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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.191 by root, Tue Jul 19 05:00:11 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>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
42	# else	294	# else
43	# error sendfile support requested but not available	295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	296	# endif
45	#endif	297	#endif
46		298	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	299	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	300	#endif
51		301	#ifndef MAP_LOCKED
52	#if __ia64	302	# 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	303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
59		313
60	/* buffer size for various temporary buffers */	314	#ifndef makedev
61	#define AIO_BUFSIZE 65536	315	# define makedev(maj,min) (((maj) << 8) | (min))
		316	#endif
		317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
62		323
63	#define dBUF \	324	#ifndef PAGESIZE
64	char *aio_buf = malloc (AIO_BUFSIZE); \	325	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	if (!aio_buf) \	326	#endif
66	return -1;
67
68	#define fBUF free (aio_buf)
69		327
70	enum {	328	enum {
71	REQ_QUIT,	329	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
72	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
76	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
78	REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,
80	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,
82	};	330	};
83		331
84	#define AIO_REQ_KLASS "IO::AIO::REQ"
85	#define AIO_GRP_KLASS "IO::AIO::GRP"
86
87	typedef struct aio_cb
88	{
89	struct aio_cb *volatile next;
90
91	SV *data, *callback;
92	SV *fh, *fh2;
93	void *dataptr, *data2ptr;
94	Stat_t *statdata;
95	off_t offset;
96	size_t length;
97	ssize_t result;
98
99	STRLEN dataoffset;
100	int type;
101	int fd, fd2;
102	int errorno;
103	mode_t mode; /* open */
104
105	unsigned char flags;
106	unsigned char pri;
107
108	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;
111
112	enum {
113	FLAG_CANCELLED = 0x01,
114	};
115
116	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
117	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
118		334
119	enum {	335	static SV *on_next_submit;
120	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
121	PRI_MAX = 4,
122
123	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};
127
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129
130	static int started, wanted;
131	static volatile int nreqs;
132	static int max_outstanding = 1<<30;	337	static int max_outstanding;
133	static int respipe [2];
134		338
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	339	static s_epipe respipe;
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140		340
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	341	static void req_destroy (aio_req req);
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
144
145	/*
146	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.
149	*/
150	typedef struct {
151	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
152	int size;
153	} reqq;
154
155	static reqq req_queue;
156	static reqq res_queue;
157
158	int reqq_push (reqq *q, aio_req req)
159	{
160	int pri = req->pri;
161	req->next = 0;
162
163	if (q->qe[pri])
164	{
165	q->qe[pri]->next = req;
166	q->qe[pri] = req;
167	}
168	else
169	q->qe[pri] = q->qs[pri] = req;
170
171	return q->size++;
172	}
173
174	aio_req reqq_shift (reqq *q)
175	{
176	int pri;
177
178	if (!q->size)
179	return 0;
180
181	--q->size;
182
183	for (pri = NUM_PRI; pri--; )
184	{
185	aio_req req = q->qs[pri];
186
187	if (req)
188	{
189	if (!(q->qs[pri] = req->next))
190	q->qe[pri] = 0;
191
192	return req;
193	}
194	}
195
196	abort ();
197	}
198
199	static void req_invoke (aio_req req);	342	static void req_cancel (aio_req req);
200	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	}
201		355
202	/* must be called at most once */	356	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
204	{	358	{
205	if (!req->self)	359	if (!req->self)
206	{	360	{
207	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
209	}	363	}
210		364
211	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
212	}	366	}
213		367
214	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
215	{	369	{
216	MAGIC *mg;	370	MAGIC *mg;
217		371
218	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")))
219	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
220		377
221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
222		379
223	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	381	}
225		382
226	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
227	{	384	{
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	385	if (grp->sv2 && SvOK (grp->sv2))
229	{	386	{
230	int old_len = grp->length;
231
232	if (grp->fh2 && SvOK (grp->fh2))
233	{
234	dSP;	387	dSP;
235		388
236	ENTER;	389	ENTER;
237	SAVETMPS;	390	SAVETMPS;
238	PUSHMARK (SP);	391	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
240	PUTBACK;	393	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	395	SPAGAIN;
