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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.186 by root, Thu Jul 14 22:36:17 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>	21	# include <sys/mman.h>
35	# elif __freebsd	22	#endif
36	# include <sys/socket.h>	23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	#ifdef _WIN32
		28
		29	# define EIO_STRUCT_DIRENT Direntry_t
		30	# undef malloc
		31	# undef free
		32
		33	// perl overrides all those nice win32 functions
		34	# undef open
		35	# undef read
		36	# undef write
		37	# undef send
		38	# undef recv
		39	# undef stat
		40	# undef fstat
		41	# define lstat stat
		42	# undef truncate
		43	# undef ftruncate
		44	# undef open
		45	# undef close
		46	# undef unlink
		47	# undef rmdir
		48	# undef rename
		49	# undef lseek
		50
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54
		55	#else
		56
37	# include <sys/uio.h>	57	# include <sys/time.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	58	# include <sys/select.h>
		59	# include <unistd.h>
		60	# include <utime.h>
		61	# include <signal.h>
		62	# define EIO_STRUCT_DIRENT struct dirent
		63
		64	#endif
		65
		66	/* perl stupidly overrides readdir and maybe others */
		67	/* with thread-unsafe versions, imagine that :( */
		68	#undef readdir
		69	#undef opendir
		70	#undef closedir
		71
		72	#define EIO_STRUCT_STAT Stat_t
		73
		74	/* use NV for 32 bit perls as it allows larger offsets */
		75	#if IVSIZE >= 8
		76	# define VAL64 IV
		77	# define SvVAL64 SvIV
		78	# define newSVval64 newSViv
		79	#else
		80	# define VAL64 NV
		81	# define SvVAL64 SvNV
		82	# define newSVval64 newSVnv
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	typedef SV SV8; /* byte-sv, used for argument-checking */
		99	typedef int aio_rfd; /* read file desriptor */
		100	typedef int aio_wfd; /* write file descriptor */
		101
		102	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/config.h"
		113	#include "libeio/eio.h"
		114
		115	/* Linux/others */
		116	#ifndef O_ASYNC
		117	# define O_ASYNC 0
		118	#endif
		119	#ifndef O_DIRECT
		120	# define O_DIRECT 0
		121	#endif
		122	#ifndef O_NOATIME
		123	# define O_NOATIME 0
		124	#endif
		125
		126	/* POSIX */
		127	#ifndef O_CLOEXEC
		128	# define O_CLOEXEC 0
		129	#endif
		130	#ifndef O_NOFOLLOW
		131	# define O_NOFOLLOW 0
		132	#endif
		133	#ifndef O_NOCTTY
		134	# define O_NOCTTY 0
		135	#endif
		136	#ifndef O_NONBLOCK
		137	# define O_NONBLOCK 0
		138	#endif
		139	#ifndef O_EXEC
		140	# define O_EXEC 0
		141	#endif
		142	#ifndef O_SEARCH
		143	# define O_SEARCH 0
		144	#endif
		145	#ifndef O_DIRECTORY
		146	# define O_DIRECTORY 0
		147	#endif
		148	#ifndef O_DSYNC
		149	# define O_DSYNC 0
		150	#endif
		151	#ifndef O_RSYNC
		152	# define O_RSYNC 0
		153	#endif
		154	#ifndef O_SYNC
		155	# define O_SYNC 0
		156	#endif
		157	#ifndef O_TTY_INIT
		158	# define O_TTY_INIT 0
		159	#endif
		160
		161	#ifndef POSIX_FADV_NORMAL
		162	# define POSIX_FADV_NORMAL 0
		163	#endif
		164	#ifndef POSIX_FADV_SEQUENTIAL
		165	# define POSIX_FADV_SEQUENTIAL 0
		166	#endif
		167	#ifndef POSIX_FADV_RANDOM
		168	# define POSIX_FADV_RANDOM 0
		169	#endif
		170	#ifndef POSIX_FADV_NOREUSE
		171	# define POSIX_FADV_NOREUSE 0
		172	#endif
		173	#ifndef POSIX_FADV_WILLNEED
		174	# define POSIX_FADV_WILLNEED 0
		175	#endif
		176	#ifndef POSIX_FADV_DONTNEED
		177	# define POSIX_FADV_DONTNEED 0
		178	#endif
		179
		180	#if !HAVE_POSIX_FADVISE
		181	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		182	#endif
		183
		184	#ifndef POSIX_MADV_NORMAL
		185	# define POSIX_MADV_NORMAL 0
		186	#endif
		187	#ifndef POSIX_MADV_SEQUENTIAL
		188	# define POSIX_MADV_SEQUENTIAL 0
		189	#endif
		190	#ifndef POSIX_MADV_RANDOM
		191	# define POSIX_MADV_RANDOM 0
		192	#endif
		193	#ifndef POSIX_MADV_WILLNEED
		194	# define POSIX_MADV_WILLNEED 0
		195	#endif
		196	#ifndef POSIX_MADV_DONTNEED
		197	# define POSIX_MADV_DONTNEED 0
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef PROT_NONE
		205	# define PROT_NONE 0
		206	#endif
		207	#ifndef PROT_READ
		208	# define PROT_READ 0
		209	#endif
		210	#ifndef PROT_WRITE
		211	# define PROT_READ 0
		212	#endif
		213	#ifndef PROT_EXEC
		214	# define PROT_EXEC 0
		215	#endif
		216
		217	#ifndef ST_NODEV
		218	# define ST_NODEV 0
		219	#endif
		220	#ifndef ST_NOEXEC
		221	# define ST_NOEXEC 0
		222	#endif
		223	#ifndef ST_SYNCHRONOUS
		224	# define ST_SYNCHRONOUS 0
		225	#endif
		226	#ifndef ST_MANDLOCK
		227	# define ST_MANDLOCK 0
		228	#endif
		229	#ifndef ST_WRITE
		230	# define ST_WRITE 0
		231	#endif
		232	#ifndef ST_APPEND
		233	# define ST_APPEND 0
		234	#endif
		235	#ifndef ST_IMMUTABLE
		236	# define ST_IMMUTABLE 0
		237	#endif
		238	#ifndef ST_NOATIME
		239	# define ST_NOATIME 0
		240	#endif
		241	#ifndef ST_NODIRATIME
		242	# define ST_NODIRATIME 0
		243	#endif
		244	#ifndef ST_RELATIME
		245	# define ST_RELATIME 0
		246	#endif
		247
		248	#ifndef S_IFIFO
		249	# define S_IFIFO 0
		250	#endif
		251	#ifndef S_IFCHR
		252	# define S_IFCHR 0
		253	#endif
		254	#ifndef S_IFBLK
		255	# define S_IFBLK 0
		256	#endif
		257	#ifndef S_IFLNK
		258	# define S_IFLNK 0
		259	#endif
		260	#ifndef S_IFREG
		261	# define S_IFREG 0
		262	#endif
		263	#ifndef S_IFDIR
		264	# define S_IFDIR 0
		265	#endif
		266	#ifndef S_IFWHT
		267	# define S_IFWHT 0
		268	#endif
		269	#ifndef S_IFSOCK
		270	# define S_IFSOCK 0
		271	#endif
		272
		273	#ifndef MAP_ANONYMOUS
		274	# ifdef MAP_ANON
		275	# define MAP_ANONYMOUS MAP_ANON
42	# else	276	# else
43	# error sendfile support requested but not available	277	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	278	# endif
45	#endif	279	#endif
46		280	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	281	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	282	#endif
51		283	#ifndef MAP_LOCKED
52	#if __ia64	284	# 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	285	#endif
		286	#ifndef MAP_NORESERVE
		287	# define MAP_NORESERVE 0
		288	#endif
		289	#ifndef MAP_POPULATE
		290	# define MAP_POPULATE 0
		291	#endif
		292	#ifndef MAP_NONBLOCK
		293	# define MAP_NONBLOCK 0
		294	#endif
59		295
60	/* buffer size for various temporary buffers */	296	#ifndef makedev
61	#define AIO_BUFSIZE 65536	297	# define makedev(maj,min) (((maj) << 8) | (min))
		298	#endif
		299	#ifndef major
		300	# define major(dev) ((dev) >> 8)
		301	#endif
		302	#ifndef minor
		303	# define minor(dev) ((dev) & 0xff)
		304	#endif
62		305
63	#define dBUF \	306	#ifndef PAGESIZE
64	char *aio_buf; \	307	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	308	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	309
67	UNLOCK (wrklock); \	310	static int req_invoke (eio_req *req);
68	if (!aio_buf) \	311	#define EIO_FINISH(req) req_invoke (req)
