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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 1.183 by root, Tue Jul 5 09:24:11 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>
		16	#include <sys/statvfs.h>
26	#include <limits.h>	17	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	18	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	19	#include <sched.h>
31		20
32	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>	22	# include <sys/mman.h>
35	# elif __freebsd	23	#endif
36	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
37	# include <sys/uio.h>	68	# include <sys/time.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
42	# else	287	# else
43	# error sendfile support requested but not available	288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	289	# endif
45	#endif	290	#endif
46		291	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	292	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	293	#endif
51		294	#ifndef MAP_LOCKED
52	#if __ia64	295	# 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	296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
59		306
60	/* buffer size for various temporary buffers */	307	#ifndef makedev
61	#define AIO_BUFSIZE 65536	308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
62		316
63	#define dBUF \	317	#ifndef PAGESIZE
64	char *aio_buf; \	318	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	319	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	320
67	UNLOCK (wrklock); \	321	static int req_invoke (eio_req *req);
68	if (!aio_buf) \	322	#define EIO_FINISH(req) req_invoke (req)
69	return -1;	323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
70		325
71	enum {	326	enum {
72	REQ_QUIT,	327	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	};	328	};
84		329
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		331
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;	332	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
119		334
120	enum {	335	static SV *on_next_submit;
121	PRI_MIN = -4,	336	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;	337	static int max_outstanding;
134	static int respipe [2];
135		338
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	339	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		340
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	341	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);	342	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
245		355
246	/* must be called at most once */	356	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
248	{	358	{
249	if (!req->self)	359	if (!req->self)
250	{	360	{
251	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253	}	363	}
254		364
255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256	}	366	}
257		367
258	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
259	{	369	{
260	MAGIC *mg;	370	MAGIC *mg;
261		371
262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
263	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
264		377
265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266		379
267	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	381	}
269		382
270	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
271	{	384	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	385	if (grp->sv2 && SvOK (grp->sv2))
273	{	386	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	387	dSP;
279		388
280	ENTER;	389	ENTER;
281	SAVETMPS;	390	SAVETMPS;
282	PUSHMARK (SP);	391	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
284	PUTBACK;	393	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	395	SPAGAIN;
287	FREETMPS;	396	FREETMPS;
288	LEAVE;	397	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	}	398	}
299	}	399	}
300		400
301	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
302	{	402	{
303	--grp->length;	403	eio_submit (req);
304		404
305	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	406	{
311	req_invoke (grp);	407	dSP;
312	req_free (grp);	408	SV *cb = sv_2mortal (on_next_submit);
		409
		410	on_next_submit = 0;
		411
		412	PUSHMARK (SP);
		413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
313	}	415	}
314	}	416	}
315		417
316	static void poll_wait ()	418	static int req_invoke (eio_req *req)
317	{	419	{
318	fd_set rfd;	420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
319		422
320	while (nreqs)	423	if (!EIO_CANCELLED (req) && req->callback)
321	{	424	{
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;	425	dSP;
344		426	static SV *sv_result_cache; /* caches the result integer SV */
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	427	SV *sv_result;
346	{
347	errno = req->errorno;
348		428
349	ENTER;	429	ENTER;
350	SAVETMPS;	430	SAVETMPS;
351	PUSHMARK (SP);	431	PUSHMARK (SP);
352	EXTEND (SP, 1);	432	EXTEND (SP, 1);
353		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
354	switch (req->type)	447	switch (req->type)
355	{	448	{
356	case REQ_READDIR:	449	case EIO_READDIR:
357	{	450	{
358	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
359		452
360	if (req->result >= 0)	453	if (req->result >= 0)
361	{	454	{
362	int i;	455	int i;
363	char *buf = req->data2ptr;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	458	AV *av = newAV ();
365		459
366	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
367		461
368	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
369	{	463	{
370	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
