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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.202 by root, Thu Sep 29 10:01:35 2011 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	#else
		68
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# 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
42	# else	295	# else
43	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	297	# endif
45	#endif	298	#endif
46		299	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	301	#endif
51		302	#ifndef MAP_LOCKED
52	#if __ia64	303	# 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	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
59		314
60	/* buffer size for various temporary buffers */	315	#ifndef makedev
61	#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
62		324
63	#define dBUF \	325	#ifndef PAGESIZE
64	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	327	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		328
71	enum {	329	enum {
72	REQ_QUIT,	330	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	};	331	};
84		332
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;	333	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
119		336
120	enum {	337	static SV *on_next_submit;
121	PRI_MIN = -4,	338	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;	339	static int max_outstanding;
134	static int respipe [2];
135		340
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	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		342
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	343	static void req_destroy (aio_req req);
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);	344	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	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	}
245		359
246	/* must be called at most once */	360	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
248	{	363	{
249	if (!req->self)	364	if (!req->self)
250	{	365	{
251	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253	}	368	}
254		369
255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256	}	371	}
257		372
258	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
259	{	381	{
260	MAGIC *mg;	382	MAGIC *mg;
261		383
262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		386	&& SvSTASH (SvRV (sv)) != aio_req_stash
		387	&& !sv_derived_from (sv, "IO::AIO::REQ")))
263	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
264		389
265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266		391
267	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	393	}
269		394
		395	static aio_wd
		396	SvAIO_WD (SV *sv)
		397	{
		398	if (!SvROK (sv)
		399	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		401	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		402
		403	return (aio_wd)(long)SvIVX (SvRV (sv));
		404	}
		405
		406	static void
270	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
271	{	408	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	409	if (grp->sv2 && SvOK (grp->sv2))
273	{	410	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	411	dSP;
279		412
280	ENTER;	413	ENTER;
281	SAVETMPS;	414	SAVETMPS;
282	PUSHMARK (SP);	415	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, aio_grp_stash));
284	PUTBACK;	417	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	419	SPAGAIN;
287	FREETMPS;	420	FREETMPS;
288	LEAVE;	421	LEAVE;
289	}
290
291	/* stop if no progress has been made */
292	if (old_len == grp->length)
293	{
294	SvREFCNT_dec (grp->fh2);
295	grp->fh2 = 0;
296	break;
297	}
298	}	422	}
299	}	423	}
300		424
301	static void aio_grp_dec (aio_req grp)	425	static void
		426	req_submit (eio_req *req)
302	{	427	{
303	--grp->length;	428	eio_submit (req);
304		429
305	/* call feeder, if applicable */	430	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	431	{
311	req_invoke (grp);	432	dSP;
312	req_free (grp);	433	SV *cb = sv_2mortal (on_next_submit);
		434
		435	on_next_submit = 0;
		436
		437	PUSHMARK (SP);
		438	PUTBACK;
		439	call_sv (cb, G_DISCARD | G_EVAL);
313	}	440	}
314	}	441	}
315		442
316	static void poll_wait ()	443	static int
		444	req_invoke (eio_req *req)
317	{	445	{
318	fd_set rfd;	446	if (req->flags & FLAG_SV2_RO_OFF)
		447	SvREADONLY_off (req->sv2);
319		448
320	while (nreqs)	449	if (!EIO_CANCELLED (req) && req->callback)
321	{	450	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)
342	{
343	dSP;	451	dSP;
344		452	static SV *sv_result_cache; /* caches the result integer SV */
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	453	SV *sv_result;
346	{
347	errno = req->errorno;
348		454
349	ENTER;	455	ENTER;
350	SAVETMPS;	456	SAVETMPS;
351	PUSHMARK (SP);	457	PUSHMARK (SP);
352	EXTEND (SP, 1);	458	EXTEND (SP, 1);
353		459
		460	/* do not recreate the result IV from scratch each time */
		461	if (expect_true (sv_result_cache))
		462	{
		463	sv_result = sv_result_cache; sv_result_cache = 0;
		464	SvIV_set (sv_result, req->result);
		465	SvIOK_only (sv_result);
		466	}
		467	else
		468	{
		469	sv_result = newSViv (req->result);
		470	SvREADONLY_on (sv_result);
		471	}
		472
354	switch (req->type)	473	switch (req->type)
355	{	474	{
		475	case EIO_WD_OPEN:
		476	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		477	break;
		478
356	case REQ_READDIR:	479	case EIO_READDIR:
357	{	480	{
358	SV *rv = &PL_sv_undef;	481	SV *rv = &PL_sv_undef;
359		482
360	if (req->result >= 0)	483	if (req->result >= 0)
361	{	484	{
362	int i;	485	int i;
363	char *buf = req->data2ptr;	486	char *names = (char *)req->ptr2;
		487	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	488	AV *av = newAV ();
365		489
366	av_extend (av, req->result - 1);	490	av_extend (av, req->result - 1);
367		491
368	for (i = 0; i < req->result; ++i)	492	for (i = 0; i < req->result; ++i)
369	{	493	{
370	SV *sv = newSVpv (buf, 0);	494	if (req->int1 & EIO_READDIR_DENTS)
		495	{
		496	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		497
		498	if (req->int1 & EIO_READDIR_CUSTOM2)
		499	{
		500	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		501	AV *avent = newAV ();
		502
		503	av_extend (avent, 2);
		504
		505	if (!sv_type [ent->type])
		506	{
		507	sv_type [ent->type] = newSViv (ent->type);
		508	SvREADONLY_on (sv_type [ent->type]);
		509	}
		510
		511	av_store (avent, 0, namesv);
		512	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		513	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		514
		515	av_store (av, i, newRV_noinc ((SV *)avent));
		516	}
		517	else
372	av_store (av, i, sv);	518	av_store (av, i, namesv);
		519
		520	++ent;
		521	}
		522	else
		523	{
		524	SV *name = newSVpv (names, 0);
		525	av_store (av, i, name);
373	buf += SvCUR (sv) + 1;	526	names += SvCUR (name) + 1;
		527	}
374	}	528	}
375		529
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	530	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	531	}
378		532
379	PUSHs (rv);	533	PUSHs (rv);
		534
		535	if (req->int1 & EIO_READDIR_CUSTOM1)
		536	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
380	}	537	}
381	break;	538	break;
382		539
383	case REQ_OPEN:	540	case EIO_OPEN:
384	{	541	{
385	/* convert fd to fh */	542	/* convert fd to fh */
386	SV *fh;	543	SV *fh = &PL_sv_undef;
387		544
388	PUSHs (sv_2mortal (newSViv (req->result)));	545	if (req->result >= 0)
389	PUTBACK;	546	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	547	GV *gv = (GV *)sv_newmortal ();