243	FREETMPS;	396	FREETMPS;
244	LEAVE;	397	LEAVE;
245	}
246
247	/* stop if no progress has been made */
248	if (old_len == grp->length)
249	{
250	SvREFCNT_dec (grp->fh2);
251	grp->fh2 = 0;
252	break;
253	}
254	}	398	}
255	}	399	}
256		400
257	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
258	{	402	{
259	--grp->length;	403	eio_submit (req);
260		404
261	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
262	aio_grp_feed (grp);
263
264	/* finish, if done */
265	if (!grp->length && grp->fd)
266	{	406	{
267	req_invoke (grp);	407	dSP;
268	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);
269	}	415	}
270	}	416	}
271		417
272	static void poll_wait ()	418	static int req_invoke (eio_req *req)
273	{	419	{
274	fd_set rfd;	420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
275		422
276	while (nreqs)	423	if (!EIO_CANCELLED (req) && req->callback)
277	{	424	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)
298	{
299	dSP;	425	dSP;
300		426	static SV *sv_result_cache; /* caches the result integer SV */
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	427	SV *sv_result;
302	{
303	errno = req->errorno;
304		428
305	ENTER;	429	ENTER;
306	SAVETMPS;	430	SAVETMPS;
307	PUSHMARK (SP);	431	PUSHMARK (SP);
308	EXTEND (SP, 1);	432	EXTEND (SP, 1);
309		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
310	switch (req->type)	447	switch (req->type)
311	{	448	{
312	case REQ_READDIR:	449	case EIO_READDIR:
313	{	450	{
314	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
315		452
316	if (req->result >= 0)	453	if (req->result >= 0)
317	{	454	{
		455	int i;
318	char *buf = req->data2ptr;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
319	AV *av = newAV ();	458	AV *av = newAV ();
320		459
321	while (req->result)	460	av_extend (av, req->result - 1);
		461
		462	for (i = 0; i < req->result; ++i)
322	{	463	{
		464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		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
		488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
323	SV *sv = newSVpv (buf, 0);	494	SV *name = newSVpv (names, 0);
324
325	av_push (av, sv);	495	av_store (av, i, name);
326	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
327	req->result--;	497	}
328	}	498	}
329		499
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	501	}
332		502
333	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))));
334	}	507	}
335	break;	508	break;
336		509
337	case REQ_OPEN:	510	case EIO_OPEN:
338	{	511	{
339	/* convert fd to fh */	512	/* convert fd to fh */
340	SV *fh;	513	SV *fh = &PL_sv_undef;
341		514
342	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
343	PUTBACK;	516	{
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
345	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);
346		524
347	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	);
348		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
349	PUSHMARK (SP);	537	PUSHs (fh);
350	XPUSHs (sv_2mortal (fh));
351	}	538	}
352	break;	539	break;
353		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
354	case REQ_GROUP:	573	case EIO_GROUP:
355	req->fd = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
356		575
357	if (req->data)	576	if (req->sv1)
358	{	577	{
359	int i;	578	int i;
360	AV *av = (AV *)req->data;	579	AV *av = (AV *)req->sv1;
361		580
362	EXTEND (SP, AvFILL (av) + 1);	581	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
365	}	584	}
366	break;	585	break;
367		586
368	case REQ_NOP:	587	case EIO_NOP:
369	case REQ_BUSY:	588	case EIO_BUSY:
370	break;	589	break;
371		590
		591	case EIO_READLINK:
		592	case EIO_REALPATH:
		593	if (req->result > 0)
		594	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		595	break;
		596
		597	case EIO_STAT:
		598	case EIO_LSTAT:
		599	case EIO_FSTAT:
		600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		604	PUSHs (sv_result);
		605	break;
		606
		607	case EIO_READ:
		608	{
		609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		610	*SvEND (req->sv2) = 0;
		611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
		615	break;
		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
372	default:	622	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
374	break;	624	break;
375	}	625	}
376		626
		627	errno = req->errorno;
377		628
378	PUTBACK;	629	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
380	SPAGAIN;	631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
381		637
382	FREETMPS;	638	FREETMPS;
383	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
384	}	642	}
385		643
386	if (req->grp)	644	return !!SvTRUE (ERRSV);
387	{
388	aio_req grp = req->grp;
389
390	/* unlink request */
391	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
392	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
393
394	if (grp->grp_first == req)
395	grp->grp_first = req->grp_next;
396
397	aio_grp_dec (grp);
398	}
399
400	if (SvTRUE (ERRSV))
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	645	}
406		646
407	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
408	{	648	{
409	if (req->self)	649	if (req->self)
