		808	static SV *
		809	get_cb (SV *cb_sv)
		810	{
		811	SvGETMAGIC (cb_sv);
		812	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		813	}
		814
		815	static aio_req ecb_noinline
		816	dreq (SV *callback)
		817	{
		818	SV *cb_cv;
		819	aio_req req;
		820	int req_pri = next_pri;
		821	next_pri = EIO_PRI_DEFAULT;
		822
		823	cb_cv = get_cb (callback);
		824
		825	req = calloc (sizeof (*req), 1);
		826	if (!req)
		827	croak ("out of memory during eio_req allocation");
		828
		829	req->callback = SvREFCNT_inc (cb_cv);
		830	req->pri = req_pri;
		831
		832	return req;
		833	}
		834
		835	#define dREQ \
		836	aio_req req = dreq (callback); \
		837
		838	#define REQ_SEND \
		839	PUTBACK; \
		840	req_submit (req); \
		841	SPAGAIN; \
		842	\
		843	if (GIMME_V != G_VOID) \
		844	XPUSHs (req_sv (req, aio_req_stash));
		845
		846	ecb_inline void
		847	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		848	{
		849	if (expect_false (SvROK (path)))
		850	{
		851	SV *rv = SvRV (path);
		852	SV *wdob;
		853
		854	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
512	{	855	{
513	LOCK (reslock);	856	path = AvARRAY (rv)[1];
514	req = reqq_shift (&res_queue);	857	wdob = AvARRAY (rv)[0];
515		858
516	if (req)	859	if (SvOK (wdob))
517	{	860	{
518	if (!res_queue.size)	861	*wd = SvAIO_WD (wdob);
519	{	862	*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	}	863	}
541	else	864	else
542	{	865	*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	}	866	}
		867	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		868	{
		869	*wd = (aio_wd)(long)SvIVX (rv);
		870	*wdsv = SvREFCNT_inc_NN (rv);
		871	*ptr = ".";
		872	return; /* path set to "." */
		873	}
		874	else
		875	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		876	}
563		877
564	if (nreqs <= max_outstanding)	878	*pathsv = newSVsv (path);
		879	*ptr = SvPVbyte_nolen (*pathsv);
		880	}
		881
		882	static void ecb_noinline
		883	req_set_path1 (aio_req req, SV *path)
		884	{
		885	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		886	}
		887
		888	static void ecb_noinline
		889	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		890	{
		891	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		892
		893	switch (SvTYPE (rv))
		894	{
		895	case SVt_PVIO:
		896	case SVt_PVLV:
		897	case SVt_PVGV:
		898	req->type = type_fh;
		899	req->sv1 = newSVsv (fh_or_path);
		900	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
565	break;	901	break;
566		902
567	poll_wait ();	903	default:
568		904	req->type = type_path;
569	max = 0;	905	req_set_path1 (req, fh_or_path);
		906	break;
570	}	907	}
571
572	return count;
573	}	908	}
574		909
575	static void *aio_proc(void *arg);	910	XS(boot_IO__AIO) ecb_cold;
576		911
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	912	MODULE = IO::AIO PACKAGE = IO::AIO
1103		913
1104	PROTOTYPES: ENABLE	914	PROTOTYPES: ENABLE
1105		915
1106	BOOT:	916	BOOT:
1107	{	917	{
		918	static const struct {
		919	const char *name;
		920	IV iv;
		921	} *civ, const_iv[] = {
		922	# define const_niv(name, value) { # name, (IV) value },
		923	# define const_iv(name) { # name, (IV) name },
		924	# define const_eio(name) { # name, (IV) EIO_ ## name },
		925	const_iv (EXDEV)
		926	const_iv (ENOSYS)
		927	const_iv (O_RDONLY)
		928	const_iv (O_WRONLY)
		929	const_iv (O_RDWR)
		930	const_iv (O_CREAT)
		931	const_iv (O_TRUNC)
		932	const_iv (O_EXCL)
		933	const_iv (O_APPEND)
		934
		935	const_iv (O_ASYNC)
		936	const_iv (O_DIRECT)
		937	const_iv (O_NOATIME)
		938
		939	const_iv (O_CLOEXEC)
		940	const_iv (O_NOCTTY)
		941	const_iv (O_NOFOLLOW)
		942	const_iv (O_NONBLOCK)
		943	const_iv (O_EXEC)
		944	const_iv (O_SEARCH)
		945	const_iv (O_DIRECTORY)
		946	const_iv (O_DSYNC)
		947	const_iv (O_RSYNC)
		948	const_iv (O_SYNC)