372	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
373	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
374	}	498	}
375		499
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	501	}
378		502
379	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
380	}	507	}
381	break;	508	break;
382		509
383	case REQ_OPEN:	510	case EIO_OPEN:
384	{	511	{
385	/* convert fd to fh */	512	/* convert fd to fh */
386	SV *fh;	513	SV *fh = &PL_sv_undef;
387		514
388	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
389	PUTBACK;	516	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
391	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
392		524
393	fh = SvREFCNT_inc (POPs);	525	symlen = snprintf (
		526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
394		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
395	PUSHMARK (SP);	537	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	538	}
398	break;	539	break;
399		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
400	case REQ_GROUP:	571	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	572	req->int1 = 2; /* mark group as finished */
402		573
403	if (req->data)	574	if (req->sv1)
404	{	575	{
405	int i;	576	int i;
406	AV *av = (AV *)req->data;	577	AV *av = (AV *)req->sv1;
407		578
408	EXTEND (SP, AvFILL (av) + 1);	579	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	580	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	581	PUSHs (*av_fetch (av, i, 0));
411	}	582	}
412	break;	583	break;
413		584
414	case REQ_NOP:	585	case EIO_NOP:
415	case REQ_BUSY:	586	case EIO_BUSY:
416	break;	587	break;
417		588
		589	case EIO_READLINK:
		590	case EIO_REALPATH:
		591	if (req->result > 0)
		592	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		593	break;
		594
		595	case EIO_STAT:
		596	case EIO_LSTAT:
		597	case EIO_FSTAT:
		598	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		599	PL_laststatval = req->result;
		600	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		601	PUSHs (sv_result);
		602	break;
		603
		604	case EIO_READ:
		605	{
		606	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		607	*SvEND (req->sv2) = 0;
		608	SvPOK_only (req->sv2);
		609	SvSETMAGIC (req->sv2);
		610	PUSHs (sv_result);
		611	}
		612	break;
		613
		614	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		615	if (req->result > 0)
		616	SvIV_set (sv_result, 0);
		617	/* FALLTHROUGH */
		618
418	default:	619	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	620	PUSHs (sv_result);
420	break;	621	break;
421	}	622	}
422		623
		624	errno = req->errorno;
423		625
424	PUTBACK;	626	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	627	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	628	SPAGAIN;
		629
		630	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		631	SvREFCNT_dec (sv_result);
		632	else
		633	sv_result_cache = sv_result;
427		634
428	FREETMPS;	635	FREETMPS;
429	LEAVE;	636	LEAVE;
		637
		638	PUTBACK;
430	}	639	}
431		640
432	if (req->grp)	641	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	}	642	}
452		643
453	static void req_free (aio_req req)	644	static void req_destroy (aio_req req)
454	{	645	{
455	if (req->self)	646	if (req->self)
456	{	647	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	648	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	649	SvREFCNT_dec (req->self);
459	}	650	}
460		651
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	652	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	653	SvREFCNT_dec (req->sv2);
464	SvREFCNT_dec (req->callback);	654	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469		655
470	Safefree (req);	656	Safefree (req);
471	}	657	}
472		658
473	static void req_cancel (aio_req req)	659	static void req_cancel_subs (aio_req grp)
474	{	660	{
475	req->flags |= FLAG_CANCELLED;	661	aio_req sub;
476		662
477	if (req->type == REQ_GROUP)	663	if (grp->type != EIO_GROUP)
		664	return;
		665
		666	SvREFCNT_dec (grp->sv2);
		667	grp->sv2 = 0;
		668
		669	eio_grp_cancel (grp);
		670	}
		671
		672	static void
		673	create_respipe (void)
		674	{
		675	if (s_epipe_renew (&respipe))
		676	croak ("IO::AIO: unable to initialize result pipe");
		677	}
		678
		679	static void poll_wait (void)
		680	{
		681	while (eio_nreqs ())
478	{	682	{
479	aio_req sub;	683	int size;
480		684
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	685	X_LOCK (reslock);
482	req_cancel (sub);	686	size = res_queue.size;
		687	X_UNLOCK (reslock);
		688
		689	if (size)
		690	return;
		691
		692	etp_maybe_start_thread ();
		693
		694	s_epipe_wait (&respipe);
483	}	695	}
484	}	696	}
485		697
486	static int poll_cb ()	698	static int poll_cb (void)
487	{	699	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	700	for (;;)
494	{	701	{
495	LOCK (reslock);	702	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		703
498	if (req)	704	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;	705	croak (0);
513		706
514	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
515		709
516	if (req->type == REQ_QUIT)	710	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	}	711	}
545
546	return count;
547	}	712	}
548		713
549	static void *aio_proc(void *arg);
550
551	static void start_thread (void)	714	static void atfork_child (void)
552	{	715	{
553	worker *wrk = calloc (1, sizeof (worker));	716	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	}	717	}
658		718