69	return -1;	312	static void req_destroy (eio_req *grp);
		313	#define EIO_DESTROY(req) req_destroy (req)
70		314
71	enum {	315	enum {
72	REQ_QUIT,	316	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	};	317	};
84		318
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	319	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		320
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;	321	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	322	typedef eio_req *aio_req_ornot;
119		323
120	enum {	324	static SV *on_next_submit;
121	PRI_MIN = -4,	325	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;	326	static int max_outstanding;
134	static int respipe [2];
135		327
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	328	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		329
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	330	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);	331	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	332
		333	static void want_poll (void)
		334	{
		335	/* write a dummy byte to the pipe so fh becomes ready */
		336	s_epipe_signal (&respipe);
		337	}
		338
		339	static void done_poll (void)
		340	{
		341	/* read any signals sent by the worker threads */
		342	s_epipe_drain (&respipe);
		343	}
245		344
246	/* must be called at most once */	345	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	346	static SV *req_sv (aio_req req, HV *stash)
248	{	347	{
249	if (!req->self)	348	if (!req->self)
250	{	349	{
251	req->self = (SV *)newHV ();	350	req->self = (SV *)newHV ();
252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	351	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253	}	352	}
254		353
255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	354	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256	}	355	}
257		356
258	static aio_req SvAIO_REQ (SV *sv)	357	static aio_req SvAIO_REQ (SV *sv)
259	{	358	{
260	MAGIC *mg;	359	MAGIC *mg;
261		360
262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	361	if (!SvROK (sv)
		362	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		363	&& SvSTASH (SvRV (sv)) != aio_req_stash
		364	&& !sv_derived_from (sv, "IO::AIO::REQ")))
263	croak ("object of class " AIO_REQ_KLASS " expected");	365	croak ("object of class IO::AIO::REQ expected");
264		366
265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	367	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266		368
267	return mg ? (aio_req)mg->mg_ptr : 0;	369	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	370	}
269		371
270	static void aio_grp_feed (aio_req grp)	372	static void aio_grp_feed (aio_req grp)
271	{	373	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	374	if (grp->sv2 && SvOK (grp->sv2))
273	{	375	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	376	dSP;
279		377
280	ENTER;	378	ENTER;
281	SAVETMPS;	379	SAVETMPS;
282	PUSHMARK (SP);	380	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	381	XPUSHs (req_sv (grp, aio_grp_stash));
284	PUTBACK;	382	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	384	SPAGAIN;
287	FREETMPS;	385	FREETMPS;
288	LEAVE;	386	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	}	387	}
299	}	388	}
300		389
301	static void aio_grp_dec (aio_req grp)	390	static void req_submit (eio_req *req)
302	{	391	{
303	--grp->length;	392	eio_submit (req);
304		393
305	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	395	{
311	req_invoke (grp);	396	dSP;
312	req_free (grp);	397	SV *cb = sv_2mortal (on_next_submit);
		398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
313	}	404	}
314	}	405	}
315		406
316	static void poll_wait ()	407	static int req_invoke (eio_req *req)
317	{	408	{
318	fd_set rfd;	409	if (req->flags & FLAG_SV2_RO_OFF)
		410	SvREADONLY_off (req->sv2);
319		411
320	while (nreqs)	412	if (!EIO_CANCELLED (req) && req->callback)
321	{	413	{
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;	414	dSP;
344		415	static SV *sv_result_cache; /* caches the result integer SV */
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	416	SV *sv_result;
346	{
347	errno = req->errorno;
348		417
349	ENTER;	418	ENTER;
350	SAVETMPS;	419	SAVETMPS;
351	PUSHMARK (SP);	420	PUSHMARK (SP);
352	EXTEND (SP, 1);	421	EXTEND (SP, 1);
353		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
		425	{
		426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
		435
354	switch (req->type)	436	switch (req->type)
355	{	437	{
356	case REQ_READDIR:	438	case EIO_READDIR:
357	{	439	{
358	SV *rv = &PL_sv_undef;	440	SV *rv = &PL_sv_undef;
359		441
360	if (req->result >= 0)	442	if (req->result >= 0)
361	{	443	{
362	int i;	444	int i;
363	char *buf = req->data2ptr;	445	char *names = (char *)req->ptr2;
		446	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	447	AV *av = newAV ();
365		448
366	av_extend (av, req->result - 1);	449	av_extend (av, req->result - 1);
367		450
368	for (i = 0; i < req->result; ++i)	451	for (i = 0; i < req->result; ++i)
369	{	452	{
370	SV *sv = newSVpv (buf, 0);	453	if (req->int1 & EIO_READDIR_DENTS)
		454	{
		455	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		456
		457	if (req->int1 & EIO_READDIR_CUSTOM2)
		458	{
		459	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		460	AV *avent = newAV ();
		461
		462	av_extend (avent, 2);
		463
		464	if (!sv_type [ent->type])
		465	{
		466	sv_type [ent->type] = newSViv (ent->type);
		467	SvREADONLY_on (sv_type [ent->type]);
		468	}
		469
		470	av_store (avent, 0, namesv);
		471	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		472	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		473
		474	av_store (av, i, newRV_noinc ((SV *)avent));
		475	}
		476	else
372	av_store (av, i, sv);	477	av_store (av, i, namesv);
		478
		479	++ent;
		480	}
		481	else
		482	{
		483	SV *name = newSVpv (names, 0);
		484	av_store (av, i, name);
373	buf += SvCUR (sv) + 1;	485	names += SvCUR (name) + 1;
		486	}
374	}	487	}
375		488
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	489	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	490	}
378		491
379	PUSHs (rv);	492	PUSHs (rv);
		493
		494	if (req->int1 & EIO_READDIR_CUSTOM1)
		495	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
380	}	496	}
381	break;	497	break;
382		498
383	case REQ_OPEN:	499	case EIO_OPEN:
384	{	500	{
385	/* convert fd to fh */	501	/* convert fd to fh */
386	SV *fh;	502	SV *fh = &PL_sv_undef;
387		503
388	PUSHs (sv_2mortal (newSViv (req->result)));	504	if (req->result >= 0)
389	PUTBACK;	505	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	506	GV *gv = (GV *)sv_newmortal ();
391	SPAGAIN;	507	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		508	char sym [64];
		509	int symlen;
		510