410	{	650	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
413	}	653	}
414		654
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	655	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	656	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420
421	if (req->type == REQ_READDIR && req->result >= 0)
422	free (req->data2ptr);
423		658
424	Safefree (req);	659	Safefree (req);
425	}	660	}
426		661
427	static void req_cancel (aio_req req)	662	static void req_cancel_subs (aio_req grp)
428	{	663	{
429	req->flags |= FLAG_CANCELLED;
430
431	if (req->type == REQ_GROUP)	664	if (grp->type != EIO_GROUP)
		665	return;
		666
		667	SvREFCNT_dec (grp->sv2);
		668	grp->sv2 = 0;
		669
		670	eio_grp_cancel (grp);
		671	}
		672
		673	static void 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 ())
432	{	682	{
433	aio_req sub;	683	int size;
434		684
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	685	X_LOCK (reslock);
436	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);
437	}	695	}
438	}	696	}
439		697
440	static int poll_cb ()	698	static int poll_cb (void)
441	{	699	{
442	dSP;
443	int count = 0;
444	int do_croak = 0;
445	aio_req req;
446
447	for (;;)	700	for (;;)
448	{	701	{
449	pthread_mutex_lock (&reslock);	702	int res = eio_poll ();
450	req = reqq_shift (&res_queue);
451		703
452	if (req)	704	if (res > 0)
453	{
454	if (!res_queue.size)
455	{
456	/* read any signals sent by the worker threads */
457	char buf [32];
458	while (read (respipe [0], buf, 32) == 32)
459	;
460	}
461	}
462
463	pthread_mutex_unlock (&reslock);
464
465	if (!req)
466	break;	705	croak (0);
467		706
468	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
469		709
470	if (req->type == REQ_QUIT)	710	poll_wait ();
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	711	}
499
500	return count;
501	}	712	}
502		713
503	static void *aio_proc(void *arg);	714	static void ecb_cold
504		715	reinit (void)
505	static void start_thread (void)
506	{	716	{
507	sigset_t fullsigset, oldsigset;	717	create_respipe ();
508	pthread_t tid;
509	pthread_attr_t attr;
510		718
511	pthread_attr_init (&attr);	719	if (eio_init (want_poll, done_poll) < 0)
512	pthread_attr_setstacksize (&attr, STACKSIZE);	720	croak ("IO::AIO: unable to initialise eio library");
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}
585
586	static void create_pipe ()
587	{
588	if (pipe (respipe))
589	croak ("unable to initialize result pipe");
590
591	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593
594	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
595	croak ("cannot set result pipe to nonblocking mode");
596	}	721	}
597		722
598	/*****************************************************************************/	723	/*****************************************************************************/
599	/* work around various missing functions */
600		724
601	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
602	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
603	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
604
605	/*
606	* make our pread/pwrite safe against themselves, but not against
607	* normal read/write by using a mutex. slows down execution a lot,
608	* but that's your problem, not mine.
609	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
611
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{
614	ssize_t res;
615	off_t ooffset;
616
617	pthread_mutex_lock (&preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);
623
624	return res;
625	}
626
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{
629	ssize_t res;
630	off_t ooffset;
631
632	pthread_mutex_lock (&preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);
638
639	return res;
640	}
641	#endif
642
643	#if !HAVE_FDATASYNC
644	# define fdatasync fsync
645	#endif
646
647	#if !HAVE_READAHEAD
648	# define readahead aio_readahead
649
650	static ssize_t readahead (int fd, off_t offset, size_t count)
651	{
652	dBUF;
653
654	while (count > 0)
655	{
656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
657
658	pread (fd, aio_buf, len, offset);
659	offset += len;
660	count -= len;
661	}
662
663	fBUF;
664
665	errno = 0;
666	}
667	#endif
668
669	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r
671
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
673
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{
676	struct dirent *e;
677	int errorno;
678
679	pthread_mutex_lock (&readdirlock);
680
681	e = readdir (dirp);
682	errorno = errno;
683
684	if (e)
685	{
686	*res = ent;
687	strcpy (ent->d_name, e->d_name);
688	}
689	else
690	*res = 0;
691
692	pthread_mutex_unlock (&readdirlock);
693
694	errno = errorno;
695	return e ? 0 : -1;
696	}
697	#endif
698
699	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
701	{
702	ssize_t res;
703
704	if (!count)
705	return 0;
706
707	#if HAVE_SENDFILE
708	# if __linux
709	res = sendfile (ofd, ifd, &offset, count);
710
711	# elif __freebsd
712	/*
713	* Of course, the freebsd sendfile is a dire hack with no thoughts
714	* wasted on making it similar to other I/O functions.