		949	const_iv (O_TTY_INIT)
		950
		951	const_iv (S_IFIFO)
		952	const_iv (S_IFCHR)
		953	const_iv (S_IFBLK)
		954	const_iv (S_IFLNK)
		955	const_iv (S_IFREG)
		956	const_iv (S_IFDIR)
		957	const_iv (S_IFWHT)
		958	const_iv (S_IFSOCK)
		959	const_iv (S_IFMT)
		960
		961	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		962	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		963	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		964	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		965	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		966	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		967
		968	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		969	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		970	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		971	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		972	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		973
		974	const_iv (ST_RDONLY)
		975	const_iv (ST_NOSUID)
		976	const_iv (ST_NODEV)
		977	const_iv (ST_NOEXEC)
		978	const_iv (ST_SYNCHRONOUS)
		979	const_iv (ST_MANDLOCK)
		980	const_iv (ST_WRITE)
		981	const_iv (ST_APPEND)
		982	const_iv (ST_IMMUTABLE)
		983	const_iv (ST_NOATIME)
		984	const_iv (ST_NODIRATIME)
		985	const_iv (ST_RELATIME)
		986
		987	const_iv (PROT_NONE)
		988	const_iv (PROT_EXEC)
		989	const_iv (PROT_READ)
		990	const_iv (PROT_WRITE)
		991
		992	/*const_iv (MAP_FIXED)*/
		993	const_iv (MAP_PRIVATE)
		994	const_iv (MAP_SHARED)
		995	const_iv (MAP_ANONYMOUS)
		996
		997	/* linuxish */
		998	const_iv (MAP_HUGETLB)
		999	const_iv (MAP_LOCKED)
		1000	const_iv (MAP_NORESERVE)
		1001	const_iv (MAP_POPULATE)
		1002	const_iv (MAP_NONBLOCK)
		1003
		1004	const_eio (MCL_FUTURE)
		1005	const_eio (MCL_CURRENT)
		1006
		1007	const_eio (MS_ASYNC)
		1008	const_eio (MS_INVALIDATE)
		1009	const_eio (MS_SYNC)
		1010
		1011	const_eio (MT_MODIFY)
		1012
		1013	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1014	const_eio (SYNC_FILE_RANGE_WRITE)
		1015	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1016
		1017	const_eio (FALLOC_FL_KEEP_SIZE)
		1018
		1019	const_eio (READDIR_DENTS)
		1020	const_eio (READDIR_DIRS_FIRST)
		1021	const_eio (READDIR_STAT_ORDER)
		1022	const_eio (READDIR_FOUND_UNKNOWN)
		1023
		1024	const_eio (DT_UNKNOWN)
		1025	const_eio (DT_FIFO)
		1026	const_eio (DT_CHR)
		1027	const_eio (DT_DIR)
		1028	const_eio (DT_BLK)
		1029	const_eio (DT_REG)
		1030	const_eio (DT_LNK)
		1031	const_eio (DT_SOCK)
		1032	const_eio (DT_WHT)
		1033	};
		1034
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	1035	aio_stash = gv_stashpv ("IO::AIO" , 1);
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1036	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1037	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1038	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1112		1039
1113	create_pipe ();	1040	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1041	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1115	}
1116		1042
		1043	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1044
		1045	reinit ();
		1046	}
		1047
1117	void	1048	void
1118	min_parallel (int nthreads)	1049	reinit ()
1119	PROTOTYPE: $	1050	PROTOTYPE:
1120		1051
1121	void	1052	void
1122	max_parallel (int nthreads)	1053	max_poll_reqs (unsigned int nreqs)
1123	PROTOTYPE: $
1124
1125	int
1126	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	1054	PROTOTYPE: $
1128	CODE:	1055	CODE:
1129	RETVAL = max_outstanding;	1056	eio_set_max_poll_reqs (nreqs);
		1057
		1058	void
		1059	max_poll_time (double nseconds)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_poll_time (nseconds);
		1063
		1064	void
		1065	min_parallel (unsigned int nthreads)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_min_parallel (nthreads);