659	/*****************************************************************************/	719	/*****************************************************************************/
660	/* work around various missing functions */
661		720
662	#if !HAVE_PREADWRITE	721	#if !_POSIX_MAPPED_FILES
663	# define pread aio_pread	722	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
664	# define pwrite aio_pwrite	723	# 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	724	#endif
804	#else
805	res = -1;
806	errno = ENOSYS;
807	#endif
808		725
809	if (res < 0	726	#if !_POSIX_MEMORY_PROTECTION
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	727	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
811	#if __solaris	728	# define PROT_NONE 0
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	729	# define PROT_WRITE 0
		730	# define MAP_PRIVATE 0
		731	# define MAP_SHARED 0
		732	# define MAP_FIXED 0
813	#endif	733	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819		734
820	res = 0;	735	#define MMAP_MAGIC PERL_MAGIC_ext
821		736
822	while (count)	737	static int
823	{	738	mmap_free (pTHX_ SV *sv, MAGIC *mg)
824	ssize_t cnt;	739	{
825		740	int old_errno = errno;
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	741	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		742	errno = old_errno;
827		743
828	if (cnt <= 0)	744	mg->mg_obj = 0; /* just in case */
829	{
830	if (cnt && !res) res = -1;
831	break;
832	}
833		745
834	cnt = write (ofd, aio_buf, cnt);	746	SvREADONLY_off (sv);
835		747
836	if (cnt <= 0)	748	if (SvPVX (sv) != mg->mg_ptr)
837	{	749	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
838	if (cnt && !res) res = -1;
839	break;
840	}
841		750
842	offset += cnt;	751	SvCUR_set (sv, 0);
843	res += cnt;	752	SvPVX (sv) = 0;
844	count -= cnt;	753	SvOK_off (sv);
845	}
846	}
847		754
848	return res;	755	return 0;
849	}	756	}
850		757
851	/* read a full directory */	758	static MGVTBL mmap_vtbl = {
852	static void scandir_ (aio_req req, worker *self)	759	0, 0, 0, 0, mmap_free
853	{	760	};
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		761
913	/*****************************************************************************/	762	/*****************************************************************************/
914		763
915	static void *aio_proc (void *thr_arg)	764	static SV *
		765	get_cb (SV *cb_sv)
916	{	766	{
917	aio_req req;	767	SvGETMAGIC (cb_sv);
918	int type;	768	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	}	769	}
1065		770
1066	#define dREQ \	771	#define dREQ \
		772	SV *cb_cv; \
1067	aio_req req; \	773	aio_req req; \
1068	int req_pri = next_pri; \	774	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \	775	next_pri = EIO_PRI_DEFAULT; \
1070	\	776	\
1071	if (SvOK (callback) && !SvROK (callback)) \	777	cb_cv = get_cb (callback); \
1072	croak ("callback must be undef or of reference type"); \
1073	\	778	\
1074	Newz (0, req, 1, aio_cb); \	779	Newz (0, req, 1, eio_req); \
1075	if (!req) \	780	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \	781	croak ("out of memory during eio_req allocation"); \
1077	\	782	\
1078	req->callback = newSVsv (callback); \	783	req->callback = SvREFCNT_inc (cb_cv); \
1079	req->pri = req_pri	784	req->pri = req_pri
1080		785
1081	#define REQ_SEND \	786	#define REQ_SEND \
		787	PUTBACK; \
1082	req_send (req); \	788	req_submit (req); \
		789	SPAGAIN; \
1083	\	790	\
1084	if (GIMME_V != G_VOID) \	791	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));	792	XPUSHs (req_sv (req, aio_req_stash));
1086		793
1087	MODULE = IO::AIO PACKAGE = IO::AIO	794	MODULE = IO::AIO PACKAGE = IO::AIO
1088		795
1089	PROTOTYPES: ENABLE	796	PROTOTYPES: ENABLE
1090		797
1091	BOOT:	798	BOOT:
1092	{	799	{
		800	static const struct {
		801	const char *name;
		802	IV iv;
		803	} *civ, const_iv[] = {
		804	# define const_niv(name, value) { # name, (IV) value },
		805	# define const_iv(name) { # name, (IV) name },
		806	# define const_eio(name) { # name, (IV) EIO_ ## name },
		807	const_iv (EXDEV)
		808	const_iv (ENOSYS)
		809	const_iv (O_RDONLY)
		810	const_iv (O_WRONLY)
		811	const_iv (O_RDWR)
		812	const_iv (O_CREAT)
		813	const_iv (O_TRUNC)
		814	const_iv (O_EXCL)
		815	const_iv (O_APPEND)
		816
		817	const_iv (O_ASYNC)
		818	const_iv (O_DIRECT)
		819	const_iv (O_NOATIME)
		820
		821	const_iv (O_CLOEXEC)
		822	const_iv (O_NOCTTY)
		823	const_iv (O_NOFOLLOW)
		824	const_iv (O_NONBLOCK)
		825	const_iv (O_EXEC)
		826	const_iv (O_SEARCH)
		827	const_iv (O_DIRECTORY)
		828	const_iv (O_DSYNC)
		829	const_iv (O_RSYNC)
		830	const_iv (O_SYNC)
		831	const_iv (O_TTY_INIT)
		832
		833	const_iv (S_IFIFO)
		834	const_iv (S_IFCHR)
		835	const_iv (S_IFBLK)
		836	const_iv (S_IFLNK)
		837	const_iv (S_IFREG)
		838	const_iv (S_IFDIR)
		839	const_iv (S_IFWHT)
		840	const_iv (S_IFSOCK)
		841	const_iv (S_IFMT)
		842
		843	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		844	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		845	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		846	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		847	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		848	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		849
		850	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		851	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		852	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		853	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		854	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		855