391	SPAGAIN;	548	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		549	char sym [64];
		550	int symlen;
		551
		552	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		553	gv_init (gv, aio_stash, sym, symlen, 0);
392		554
393	fh = SvREFCNT_inc (POPs);	555	symlen = snprintf (
		556	sym,
		557	sizeof (sym),
		558	"%s&=%d",
		559	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		560	(int)req->result
		561	);
394		562
		563	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		564	fh = (SV *)gv;
		565	}
		566
395	PUSHMARK (SP);	567	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	568	}
398	break;	569	break;
399		570
		571	case EIO_STATVFS:
		572	case EIO_FSTATVFS:
		573	{
		574	SV *rv = &PL_sv_undef;
		575
		576	#ifndef _WIN32
		577	if (req->result >= 0)
		578	{
		579	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		580	HV *hv = newHV ();
		581
		582	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		583
		584	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		585	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		586	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		587	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		588	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		589	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		590	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		591	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		592	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		593	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		594	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		595	}
		596	#endif
		597
		598	PUSHs (rv);
		599	}
		600
		601	break;
		602
400	case REQ_GROUP:	603	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	604	req->int1 = 2; /* mark group as finished */
402		605
403	if (req->data)	606	if (req->sv1)
404	{	607	{
405	int i;	608	int i;
406	AV *av = (AV *)req->data;	609	AV *av = (AV *)req->sv1;
407		610
408	EXTEND (SP, AvFILL (av) + 1);	611	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	612	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	613	PUSHs (*av_fetch (av, i, 0));
411	}	614	}
412	break;	615	break;
413		616
414	case REQ_NOP:	617	case EIO_NOP:
415	case REQ_BUSY:	618	case EIO_BUSY:
416	break;	619	break;
417		620
		621	case EIO_READLINK:
		622	case EIO_REALPATH:
		623	if (req->result > 0)
		624	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		625	break;
		626
		627	case EIO_STAT:
		628	case EIO_LSTAT:
		629	case EIO_FSTAT:
		630	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		631
		632	if (!(PL_laststatval = req->result))
		633	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		634	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		635
		636	PUSHs (sv_result);
		637	break;
		638
		639	case EIO_READ:
		640	{
		641	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		642	*SvEND (req->sv2) = 0;
		643	SvPOK_only (req->sv2);
		644	SvSETMAGIC (req->sv2);
		645	PUSHs (sv_result);
		646	}
		647	break;
		648
		649	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		650	if (req->result > 0)
		651	SvIV_set (sv_result, 0);
		652	/* FALLTHROUGH */
		653
418	default:	654	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	655	PUSHs (sv_result);
420	break;	656	break;
421	}	657	}
422		658
		659	errno = req->errorno;
423		660
424	PUTBACK;	661	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	662	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	663	SPAGAIN;
		664
		665	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		666	SvREFCNT_dec (sv_result);
		667	else
		668	sv_result_cache = sv_result;
427		669
428	FREETMPS;	670	FREETMPS;
429	LEAVE;	671	LEAVE;
		672
		673	PUTBACK;
430	}	674	}
431		675
432	if (req->grp)	676	return !!SvTRUE (ERRSV);
433	{
434	aio_req grp = req->grp;
435
436	/* unlink request */
437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
439
440	if (grp->grp_first == req)
441	grp->grp_first = req->grp_next;
442
443	aio_grp_dec (grp);
444	}
445
446	if (SvTRUE (ERRSV))
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	677	}
452		678
453	static void req_free (aio_req req)	679	static void
		680	req_destroy (aio_req req)
454	{	681	{
455	if (req->self)	682	if (req->self)
456	{	683	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
459	}	686	}
460		687
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	688	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
464	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469		693
470	Safefree (req);	694	Safefree (req);
471	}	695	}
472		696
473	static void req_cancel (aio_req req)	697	static void
		698	req_cancel_subs (aio_req grp)
474	{	699	{
475	req->flags |= FLAG_CANCELLED;
476
477	if (req->type == REQ_GROUP)	700	if (grp->type != EIO_GROUP)
		701	return;
		702
		703	SvREFCNT_dec (grp->sv2);
		704	grp->sv2 = 0;
		705
		706	eio_grp_cancel (grp);
		707	}
		708
		709	static void ecb_cold
		710	create_respipe (void)
		711	{
		712	if (s_epipe_renew (&respipe))
		713	croak ("IO::AIO: unable to initialize result pipe");
		714	}
		715
		716	static void
		717	poll_wait (void)
		718	{
		719	while (eio_nreqs ())
478	{	720	{
479	aio_req sub;	721	int size;
480		722
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	723	X_LOCK (reslock);
482	req_cancel (sub);	724	size = res_queue.size;
		725	X_UNLOCK (reslock);
		726
		727	if (size)
		728	return;
		729
		730	etp_maybe_start_thread ();
		731
		732	s_epipe_wait (&respipe);
483	}	733	}
484	}	734	}
485		735
486	static int poll_cb ()	736	static int
		737	poll_cb (void)
487	{	738	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	739	for (;;)
494	{	740	{
495	LOCK (reslock);	741	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		742
498	if (req)	743	if (res > 0)
		744	croak (0);
		745
		746	if (!max_outstanding || max_outstanding > eio_nreqs ())
		747	return res;
		748
		749	poll_wait ();
		750	}
		751	}
		752
		753	static void ecb_cold
		754	reinit (void)
		755	{
		756	create_respipe ();
		757
		758	if (eio_init (want_poll, done_poll) < 0)
		759	croak ("IO::AIO: unable to initialise eio library");
		760	}
		761
		762	/*****************************************************************************/
		763
		764	#if !_POSIX_MAPPED_FILES
		765	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		766	# define munmap(addr,length) (errno = ENOSYS, -1)
		767	#endif
		768
		769	#if !_POSIX_MEMORY_PROTECTION
		770	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		771	# define PROT_NONE 0
		772	# define PROT_WRITE 0
		773	# define MAP_PRIVATE 0
		774	# define MAP_SHARED 0
		775	# define MAP_FIXED 0
		776	#endif
		777
		778	#define MMAP_MAGIC PERL_MAGIC_ext
		779
		780	static int ecb_cold
		781	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		782	{
		783	int old_errno = errno;
		784	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		785	errno = old_errno;
		786
		787	mg->mg_obj = 0; /* just in case */
		788
		789	SvREADONLY_off (sv);
		790
		791	if (SvPVX (sv) != mg->mg_ptr)
		792	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		793
		794	SvCUR_set (sv, 0);
		795	SvPVX (sv) = 0;
		796	SvOK_off (sv);
		797
		798	return 0;
		799	}
		800
		801	static MGVTBL mmap_vtbl = {
		802	0, 0, 0, 0, mmap_free
		803	};
		804
		805	/*****************************************************************************/
		806
		807	static SV *
		808	get_cb (SV *cb_sv)
		809	{
		810	SvGETMAGIC (cb_sv);
		811	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		812	}