715	*/
716	{
717	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719
720	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
722	res = sbytes;
723	}
724
725	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);
727
728	# elif __solaris
729	{
730	struct sendfilevec vec;
731	size_t sbytes;
732
733	vec.sfv_fd = ifd;
734	vec.sfv_flag = 0;
735	vec.sfv_off = offset;
736	vec.sfv_len = count;
737
738	res = sendfilev (ofd, &vec, 1, &sbytes);
739
740	if (res < 0 && sbytes)
741	res = sbytes;
742	}
743
744	# endif	728	#endif
745	#else
746	res = -1;
747	errno = ENOSYS;
748	#endif
749		729
750	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
751	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
752	#if __solaris	732	# define PROT_NONE 0
753	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
754	#endif	737	#endif
755	)
756	)
757	{
758	/* emulate sendfile. this is a major pain in the ass */
759	dBUF;
760		738
761	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
762		740
763	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
764	{
765	ssize_t cnt;
766
767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
768
769	if (cnt <= 0)
770	{
771	if (cnt && !res) res = -1;
772	break;
773	}
774
775	cnt = write (ofd, aio_buf, cnt);
776
777	if (cnt <= 0)
778	{
779	if (cnt && !res) res = -1;
780	break;
781	}
782
783	offset += cnt;
784	res += cnt;
785	count -= cnt;
786	}
787
788	fBUF;
789	}
790
791	return res;
792	}
793
794	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)
796	{	742	{
797	DIR *dirp;	743	int old_errno = errno;
798	union	744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
799	{
800	struct dirent d;
801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
802	} *u;
803	struct dirent *entp;
804	char *name, *names;
805	int memlen = 4096;
806	int memofs = 0;
807	int res = 0;
808	int errorno;
809
810	dirp = opendir (path);
811	if (!dirp)
812	return -1;
813
814	u = malloc (sizeof (*u));
815	names = malloc (memlen);
816
817	if (u && names)
818	for (;;)
819	{
820	errno = 0;
821	readdir_r (dirp, &u->d, &entp);
822
823	if (!entp)
824	break;
825
826	name = entp->d_name;
827
828	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
829	{
830	int len = strlen (name) + 1;
831
832	res++;
833
834	while (memofs + len > memlen)
835	{
836	memlen *= 2;
837	names = realloc (names, memlen);
838	if (!names)
839	break;
840	}
841
842	memcpy (names + memofs, name, len);
843	memofs += len;
844	}
845	}
846
847	errorno = errno;	745	errno = old_errno;
848	free (u);
849	closedir (dirp);
850		746
851	if (errorno)	747	mg->mg_obj = 0; /* just in case */
852	{
853	free (names);
854	errno = errorno;
855	res = -1;
856	}
857		748
858	*namesp = (void *)names;	749	SvREADONLY_off (sv);
		750
		751	if (SvPVX (sv) != mg->mg_ptr)
		752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		753
		754	SvCUR_set (sv, 0);
		755	SvPVX (sv) = 0;
		756	SvOK_off (sv);
		757
859	return res;	758	return 0;
860	}	759	}
		760
		761	static MGVTBL mmap_vtbl = {
		762	0, 0, 0, 0, mmap_free
		763	};
861		764
862	/*****************************************************************************/	765	/*****************************************************************************/
863		766
864	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
865	{	768	{
866	aio_req req;	769	SvGETMAGIC (cb_sv);
867	int type;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872
873	for (;;)
874	{
875	req = reqq_shift (&req_queue);
876
877	if (req)
878	break;
879
880	pthread_cond_wait (&reqwait, &reqlock);
881	}
882
883	pthread_mutex_unlock (&reqlock);
884
885	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887
888	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)
890	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
893
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
896
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