		1069
		1070	void
		1071	max_parallel (unsigned int nthreads)
		1072	PROTOTYPE: $
		1073	CODE:
		1074	eio_set_max_parallel (nthreads);
		1075
		1076	void
		1077	max_idle (unsigned int nthreads)
		1078	PROTOTYPE: $
		1079	CODE:
		1080	eio_set_max_idle (nthreads);
		1081
		1082	void
		1083	idle_timeout (unsigned int seconds)
		1084	PROTOTYPE: $
		1085	CODE:
		1086	eio_set_idle_timeout (seconds);
		1087
		1088	void
		1089	max_outstanding (unsigned int maxreqs)
		1090	PROTOTYPE: $
		1091	CODE:
1130	max_outstanding = maxreqs;	1092	max_outstanding = maxreqs;
1131	OUTPUT:
1132	RETVAL
1133		1093
1134	void	1094	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1095	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:	1096	PPCODE:
1142	{	1097	{
1143	dREQ;	1098	dREQ;
1144		1099
1145	req->type = REQ_OPEN;	1100	req->type = EIO_WD_OPEN;
1146	req->data = newSVsv (pathname);	1101	req_set_path1 (req, pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);
1148	req->fd = flags;
1149	req->mode = mode;
1150		1102
1151	REQ_SEND;	1103	REQ_SEND;
1152	}	1104	}
1153		1105
1154	void	1106	void
		1107	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1108	PPCODE:
		1109	{
		1110	dREQ;
		1111
		1112	req->type = EIO_OPEN;
		1113	req_set_path1 (req, pathname);
		1114	req->int1 = flags;
		1115	req->int2 = mode;
		1116
		1117	REQ_SEND;
		1118	}
		1119
		1120	void
1155	aio_close (fh,callback=&PL_sv_undef)	1121	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1156	SV * fh
1157	SV * callback
1158	PROTOTYPE: $;$
1159	ALIAS:	1122	ALIAS:
1160	aio_close = REQ_CLOSE
1161	aio_fsync = REQ_FSYNC	1123	aio_fsync = EIO_FSYNC
1162	aio_fdatasync = REQ_FDATASYNC	1124	aio_fdatasync = EIO_FDATASYNC
		1125	aio_syncfs = EIO_SYNCFS
1163	PPCODE:	1126	PPCODE:
1164	{	1127	{
		1128	int fd = s_fileno_croak (fh, 0);
1165	dREQ;	1129	dREQ;
1166		1130
1167	req->type = ix;	1131	req->type = ix;
1168	req->fh = newSVsv (fh);	1132	req->sv1 = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1133	req->int1 = fd;
1170		1134
1171	REQ_SEND (req);	1135	REQ_SEND (req);
1172	}	1136	}
1173		1137
1174	void	1138	void
		1139	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	int fd = s_fileno_croak (fh, 0);
		1143	dREQ;
		1144
		1145	req->type = EIO_SYNC_FILE_RANGE;
		1146	req->sv1 = newSVsv (fh);
		1147	req->int1 = fd;
		1148	req->offs = offset;
		1149	req->size = nbytes;
		1150	req->int2 = flags;
		1151
		1152	REQ_SEND (req);
		1153	}
		1154
		1155	void
		1156	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1157	PPCODE:
		1158	{
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	req->type = EIO_FALLOCATE;
		1163	req->sv1 = newSVsv (fh);
		1164	req->int1 = fd;
		1165	req->int2 = mode;
		1166	req->offs = offset;
		1167	req->size = len;
		1168
		1169	REQ_SEND (req);
		1170	}
		1171
		1172	void
		1173	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1177	int fd = s_fileno_croak (fh, 0);
		1178	dREQ;
		1179
		1180	if (expect_false (close_fd < 0))
		1181	{
		1182	int pipefd [2];
		1183
		1184	if (
		1185	#ifdef _WIN32
		1186	_pipe (pipefd, 1, _O_BINARY) < 0
		1187	#else
		1188	pipe (pipefd) < 0
		1189	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1190	#endif
		1191	|| close (pipefd [1]) < 0
		1192	)
		1193	abort (); /*D*/
		1194
		1195	close_fd = pipefd [0];
		1196	}
		1197
		1198	req->type = EIO_DUP2;
		1199	req->int1 = close_fd;
		1200	req->sv2 = newSVsv (fh);
		1201	req->int2 = fd;
		1202
		1203	REQ_SEND (req);
		1204	}
		1205
		1206	void
1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1207	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:	1208	ALIAS:
1183	aio_read = REQ_READ	1209	aio_read = EIO_READ
1184	aio_write = REQ_WRITE	1210	aio_write = EIO_WRITE