		813
		814	#define dREQ \
		815	SV *cb_cv; \
		816	aio_req req; \
		817	int req_pri = next_pri; \
		818	next_pri = EIO_PRI_DEFAULT; \
		819	\
		820	cb_cv = get_cb (callback); \
		821	\
		822	Newz (0, req, 1, eio_req); \
		823	if (!req) \
		824	croak ("out of memory during eio_req allocation"); \
		825	\
		826	req->callback = SvREFCNT_inc (cb_cv); \
		827	req->pri = req_pri
		828
		829	#define REQ_SEND \
		830	PUTBACK; \
		831	req_submit (req); \
		832	SPAGAIN; \
		833	\
		834	if (GIMME_V != G_VOID) \
		835	XPUSHs (req_sv (req, aio_req_stash));
		836
		837	ecb_inline void
		838	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		839	{
		840	if (expect_false (SvROK (path)))
		841	{
		842	AV *av = (AV *)SvRV (path);
		843	SV *wdob;
		844
		845	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		846	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		847
		848	path = AvARRAY (av)[1];
		849	wdob = AvARRAY (av)[0];
		850
		851	if (SvOK (wdob))
499	{	852	{
500	if (!res_queue.size)	853	*wd = SvAIO_WD (wdob);
501	{	854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
502	/* read any signals sent by the worker threads */
503	char buf [32];
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}
507	}
508
509	UNLOCK (reslock);
510
511	if (!req)
512	break;
513
514	--nreqs;
515
516	if (req->type == REQ_QUIT)
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{
520	req->fd = 1; /* mark request as delayed */
521	continue;
522	}	855	}
523	else	856	else
524	{	857	*wd = EIO_INVALID_WD;
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}	858	}
545		859
546	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
547	}	862	}
548		863
549	static void *aio_proc(void *arg);	864	static void ecb_noinline
550		865	req_set_path1 (aio_req req, SV *path)
551	static void start_thread (void)
552	{	866	{
553	worker *wrk = calloc (1, sizeof (worker));	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		868	}
554		869
555	if (!wrk)	870	static void ecb_noinline
556	croak ("unable to allocate worker thread data");	871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		872	{
		873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
557		874
558	sigset_t fullsigset, oldsigset;	875	switch (SvTYPE (rv))
559	pthread_attr_t attr;
560
561	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);
563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565	sigfillset (&fullsigset);
566
567	LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571	{	876	{
572	wrk->prev = &wrk_first;	877	case SVt_PVIO:
573	wrk->next = wrk_first.next;	878	case SVt_PVLV:
574	wrk_first.next->prev = wrk;	879	case SVt_PVGV:
575	wrk_first.next = wrk;	880	req->type = type_fh;
576	started++;	881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
577	}	889	}
578	else
579	free (wrk);
580
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);
583	}	890	}
584		891
585	static void req_send (aio_req req)	892	XS(boot_IO__AIO) ecb_cold;
586	{
587	while (started < wanted && nreqs >= started)
588	start_thread ();
589		893
590	++nreqs;	894	MODULE = IO::AIO PACKAGE = IO::AIO
591		895
592	LOCK (reqlock);	896	PROTOTYPES: ENABLE
593	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);
596		897
597	if (nreqs > max_outstanding)	898	BOOT:
598	for (;;)
599	{
600	poll_cb ();
601
602	if (nreqs <= max_outstanding)
603	break;
604
605	poll_wait ();
606	}
607	}
608
609	static void end_thread (void)
610	{	899	{
611	aio_req req;	900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907	const_iv (EXDEV)
		908	const_iv (ENOSYS)
		909	const_iv (O_RDONLY)
		910	const_iv (O_WRONLY)
		911	const_iv (O_RDWR)
		912	const_iv (O_CREAT)
		913	const_iv (O_TRUNC)
		914	const_iv (O_EXCL)
		915	const_iv (O_APPEND)
612		916
613	Newz (0, req, 1, aio_cb);	917	const_iv (O_ASYNC)
		918	const_iv (O_DIRECT)
		919	const_iv (O_NOATIME)
614		920
615	req->type = REQ_QUIT;	921	const_iv (O_CLOEXEC)
616	req->pri = PRI_MAX + PRI_BIAS;	922	const_iv (O_NOCTTY)
		923	const_iv (O_NOFOLLOW)
		924	const_iv (O_NONBLOCK)
		925	const_iv (O_EXEC)
		926	const_iv (O_SEARCH)
		927	const_iv (O_DIRECTORY)
		928	const_iv (O_DSYNC)
		929	const_iv (O_RSYNC)
		930	const_iv (O_SYNC)
		931	const_iv (O_TTY_INIT)
617		932
618	req_send (req);	933	const_iv (S_IFIFO)
619	}	934	const_iv (S_IFCHR)
		935	const_iv (S_IFBLK)
		936	const_iv (S_IFLNK)
		937	const_iv (S_IFREG)
		938	const_iv (S_IFDIR)
		939	const_iv (S_IFWHT)
		940	const_iv (S_IFSOCK)
		941	const_iv (S_IFMT)
620		942
621	static void min_parallel (int nthreads)	943	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
622	{	944	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
623	if (wanted < nthreads)	945	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
624	wanted = nthreads;	946	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
625	}	947	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		948	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
626		949
627	static void max_parallel (int nthreads)	950	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
628	{	951	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
629	int cur = started;	952	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		953	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		954	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
630		955
631	if (wanted > nthreads)	956	const_iv (ST_RDONLY)
632	wanted = nthreads;	957	const_iv (ST_NOSUID)
		958	const_iv (ST_NODEV)
		959	const_iv (ST_NOEXEC)
		960	const_iv (ST_SYNCHRONOUS)
		961	const_iv (ST_MANDLOCK)
		962	const_iv (ST_WRITE)
		963	const_iv (ST_APPEND)
		964	const_iv (ST_IMMUTABLE)
		965	const_iv (ST_NOATIME)
		966	const_iv (ST_NODIRATIME)
		967	const_iv (ST_RELATIME)
633		968
634	while (cur > wanted)	969	const_iv (PROT_NONE)
635	{	970	const_iv (PROT_EXEC)
636	end_thread ();	971	const_iv (PROT_READ)
637	cur--;	972	const_iv (PROT_WRITE)
638	}
639		973
640	while (started > wanted)	974	/*const_iv (MAP_FIXED)*/
641	{	975	const_iv (MAP_PRIVATE)
642	poll_wait ();	976	const_iv (MAP_SHARED)
643	poll_cb ();	977	const_iv (MAP_ANONYMOUS)
644	}
645	}
646		978
647	static void create_pipe ()	979	/* linuxish */
648	{	980	const_iv (MAP_HUGETLB)
649	if (pipe (respipe))	981	const_iv (MAP_LOCKED)
650	croak ("unable to initialize result pipe");	982	const_iv (MAP_NORESERVE)
		983	const_iv (MAP_POPULATE)
		984	const_iv (MAP_NONBLOCK)
651		985
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	986	const_eio (MCL_FUTURE)
653	croak ("cannot set result pipe to nonblocking mode");	987	const_eio (MCL_CURRENT)
654		988
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	989	const_eio (MS_ASYNC)
656	croak ("cannot set result pipe to nonblocking mode");	990	const_eio (MS_INVALIDATE)
657	}	991	const_eio (MS_SYNC)
658		992
659	/*****************************************************************************/	993	const_eio (MT_MODIFY)
660	/* work around various missing functions */
661		994
662	#if !HAVE_PREADWRITE	995	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
663	# define pread aio_pread	996	const_eio (SYNC_FILE_RANGE_WRITE)
664	# define pwrite aio_pwrite	997	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
665		998
666	/*	999	const_eio (FALLOC_FL_KEEP_SIZE)
667	* make our pread/pwrite safe against themselves, but not against
668	* normal read/write by using a mutex. slows down execution a lot,
669	* but that's your problem, not mine.