		856	const_iv (ST_RDONLY)
		857	const_iv (ST_NOSUID)
		858	const_iv (ST_NODEV)
		859	const_iv (ST_NOEXEC)
		860	const_iv (ST_SYNCHRONOUS)
		861	const_iv (ST_MANDLOCK)
		862	const_iv (ST_WRITE)
		863	const_iv (ST_APPEND)
		864	const_iv (ST_IMMUTABLE)
		865	const_iv (ST_NOATIME)
		866	const_iv (ST_NODIRATIME)
		867	const_iv (ST_RELATIME)
		868
		869	const_iv (PROT_NONE)
		870	const_iv (PROT_EXEC)
		871	const_iv (PROT_READ)
		872	const_iv (PROT_WRITE)
		873
		874	/*const_iv (MAP_FIXED)*/
		875	const_iv (MAP_PRIVATE)
		876	const_iv (MAP_SHARED)
		877	const_iv (MAP_ANONYMOUS)
		878
		879	/* linuxish */
		880	const_iv (MAP_HUGETLB)
		881	const_iv (MAP_LOCKED)
		882	const_iv (MAP_NORESERVE)
		883	const_iv (MAP_POPULATE)
		884	const_iv (MAP_NONBLOCK)
		885
		886	const_eio (MCL_FUTURE)
		887	const_eio (MCL_CURRENT)
		888
		889	const_eio (MS_ASYNC)
		890	const_eio (MS_INVALIDATE)
		891	const_eio (MS_SYNC)
		892
		893	const_eio (MT_MODIFY)
		894
		895	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		896	const_eio (SYNC_FILE_RANGE_WRITE)
		897	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		898
		899	const_eio (READDIR_DENTS)
		900	const_eio (READDIR_DIRS_FIRST)
		901	const_eio (READDIR_STAT_ORDER)
		902	const_eio (READDIR_FOUND_UNKNOWN)
		903
		904	const_eio (DT_UNKNOWN)
		905	const_eio (DT_FIFO)
		906	const_eio (DT_CHR)
		907	const_eio (DT_DIR)
		908	const_eio (DT_BLK)
		909	const_eio (DT_REG)
		910	const_eio (DT_LNK)
		911	const_eio (DT_SOCK)
		912	const_eio (DT_WHT)
		913	};
		914
1093	HV *stash = gv_stashpv ("IO::AIO", 1);	915	aio_stash = gv_stashpv ("IO::AIO" , 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	916	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	917	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097		918
		919	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		920	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		921
		922	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		923
1098	create_pipe ();	924	create_respipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101		925
		926	if (eio_init (want_poll, done_poll) < 0)
		927	croak ("IO::AIO: unable to initialise eio library");
		928
		929	/* atfork child called in fifo order, so before eio's handler */
		930	X_THREAD_ATFORK (0, 0, atfork_child);
		931	}
		932
1102	void	933	void
1103	min_parallel (nthreads)	934	max_poll_reqs (unsigned int nreqs)
1104	int nthreads
1105	PROTOTYPE: $	935	PROTOTYPE: $
		936	CODE:
		937	eio_set_max_poll_reqs (nreqs);
1106		938
1107	void	939	void
1108	max_parallel (nthreads)	940	max_poll_time (double nseconds)
1109	int nthreads
1110	PROTOTYPE: $	941	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:	942	CODE:
1117	RETVAL = max_outstanding;	943	eio_set_max_poll_time (nseconds);
		944
		945	void
		946	min_parallel (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_min_parallel (nthreads);
		950
		951	void
		952	max_parallel (unsigned int nthreads)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_max_parallel (nthreads);
		956
		957	void
		958	max_idle (unsigned int nthreads)
		959	PROTOTYPE: $
		960	CODE:
		961	eio_set_max_idle (nthreads);
		962
		963	void
		964	idle_timeout (unsigned int seconds)
		965	PROTOTYPE: $
		966	CODE:
		967	eio_set_idle_timeout (seconds);
		968
		969	void
		970	max_outstanding (unsigned int maxreqs)
		971	PROTOTYPE: $
		972	CODE:
1118	max_outstanding = nreqs;	973	max_outstanding = maxreqs;
1119		974
1120	void	975	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	976	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:	977	PPCODE:
1128	{	978	{
1129	dREQ;	979	dREQ;
1130		980
1131	req->type = REQ_OPEN;	981	req->type = EIO_OPEN;
1132	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1133	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
1134	req->fd = flags;	984	req->int1 = flags;
1135	req->mode = mode;	985	req->int2 = mode;
1136		986
1137	REQ_SEND;	987	REQ_SEND;
1138	}	988	}
1139		989
1140	void	990	void
1141	aio_close (fh,callback=&PL_sv_undef)	991	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$
1145	ALIAS:	992	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC	993	aio_fsync = EIO_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC	994	aio_fdatasync = EIO_FDATASYNC
1149	PPCODE:	995	PPCODE:
1150	{	996	{
		997	int fd = s_fileno_croak (fh, 0);
1151	dREQ;	998	dREQ;
1152		999
1153	req->type = ix;	1000	req->type = ix;
1154	req->fh = newSVsv (fh);	1001	req->sv1 = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1002	req->int1 = fd;
1156		1003
1157	REQ_SEND (req);	1004	REQ_SEND (req);
1158	}	1005	}
1159		1006
1160	void	1007	void
		1008	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1009	PPCODE:
		1010	{
		1011	int fd = s_fileno_croak (fh, 0);
		1012	dREQ;
		1013
		1014	req->type = EIO_SYNC_FILE_RANGE;
		1015	req->sv1 = newSVsv (fh);
		1016	req->int1 = fd;
		1017	req->offs = offset;
		1018	req->size = nbytes;
		1019	req->int2 = flags;
		1020
		1021	REQ_SEND (req);
		1022	}
		1023
		1024	void
		1025	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1026	PPCODE:
		1027	{
		1028	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1029	int fd = s_fileno_croak (fh, 0);
		1030	dREQ;
		1031
		1032	if (close_pipe < 0)
		1033	{
		1034	int pipefd [2];
		1035
		1036	if (pipe (pipefd) < 0
		1037	|| close (pipefd [1]) < 0