1185	PROTOTYPE: $$$$$;$
1186	PPCODE:	1211	PPCODE:
1187	{	1212	{
1188	aio_req req;
1189	STRLEN svlen;	1213	STRLEN svlen;
		1214	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1190	char *svptr = SvPVbyte (data, svlen);	1215	char *svptr = SvPVbyte (data, svlen);
1191		1216	UV len = SvUV (length);
1192	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);
1194		1217
1195	if (dataoffset < 0)	1218	if (dataoffset < 0)
1196	dataoffset += svlen;	1219	dataoffset += svlen;
1197		1220
1198	if (dataoffset < 0 || dataoffset > svlen)	1221	if (dataoffset < 0 || dataoffset > svlen)
1199	croak ("data offset outside of string");	1222	croak ("dataoffset outside of data scalar");
1200		1223
1201	if (ix == REQ_WRITE)	1224	if (ix == EIO_WRITE)
1202	{	1225	{
1203	/* write: check length and adjust. */	1226	/* write: check length and adjust. */
1204	if (length < 0 || length + dataoffset > svlen)	1227	if (!SvOK (length) || len + dataoffset > svlen)
1205	length = svlen - dataoffset;	1228	len = svlen - dataoffset;
1206	}	1229	}
1207	else	1230	else
1208	{	1231	{
1209	/* read: grow scalar as necessary */	1232	/* read: check type and grow scalar as necessary */
		1233	SvUPGRADE (data, SVt_PV);
1210	svptr = SvGROW (data, length + dataoffset);	1234	svptr = SvGROW (data, len + dataoffset + 1);
1211	}	1235	}
1212
1213	if (length < 0)
1214	croak ("length must not be negative");
1215		1236
1216	{	1237	{
1217	dREQ;	1238	dREQ;
1218		1239
1219	req->type = ix;	1240	req->type = ix;
1220	req->fh = newSVsv (fh);	1241	req->sv1 = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1242	req->int1 = fd;
1222	: IoOFP (sv_2io (fh)));	1243	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1223	req->offset = offset;	1244	req->size = len;
1224	req->length = length;
1225	req->data = SvREFCNT_inc (data);	1245	req->sv2 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	1246	req->ptr2 = (char *)svptr + dataoffset;
		1247	req->stroffset = dataoffset;
1227		1248
1228	if (!SvREADONLY (data))	1249	if (!SvREADONLY (data))
1229	{	1250	{
1230	SvREADONLY_on (data);	1251	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	1252	req->flags |= FLAG_SV2_RO_OFF;
1232	}	1253	}
1233		1254
1234	REQ_SEND;	1255	REQ_SEND;
1235	}	1256	}
1236	}	1257	}
1237		1258
1238	void	1259	void
1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1260	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1240	SV * out_fh	1261	ALIAS:
1241	SV * in_fh	1262	aio_readlink = EIO_READLINK
1242	UV in_offset	1263	aio_realpath = EIO_REALPATH
1243	UV length
1244	SV * callback
1245	PROTOTYPE: $$$$;$
1246	PPCODE:	1264	PPCODE:
1247	{	1265	{
		1266	dREQ;
		1267
		1268	req->type = ix;
		1269	req_set_path1 (req, pathname);
		1270
		1271	REQ_SEND;
		1272	}
		1273
		1274	void
		1275	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1276	PPCODE:
		1277	{
		1278	int ifd = s_fileno_croak (in_fh , 0);
		1279	int ofd = s_fileno_croak (out_fh, 1);
1248	dREQ;	1280	dREQ;
1249		1281
1250	req->type = REQ_SENDFILE;	1282	req->type = EIO_SENDFILE;
1251	req->fh = newSVsv (out_fh);	1283	req->sv1 = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1284	req->int1 = ofd;
1253	req->fh2 = newSVsv (in_fh);	1285	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1286	req->int2 = ifd;
1255	req->offset = in_offset;	1287	req->offs = in_offset;
1256	req->length = length;	1288	req->size = length;
1257		1289
1258	REQ_SEND;	1290	REQ_SEND;
1259	}	1291	}
1260		1292
1261	void	1293	void
1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1294	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1263	SV * fh
1264	UV offset
1265	IV length
1266	SV * callback
1267	PROTOTYPE: $$$;$
1268	PPCODE:	1295	PPCODE:
1269	{	1296	{
		1297	int fd = s_fileno_croak (fh, 0);
1270	dREQ;	1298	dREQ;
1271		1299