		511	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		512	gv_init (gv, aio_stash, sym, symlen, 0);
392		513
393	fh = SvREFCNT_inc (POPs);	514	symlen = snprintf (
		515	sym,
		516	sizeof (sym),
		517	"%s&=%d",
		518	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		519	(int)req->result
		520	);
394		521
		522	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		523	fh = (SV *)gv;
		524	}
		525
395	PUSHMARK (SP);	526	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	527	}
398	break;	528	break;
399		529
		530	case EIO_STATVFS:
		531	case EIO_FSTATVFS:
		532	{
		533	SV *rv = &PL_sv_undef;
		534
		535	if (req->result >= 0)
		536	{
		537	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		538	HV *hv = newHV ();
		539
		540	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		541
		542	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		543	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		544	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		545	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		546	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		547	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		548	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		549	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		550	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		551	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		552	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		553	}
		554
		555	PUSHs (rv);
		556	}
		557
		558	break;
		559
400	case REQ_GROUP:	560	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	561	req->int1 = 2; /* mark group as finished */
402		562
403	if (req->data)	563	if (req->sv1)
404	{	564	{
405	int i;	565	int i;
406	AV *av = (AV *)req->data;	566	AV *av = (AV *)req->sv1;
407		567
408	EXTEND (SP, AvFILL (av) + 1);	568	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	569	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	570	PUSHs (*av_fetch (av, i, 0));
411	}	571	}
412	break;	572	break;
413		573
414	case REQ_NOP:	574	case EIO_NOP:
415	case REQ_BUSY:	575	case EIO_BUSY:
416	break;	576	break;
417		577
		578	case EIO_READLINK:
		579	case EIO_REALPATH:
		580	if (req->result > 0)
		581	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		582	break;
		583
		584	case EIO_STAT:
		585	case EIO_LSTAT:
		586	case EIO_FSTAT:
		587	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		588	PL_laststatval = req->result;
		589	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		590	PUSHs (sv_result);
		591	break;
		592
		593	case EIO_READ:
		594	{
		595	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		596	*SvEND (req->sv2) = 0;
		597	SvPOK_only (req->sv2);
		598	SvSETMAGIC (req->sv2);
		599	PUSHs (sv_result);
		600	}
		601	break;
		602
		603	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		604	if (req->result > 0)
		605	SvIV_set (sv_result, 0);
		606	/* FALLTHROUGH */
		607
418	default:	608	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	609	PUSHs (sv_result);
420	break;	610	break;
421	}	611	}
422		612
		613	errno = req->errorno;
423		614
424	PUTBACK;	615	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	616	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	617	SPAGAIN;
		618
		619	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		620	SvREFCNT_dec (sv_result);
		621	else
		622	sv_result_cache = sv_result;
427		623
428	FREETMPS;	624	FREETMPS;
429	LEAVE;	625	LEAVE;
		626
		627	PUTBACK;
430	}	628	}
431		629
432	if (req->grp)	630	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	}	631	}
452		632
453	static void req_free (aio_req req)	633	static void req_destroy (aio_req req)
454	{	634	{
455	if (req->self)	635	if (req->self)
456	{	636	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	637	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	638	SvREFCNT_dec (req->self);
459	}	639	}
460		640
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	641	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	642	SvREFCNT_dec (req->sv2);
464	SvREFCNT_dec (req->callback);	643	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469		644
470	Safefree (req);	645	Safefree (req);
471	}	646	}
472		647
473	static void req_cancel (aio_req req)	648	static void req_cancel_subs (aio_req grp)
474	{	649	{
475	req->flags |= FLAG_CANCELLED;	650	aio_req sub;
476		651
477	if (req->type == REQ_GROUP)	652	if (grp->type != EIO_GROUP)
		653	return;
		654
		655	SvREFCNT_dec (grp->sv2);
		656	grp->sv2 = 0;
		657
		658	eio_grp_cancel (grp);
		659	}
		660
		661	static void create_respipe (void)
		662	{
		663	if (s_epipe_renew (&respipe))
		664	croak ("IO::AIO: unable to initialize result pipe");
		665	}
		666
		667	static void poll_wait (void)
		668	{
		669	while (eio_nreqs ())
478	{	670	{
479	aio_req sub;	671	int size;
480		672
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	673	X_LOCK (reslock);
482	req_cancel (sub);	674	size = res_queue.size;
		675	X_UNLOCK (reslock);
		676
		677	if (size)
		678	return;
		679
		680	etp_maybe_start_thread ();
		681
		682	s_epipe_wait (&respipe);
483	}	683	}
484	}	684	}
485		685
486	static int poll_cb ()	686	static int poll_cb (void)
487	{	687	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	688	for (;;)
494	{	689	{
495	LOCK (reslock);	690	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		691
498	if (req)	692	if (res > 0)
499	{
500	if (!res_queue.size)
501	{
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;	693	croak (0);
513		694
514	--nreqs;	695	if (!max_outstanding || max_outstanding > eio_nreqs ())
		696	return res;
515		697
516	if (req->type == REQ_QUIT)	698	poll_wait ();
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{
520	req->fd = 1; /* mark request as delayed */
521	continue;
522	}
523	else
524	{
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	}	699	}
545
546	return count;
547	}	700	}
548		701
549	static void *aio_proc(void *arg);
550
551	static void start_thread (void)	702	static void atfork_child (void)
552	{	703	{
553	worker *wrk = calloc (1, sizeof (worker));	704	create_respipe ();
554
555	if (!wrk)
556	croak ("unable to allocate worker thread data");
557
558	sigset_t fullsigset, oldsigset;
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	{
572	wrk->prev = &wrk_first;
573	wrk->next = wrk_first.next;
574	wrk_first.next->prev = wrk;
575	wrk_first.next = wrk;
576	started++;
577	}
578	else
579	free (wrk);
580
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);
583	}
584
585	static void req_send (aio_req req)
586	{
587	while (started < wanted && nreqs >= started)
588	start_thread ();
589
590	++nreqs;
591
592	LOCK (reqlock);
593	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);
596
597	if (nreqs > max_outstanding)
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	{