900
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
908
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
912
913	case REQ_BUSY:
914	{
915	struct timeval tv;
916
917	tv.tv_sec = req->fd;
918	tv.tv_usec = req->fd2;
919
920	req->result = select (0, 0, 0, 0, &tv);
921	}
922
923	case REQ_GROUP:
924	case REQ_NOP:
925	case REQ_QUIT:
926	break;
927
928	default:
929	req->result = ENOSYS;
930	break;
931	}
932
933	req->errorno = errno;
934
935	pthread_mutex_lock (&reslock);
936
937	if (!reqq_push (&res_queue, req))
938	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);
940
941	pthread_mutex_unlock (&reslock);
942	}
943	while (type != REQ_QUIT);
944
945	return 0;
946	}
947
948	/*****************************************************************************/
949
950	static void atfork_prepare (void)
951	{
952	pthread_mutex_lock (&reqlock);
953	pthread_mutex_lock (&reslock);
954	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);
956	#endif
957	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);
959	#endif
960	}
961
962	static void atfork_parent (void)
963	{
964	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);
966	#endif
967	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);
969	#endif
970	pthread_mutex_unlock (&reslock);
971	pthread_mutex_unlock (&reqlock);
972	}
973
974	static void atfork_child (void)
975	{
976	aio_req prv;
977
978	started = 0;
979
980	while (prv = reqq_shift (&req_queue))
981	req_free (prv);
982
983	while (prv = reqq_shift (&res_queue))
984	req_free (prv);
985
986	close (respipe [0]);
987	close (respipe [1]);
988	create_pipe ();
989
990	atfork_parent ();
991	}	771	}
992		772
993	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
994	aio_req req; \	775	aio_req req; \
995	int req_pri = next_pri; \	776	int req_pri = next_pri; \
996	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
997	\	778	\
998	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
999	croak ("callback must be undef or of reference type"); \
1000	\	780	\
1001	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1002	if (!req) \	782	if (!req) \
1003	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1004	\	784	\
1005	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1006	req->pri = req_pri	786	req->pri = req_pri
1007		787
1008	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1009	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1010	\	792	\
1011	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1012	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1013		795
1014	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1015		797
1016	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1017		799
1018	BOOT:	800	BOOT:
1019	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1024		922
1025	create_pipe ();	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1027	}
1028		925
		926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		927
		928	reinit ();
		929	}
		930
1029	void	931	void
1030	min_parallel (nthreads)	932	reinit ()
1031	int nthreads	933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
		938	max_poll_reqs (unsigned int nreqs)
1032	PROTOTYPE: $	939	PROTOTYPE: $
		940	CODE:
		941	eio_set_max_poll_reqs (nreqs);
1033		942
1034	void	943	void
1035	max_parallel (nthreads)	944	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	945	PROTOTYPE: $
1038
1039	int
1040	max_outstanding (nreqs)
1041	int nreqs
1042	PROTOTYPE: $
1043	CODE:	946	CODE:
1044	RETVAL = max_outstanding;	947	eio_set_max_poll_time (nseconds);
		948
		949	void
		950	min_parallel (unsigned int nthreads)
		951	PROTOTYPE: $
		952	CODE:
		953	eio_set_min_parallel (nthreads);
		954
		955	void
		956	max_parallel (unsigned int nthreads)
		957	PROTOTYPE: $
		958	CODE:
		959	eio_set_max_parallel (nthreads);
		960
		961	void
		962	max_idle (unsigned int nthreads)