1272	req->type = REQ_READAHEAD;	1300	req->type = EIO_READAHEAD;
1273	req->fh = newSVsv (fh);	1301	req->sv1 = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1302	req->int1 = fd;
1275	req->offset = offset;	1303	req->offs = offset;
1276	req->length = length;	1304	req->size = length;
1277		1305
1278	REQ_SEND;	1306	REQ_SEND;
1279	}	1307	}
1280		1308
1281	void	1309	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	1310	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1283	SV * fh_or_path
1284	SV * callback
1285	ALIAS:	1311	ALIAS:
1286	aio_stat = REQ_STAT	1312	aio_stat = EIO_STAT
1287	aio_lstat = REQ_LSTAT	1313	aio_lstat = EIO_LSTAT
		1314	aio_statvfs = EIO_STATVFS
1288	PPCODE:	1315	PPCODE:
1289	{	1316	{
1290	dREQ;	1317	dREQ;
1291		1318
1292	New (0, req->statdata, 1, Stat_t);	1319	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		1320
1312	REQ_SEND;	1321	REQ_SEND;
1313	}	1322	}
1314		1323
		1324	UV
		1325	major (UV dev)
		1326	ALIAS:
		1327	minor = 1
		1328	CODE:
		1329	RETVAL = ix ? major (dev) : minor (dev);
		1330	OUTPUT:
		1331	RETVAL
		1332
		1333	UV
		1334	makedev (UV maj, UV min)
		1335	CODE:
		1336	RETVAL = makedev (maj, min);
		1337	OUTPUT:
		1338	RETVAL
		1339
1315	void	1340	void
		1341	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1342	PPCODE:
		1343	{
		1344	dREQ;
		1345
		1346	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1347	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1348	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1360	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1361
		1362	REQ_SEND;
		1363	}
		1364
		1365	void
		1366	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1367	PPCODE:
		1368	{
		1369	dREQ;
		1370
		1371	req->int2 = mode;
		1372	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1373
		1374	REQ_SEND;
		1375	}
		1376
		1377	void
		1378	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1379	PPCODE:
		1380	{
		1381	dREQ;
		1382
		1383	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1384	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1385	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1392	PPCODE:
		1393	{
		1394	dREQ;
		1395
		1396	req->type = EIO_READDIR;
		1397	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1398
		1399	if (flags & EIO_READDIR_DENTS)
		1400	req->int1 |= EIO_READDIR_CUSTOM2;
		1401
		1402	req_set_path1 (req, pathname);
		1403
		1404	REQ_SEND;
		1405	}
		1406
		1407	void
		1408	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1409	PPCODE:
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_MKDIR;
		1414	req->int2 = mode;
		1415	req_set_path1 (req, pathname);
		1416
		1417	REQ_SEND;
		1418	}
		1419
		1420	void
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1421	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1317	SV * pathname
1318	SV * callback
1319	ALIAS:	1422	ALIAS:
1320	aio_unlink = REQ_UNLINK	1423	aio_unlink = EIO_UNLINK
1321	aio_rmdir = REQ_RMDIR	1424	aio_rmdir = EIO_RMDIR
1322	aio_readdir = REQ_READDIR	1425	aio_readdir = EIO_READDIR
1323	PPCODE:	1426	PPCODE:
1324	{	1427	{
1325	dREQ;	1428	dREQ;
1326		1429
1327	req->type = ix;	1430	req->type = ix;
1328	req->data = newSVsv (pathname);	1431	req_set_path1 (req, pathname);
1329	req->dataptr = SvPVbyte_nolen (req->data);	1432
1330
1331	REQ_SEND;	1433	REQ_SEND;
1332	}	1434	}
1333		1435
1334	void	1436	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1437	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1336	SV * oldpath
1337	SV * newpath
1338	SV * callback
1339	ALIAS:	1438	ALIAS:
1340	aio_link = REQ_LINK	1439	aio_link = EIO_LINK
1341	aio_symlink = REQ_SYMLINK	1440	aio_symlink = EIO_SYMLINK
1342	aio_rename = REQ_RENAME	1441	aio_rename = EIO_RENAME
1343	PPCODE:	1442	PPCODE:
1344	{	1443	{