611	aio_req req;
612
613	Newz (0, req, 1, aio_cb);
614
615	req->type = REQ_QUIT;
616	req->pri = PRI_MAX + PRI_BIAS;
617
618	req_send (req);
619	}
620
621	static void min_parallel (int nthreads)
622	{
623	if (wanted < nthreads)
624	wanted = nthreads;
625	}
626
627	static void max_parallel (int nthreads)
628	{
629	int cur = started;
630
631	if (wanted > nthreads)
632	wanted = nthreads;
633
634	while (cur > wanted)
635	{
636	end_thread ();
637	cur--;
638	}
639
640	while (started > wanted)
641	{
642	poll_wait ();
643	poll_cb ();
644	}
645	}
646
647	static void create_pipe ()
648	{
649	if (pipe (respipe))
650	croak ("unable to initialize result pipe");
651
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
653	croak ("cannot set result pipe to nonblocking mode");
654
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657	}	705	}
658		706
659	/*****************************************************************************/	707	/*****************************************************************************/
660	/* work around various missing functions */
661		708
662	#if !HAVE_PREADWRITE	709	#if !_POSIX_MAPPED_FILES
663	# define pread aio_pread	710	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
664	# define pwrite aio_pwrite	711	# define munmap(addr,length) (errno = ENOSYS, -1)
665
666	/*
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
673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
674	{
675	ssize_t res;
676	off_t ooffset;
677
678	LOCK (preadwritelock);
679	ooffset = lseek (fd, 0, SEEK_CUR);
680	lseek (fd, offset, SEEK_SET);
681	res = read (fd, buf, count);
682	lseek (fd, ooffset, SEEK_SET);
683	UNLOCK (preadwritelock);
684
685	return res;
686	}
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	}
783
784	# elif __hpux
785	res = sendfile (ofd, ifd, offset, count, 0, 0);
786
787	# elif __solaris
788	{
789	struct sendfilevec vec;
790	size_t sbytes;
791
792	vec.sfv_fd = ifd;
793	vec.sfv_flag = 0;
794	vec.sfv_off = offset;
795	vec.sfv_len = count;
796
797	res = sendfilev (ofd, &vec, 1, &sbytes);
798
799	if (res < 0 && sbytes)
800	res = sbytes;
801	}
802
803	# endif	712	#endif
804	#else
805	res = -1;
806	errno = ENOSYS;
807	#endif
808		713
809	if (res < 0	714	#if !_POSIX_MEMORY_PROTECTION
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	715	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
811	#if __solaris	716	# define PROT_NONE 0
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
813	#endif	721	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819		722
820	res = 0;	723	#define MMAP_MAGIC PERL_MAGIC_ext
821		724
822	while (count)	725	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
823	{	726	{
824	ssize_t cnt;	727	int old_errno = errno;
825		728	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	729	errno = old_errno;
827		730
828	if (cnt <= 0)	731	mg->mg_obj = 0; /* just in case */
829	{
830	if (cnt && !res) res = -1;
831	break;
832	}
833		732
834	cnt = write (ofd, aio_buf, cnt);	733	SvREADONLY_off (sv);
835		734
836	if (cnt <= 0)	735	if (SvPVX (sv) != mg->mg_ptr)
837	{	736	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
838	if (cnt && !res) res = -1;
839	break;
840	}
841		737
842	offset += cnt;	738	SvCUR_set (sv, 0);
843	res += cnt;	739	SvPVX (sv) = 0;
844	count -= cnt;	740	SvOK_off (sv);
845	}
846	}
847		741
848	return res;	742	return 0;
849	}	743	}
850		744
851	/* read a full directory */	745	static MGVTBL mmap_vtbl = {
852	static void scandir_ (aio_req req, worker *self)	746	0, 0, 0, 0, mmap_free
853	{	747	};
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	}
905	}
906
907	if (errno)
908	res = -1;
909
910	req->result = res;
911	}
912		748
913	/*****************************************************************************/	749	/*****************************************************************************/
914		750
915	static void *aio_proc (void *thr_arg)	751	static SV * get_cb (SV *cb_sv)
916	{	752	{
917	aio_req req;	753	SvGETMAGIC (cb_sv);
918	int type;	754	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
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	}	755	}
1065		756
1066	#define dREQ \	757	#define dREQ \
		758	SV *cb_cv; \
1067	aio_req req; \	759	aio_req req; \
1068	int req_pri = next_pri; \	760	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \	761	next_pri = EIO_PRI_DEFAULT; \
1070	\	762	\
1071	if (SvOK (callback) && !SvROK (callback)) \	763	cb_cv = get_cb (callback); \
1072	croak ("callback must be undef or of reference type"); \
1073	\	764	\
1074	Newz (0, req, 1, aio_cb); \	765	Newz (0, req, 1, eio_req); \
1075	if (!req) \	766	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \	767	croak ("out of memory during eio_req allocation"); \
1077	\	768	\
1078	req->callback = newSVsv (callback); \	769	req->callback = SvREFCNT_inc (cb_cv); \
1079	req->pri = req_pri	770	req->pri = req_pri
1080		771
1081	#define REQ_SEND \	772	#define REQ_SEND \
		773	PUTBACK; \
1082	req_send (req); \	774	req_submit (req); \
		775	SPAGAIN; \
1083	\	776	\
1084	if (GIMME_V != G_VOID) \	777	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));	778	XPUSHs (req_sv (req, aio_req_stash));
1086		779
1087	MODULE = IO::AIO PACKAGE = IO::AIO	780	MODULE = IO::AIO PACKAGE = IO::AIO
1088		781
1089	PROTOTYPES: ENABLE	782	PROTOTYPES: ENABLE
1090		783
1091	BOOT:	784	BOOT:
1092	{	785	{
		786	static const struct {
		787	const char *name;
		788	IV iv;
		789	} *civ, const_iv[] = {
		790	# define const_niv(name, value) { # name, (IV) value },
		791	# define const_iv(name) { # name, (IV) name },
		792	# define const_eio(name) { # name, (IV) EIO_ ## name },
		793	const_iv (EXDEV)
		794	const_iv (ENOSYS)
		795	const_iv (O_RDONLY)
		796	const_iv (O_WRONLY)
		797	const_iv (O_RDWR)
		798	const_iv (O_CREAT)
		799	const_iv (O_TRUNC)
		800	const_iv (O_EXCL)
		801	const_iv (O_APPEND)
		802
		803	const_iv (O_ASYNC)
		804	const_iv (O_DIRECT)
		805	const_iv (O_NOATIME)
		806
		807	const_iv (O_CLOEXEC)
		808	const_iv (O_NOCTTY)
		809	const_iv (O_NOFOLLOW)
		810	const_iv (O_NONBLOCK)
		811	const_iv (O_EXEC)
		812	const_iv (O_SEARCH)
		813	const_iv (O_DIRECTORY)
		814	const_iv (O_DSYNC)
		815	const_iv (O_RSYNC)
		816	const_iv (O_SYNC)
		817	const_iv (O_TTY_INIT)
		818
		819	const_iv (S_IFIFO)
		820	const_iv (S_IFCHR)
		821	const_iv (S_IFBLK)
		822	const_iv (S_IFLNK)
		823	const_iv (S_IFREG)
		824	const_iv (S_IFDIR)
		825	const_iv (S_IFWHT)
		826	const_iv (S_IFSOCK)
		827	const_iv (S_IFMT)
		828
		829	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		830	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		831	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		832	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		833	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		834	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		835