		1038	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1039	abort (); /*D*/
		1040
		1041	close_pipe = pipefd [0];
		1042	}
		1043
		1044	req->type = EIO_DUP2;
		1045	req->int1 = close_pipe;
		1046	req->sv2 = newSVsv (fh);
		1047	req->int2 = fd;
		1048
		1049	REQ_SEND (req);
		1050	}
		1051
		1052	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1053	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:	1054	ALIAS:
1169	aio_read = REQ_READ	1055	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	1056	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$
1172	PPCODE:	1057	PPCODE:
1173	{	1058	{
1174	aio_req req;
1175	STRLEN svlen;	1059	STRLEN svlen;
		1060	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	1061	char *svptr = SvPVbyte (data, svlen);
1177		1062	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		1063
1181	if (dataoffset < 0)	1064	if (dataoffset < 0)
1182	dataoffset += svlen;	1065	dataoffset += svlen;
1183		1066
1184	if (dataoffset < 0 || dataoffset > svlen)	1067	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1068	croak ("dataoffset outside of data scalar");
1186		1069
1187	if (ix == REQ_WRITE)	1070	if (ix == EIO_WRITE)
1188	{	1071	{
1189	/* write: check length and adjust. */	1072	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1073	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1074	len = svlen - dataoffset;
1192	}	1075	}
1193	else	1076	else
1194	{	1077	{
1195	/* read: grow scalar as necessary */	1078	/* read: check type and grow scalar as necessary */
		1079	SvUPGRADE (data, SVt_PV);
1196	svptr = SvGROW (data, length + dataoffset);	1080	svptr = SvGROW (data, len + dataoffset + 1);
1197	}	1081	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		1082
1202	{	1083	{
1203	dREQ;	1084	dREQ;
1204		1085
1205	req->type = ix;	1086	req->type = ix;
1206	req->fh = newSVsv (fh);	1087	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1088	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	1089	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1090	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1091	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1092	req->ptr2 = (char *)svptr + dataoffset;
		1093	req->stroffset = dataoffset;
1213		1094
1214	if (!SvREADONLY (data))	1095	if (!SvREADONLY (data))
1215	{	1096	{
1216	SvREADONLY_on (data);	1097	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1098	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1099	}
1219		1100
1220	REQ_SEND;	1101	REQ_SEND;
1221	}	1102	}
1222	}	1103	}
1223		1104
1224	void	1105	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1106	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1226	SV * out_fh	1107	ALIAS:
1227	SV * in_fh	1108	aio_readlink = EIO_READLINK
1228	UV in_offset	1109	aio_realpath = EIO_REALPATH
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$
1232	PPCODE:	1110	PPCODE:
1233	{	1111	{
		1112	SV *data;
		1113	dREQ;
		1114
		1115	req->type = ix;
		1116	req->sv1 = newSVsv (path);
		1117	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
		1123	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1124	PPCODE:
		1125	{
		1126	int ifd = s_fileno_croak (in_fh , 0);
		1127	int ofd = s_fileno_croak (out_fh, 1);
1234	dREQ;	1128	dREQ;
1235		1129
1236	req->type = REQ_SENDFILE;	1130	req->type = EIO_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1131	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1132	req->int1 = ofd;
1239	req->fh2 = newSVsv (in_fh);	1133	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1134	req->int2 = ifd;
1241	req->offset = in_offset;	1135	req->offs = in_offset;
1242	req->length = length;	1136	req->size = length;
1243		1137
1244	REQ_SEND;	1138	REQ_SEND;
1245	}	1139	}
1246		1140
1247	void	1141	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1142	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$
1254	PPCODE:	1143	PPCODE:
1255	{	1144	{
		1145	int fd = s_fileno_croak (fh, 0);
1256	dREQ;	1146	dREQ;
1257		1147
1258	req->type = REQ_READAHEAD;	1148	req->type = EIO_READAHEAD;
1259	req->fh = newSVsv (fh);	1149	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1150	req->int1 = fd;
1261	req->offset = offset;	1151	req->offs = offset;
1262	req->length = length;	1152	req->size = length;
1263		1153
1264	REQ_SEND;	1154	REQ_SEND;
1265	}	1155	}
1266		1156
1267	void	1157	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1158	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	1159	ALIAS:
1272	aio_stat = REQ_STAT	1160	aio_stat = EIO_STAT
1273	aio_lstat = REQ_LSTAT	1161	aio_lstat = EIO_LSTAT
		1162	aio_statvfs = EIO_STATVFS
1274	PPCODE:	1163	PPCODE:
1275	{	1164	{
1276	dREQ;	1165	dREQ;
1277		1166
1278	New (0, req->statdata, 1, Stat_t);	1167	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		1168
1285	if (SvPOK (fh_or_path))	1169	if (SvPOK (req->sv1))
1286	{	1170	{
1287	req->type = ix;	1171	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);	1172	req->ptr1 = SvPVbyte_nolen (req->sv1);
1290	}	1173	}
1291	else	1174	else
1292	{	1175	{
1293	req->type = REQ_FSTAT;	1176	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)));	1177	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}	1178	}
1297		1179
1298	REQ_SEND;	1180	REQ_SEND;
1299	}	1181	}
1300		1182
		1183	UV
		1184	major (UV dev)
		1185	ALIAS:
		1186	minor = 1
		1187	CODE:
		1188	RETVAL = ix ? major (dev) : minor (dev);
		1189	OUTPUT:
		1190	RETVAL
		1191
		1192	UV