		963	PROTOTYPE: $
		964	CODE:
		965	eio_set_max_idle (nthreads);
		966
		967	void
		968	idle_timeout (unsigned int seconds)
		969	PROTOTYPE: $
		970	CODE:
		971	eio_set_idle_timeout (seconds);
		972
		973	void
		974	max_outstanding (unsigned int maxreqs)
		975	PROTOTYPE: $
		976	CODE:
1045	max_outstanding = nreqs;	977	max_outstanding = maxreqs;
1046		978
1047	void	979	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1049	SV * pathname
1050	int flags
1051	int mode
1052	SV * callback
1053	PROTOTYPE: $$$;$
1054	PPCODE:	981	PPCODE:
1055	{	982	{
1056	dREQ;	983	dREQ;
1057		984
1058	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
1059	req->data = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	988	req->int1 = flags;
1062	req->mode = mode;	989	req->int2 = mode;
1063		990
1064	REQ_SEND;	991	REQ_SEND;
1065	}	992	}
1066		993
1067	void	994	void
1068	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$
1072	ALIAS:	996	ALIAS:
1073	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
1076	PPCODE:	999	PPCODE:
1077	{	1000	{
		1001	int fd = s_fileno_croak (fh, 0);
1078	dREQ;	1002	dREQ;
1079		1003
1080	req->type = ix;	1004	req->type = ix;
1081	req->fh = newSVsv (fh);	1005	req->sv1 = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1006	req->int1 = fd;
1083		1007
1084	REQ_SEND (req);	1008	REQ_SEND (req);
1085	}	1009	}
1086		1010
1087	void	1011	void
		1012	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1013	PPCODE:
		1014	{
		1015	int fd = s_fileno_croak (fh, 0);
		1016	dREQ;
		1017
		1018	req->type = EIO_SYNC_FILE_RANGE;
		1019	req->sv1 = newSVsv (fh);
		1020	req->int1 = fd;
		1021	req->offs = offset;
		1022	req->size = nbytes;
		1023	req->int2 = flags;
		1024
		1025	REQ_SEND (req);
		1026	}
		1027
		1028	void
		1029	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1030	PPCODE:
		1031	{
		1032	int fd = s_fileno_croak (fh, 0);
		1033	dREQ;
		1034
		1035	req->type = EIO_FALLOCATE;
		1036	req->sv1 = newSVsv (fh);
		1037	req->int1 = fd;
		1038	req->int2 = mode;
		1039	req->offs = offset;
		1040	req->size = len;
		1041
		1042	REQ_SEND (req);
		1043	}
		1044
		1045	void
		1046	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1047	PPCODE:
		1048	{
		1049	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1050	int fd = s_fileno_croak (fh, 0);
		1051	dREQ;
		1052
		1053	if (expect_false (close_fd < 0))
		1054	{
		1055	int pipefd [2];
		1056
		1057	if (
		1058	#ifdef _WIN32
		1059	_pipe (pipefd, 1, _O_BINARY) < 0
		1060	#else
		1061	pipe (pipefd) < 0
		1062	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1063	#endif
		1064	|| close (pipefd [1]) < 0
		1065	)
		1066	abort (); /*D*/
		1067
		1068	close_fd = pipefd [0];
		1069	}
		1070
		1071	req->type = EIO_DUP2;
		1072	req->int1 = close_fd;
		1073	req->sv2 = newSVsv (fh);
		1074	req->int2 = fd;
		1075
		1076	REQ_SEND (req);
		1077	}
		1078
		1079	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1080	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:	1081	ALIAS:
1096	aio_read = REQ_READ	1082	aio_read = EIO_READ
1097	aio_write = REQ_WRITE	1083	aio_write = EIO_WRITE
1098	PROTOTYPE: $$$$$;$
1099	PPCODE:	1084	PPCODE:
1100	{	1085	{
1101	aio_req req;
1102	STRLEN svlen;	1086	STRLEN svlen;
		1087	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1103	char *svptr = SvPVbyte (data, svlen);	1088	char *svptr = SvPVbyte (data, svlen);
1104		1089	UV len = SvUV (length);
1105	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);
1107		1090
1108	if (dataoffset < 0)	1091	if (dataoffset < 0)
1109	dataoffset += svlen;	1092	dataoffset += svlen;
1110		1093
1111	if (dataoffset < 0 || dataoffset > svlen)	1094	if (dataoffset < 0 || dataoffset > svlen)
1112	croak ("data offset outside of string");	1095	croak ("dataoffset outside of data scalar");
1113		1096
1114	if (ix == REQ_WRITE)	1097	if (ix == EIO_WRITE)
1115	{	1098	{