		836	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		837	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		838	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		839	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		840	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		841
		842	const_iv (ST_RDONLY)
		843	const_iv (ST_NOSUID)
		844	const_iv (ST_NODEV)
		845	const_iv (ST_NOEXEC)
		846	const_iv (ST_SYNCHRONOUS)
		847	const_iv (ST_MANDLOCK)
		848	const_iv (ST_WRITE)
		849	const_iv (ST_APPEND)
		850	const_iv (ST_IMMUTABLE)
		851	const_iv (ST_NOATIME)
		852	const_iv (ST_NODIRATIME)
		853	const_iv (ST_RELATIME)
		854
		855	const_iv (PROT_NONE)
		856	const_iv (PROT_EXEC)
		857	const_iv (PROT_READ)
		858	const_iv (PROT_WRITE)
		859
		860	/*const_iv (MAP_FIXED)*/
		861	const_iv (MAP_PRIVATE)
		862	const_iv (MAP_SHARED)
		863	const_iv (MAP_ANONYMOUS)
		864
		865	/* linuxish */
		866	const_iv (MAP_HUGETLB)
		867	const_iv (MAP_LOCKED)
		868	const_iv (MAP_NORESERVE)
		869	const_iv (MAP_POPULATE)
		870	const_iv (MAP_NONBLOCK)
		871
		872	const_eio (MCL_FUTURE)
		873	const_eio (MCL_CURRENT)
		874
		875	const_eio (MS_ASYNC)
		876	const_eio (MS_INVALIDATE)
		877	const_eio (MS_SYNC)
		878
		879	const_eio (MT_MODIFY)
		880
		881	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		882	const_eio (SYNC_FILE_RANGE_WRITE)
		883	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		884
		885	const_eio (FALLOC_FL_KEEP_SIZE)
		886
		887	const_eio (READDIR_DENTS)
		888	const_eio (READDIR_DIRS_FIRST)
		889	const_eio (READDIR_STAT_ORDER)
		890	const_eio (READDIR_FOUND_UNKNOWN)
		891
		892	const_eio (DT_UNKNOWN)
		893	const_eio (DT_FIFO)
		894	const_eio (DT_CHR)
		895	const_eio (DT_DIR)
		896	const_eio (DT_BLK)
		897	const_eio (DT_REG)
		898	const_eio (DT_LNK)
		899	const_eio (DT_SOCK)
		900	const_eio (DT_WHT)
		901	};
		902
1093	HV *stash = gv_stashpv ("IO::AIO", 1);	903	aio_stash = gv_stashpv ("IO::AIO" , 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	904	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	905	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097		906
		907	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		908	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		909
		910	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		911
1098	create_pipe ();	912	create_respipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101		913
		914	if (eio_init (want_poll, done_poll) < 0)
		915	croak ("IO::AIO: unable to initialise eio library");
		916
		917	/* atfork child called in fifo order, so before eio's handler */
		918	X_THREAD_ATFORK (0, 0, atfork_child);
		919	}
		920
1102	void	921	void
1103	min_parallel (nthreads)	922	max_poll_reqs (unsigned int nreqs)
1104	int nthreads
1105	PROTOTYPE: $	923	PROTOTYPE: $
		924	CODE:
		925	eio_set_max_poll_reqs (nreqs);
1106		926
1107	void	927	void
1108	max_parallel (nthreads)	928	max_poll_time (double nseconds)
1109	int nthreads
1110	PROTOTYPE: $	929	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:	930	CODE:
1117	RETVAL = max_outstanding;	931	eio_set_max_poll_time (nseconds);
		932
		933	void
		934	min_parallel (unsigned int nthreads)
		935	PROTOTYPE: $
		936	CODE:
		937	eio_set_min_parallel (nthreads);
		938
		939	void
		940	max_parallel (unsigned int nthreads)
		941	PROTOTYPE: $
		942	CODE:
		943	eio_set_max_parallel (nthreads);
		944
		945	void
		946	max_idle (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_max_idle (nthreads);
		950
		951	void
		952	idle_timeout (unsigned int seconds)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_idle_timeout (seconds);
		956
		957	void
		958	max_outstanding (unsigned int maxreqs)
		959	PROTOTYPE: $
		960	CODE:
1118	max_outstanding = nreqs;	961	max_outstanding = maxreqs;
1119		962
1120	void	963	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	964	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$
1127	PPCODE:	965	PPCODE:
1128	{	966	{
1129	dREQ;	967	dREQ;
1130		968
1131	req->type = REQ_OPEN;	969	req->type = EIO_OPEN;
1132	req->data = newSVsv (pathname);	970	req->sv1 = newSVsv (pathname);
1133	req->dataptr = SvPVbyte_nolen (req->data);	971	req->ptr1 = SvPVbyte_nolen (req->sv1);
1134	req->fd = flags;	972	req->int1 = flags;
1135	req->mode = mode;	973	req->int2 = mode;
1136		974
1137	REQ_SEND;	975	REQ_SEND;
1138	}	976	}
1139		977
1140	void	978	void
1141	aio_close (fh,callback=&PL_sv_undef)	979	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$
1145	ALIAS:	980	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC	981	aio_fsync = EIO_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC	982	aio_fdatasync = EIO_FDATASYNC
1149	PPCODE:	983	PPCODE:
1150	{	984	{
		985	int fd = s_fileno_croak (fh, 0);
1151	dREQ;	986	dREQ;
1152		987
1153	req->type = ix;	988	req->type = ix;
1154	req->fh = newSVsv (fh);	989	req->sv1 = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	990	req->int1 = fd;
1156		991
1157	REQ_SEND (req);	992	REQ_SEND (req);
1158	}	993	}
1159		994
1160	void	995	void
		996	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		997	PPCODE:
		998	{
		999	int fd = s_fileno_croak (fh, 0);
		1000	dREQ;
		1001
		1002	req->type = EIO_SYNC_FILE_RANGE;
		1003	req->sv1 = newSVsv (fh);
		1004	req->int1 = fd;
		1005	req->offs = offset;
		1006	req->size = nbytes;
		1007	req->int2 = flags;
		1008
		1009	REQ_SEND (req);
		1010	}
		1011
		1012	void
		1013	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_FALLOCATE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->int2 = mode;
		1023	req->offs = offset;
		1024	req->size = len;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1034	int fd = s_fileno_croak (fh, 0);
		1035	dREQ;
		1036
		1037	if (close_pipe < 0)
		1038	{
		1039	int pipefd [2];
		1040
		1041	if (pipe (pipefd) < 0
		1042	|| close (pipefd [1]) < 0
		1043	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1044	abort (); /*D*/
		1045
		1046	close_pipe = pipefd [0];
		1047	}
		1048
		1049	req->type = EIO_DUP2;
		1050	req->int1 = close_pipe;
		1051	req->sv2 = newSVsv (fh);
		1052	req->int2 = fd;
		1053
		1054	REQ_SEND (req);
		1055	}
		1056
		1057	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1058	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:	1059	ALIAS:
1169	aio_read = REQ_READ	1060	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	1061	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$
1172	PPCODE:	1062	PPCODE:
1173	{	1063	{
1174	aio_req req;
1175	STRLEN svlen;	1064	STRLEN svlen;
		1065	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	1066	char *svptr = SvPVbyte (data, svlen);