		1193	makedev (UV maj, UV min)
		1194	CODE:
		1195	RETVAL = makedev (maj, min);
		1196	OUTPUT:
		1197	RETVAL
		1198
1301	void	1199	void
		1200	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1201	PPCODE:
		1202	{
		1203	dREQ;
		1204
		1205	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1206	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1207	req->sv1 = newSVsv (fh_or_path);
		1208
		1209	if (SvPOK (req->sv1))
		1210	{
		1211	req->type = EIO_UTIME;
		1212	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1213	}
		1214	else
		1215	{
		1216	req->type = EIO_FUTIME;
		1217	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1218	}
		1219
		1220	REQ_SEND;
		1221	}
		1222
		1223	void
		1224	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1225	PPCODE:
		1226	{
		1227	dREQ;
		1228
		1229	req->sv1 = newSVsv (fh_or_path);
		1230	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1231
		1232	if (SvPOK (req->sv1))
		1233	{
		1234	req->type = EIO_TRUNCATE;
		1235	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1236	}
		1237	else
		1238	{
		1239	req->type = EIO_FTRUNCATE;
		1240	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1241	}
		1242
		1243	REQ_SEND;
		1244	}
		1245
		1246	void
		1247	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1248	ALIAS:
		1249	aio_chmod = EIO_CHMOD
		1250	aio_mkdir = EIO_MKDIR
		1251	PPCODE:
		1252	{
		1253	dREQ;
		1254
		1255	req->int2 = mode;
		1256	req->sv1 = newSVsv (fh_or_path);
		1257
		1258	if (SvPOK (req->sv1))
		1259	{
		1260	req->type = ix;
		1261	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1262	}
		1263	else
		1264	{
		1265	req->type = EIO_FCHMOD;
		1266	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1267	}
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1274	PPCODE:
		1275	{
		1276	dREQ;
		1277
		1278	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1279	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1280	req->sv1 = newSVsv (fh_or_path);
		1281
		1282	if (SvPOK (req->sv1))
		1283	{
		1284	req->type = EIO_CHOWN;
		1285	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1286	}
		1287	else
		1288	{
		1289	req->type = EIO_FCHOWN;
		1290	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1291	}
		1292
		1293	REQ_SEND;
		1294	}
		1295
		1296	void
		1297	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1298	PPCODE:
		1299	{
		1300	dREQ;
		1301
		1302	req->type = EIO_READDIR;
		1303	req->sv1 = newSVsv (pathname);
		1304	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1305	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1306
		1307	if (flags & EIO_READDIR_DENTS)
		1308	req->int1 |= EIO_READDIR_CUSTOM2;
		1309
		1310	REQ_SEND;
		1311	}
		1312
		1313	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1314	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	1315	ALIAS:
1306	aio_unlink = REQ_UNLINK	1316	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	1317	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	1318	aio_readdir = EIO_READDIR
1309	PPCODE:	1319	PPCODE:
1310	{	1320	{
1311	dREQ;	1321	dREQ;
1312		1322
1313	req->type = ix;	1323	req->type = ix;
1314	req->data = newSVsv (pathname);	1324	req->sv1 = newSVsv (pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1325	req->ptr1 = SvPVbyte_nolen (req->sv1);
1316		1326
1317	REQ_SEND;	1327	REQ_SEND;
1318	}	1328	}
1319		1329
1320	void	1330	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1331	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:	1332	ALIAS:
1326	aio_link = REQ_LINK	1333	aio_link = EIO_LINK
1327	aio_symlink = REQ_SYMLINK	1334	aio_symlink = EIO_SYMLINK
1328	aio_rename = REQ_RENAME	1335	aio_rename = EIO_RENAME
1329	PPCODE:	1336	PPCODE:
1330	{	1337	{
1331	dREQ;	1338	dREQ;
1332		1339
1333	req->type = ix;	1340	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1341	req->sv1 = newSVsv (oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1342	req->ptr1 = SvPVbyte_nolen (req->sv1);
1336	req->data = newSVsv (newpath);	1343	req->sv2 = newSVsv (newpath);
1337	req->dataptr = SvPVbyte_nolen (req->data);	1344	req->ptr2 = SvPVbyte_nolen (req->sv2);
1338		1345
1339	REQ_SEND;	1346	REQ_SEND;
1340	}	1347	}
1341		1348
1342	void	1349	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1350	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1351	PPCODE:
1347	{	1352	{
1348	dREQ;	1353	dREQ;
1349		1354
1350	req->type = REQ_BUSY;	1355	req->type = EIO_MKNOD;
1351	req->fd = delay < 0. ? 0 : delay;	1356	req->sv1 = newSVsv (pathname);
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1357	req->ptr1 = SvPVbyte_nolen (req->sv1);
1353		1358	req->int2 = (mode_t)mode;
		1359	req->offs = dev;
		1360
1354	REQ_SEND;	1361	REQ_SEND;
1355	}	1362	}
1356		1363
1357	void	1364	void
1358	aio_group (callback=&PL_sv_undef)	1365	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1359	SV * callback	1366	ALIAS:
1360	PROTOTYPE: ;$	1367	aio_mtouch = EIO_MTOUCH
		1368	aio_msync = EIO_MSYNC
1361	PPCODE:	1369	PPCODE:
1362	{	1370	{
		1371	STRLEN svlen;
		1372	char *svptr = SvPVbyte (data, svlen);
		1373	UV len = SvUV (length);
		1374
		1375	if (offset < 0)
		1376	offset += svlen;
		1377
		1378	if (offset < 0 || offset > svlen)
		1379	croak ("offset outside of scalar");
		1380
		1381	if (!SvOK (length) || len + offset > svlen)
		1382	len = svlen - offset;
		1383
		1384	{
		1385	dREQ;
		1386
		1387	req->type = ix;
		1388	req->sv2 = SvREFCNT_inc (data);