670	*/
671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
672		1000
673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1001	const_eio (READDIR_DENTS)
674	{	1002	const_eio (READDIR_DIRS_FIRST)
675	ssize_t res;	1003	const_eio (READDIR_STAT_ORDER)
676	off_t ooffset;	1004	const_eio (READDIR_FOUND_UNKNOWN)
677		1005
678	LOCK (preadwritelock);	1006	const_eio (DT_UNKNOWN)
679	ooffset = lseek (fd, 0, SEEK_CUR);	1007	const_eio (DT_FIFO)
680	lseek (fd, offset, SEEK_SET);	1008	const_eio (DT_CHR)
681	res = read (fd, buf, count);	1009	const_eio (DT_DIR)
682	lseek (fd, ooffset, SEEK_SET);	1010	const_eio (DT_BLK)
683	UNLOCK (preadwritelock);	1011	const_eio (DT_REG)
684		1012	const_eio (DT_LNK)
685	return res;	1013	const_eio (DT_SOCK)
686	}	1014	const_eio (DT_WHT)
687
688	static ssize_t pwrite (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 = write (fd, buf, count);
697	lseek (fd, offset, SEEK_SET);
698	UNLOCK (preadwritelock);
699
700	return res;
701	}
702	#endif
703
704	#if !HAVE_FDATASYNC
705	# define fdatasync fsync
706	#endif
707
708	#if !HAVE_READAHEAD
709	# define readahead aio_readahead
710
711	static ssize_t readahead (int fd, off_t offset, size_t count)
712	{
713	dBUF;
714
715	while (count > 0)
716	{
717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
718
719	pread (fd, aio_buf, len, offset);
720	offset += len;
721	count -= len;
722	}
723
724	errno = 0;
725	}
726	#endif
727
728	#if !HAVE_READDIR_R
729	# define readdir_r aio_readdir_r
730
731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
732
733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
734	{
735	struct dirent *e;
736	int errorno;
737
738	LOCK (readdirlock);
739
740	e = readdir (dirp);
741	errorno = errno;
742
743	if (e)
744	{
745	*res = ent;
746	strcpy (ent->d_name, e->d_name);
747	}
748	else
749	*res = 0;
750
751	UNLOCK (readdirlock);
752
753	errno = errorno;
754	return e ? 0 : -1;
755	}
756	#endif
757
758	/* sendfile always needs emulation */
759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
760	{
761	ssize_t res;
762
763	if (!count)
764	return 0;
765
766	#if HAVE_SENDFILE
767	# if __linux
768	res = sendfile (ofd, ifd, &offset, count);
769
770	# elif __freebsd
771	/*
772	* Of course, the freebsd sendfile is a dire hack with no thoughts
773	* wasted on making it similar to other I/O functions.
774	*/
775	{
776	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778
779	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
781	res = sbytes;
782	}	1015	};
783		1016
784	# elif __hpux	1017	aio_stash = gv_stashpv ("IO::AIO" , 1);
785	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1019	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1020	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
786		1021
787	# elif __solaris	1022	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
788	{	1023	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
789	struct sendfilevec vec;
790	size_t sbytes;
791		1024
792	vec.sfv_fd = ifd;	1025	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
793	vec.sfv_flag = 0;
794	vec.sfv_off = offset;
795	vec.sfv_len = count;
796		1026
797	res = sendfilev (ofd, &vec, 1, &sbytes);	1027	reinit ();
		1028	}
798		1029
799	if (res < 0 && sbytes)	1030	void
		1031	reinit ()
		1032	PROTOTYPE:
		1033
		1034	void
		1035	max_poll_reqs (unsigned int nreqs)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_max_poll_reqs (nreqs);
		1039
		1040	void
		1041	max_poll_time (double nseconds)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_poll_time (nseconds);
		1045
		1046	void
		1047	min_parallel (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_min_parallel (nthreads);
		1051
		1052	void
		1053	max_parallel (unsigned int nthreads)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_max_parallel (nthreads);
		1057
		1058	void
		1059	max_idle (unsigned int nthreads)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_idle (nthreads);
		1063
		1064	void
		1065	idle_timeout (unsigned int seconds)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_idle_timeout (seconds);
		1069
		1070	void
		1071	max_outstanding (unsigned int maxreqs)
		1072	PROTOTYPE: $
		1073	CODE:
		1074	max_outstanding = maxreqs;
		1075
		1076	void
		1077	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_WD_OPEN;
		1083	req_set_path1 (req, pathname);
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->type = EIO_OPEN;
		1095	req_set_path1 (req, pathname);
		1096	req->int1 = flags;
		1097	req->int2 = mode;
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1104	ALIAS:
		1105	aio_fsync = EIO_FSYNC
		1106	aio_fdatasync = EIO_FDATASYNC
		1107	aio_syncfs = EIO_SYNCFS
		1108	PPCODE:
		1109	{
		1110	int fd = s_fileno_croak (fh, 0);
		1111	dREQ;
		1112
		1113	req->type = ix;
		1114	req->sv1 = newSVsv (fh);
		1115	req->int1 = fd;
		1116
		1117	REQ_SEND (req);
		1118	}
		1119
		1120	void
		1121	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1122	PPCODE:
		1123	{
		1124	int fd = s_fileno_croak (fh, 0);
		1125	dREQ;
		1126
		1127	req->type = EIO_SYNC_FILE_RANGE;
		1128	req->sv1 = newSVsv (fh);
		1129	req->int1 = fd;
		1130	req->offs = offset;
800	res = sbytes;	1131	req->size = nbytes;
801	}	1132	req->int2 = flags;
802		1133
803	# endif	1134	REQ_SEND (req);
		1135	}
		1136
		1137	void
		1138	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	req->type = EIO_FALLOCATE;
		1145	req->sv1 = newSVsv (fh);
		1146	req->int1 = fd;
		1147	req->int2 = mode;
		1148	req->offs = offset;
		1149	req->size = len;
		1150
		1151	REQ_SEND (req);
		1152	}
		1153
		1154	void
		1155	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	if (expect_false (close_fd < 0))
		1163	{
		1164	int pipefd [2];
		1165
		1166	if (
		1167	#ifdef _WIN32
		1168	_pipe (pipefd, 1, _O_BINARY) < 0
804	#else	1169	#else
805	res = -1;	1170	pipe (pipefd) < 0
806	errno = ENOSYS;	1171	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
807	#endif	1172	#endif
808		1173	|| close (pipefd [1]) < 0
809	if (res < 0
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
811	#if __solaris
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
813	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819
820	res = 0;
821
822	while (count)
823	{