1177		1067	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		1068
1181	if (dataoffset < 0)	1069	if (dataoffset < 0)
1182	dataoffset += svlen;	1070	dataoffset += svlen;
1183		1071
1184	if (dataoffset < 0 || dataoffset > svlen)	1072	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1073	croak ("dataoffset outside of data scalar");
1186		1074
1187	if (ix == REQ_WRITE)	1075	if (ix == EIO_WRITE)
1188	{	1076	{
1189	/* write: check length and adjust. */	1077	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1078	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1079	len = svlen - dataoffset;
1192	}	1080	}
1193	else	1081	else
1194	{	1082	{
1195	/* read: grow scalar as necessary */	1083	/* read: check type and grow scalar as necessary */
		1084	SvUPGRADE (data, SVt_PV);
1196	svptr = SvGROW (data, length + dataoffset);	1085	svptr = SvGROW (data, len + dataoffset + 1);
1197	}	1086	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		1087
1202	{	1088	{
1203	dREQ;	1089	dREQ;
1204		1090
1205	req->type = ix;	1091	req->type = ix;
1206	req->fh = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1093	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1095	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1096	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1097	req->ptr2 = (char *)svptr + dataoffset;
		1098	req->stroffset = dataoffset;
1213		1099
1214	if (!SvREADONLY (data))	1100	if (!SvREADONLY (data))
1215	{	1101	{
1216	SvREADONLY_on (data);	1102	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1103	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1104	}
1219		1105
1220	REQ_SEND;	1106	REQ_SEND;
1221	}	1107	}
1222	}	1108	}
1223		1109
1224	void	1110	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1111	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1226	SV * out_fh	1112	ALIAS:
1227	SV * in_fh	1113	aio_readlink = EIO_READLINK
1228	UV in_offset	1114	aio_realpath = EIO_REALPATH
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$
1232	PPCODE:	1115	PPCODE:
1233	{	1116	{
		1117	SV *data;
		1118	dREQ;
		1119
		1120	req->type = ix;
		1121	req->sv1 = newSVsv (path);
		1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1123
		1124	REQ_SEND;
		1125	}
		1126
		1127	void
		1128	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1129	PPCODE:
		1130	{
		1131	int ifd = s_fileno_croak (in_fh , 0);
		1132	int ofd = s_fileno_croak (out_fh, 1);
1234	dREQ;	1133	dREQ;
1235		1134
1236	req->type = REQ_SENDFILE;	1135	req->type = EIO_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1136	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1137	req->int1 = ofd;
1239	req->fh2 = newSVsv (in_fh);	1138	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1139	req->int2 = ifd;
1241	req->offset = in_offset;	1140	req->offs = in_offset;
1242	req->length = length;	1141	req->size = length;
1243		1142
1244	REQ_SEND;	1143	REQ_SEND;
1245	}	1144	}
1246		1145
1247	void	1146	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1147	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$
1254	PPCODE:	1148	PPCODE:
1255	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1256	dREQ;	1151	dREQ;
1257		1152
1258	req->type = REQ_READAHEAD;	1153	req->type = EIO_READAHEAD;
1259	req->fh = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1261	req->offset = offset;	1156	req->offs = offset;
1262	req->length = length;	1157	req->size = length;
1263		1158
1264	REQ_SEND;	1159	REQ_SEND;
1265	}	1160	}
1266		1161
1267	void	1162	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1163	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	1164	ALIAS:
1272	aio_stat = REQ_STAT	1165	aio_stat = EIO_STAT
1273	aio_lstat = REQ_LSTAT	1166	aio_lstat = EIO_LSTAT
		1167	aio_statvfs = EIO_STATVFS
1274	PPCODE:	1168	PPCODE:
1275	{	1169	{
1276	dREQ;	1170	dREQ;
1277		1171
1278	New (0, req->statdata, 1, Stat_t);	1172	req->sv1 = newSVsv (fh_or_path);
1279	if (!req->statdata)
1280	{
1281	req_free (req);
1282	croak ("out of memory during aio_req->statdata allocation");
1283	}
1284		1173
1285	if (SvPOK (fh_or_path))	1174	if (SvPOK (req->sv1))
1286	{	1175	{
1287	req->type = ix;	1176	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);	1177	req->ptr1 = SvPVbyte_nolen (req->sv1);
1290	}	1178	}
1291	else	1179	else
1292	{	1180	{
1293	req->type = REQ_FSTAT;	1181	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1294	req->fh = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1182	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}	1183	}
1297		1184
1298	REQ_SEND;	1185	REQ_SEND;
1299	}	1186	}
1300		1187
		1188	UV
		1189	major (UV dev)
		1190	ALIAS:
		1191	minor = 1
		1192	CODE:
		1193	RETVAL = ix ? major (dev) : minor (dev);
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	UV
		1198	makedev (UV maj, UV min)
		1199	CODE:
		1200	RETVAL = makedev (maj, min);
		1201	OUTPUT:
		1202	RETVAL
		1203
1301	void	1204	void
		1205	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
		1208	dREQ;
		1209
		1210	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1211	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1212	req->sv1 = newSVsv (fh_or_path);
		1213
		1214	if (SvPOK (req->sv1))
		1215	{
		1216	req->type = EIO_UTIME;
		1217	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1218	}
		1219	else
		1220	{
		1221	req->type = EIO_FUTIME;
		1222	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1223	}
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	dREQ;
		1233
		1234	req->sv1 = newSVsv (fh_or_path);
		1235	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1236
		1237	if (SvPOK (req->sv1))
		1238	{
		1239	req->type = EIO_TRUNCATE;
		1240	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1241	}
		1242	else
		1243	{
		1244	req->type = EIO_FTRUNCATE;
		1245	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1246	}
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_chmod = EIO_CHMOD
		1255	aio_mkdir = EIO_MKDIR
		1256	PPCODE:
		1257	{
		1258	dREQ;
		1259
		1260	req->int2 = mode;
		1261	req->sv1 = newSVsv (fh_or_path);
		1262
		1263	if (SvPOK (req->sv1))
		1264	{
		1265	req->type = ix;
		1266	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1267	}
		1268	else
		1269	{
		1270	req->type = EIO_FCHMOD;
		1271	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1272	}
		1273
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	dREQ;
		1282
		1283	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1284	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1285	req->sv1 = newSVsv (fh_or_path);
		1286
		1287	if (SvPOK (req->sv1))
		1288	{
		1289	req->type = EIO_CHOWN;
		1290	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1291	}
		1292	else
		1293	{
		1294	req->type = EIO_FCHOWN;
		1295	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1296	}