		1444	eio_wd wd2 = 0;
1345	dREQ;	1445	dREQ;
1346		1446
1347	req->type = ix;	1447	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1448	req_set_path1 (req, oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1449	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1350	req->data = newSVsv (newpath);	1450	req->int3 = (long)wd2;
1351	req->dataptr = SvPVbyte_nolen (req->data);
1352		1451
1353	REQ_SEND;	1452	REQ_SEND;
1354	}	1453	}
1355		1454
1356	void	1455	void
1357	aio_busy (delay,callback=&PL_sv_undef)	1456	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1358	double delay
1359	SV * callback
1360	PPCODE:	1457	PPCODE:
1361	{	1458	{
1362	dREQ;	1459	dREQ;
1363		1460
1364	req->type = REQ_BUSY;	1461	req->type = EIO_MKNOD;
1365	req->fd = delay < 0. ? 0 : delay;	1462	req->int2 = (mode_t)mode;
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1463	req->offs = dev;
1367		1464	req_set_path1 (req, pathname);
		1465
1368	REQ_SEND;	1466	REQ_SEND;
1369	}	1467	}
1370		1468
1371	void	1469	void
1372	aio_group (callback=&PL_sv_undef)	1470	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1373	SV * callback	1471	ALIAS:
1374	PROTOTYPE: ;$	1472	aio_mtouch = EIO_MTOUCH
		1473	aio_msync = EIO_MSYNC
1375	PPCODE:	1474	PPCODE:
1376	{	1475	{
		1476	STRLEN svlen;
		1477	char *svptr = SvPVbyte (data, svlen);
		1478	UV len = SvUV (length);
		1479
		1480	if (offset < 0)
		1481	offset += svlen;
		1482
		1483	if (offset < 0 || offset > svlen)
		1484	croak ("offset outside of scalar");
		1485
		1486	if (!SvOK (length) || len + offset > svlen)
		1487	len = svlen - offset;
		1488
		1489	{
		1490	dREQ;
		1491
		1492	req->type = ix;
		1493	req->sv2 = SvREFCNT_inc (data);
		1494	req->ptr2 = (char *)svptr + offset;
		1495	req->size = len;
		1496	req->int1 = flags;
		1497
		1498	REQ_SEND;
		1499	}
		1500	}
		1501
		1502	void
		1503	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1504	PPCODE:
		1505	{
		1506	STRLEN svlen;
		1507	char *svptr = SvPVbyte (data, svlen);
		1508	UV len = SvUV (length);
		1509
		1510	if (offset < 0)
		1511	offset += svlen;
		1512
		1513	if (offset < 0 || offset > svlen)
		1514	croak ("offset outside of scalar");
		1515
		1516	if (!SvOK (length) || len + offset > svlen)
		1517	len = svlen - offset;
		1518
		1519	{
		1520	dREQ;
		1521
		1522	req->type = EIO_MLOCK;
		1523	req->sv2 = SvREFCNT_inc (data);
		1524	req->ptr2 = (char *)svptr + offset;
		1525	req->size = len;
		1526
		1527	REQ_SEND;
		1528	}
		1529	}
		1530
		1531	void
		1532	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1533	PPCODE:
		1534	{
		1535	dREQ;
		1536
		1537	req->type = EIO_MLOCKALL;
		1538	req->int1 = flags;
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1545	PPCODE:
		1546	{
1377	dREQ;	1547	dREQ;
1378		1548
		1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
		1551
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	aio_group (SV *callback=&PL_sv_undef)
		1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
1379	req->type = REQ_GROUP;	1561	req->type = EIO_GROUP;
		1562
1380	req_send (req);	1563	req_submit (req);
1381
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1564	XPUSHs (req_sv (req, aio_grp_stash));
1383	}	1565	}
1384		1566
1385	void	1567	void
1386	aio_nop (callback=&PL_sv_undef)	1568	aio_nop (SV *callback=&PL_sv_undef)
1387	SV * callback	1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
1388	PPCODE:	1572	PPCODE:
1389	{	1573	{
1390	dREQ;	1574	dREQ;
1391		1575
1392	req->type = REQ_NOP;	1576	req->type = ix;
1393		1577
1394	REQ_SEND;	1578	REQ_SEND;
1395	}	1579	}
1396		1580
1397	void	1581	int
1398	aioreq_pri (int pri = DEFAULT_PRI)	1582	aioreq_pri (int pri = 0)
1399	CODE:	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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