824	ssize_t cnt;
825
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
827
828	if (cnt <= 0)
829	{	1174	)
830	if (cnt && !res) res = -1;	1175	abort (); /*D*/
831	break;
832	}
833		1176
834	cnt = write (ofd, aio_buf, cnt);	1177	close_fd = pipefd [0];
835
836	if (cnt <= 0)
837	{
838	if (cnt && !res) res = -1;
839	break;
840	}
841
842	offset += cnt;
843	res += cnt;
844	count -= cnt;
845	}
846	}
847
848	return res;
849	}
850
851	/* read a full directory */
852	static void scandir_ (aio_req req, worker *self)
853	{
854	DIR *dirp;
855	union
856	{
857	struct dirent d;
858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
859	} *u;
860	struct dirent *entp;
861	char *name, *names;
862	int memlen = 4096;
863	int memofs = 0;
864	int res = 0;
865	int errorno;
866
867	LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);
869	self->dbuf = u = malloc (sizeof (*u));
870	UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873
874	if (dirp && u && names)
875	for (;;)
876	{
877	errno = 0;
878	readdir_r (dirp, &u->d, &entp);
879
880	if (!entp)
881	break;
882
883	name = entp->d_name;
884
885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
886	{
887	int len = strlen (name) + 1;
888
889	res++;
890
891	while (memofs + len > memlen)
892	{
893	memlen *= 2;
894	LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);
896	UNLOCK (wrklock);
897
898	if (!names)
899	break;
900	}
901
902	memcpy (names + memofs, name, len);
903	memofs += len;
904	}	1178	}
905	}
906		1179
907	if (errno)
908	res = -1;
909
910	req->result = res;
911	}
912
913	/*****************************************************************************/
914
915	static void *aio_proc (void *thr_arg)
916	{
917	aio_req req;
918	int type;
919	worker *self = (worker *)thr_arg;
920
921	do
922	{
923	LOCK (reqlock);
924
925	for (;;)
926	{
927	self->req = req = reqq_shift (&req_queue);
928
929	if (req)
930	break;
931
932	pthread_cond_wait (&reqwait, &reqlock);
933	}
934
935	UNLOCK (reqlock);
936
937	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939
940	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)
942	{
943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945
946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
948
949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
952
953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
954	case REQ_CLOSE: req->result = close (req->fd); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
960
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962	case REQ_FSYNC: req->result = fsync (req->fd); break;
963	case REQ_READDIR: scandir_ (req, self); break;
964
965	case REQ_BUSY:
966	{
967	struct timeval tv;
968
969	tv.tv_sec = req->fd;
970	tv.tv_usec = req->fd2;
971
972	req->result = select (0, 0, 0, 0, &tv);
973	}
974
975	case REQ_GROUP:
976	case REQ_NOP:
977	case REQ_QUIT:
978	break;
979
980	default:
981	req->result = ENOSYS;
982	break;
983	}
984
985	req->errorno = errno;
986
987	LOCK (reslock);
988
989	if (!reqq_push (&res_queue, req))
990	/* write a dummy byte to the pipe so fh becomes ready */
991	write (respipe [1], &respipe, 1);
992
993	self->req = 0;
994	worker_clear (self);
995
996	UNLOCK (reslock);
997	}
998	while (type != REQ_QUIT);
999
1000	LOCK (wrklock);
1001	worker_free (self);
1002	UNLOCK (wrklock);
1003
1004	return 0;
1005	}
1006
1007	/*****************************************************************************/
1008
1009	static void atfork_prepare (void)
1010	{
1011	LOCK (wrklock);
1012	LOCK (reqlock);
1013	LOCK (reslock);
1014	#if !HAVE_PREADWRITE
1015	LOCK (preadwritelock);
1016	#endif
1017	#if !HAVE_READDIR_R
1018	LOCK (readdirlock);
1019	#endif
1020	}
1021
1022	static void atfork_parent (void)
1023	{
1024	#if !HAVE_READDIR_R
1025	UNLOCK (readdirlock);
1026	#endif
1027	#if !HAVE_PREADWRITE
1028	UNLOCK (preadwritelock);
1029	#endif
1030	UNLOCK (reslock);
1031	UNLOCK (reqlock);
1032	UNLOCK (wrklock);
1033	}
1034
1035	static void atfork_child (void)
1036	{
1037	aio_req prv;
1038
1039	while (prv = reqq_shift (&req_queue))
1040	req_free (prv);
1041
1042	while (prv = reqq_shift (&res_queue))
1043	req_free (prv);
1044
1045	while (wrk_first.next != &wrk_first)
1046	{
1047	worker *wrk = wrk_first.next;
1048
1049	if (wrk->req)
1050	req_free (wrk->req);
1051
1052	worker_clear (wrk);
1053	worker_free (wrk);
1054	}
1055
1056	started = 0;
1057	nreqs = 0;
1058
1059	close (respipe [0]);
1060	close (respipe [1]);
1061	create_pipe ();
1062
1063	atfork_parent ();
1064	}
1065
1066	#define dREQ \
1067	aio_req req; \
1068	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
1070	\
1071	if (SvOK (callback) && !SvROK (callback)) \
1072	croak ("callback must be undef or of reference type"); \
1073	\
1074	Newz (0, req, 1, aio_cb); \
1075	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \
1077	\
1078	req->callback = newSVsv (callback); \
1079	req->pri = req_pri
1080
1081	#define REQ_SEND \
1082	req_send (req); \
1083	\
1084	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1086
1087	MODULE = IO::AIO PACKAGE = IO::AIO
1088
1089	PROTOTYPES: ENABLE
1090
1091	BOOT:
1092	{
1093	HV *stash = gv_stashpv ("IO::AIO", 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097
1098	create_pipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101
1102	void
1103	min_parallel (nthreads)
1104	int nthreads
1105	PROTOTYPE: $
1106
1107	void
1108	max_parallel (nthreads)
1109	int nthreads
1110	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:
1117	RETVAL = max_outstanding;
1118	max_outstanding = nreqs;
1119
1120	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$
1127	PPCODE:
1128	{
1129	dREQ;
1130
1131	req->type = REQ_OPEN;	1180	req->type = EIO_DUP2;
		1181	req->int1 = close_fd;
1132	req->data = newSVsv (pathname);	1182	req->sv2 = newSVsv (fh);
1133	req->dataptr = SvPVbyte_nolen (req->data);	1183	req->int2 = fd;
1134	req->fd = flags;
1135	req->mode = mode;
1136		1184
1137	REQ_SEND;	1185	REQ_SEND (req);
1138	}	1186	}
1139		1187
1140	void	1188	void
1141	aio_close (fh,callback=&PL_sv_undef)	1189	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$
1145	ALIAS:	1190	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC
1149	PPCODE:
1150	{
1151	dREQ;
1152
1153	req->type = ix;