		1297
		1298	REQ_SEND;
		1299	}
		1300
		1301	void
		1302	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1303	PPCODE:
		1304	{
		1305	dREQ;
		1306
		1307	req->type = EIO_READDIR;
		1308	req->sv1 = newSVsv (pathname);
		1309	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1310	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1311
		1312	if (flags & EIO_READDIR_DENTS)
		1313	req->int1 |= EIO_READDIR_CUSTOM2;
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1319	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	1320	ALIAS:
1306	aio_unlink = REQ_UNLINK	1321	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	1322	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	1323	aio_readdir = EIO_READDIR
1309	PPCODE:	1324	PPCODE:
1310	{	1325	{
1311	dREQ;	1326	dREQ;
1312		1327
1313	req->type = ix;	1328	req->type = ix;
1314	req->data = newSVsv (pathname);	1329	req->sv1 = newSVsv (pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
1316		1331
1317	REQ_SEND;	1332	REQ_SEND;
1318	}	1333	}
1319		1334
1320	void	1335	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1336	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:	1337	ALIAS:
1326	aio_link = REQ_LINK	1338	aio_link = EIO_LINK
1327	aio_symlink = REQ_SYMLINK	1339	aio_symlink = EIO_SYMLINK
1328	aio_rename = REQ_RENAME	1340	aio_rename = EIO_RENAME
1329	PPCODE:	1341	PPCODE:
1330	{	1342	{
1331	dREQ;	1343	dREQ;
1332		1344
1333	req->type = ix;	1345	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1346	req->sv1 = newSVsv (oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1347	req->ptr1 = SvPVbyte_nolen (req->sv1);
1336	req->data = newSVsv (newpath);	1348	req->sv2 = newSVsv (newpath);
1337	req->dataptr = SvPVbyte_nolen (req->data);	1349	req->ptr2 = SvPVbyte_nolen (req->sv2);
1338		1350
1339	REQ_SEND;	1351	REQ_SEND;
1340	}	1352	}
1341		1353
1342	void	1354	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1355	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1356	PPCODE:
1347	{	1357	{
1348	dREQ;	1358	dREQ;
1349		1359
1350	req->type = REQ_BUSY;	1360	req->type = EIO_MKNOD;
1351	req->fd = delay < 0. ? 0 : delay;	1361	req->sv1 = newSVsv (pathname);
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1362	req->ptr1 = SvPVbyte_nolen (req->sv1);
1353		1363	req->int2 = (mode_t)mode;
		1364	req->offs = dev;
		1365
1354	REQ_SEND;	1366	REQ_SEND;
1355	}	1367	}
1356		1368
1357	void	1369	void
1358	aio_group (callback=&PL_sv_undef)	1370	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1359	SV * callback	1371	ALIAS:
1360	PROTOTYPE: ;$	1372	aio_mtouch = EIO_MTOUCH
		1373	aio_msync = EIO_MSYNC
1361	PPCODE:	1374	PPCODE:
1362	{	1375	{
		1376	STRLEN svlen;
		1377	char *svptr = SvPVbyte (data, svlen);
		1378	UV len = SvUV (length);
		1379
		1380	if (offset < 0)
		1381	offset += svlen;
		1382
		1383	if (offset < 0 || offset > svlen)
		1384	croak ("offset outside of scalar");
		1385
		1386	if (!SvOK (length) || len + offset > svlen)
		1387	len = svlen - offset;
		1388
		1389	{
		1390	dREQ;
		1391
		1392	req->type = ix;
		1393	req->sv2 = SvREFCNT_inc (data);
		1394	req->ptr2 = (char *)svptr + offset;
		1395	req->size = len;
		1396	req->int1 = flags;
		1397
		1398	REQ_SEND;
		1399	}
		1400	}
		1401
		1402	void
		1403	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	STRLEN svlen;
		1407	char *svptr = SvPVbyte (data, svlen);
		1408	UV len = SvUV (length);
		1409
		1410	if (offset < 0)
		1411	offset += svlen;
		1412
		1413	if (offset < 0 || offset > svlen)
		1414	croak ("offset outside of scalar");
		1415
		1416	if (!SvOK (length) || len + offset > svlen)
		1417	len = svlen - offset;
		1418
		1419	{
		1420	dREQ;
		1421
		1422	req->type = EIO_MLOCK;
		1423	req->sv2 = SvREFCNT_inc (data);
		1424	req->ptr2 = (char *)svptr + offset;
		1425	req->size = len;
		1426
		1427	REQ_SEND;
		1428	}
		1429	}
		1430
		1431	void
		1432	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_MLOCKALL;
		1438	req->int1 = flags;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
		1444	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1445	PPCODE:
		1446	{
1363	dREQ;	1447	dREQ;
1364		1448
		1449	req->type = EIO_BUSY;
		1450	req->nv1 = delay < 0. ? 0. : delay;
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
		1456	aio_group (SV *callback=&PL_sv_undef)
		1457	PPCODE:
		1458	{
		1459	dREQ;
		1460
1365	req->type = REQ_GROUP;	1461	req->type = EIO_GROUP;
		1462
1366	req_send (req);	1463	req_submit (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1464	XPUSHs (req_sv (req, aio_grp_stash));
1369	}	1465	}
1370		1466
1371	void	1467	void
1372	aio_nop (callback=&PL_sv_undef)	1468	aio_nop (SV *callback=&PL_sv_undef)
1373	SV * callback	1469	ALIAS:
		1470	aio_nop = EIO_NOP
		1471	aio_sync = EIO_SYNC
1374	PPCODE:	1472	PPCODE:
1375	{	1473	{
1376	dREQ;	1474	dREQ;
1377		1475
1378	req->type = REQ_NOP;	1476	req->type = ix;
1379		1477
1380	REQ_SEND;	1478	REQ_SEND;
1381	}	1479	}
1382		1480
1383	void	1481	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1482	aioreq_pri (int pri = 0)
1385	CODE:	1483	CODE:
		1484	RETVAL = next_pri;
		1485	if (items > 0)
		1486	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1487	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1488	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1489	next_pri = pri;
		1490	}
		1491	OUTPUT:
		1492	RETVAL
1389		1493
1390	void	1494	void
1391	aioreq_nice (int nice = 0)	1495	aioreq_nice (int nice = 0)
1392	CODE:	1496	CODE:
1393	nice = next_pri - nice;	1497	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1498	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1499	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1500	next_pri = nice;
1397		1501
1398	void	1502	void
1399	flush ()	1503	flush ()
1400	PROTOTYPE:
1401	CODE:	1504	CODE:
1402	while (nreqs)	1505	while (eio_nreqs ())
1403	{	1506	{
1404	poll_wait ();	1507	poll_wait ();
1405	poll_cb ();	1508	poll_cb ();
1406	}	1509	}
1407		1510
1408	void
1409	poll()
1410	PROTOTYPE:
1411	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();
1415	poll_cb ();
1416	}
1417
1418	int	1511	int
1419	poll_fileno()	1512	poll ()
1420	PROTOTYPE:
1421	CODE:	1513	CODE:
1422	RETVAL = respipe [0];	1514	poll_wait ();
1423	OUTPUT:
1424	RETVAL
1425
1426	int
1427	poll_cb(...)
1428	PROTOTYPE:
1429	CODE:
1430	RETVAL = poll_cb ();	1515	RETVAL = poll_cb ();
1431	OUTPUT:	1516	OUTPUT:
1432	RETVAL	1517	RETVAL
1433		1518
1434	void
1435	poll_wait()
1436	PROTOTYPE:
1437	CODE:
1438	if (nreqs)
1439	poll_wait ();
1440
1441	int	1519	int
1442	nreqs()	1520	poll_fileno ()
1443	PROTOTYPE:
1444	CODE:	1521	CODE:
1445	RETVAL = nreqs;	1522	RETVAL = s_epipe_fd (&respipe);
1446	OUTPUT:	1523	OUTPUT:
1447	RETVAL	1524	RETVAL
1448		1525
		1526	int
		1527	poll_cb (...)