		1389	req->ptr2 = (char *)svptr + offset;
		1390	req->size = len;
		1391	req->int1 = flags;
		1392
		1393	REQ_SEND;
		1394	}
		1395	}
		1396
		1397	void
		1398	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1399	PPCODE:
		1400	{
		1401	STRLEN svlen;
		1402	char *svptr = SvPVbyte (data, svlen);
		1403	UV len = SvUV (length);
		1404
		1405	if (offset < 0)
		1406	offset += svlen;
		1407
		1408	if (offset < 0 || offset > svlen)
		1409	croak ("offset outside of scalar");
		1410
		1411	if (!SvOK (length) || len + offset > svlen)
		1412	len = svlen - offset;
		1413
		1414	{
		1415	dREQ;
		1416
		1417	req->type = EIO_MLOCK;
		1418	req->sv2 = SvREFCNT_inc (data);
		1419	req->ptr2 = (char *)svptr + offset;
		1420	req->size = len;
		1421
		1422	REQ_SEND;
		1423	}
		1424	}
		1425
		1426	void
		1427	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1428	PPCODE:
		1429	{
		1430	dREQ;
		1431
		1432	req->type = EIO_MLOCKALL;
		1433	req->int1 = flags;
		1434
		1435	REQ_SEND;
		1436	}
		1437
		1438	void
		1439	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1440	PPCODE:
		1441	{
1363	dREQ;	1442	dREQ;
1364		1443
		1444	req->type = EIO_BUSY;
		1445	req->nv1 = delay < 0. ? 0. : delay;
		1446
		1447	REQ_SEND;
		1448	}
		1449
		1450	void
		1451	aio_group (SV *callback=&PL_sv_undef)
		1452	PPCODE:
		1453	{
		1454	dREQ;
		1455
1365	req->type = REQ_GROUP;	1456	req->type = EIO_GROUP;
		1457
1366	req_send (req);	1458	req_submit (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1459	XPUSHs (req_sv (req, aio_grp_stash));
1369	}	1460	}
1370		1461
1371	void	1462	void
1372	aio_nop (callback=&PL_sv_undef)	1463	aio_nop (SV *callback=&PL_sv_undef)
1373	SV * callback	1464	ALIAS:
		1465	aio_nop = EIO_NOP
		1466	aio_sync = EIO_SYNC
1374	PPCODE:	1467	PPCODE:
1375	{	1468	{
1376	dREQ;	1469	dREQ;
1377		1470
1378	req->type = REQ_NOP;	1471	req->type = ix;
1379		1472
1380	REQ_SEND;	1473	REQ_SEND;
1381	}	1474	}
1382		1475
1383	void	1476	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1477	aioreq_pri (int pri = 0)
1385	CODE:	1478	CODE:
		1479	RETVAL = next_pri;
		1480	if (items > 0)
		1481	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1482	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1483	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1484	next_pri = pri;
		1485	}
		1486	OUTPUT:
		1487	RETVAL
1389		1488
1390	void	1489	void
1391	aioreq_nice (int nice = 0)	1490	aioreq_nice (int nice = 0)
1392	CODE:	1491	CODE:
1393	nice = next_pri - nice;	1492	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1493	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1494	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1495	next_pri = nice;
1397		1496
1398	void	1497	void
1399	flush ()	1498	flush ()
1400	PROTOTYPE:
1401	CODE:	1499	CODE:
1402	while (nreqs)	1500	while (eio_nreqs ())
1403	{	1501	{
1404	poll_wait ();	1502	poll_wait ();
1405	poll_cb ();	1503	poll_cb ();
1406	}	1504	}
1407		1505
1408	void
1409	poll()
1410	PROTOTYPE:
1411	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();
1415	poll_cb ();
1416	}
1417
1418	int	1506	int
1419	poll_fileno()	1507	poll ()
1420	PROTOTYPE:
1421	CODE:	1508	CODE:
1422	RETVAL = respipe [0];	1509	poll_wait ();
1423	OUTPUT:
1424	RETVAL
1425
1426	int
1427	poll_cb(...)
1428	PROTOTYPE:
1429	CODE:
1430	RETVAL = poll_cb ();	1510	RETVAL = poll_cb ();
1431	OUTPUT:	1511	OUTPUT:
1432	RETVAL	1512	RETVAL
1433		1513
1434	void
1435	poll_wait()
1436	PROTOTYPE:
1437	CODE:
1438	if (nreqs)
1439	poll_wait ();
1440
1441	int	1514	int
1442	nreqs()	1515	poll_fileno ()
1443	PROTOTYPE:
1444	CODE:	1516	CODE:
1445	RETVAL = nreqs;	1517	RETVAL = s_epipe_fd (&respipe);
1446	OUTPUT:	1518	OUTPUT:
1447	RETVAL	1519	RETVAL
1448		1520
		1521	int
		1522	poll_cb (...)
		1523	PROTOTYPE:
		1524	CODE:
		1525	RETVAL = poll_cb ();
		1526	OUTPUT:
		1527	RETVAL
		1528
		1529	void
		1530	poll_wait ()
		1531	CODE:
		1532	poll_wait ();
		1533
		1534	int
		1535	nreqs ()
		1536	CODE:
		1537	RETVAL = eio_nreqs ();
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
		1542	nready ()
		1543	CODE:
		1544	RETVAL = eio_nready ();
		1545	OUTPUT:
		1546	RETVAL
		1547
		1548	int
		1549	npending ()
		1550	CODE:
		1551	RETVAL = eio_npending ();
		1552	OUTPUT:
		1553	RETVAL
		1554
		1555	int
		1556	nthreads ()
		1557	CODE:
		1558	RETVAL = eio_nthreads ();
		1559	OUTPUT:
		1560	RETVAL
		1561
		1562	int
		1563	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1564	CODE:
		1565	RETVAL = posix_fadvise (fh, offset, length, advice);
		1566	OUTPUT:
		1567	RETVAL
		1568
		1569	ssize_t
		1570	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1571	CODE:
		1572	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1573	OUTPUT:
		1574	RETVAL
		1575
		1576	void
		1577	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1578	PPCODE:
		1579	sv_unmagic (scalar, MMAP_MAGIC);
		1580	{
		1581	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1582	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1583	if (addr == (void *)-1)
		1584	XSRETURN_NO;
		1585
		1586	sv_force_normal (scalar);
		1587
		1588	/* we store the length in mg_obj, as namlen is I32 :/ */
		1589	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1590	->mg_obj = (SV *)length;
		1591
		1592	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1593
		1594	if (!(prot & PROT_WRITE))
		1595	SvREADONLY_on (scalar);
		1596
		1597	if (SvLEN (scalar))
		1598	Safefree (SvPVX (scalar));