1154	req->fh = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156
1157	REQ_SEND (req);
1158	}
1159
1160	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:
1169	aio_read = REQ_READ	1191	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	1192	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$
1172	PPCODE:	1193	PPCODE:
1173	{	1194	{
1174	aio_req req;
1175	STRLEN svlen;	1195	STRLEN svlen;
		1196	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	1197	char *svptr = SvPVbyte (data, svlen);
1177		1198	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		1199
1181	if (dataoffset < 0)	1200	if (dataoffset < 0)
1182	dataoffset += svlen;	1201	dataoffset += svlen;
1183		1202
1184	if (dataoffset < 0 || dataoffset > svlen)	1203	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1204	croak ("dataoffset outside of data scalar");
1186		1205
1187	if (ix == REQ_WRITE)	1206	if (ix == EIO_WRITE)
1188	{	1207	{
1189	/* write: check length and adjust. */	1208	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1209	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1210	len = svlen - dataoffset;
1192	}	1211	}
1193	else	1212	else
1194	{	1213	{
1195	/* read: grow scalar as necessary */	1214	/* read: check type and grow scalar as necessary */
		1215	SvUPGRADE (data, SVt_PV);
1196	svptr = SvGROW (data, length + dataoffset);	1216	svptr = SvGROW (data, len + dataoffset + 1);
1197	}	1217	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		1218
1202	{	1219	{
1203	dREQ;	1220	dREQ;
1204		1221
1205	req->type = ix;	1222	req->type = ix;
1206	req->fh = newSVsv (fh);	1223	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1224	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	1225	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1226	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1227	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1228	req->ptr2 = (char *)svptr + dataoffset;
		1229	req->stroffset = dataoffset;
1213		1230
1214	if (!SvREADONLY (data))	1231	if (!SvREADONLY (data))
1215	{	1232	{
1216	SvREADONLY_on (data);	1233	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1234	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1235	}
1219		1236
1220	REQ_SEND;	1237	REQ_SEND;
1221	}	1238	}
1222	}	1239	}
1223		1240
1224	void	1241	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1242	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1226	SV * out_fh	1243	ALIAS:
1227	SV * in_fh	1244	aio_readlink = EIO_READLINK
1228	UV in_offset	1245	aio_realpath = EIO_REALPATH
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$
1232	PPCODE:	1246	PPCODE:
1233	{	1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req_set_path1 (req, pathname);
		1252
		1253	REQ_SEND;
		1254	}
		1255
		1256	void
		1257	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1258	PPCODE:
		1259	{
		1260	int ifd = s_fileno_croak (in_fh , 0);
		1261	int ofd = s_fileno_croak (out_fh, 1);
1234	dREQ;	1262	dREQ;
1235		1263
1236	req->type = REQ_SENDFILE;	1264	req->type = EIO_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1265	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1266	req->int1 = ofd;
1239	req->fh2 = newSVsv (in_fh);	1267	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1268	req->int2 = ifd;
1241	req->offset = in_offset;	1269	req->offs = in_offset;
1242	req->length = length;	1270	req->size = length;
1243		1271
1244	REQ_SEND;	1272	REQ_SEND;
1245	}	1273	}
1246		1274
1247	void	1275	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1276	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$
1254	PPCODE:	1277	PPCODE:
1255	{	1278	{
		1279	int fd = s_fileno_croak (fh, 0);
1256	dREQ;	1280	dREQ;
1257		1281
1258	req->type = REQ_READAHEAD;	1282	req->type = EIO_READAHEAD;
1259	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1284	req->int1 = fd;
1261	req->offset = offset;	1285	req->offs = offset;
1262	req->length = length;	1286	req->size = length;
1263		1287
1264	REQ_SEND;	1288	REQ_SEND;
1265	}	1289	}
1266		1290
1267	void	1291	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1292	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	1293	ALIAS:
1272	aio_stat = REQ_STAT	1294	aio_stat = EIO_STAT
1273	aio_lstat = REQ_LSTAT	1295	aio_lstat = EIO_LSTAT
		1296	aio_statvfs = EIO_STATVFS
1274	PPCODE:	1297	PPCODE:
1275	{	1298	{
1276	dREQ;	1299	dREQ;
1277		1300
1278	New (0, req->statdata, 1, Stat_t);
1279	if (!req->statdata)
1280	{
1281	req_free (req);
1282	croak ("out of memory during aio_req->statdata allocation");
1283	}
1284
1285	if (SvPOK (fh_or_path))
1286	{
1287	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);
1290	}
1291	else
1292	{
1293	req->type = REQ_FSTAT;
1294	req->fh = newSVsv (fh_or_path);	1301	req->sv1 = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1302	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1296	}
1297
1298	REQ_SEND;	1303	REQ_SEND;
1299	}	1304	}
1300		1305
		1306	UV
		1307	major (UV dev)
		1308	ALIAS:
		1309	minor = 1
		1310	CODE:
		1311	RETVAL = ix ? major (dev) : minor (dev);
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	UV
		1316	makedev (UV maj, UV min)
		1317	CODE:
		1318	RETVAL = makedev (maj, min);
		1319	OUTPUT:
		1320	RETVAL
		1321
1301	void	1322	void
		1323	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1329	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1330	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1331
		1332	REQ_SEND;
		1333	}
		1334
		1335	void
		1336	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1337	PPCODE:
		1338	{
		1339	dREQ;
		1340
		1341	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1342	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1349	PPCODE:
		1350	{
		1351	dREQ;
		1352
		1353	req->int2 = mode;
		1354	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1366	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1367	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
		1373	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = EIO_READDIR;
		1379	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1380
		1381	if (flags & EIO_READDIR_DENTS)
		1382	req->int1 |= EIO_READDIR_CUSTOM2;
		1383
		1384	req_set_path1 (req, pathname);
		1385
		1386	REQ_SEND;
		1387	}
		1388
		1389	void