		1528	PROTOTYPE:
		1529	CODE:
		1530	RETVAL = poll_cb ();
		1531	OUTPUT:
		1532	RETVAL
		1533
		1534	void
		1535	poll_wait ()
		1536	CODE:
		1537	poll_wait ();
		1538
		1539	int
		1540	nreqs ()
		1541	CODE:
		1542	RETVAL = eio_nreqs ();
		1543	OUTPUT:
		1544	RETVAL
		1545
		1546	int
		1547	nready ()
		1548	CODE:
		1549	RETVAL = eio_nready ();
		1550	OUTPUT:
		1551	RETVAL
		1552
		1553	int
		1554	npending ()
		1555	CODE:
		1556	RETVAL = eio_npending ();
		1557	OUTPUT:
		1558	RETVAL
		1559
		1560	int
		1561	nthreads ()
		1562	CODE:
		1563	RETVAL = eio_nthreads ();
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	int
		1568	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1569	CODE:
		1570	RETVAL = posix_fadvise (fh, offset, length, advice);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	ssize_t
		1575	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1576	CODE:
		1577	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1583	PPCODE:
		1584	sv_unmagic (scalar, MMAP_MAGIC);
		1585	{
		1586	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1587	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1588	if (addr == (void *)-1)
		1589	XSRETURN_NO;
		1590
		1591	sv_force_normal (scalar);
		1592
		1593	/* we store the length in mg_obj, as namlen is I32 :/ */
		1594	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1595	->mg_obj = (SV *)length;
		1596
		1597	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1598
		1599	if (!(prot & PROT_WRITE))
		1600	SvREADONLY_on (scalar);
		1601
		1602	if (SvLEN (scalar))
		1603	Safefree (SvPVX (scalar));
		1604
		1605	SvPVX (scalar) = (char *)addr;
		1606	SvCUR_set (scalar, length);
		1607	SvLEN_set (scalar, 0);
		1608	SvPOK_only (scalar);
		1609
		1610	XSRETURN_YES;
		1611	}
		1612
		1613	void
		1614	munmap (SV *scalar)
		1615	CODE:
		1616	sv_unmagic (scalar, MMAP_MAGIC);
		1617
		1618	int
		1619	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1620	ALIAS:
		1621	mprotect = 1
		1622	CODE:
		1623	{
		1624	STRLEN svlen;
		1625	void *addr = SvPVbyte (scalar, svlen);
		1626	size_t len = SvUV (length);
		1627
		1628	if (offset < 0)
		1629	offset += svlen;
		1630
		1631	if (offset < 0 || offset > svlen)
		1632	croak ("offset outside of scalar");
		1633
		1634	if (!SvOK (length) || len + offset > svlen)
		1635	len = svlen - offset;
		1636
		1637	addr = (void *)(((intptr_t)addr) + offset);
		1638	eio_page_align (&addr, &len);
		1639
		1640	switch (ix)
		1641	{
		1642	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1643	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1644	}
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1651	CODE:
		1652	{
		1653	STRLEN svlen;
		1654	void *addr = SvPVbyte (scalar, svlen);
		1655	size_t len = SvUV (length);
		1656
		1657	if (offset < 0)
		1658	offset += svlen;
		1659
		1660	if (offset < 0 || offset > svlen)
		1661	croak ("offset outside of scalar");
		1662
		1663	if (!SvOK (length) || len + offset > svlen)
		1664	len = svlen - offset;
		1665
		1666	addr = (void *)(((intptr_t)addr) + offset);
		1667	eio_page_align (&addr, &len);
		1668	#if _POSIX_MEMLOCK_RANGE
		1669	RETVAL = munlock (addr, len);
		1670	#else
		1671	RETVAL = ((errno = ENOSYS), -1);
		1672	#endif
		1673	}
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	munlockall ()
		1679	CODE:
		1680	#if _POSIX_MEMLOCK
		1681	munlockall ();
		1682	#else
		1683	RETVAL = -1;
		1684	errno = ENOSYS;
		1685	#endif
		1686	OUTPUT:
		1687	RETVAL
		1688
		1689	void _on_next_submit (SV *cb)
		1690	CODE:
		1691	SvREFCNT_dec (on_next_submit);
		1692	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1693
1449	PROTOTYPES: DISABLE	1694	PROTOTYPES: DISABLE
1450		1695
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1696	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1697
1453	void	1698	void
1454	cancel (aio_req_ornot req)	1699	cancel (aio_req_ornot req)
1455	CODE:	1700	CODE:
1456	req_cancel (req);	1701	eio_cancel (req);
1457		1702
1458	void	1703	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1704	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460	CODE:	1705	PPCODE:
		1706	{
		1707	if (GIMME_V != G_VOID)
		1708	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1709
		1710	if (items > 1)
		1711	{
		1712	SV *cb_cv =get_cb (callback);
		1713
1461	SvREFCNT_dec (req->callback);	1714	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	1715	req->callback = SvREFCNT_inc (cb_cv);
		1716	}
		1717	}
1463		1718
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1719	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		1720
1466	void	1721	void
1467	add (aio_req grp, ...)	1722	add (aio_req grp, ...)
1468	PPCODE:	1723	PPCODE:
1469	{	1724	{
1470	int i;	1725	int i;
1471	aio_req req;
1472		1726
1473	if (grp->fd == 2)	1727	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1728	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		1729
1476	for (i = 1; i < items; ++i )	1730	for (i = 1; i < items; ++i )
1477	{	1731	{
		1732	aio_req req;
		1733
1478	if (GIMME_V != G_VOID)	1734	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1735	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		1736
1481	req = SvAIO_REQ (ST (i));	1737	req = SvAIO_REQ (ST (i));
1482		1738
1483	if (req)	1739	if (req)
1484	{	1740	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	}	1741	}
1497	}	1742	}
		1743
		1744	void
		1745	cancel_subs (aio_req_ornot req)
		1746	CODE:
		1747	req_cancel_subs (req);
1498		1748
1499	void	1749	void
1500	result (aio_req grp, ...)	1750	result (aio_req grp, ...)
1501	CODE:	1751	CODE:
1502	{	1752	{
1503	int i;	1753	int i;
		1754	AV *av;
		1755
		1756	grp->errorno = errno;
		1757
1504	AV *av = newAV ();	1758	av = newAV ();
		1759	av_extend (av, items - 1);
1505		1760
1506	for (i = 1; i < items; ++i )	1761	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1762	av_push (av, newSVsv (ST (i)));
1508		1763
1509	SvREFCNT_dec (grp->data);	1764	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1765	grp->sv1 = (SV *)av;
1511	}	1766	}
		1767
		1768	void
		1769	errno (aio_req grp, int errorno = errno)
		1770	CODE:
		1771	grp->errorno = errorno;
1512		1772
1513	void	1773	void
1514	limit (aio_req grp, int limit)	1774	limit (aio_req grp, int limit)
1515	CODE:	1775	CODE:
1516	grp->fd2 = limit;	1776	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		1777
1519	void	1778	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1779	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1780	CODE:
1522	{	1781	{
1523	SvREFCNT_dec (grp->fh2);	1782	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1783	grp->sv2 = newSVsv (callback);
		1784	grp->feed = aio_grp_feed;
1525		1785
1526	if (grp->fd2 <= 0)	1786	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1787	grp->int2 = 2;
1528		1788
1529	aio_grp_feed (grp);	1789	eio_grp_limit (grp, grp->int2);
1530	}	1790	}
1531		1791

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