		1599
		1600	SvPVX (scalar) = (char *)addr;
		1601	SvCUR_set (scalar, length);
		1602	SvLEN_set (scalar, 0);
		1603	SvPOK_only (scalar);
		1604
		1605	XSRETURN_YES;
		1606	}
		1607
		1608	void
		1609	munmap (SV *scalar)
		1610	CODE:
		1611	sv_unmagic (scalar, MMAP_MAGIC);
		1612
		1613	int
		1614	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1615	ALIAS:
		1616	mprotect = 1
		1617	CODE:
		1618	{
		1619	STRLEN svlen;
		1620	void *addr = SvPVbyte (scalar, svlen);
		1621	size_t len = SvUV (length);
		1622
		1623	if (offset < 0)
		1624	offset += svlen;
		1625
		1626	if (offset < 0 || offset > svlen)
		1627	croak ("offset outside of scalar");
		1628
		1629	if (!SvOK (length) || len + offset > svlen)
		1630	len = svlen - offset;
		1631
		1632	addr = (void *)(((intptr_t)addr) + offset);
		1633	eio_page_align (&addr, &len);
		1634
		1635	switch (ix)
		1636	{
		1637	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1638	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1639	}
		1640	}
		1641	OUTPUT:
		1642	RETVAL
		1643
		1644	int
		1645	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1646	CODE:
		1647	{
		1648	STRLEN svlen;
		1649	void *addr = SvPVbyte (scalar, svlen);
		1650	size_t len = SvUV (length);
		1651
		1652	if (offset < 0)
		1653	offset += svlen;
		1654
		1655	if (offset < 0 || offset > svlen)
		1656	croak ("offset outside of scalar");
		1657
		1658	if (!SvOK (length) || len + offset > svlen)
		1659	len = svlen - offset;
		1660
		1661	addr = (void *)(((intptr_t)addr) + offset);
		1662	eio_page_align (&addr, &len);
		1663	#if _POSIX_MEMLOCK_RANGE
		1664	RETVAL = munlock (addr, len);
		1665	#else
		1666	RETVAL = ((errno = ENOSYS), -1);
		1667	#endif
		1668	}
		1669	OUTPUT:
		1670	RETVAL
		1671
		1672	int
		1673	munlockall ()
		1674	CODE:
		1675	#if _POSIX_MEMLOCK
		1676	munlockall ();
		1677	#else
		1678	RETVAL = -1;
		1679	errno = ENOSYS;
		1680	#endif
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	void _on_next_submit (SV *cb)
		1685	CODE:
		1686	SvREFCNT_dec (on_next_submit);
		1687	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1688
1449	PROTOTYPES: DISABLE	1689	PROTOTYPES: DISABLE
1450		1690
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1691	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1692
1453	void	1693	void
1454	cancel (aio_req_ornot req)	1694	cancel (aio_req_ornot req)
1455	CODE:	1695	CODE:
1456	req_cancel (req);	1696	eio_cancel (req);
1457		1697
1458	void	1698	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1699	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460	CODE:	1700	PPCODE:
		1701	{
		1702	if (GIMME_V != G_VOID)
		1703	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1704
		1705	if (items > 1)
		1706	{
		1707	SV *cb_cv =get_cb (callback);
		1708
1461	SvREFCNT_dec (req->callback);	1709	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	1710	req->callback = SvREFCNT_inc (cb_cv);
		1711	}
		1712	}
1463		1713
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1714	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		1715
1466	void	1716	void
1467	add (aio_req grp, ...)	1717	add (aio_req grp, ...)
1468	PPCODE:	1718	PPCODE:
1469	{	1719	{
1470	int i;	1720	int i;
1471	aio_req req;
1472		1721
1473	if (grp->fd == 2)	1722	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1723	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		1724
1476	for (i = 1; i < items; ++i )	1725	for (i = 1; i < items; ++i )
1477	{	1726	{
		1727	aio_req req;
		1728
1478	if (GIMME_V != G_VOID)	1729	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1730	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		1731
1481	req = SvAIO_REQ (ST (i));	1732	req = SvAIO_REQ (ST (i));
1482		1733
1483	if (req)	1734	if (req)
1484	{	1735	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	}	1736	}
1497	}	1737	}
		1738
		1739	void
		1740	cancel_subs (aio_req_ornot req)
		1741	CODE:
		1742	req_cancel_subs (req);
1498		1743
1499	void	1744	void
1500	result (aio_req grp, ...)	1745	result (aio_req grp, ...)
1501	CODE:	1746	CODE:
1502	{	1747	{
1503	int i;	1748	int i;
		1749	AV *av;
		1750
		1751	grp->errorno = errno;
		1752
1504	AV *av = newAV ();	1753	av = newAV ();
		1754	av_extend (av, items - 1);
1505		1755
1506	for (i = 1; i < items; ++i )	1756	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1757	av_push (av, newSVsv (ST (i)));
1508		1758
1509	SvREFCNT_dec (grp->data);	1759	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1760	grp->sv1 = (SV *)av;
1511	}	1761	}
		1762
		1763	void
		1764	errno (aio_req grp, int errorno = errno)
		1765	CODE:
		1766	grp->errorno = errorno;
1512		1767
1513	void	1768	void
1514	limit (aio_req grp, int limit)	1769	limit (aio_req grp, int limit)
1515	CODE:	1770	CODE:
1516	grp->fd2 = limit;	1771	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		1772
1519	void	1773	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1774	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1775	CODE:
1522	{	1776	{
1523	SvREFCNT_dec (grp->fh2);	1777	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1778	grp->sv2 = newSVsv (callback);
		1779	grp->feed = aio_grp_feed;
1525		1780
1526	if (grp->fd2 <= 0)	1781	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1782	grp->int2 = 2;
1528		1783
1529	aio_grp_feed (grp);	1784	eio_grp_limit (grp, grp->int2);
1530	}	1785	}
1531		1786

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