		1390	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1391	PPCODE:
		1392	{
		1393	dREQ;
		1394
		1395	req->type = EIO_MKDIR;
		1396	req->int2 = mode;
		1397	req_set_path1 (req, pathname);
		1398
		1399	REQ_SEND;
		1400	}
		1401
		1402	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1403	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	1404	ALIAS:
1306	aio_unlink = REQ_UNLINK	1405	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	1406	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	1407	aio_readdir = EIO_READDIR
1309	PPCODE:	1408	PPCODE:
1310	{	1409	{
1311	dREQ;	1410	dREQ;
1312		1411
1313	req->type = ix;	1412	req->type = ix;
1314	req->data = newSVsv (pathname);	1413	req_set_path1 (req, pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1420	ALIAS:
		1421	aio_link = EIO_LINK
		1422	aio_symlink = EIO_SYMLINK
		1423	aio_rename = EIO_RENAME
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427	eio_wd wd2 = 0;
		1428
		1429	req->type = ix;
		1430	req_set_path1 (req, oldpath);
		1431	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1432	req->int3 = (long)wd2;
1316		1433
1317	REQ_SEND;	1434	REQ_SEND;
1318	}	1435	}
1319		1436
1320	void	1437	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1438	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:
1326	aio_link = REQ_LINK
1327	aio_symlink = REQ_SYMLINK
1328	aio_rename = REQ_RENAME
1329	PPCODE:	1439	PPCODE:
1330	{	1440	{
1331	dREQ;	1441	dREQ;
1332		1442
1333	req->type = ix;	1443	req->type = EIO_MKNOD;
1334	req->fh = newSVsv (oldpath);	1444	req->int2 = (mode_t)mode;
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1445	req->offs = dev;
1336	req->data = newSVsv (newpath);	1446	req_set_path1 (req, pathname);
1337	req->dataptr = SvPVbyte_nolen (req->data);
1338		1447
1339	REQ_SEND;	1448	REQ_SEND;
1340	}	1449	}
1341		1450
1342	void	1451	void
		1452	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1453	ALIAS:
		1454	aio_mtouch = EIO_MTOUCH
		1455	aio_msync = EIO_MSYNC
		1456	PPCODE:
		1457	{
		1458	STRLEN svlen;
		1459	char *svptr = SvPVbyte (data, svlen);
		1460	UV len = SvUV (length);
		1461
		1462	if (offset < 0)
		1463	offset += svlen;
		1464
		1465	if (offset < 0 || offset > svlen)
		1466	croak ("offset outside of scalar");
		1467
		1468	if (!SvOK (length) || len + offset > svlen)
		1469	len = svlen - offset;
		1470
		1471	{
		1472	dREQ;
		1473
		1474	req->type = ix;
		1475	req->sv2 = SvREFCNT_inc (data);
		1476	req->ptr2 = (char *)svptr + offset;
		1477	req->size = len;
		1478	req->int1 = flags;
		1479
		1480	REQ_SEND;
		1481	}
		1482	}
		1483
		1484	void
		1485	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1486	PPCODE:
		1487	{
		1488	STRLEN svlen;
		1489	char *svptr = SvPVbyte (data, svlen);
		1490	UV len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_MLOCK;
		1505	req->sv2 = SvREFCNT_inc (data);
		1506	req->ptr2 = (char *)svptr + offset;
		1507	req->size = len;
		1508
		1509	REQ_SEND;
		1510	}
		1511	}
		1512
		1513	void
		1514	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1515	PPCODE:
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCKALL;
		1520	req->int1 = flags;
		1521
		1522	REQ_SEND;
		1523	}
		1524
		1525	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1526	aio_busy (double delay, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1527	PPCODE:
1347	{	1528	{
1348	dREQ;	1529	dREQ;
1349		1530
1350	req->type = REQ_BUSY;	1531	req->type = EIO_BUSY;
1351	req->fd = delay < 0. ? 0 : delay;	1532	req->nv1 = delay < 0. ? 0. : delay;
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1353		1533
1354	REQ_SEND;	1534	REQ_SEND;
1355	}	1535	}
1356		1536
1357	void	1537	void
1358	aio_group (callback=&PL_sv_undef)	1538	aio_group (SV *callback=&PL_sv_undef)
1359	SV * callback
1360	PROTOTYPE: ;$
1361	PPCODE:	1539	PPCODE:
1362	{	1540	{
1363	dREQ;	1541	dREQ;
1364		1542
1365	req->type = REQ_GROUP;	1543	req->type = EIO_GROUP;
		1544
1366	req_send (req);	1545	req_submit (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1546	XPUSHs (req_sv (req, aio_grp_stash));
1369	}	1547	}
1370		1548
1371	void	1549	void
1372	aio_nop (callback=&PL_sv_undef)	1550	aio_nop (SV *callback=&PL_sv_undef)
1373	SV * callback	1551	ALIAS:
		1552	aio_nop = EIO_NOP
		1553	aio_sync = EIO_SYNC
1374	PPCODE:	1554	PPCODE:
1375	{	1555	{
1376	dREQ;	1556	dREQ;
1377		1557
1378	req->type = REQ_NOP;	1558	req->type = ix;
1379		1559
1380	REQ_SEND;	1560	REQ_SEND;
1381	}	1561	}
1382		1562
1383	void	1563	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1564	aioreq_pri (int pri = 0)
1385	CODE:	1565	CODE:
		1566	RETVAL = next_pri;
		1567	if (items > 0)
		1568	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1569	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1570	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1571	next_pri = pri;
		1572	}
		1573	OUTPUT:
		1574	RETVAL
1389		1575
1390	void	1576	void
1391	aioreq_nice (int nice = 0)	1577	aioreq_nice (int nice = 0)
1392	CODE:	1578	CODE:
1393	nice = next_pri - nice;	1579	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1580	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1581	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1582	next_pri = nice;
1397		1583
1398	void	1584	void
1399	flush ()	1585	flush ()
1400	PROTOTYPE:
1401	CODE:	1586	CODE:
1402	while (nreqs)	1587	while (eio_nreqs ())
1403	{	1588	{
1404	poll_wait ();	1589	poll_wait ();
1405	poll_cb ();	1590	poll_cb ();
1406	}	1591	}
1407		1592
1408	void
1409	poll()
1410	PROTOTYPE:
1411	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();
1415	poll_cb ();
1416	}
1417
1418	int	1593	int
1419	poll_fileno()	1594	poll ()
1420	PROTOTYPE:
1421	CODE:	1595	CODE:
1422	RETVAL = respipe [0];	1596	poll_wait ();
1423	OUTPUT:
1424	RETVAL
1425
1426	int
1427	poll_cb(...)
1428	PROTOTYPE:
1429	CODE:
1430	RETVAL = poll_cb ();	1597	RETVAL = poll_cb ();
1431	OUTPUT:	1598	OUTPUT:
1432	RETVAL	1599	RETVAL
1433		1600
1434	void
1435	poll_wait()
1436	PROTOTYPE:
1437	CODE:
1438	if (nreqs)
1439	poll_wait ();
1440
1441	int	1601	int
1442	nreqs()	1602	poll_fileno ()
1443	PROTOTYPE:
1444	CODE:	1603	CODE:
1445	RETVAL = nreqs;	1604	RETVAL = s_epipe_fd (&respipe);
1446	OUTPUT:	1605	OUTPUT:
1447	RETVAL	1606	RETVAL
1448		1607
		1608	int
		1609	poll_cb (...)
		1610	PROTOTYPE:
		1611	CODE:
		1612	RETVAL = poll_cb ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	void
		1617	poll_wait ()
		1618	CODE:
		1619	poll_wait ();
		1620
		1621	int
		1622	nreqs ()
		1623	CODE:
		1624	RETVAL = eio_nreqs ();
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	nready ()
		1630	CODE:
		1631	RETVAL = eio_nready ();
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	int
		1636	npending ()
		1637	CODE:
		1638	RETVAL = eio_npending ();
		1639	OUTPUT:
		1640	RETVAL
		1641
		1642	int
		1643	nthreads ()
		1644	CODE:
		1645	RETVAL = eio_nthreads ();
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1651	CODE:
		1652	RETVAL = posix_fadvise (fh, offset, length, advice);
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	IV
		1657	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1658	CODE:
		1659	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	void
		1664	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1665	PPCODE:
		1666	sv_unmagic (scalar, MMAP_MAGIC);
		1667	{
		1668	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1669	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1670	if (addr == (void *)-1)
		1671	XSRETURN_NO;
		1672
		1673	sv_force_normal (scalar);
		1674
		1675	/* we store the length in mg_obj, as namlen is I32 :/ */
		1676	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1677	->mg_obj = (SV *)length;
		1678
		1679	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1680
		1681	if (!(prot & PROT_WRITE))
		1682	SvREADONLY_on (scalar);
		1683
		1684	if (SvLEN (scalar))
		1685	Safefree (SvPVX (scalar));
		1686
		1687	SvPVX (scalar) = (char *)addr;
		1688	SvCUR_set (scalar, length);
		1689	SvLEN_set (scalar, 0);
		1690	SvPOK_only (scalar);
		1691
		1692	XSRETURN_YES;
		1693	}
		1694
		1695	void
		1696	munmap (SV *scalar)
		1697	CODE:
		1698	sv_unmagic (scalar, MMAP_MAGIC);
		1699
		1700	int
		1701	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1702	ALIAS:
		1703	mprotect = 1
		1704	CODE:
		1705	{
		1706	STRLEN svlen;
		1707	void *addr = SvPVbyte (scalar, svlen);
		1708	size_t len = SvUV (length);
		1709
		1710	if (offset < 0)
		1711	offset += svlen;
		1712
		1713	if (offset < 0 || offset > svlen)
		1714	croak ("offset outside of scalar");
		1715
		1716	if (!SvOK (length) || len + offset > svlen)
		1717	len = svlen - offset;
		1718
		1719	addr = (void *)(((intptr_t)addr) + offset);
		1720	eio_page_align (&addr, &len);
		1721
		1722	switch (ix)
		1723	{
		1724	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1725	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1726	}
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1733	CODE:
		1734	{
		1735	STRLEN svlen;
		1736	void *addr = SvPVbyte (scalar, svlen);
		1737	size_t len = SvUV (length);
		1738
		1739	if (offset < 0)
		1740	offset += svlen;
		1741
		1742	if (offset < 0 || offset > svlen)
		1743	croak ("offset outside of scalar");
		1744
		1745	if (!SvOK (length) || len + offset > svlen)
		1746	len = svlen - offset;
		1747
		1748	addr = (void *)(((intptr_t)addr) + offset);
		1749	eio_page_align (&addr, &len);
		1750	#if _POSIX_MEMLOCK_RANGE
		1751	RETVAL = munlock (addr, len);
		1752	#else
		1753	RETVAL = ((errno = ENOSYS), -1);
		1754	#endif
		1755	}
		1756	OUTPUT:
		1757	RETVAL
		1758
		1759	int
		1760	munlockall ()
		1761	CODE:
		1762	#if _POSIX_MEMLOCK
		1763	munlockall ();
		1764	#else
		1765	RETVAL = -1;
		1766	errno = ENOSYS;
		1767	#endif
		1768	OUTPUT:
		1769	RETVAL
		1770
		1771	void _on_next_submit (SV *cb)
		1772	CODE:
		1773	SvREFCNT_dec (on_next_submit);
		1774	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1775
1449	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1450		1777
		1778	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1779
		1780	BOOT:
		1781	{
		1782	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1783	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1784	}
		1785
		1786	void
		1787	DESTROY (SV *self)
		1788	CODE:
		1789	{
		1790	aio_wd wd = SvAIO_WD (self);
		1791	#if HAVE_AT
		1792	SV *callback = &PL_sv_undef;
		1793	dREQ; /* clobbers next_pri :/ */
		1794	req->type = EIO_WD_CLOSE;
		1795	req->wd = wd;
		1796	REQ_SEND;
		1797	#else
		1798	eio_wd_close_sync (wd);
		1799	#endif
		1800	}
		1801
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1802	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1803
1453	void	1804	void
1454	cancel (aio_req_ornot req)	1805	cancel (aio_req_ornot req)
1455	CODE:	1806	CODE:
1456	req_cancel (req);	1807	eio_cancel (req);
1457		1808
1458	void	1809	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1810	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460	CODE:	1811	PPCODE:
		1812	{
		1813	if (GIMME_V != G_VOID)
		1814	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1815
		1816	if (items > 1)
		1817	{
		1818	SV *cb_cv =get_cb (callback);
		1819
1461	SvREFCNT_dec (req->callback);	1820	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	1821	req->callback = SvREFCNT_inc (cb_cv);
		1822	}
		1823	}
1463		1824
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1825	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		1826
1466	void	1827	void
1467	add (aio_req grp, ...)	1828	add (aio_req grp, ...)
1468	PPCODE:	1829	PPCODE:
1469	{	1830	{
1470	int i;	1831	int i;
1471	aio_req req;
1472		1832
1473	if (grp->fd == 2)	1833	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1834	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		1835
1476	for (i = 1; i < items; ++i )	1836	for (i = 1; i < items; ++i )
1477	{	1837	{
		1838	aio_req req;
		1839
1478	if (GIMME_V != G_VOID)	1840	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1841	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		1842
1481	req = SvAIO_REQ (ST (i));	1843	req = SvAIO_REQ (ST (i));
1482		1844
1483	if (req)	1845	if (req)
1484	{	1846	eio_grp_add (grp, req);
1485	++grp->length;
1486	req->grp = grp;
1487
1488	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;
1490
1491	if (grp->grp_first)
1492	grp->grp_first->grp_prev = req;
1493
1494	grp->grp_first = req;
1495	}
1496	}	1847	}
1497	}	1848	}
		1849
		1850	void
		1851	cancel_subs (aio_req_ornot req)
		1852	CODE:
		1853	req_cancel_subs (req);
1498		1854
1499	void	1855	void
1500	result (aio_req grp, ...)	1856	result (aio_req grp, ...)
1501	CODE:	1857	CODE:
1502	{	1858	{
1503	int i;	1859	int i;
		1860	AV *av;
		1861
		1862	grp->errorno = errno;
		1863
1504	AV *av = newAV ();	1864	av = newAV ();
		1865	av_extend (av, items - 1);
1505		1866
1506	for (i = 1; i < items; ++i )	1867	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1868	av_push (av, newSVsv (ST (i)));
1508		1869
1509	SvREFCNT_dec (grp->data);	1870	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1871	grp->sv1 = (SV *)av;
1511	}	1872	}
		1873
		1874	void
		1875	errno (aio_req grp, int errorno = errno)
		1876	CODE:
		1877	grp->errorno = errorno;
1512		1878
1513	void	1879	void
1514	limit (aio_req grp, int limit)	1880	limit (aio_req grp, int limit)
1515	CODE:	1881	CODE:
1516	grp->fd2 = limit;	1882	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		1883
1519	void	1884	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1885	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1886	CODE:
1522	{	1887	{
1523	SvREFCNT_dec (grp->fh2);	1888	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1889	grp->sv2 = newSVsv (callback);
		1890	grp->feed = aio_grp_feed;
1525		1891
1526	if (grp->fd2 <= 0)	1892	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1893	grp->int2 = 2;
1528		1894
1529	aio_grp_feed (grp);	1895	eio_grp_limit (grp, grp->int2);
1530	}	1896	}
1531		1897

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