1116	/* write: check length and adjust. */	1099	/* write: check length and adjust. */
1117	if (length < 0 || length + dataoffset > svlen)	1100	if (!SvOK (length) || len + dataoffset > svlen)
1118	length = svlen - dataoffset;	1101	len = svlen - dataoffset;
1119	}	1102	}
1120	else	1103	else
1121	{	1104	{
1122	/* read: grow scalar as necessary */	1105	/* read: check type and grow scalar as necessary */
		1106	SvUPGRADE (data, SVt_PV);
1123	svptr = SvGROW (data, length + dataoffset);	1107	svptr = SvGROW (data, len + dataoffset + 1);
1124	}	1108	}
1125
1126	if (length < 0)
1127	croak ("length must not be negative");
1128		1109
1129	{	1110	{
1130	dREQ;	1111	dREQ;
1131		1112
1132	req->type = ix;	1113	req->type = ix;
1133	req->fh = newSVsv (fh);	1114	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1115	req->int1 = fd;
1135	: IoOFP (sv_2io (fh)));	1116	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136	req->offset = offset;	1117	req->size = len;
1137	req->length = length;
1138	req->data = SvREFCNT_inc (data);	1118	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1119	req->ptr2 = (char *)svptr + dataoffset;
		1120	req->stroffset = dataoffset;
1140		1121
1141	if (!SvREADONLY (data))	1122	if (!SvREADONLY (data))
1142	{	1123	{
1143	SvREADONLY_on (data);	1124	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1125	req->flags |= FLAG_SV2_RO_OFF;
1145	}	1126	}
1146		1127
1147	REQ_SEND;	1128	REQ_SEND;
1148	}	1129	}
1149	}	1130	}
1150		1131
1151	void	1132	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1133	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1153	SV * out_fh	1134	ALIAS:
1154	SV * in_fh	1135	aio_readlink = EIO_READLINK
1155	UV in_offset	1136	aio_realpath = EIO_REALPATH
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$
1159	PPCODE:	1137	PPCODE:
1160	{	1138	{
		1139	dREQ;
		1140
		1141	req->type = ix;
		1142	req->sv1 = newSVsv (path);
		1143	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1144
		1145	REQ_SEND;
		1146	}
		1147
		1148	void
		1149	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1150	PPCODE:
		1151	{
		1152	int ifd = s_fileno_croak (in_fh , 0);
		1153	int ofd = s_fileno_croak (out_fh, 1);
1161	dREQ;	1154	dREQ;
1162		1155
1163	req->type = REQ_SENDFILE;	1156	req->type = EIO_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1157	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1158	req->int1 = ofd;
1166	req->fh2 = newSVsv (in_fh);	1159	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1160	req->int2 = ifd;
1168	req->offset = in_offset;	1161	req->offs = in_offset;
1169	req->length = length;	1162	req->size = length;
1170		1163
1171	REQ_SEND;	1164	REQ_SEND;
1172	}	1165	}
1173		1166
1174	void	1167	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1168	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$
1181	PPCODE:	1169	PPCODE:
1182	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1183	dREQ;	1172	dREQ;
1184		1173
1185	req->type = REQ_READAHEAD;	1174	req->type = EIO_READAHEAD;
1186	req->fh = newSVsv (fh);	1175	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1176	req->int1 = fd;
1188	req->offset = offset;	1177	req->offs = offset;
1189	req->length = length;	1178	req->size = length;
1190		1179
1191	REQ_SEND;	1180	REQ_SEND;
1192	}	1181	}
1193		1182
1194	void	1183	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1184	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	1185	ALIAS:
1199	aio_stat = REQ_STAT	1186	aio_stat = EIO_STAT
1200	aio_lstat = REQ_LSTAT	1187	aio_lstat = EIO_LSTAT
		1188	aio_statvfs = EIO_STATVFS
1201	PPCODE:	1189	PPCODE:
1202	{	1190	{
1203	dREQ;	1191	dREQ;
1204		1192
1205	New (0, req->statdata, 1, Stat_t);	1193	req->sv1 = newSVsv (fh_or_path);
1206	if (!req->statdata)
1207	{
1208	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");
1210	}
1211		1194
1212	if (SvPOK (fh_or_path))	1195	if (SvPOK (req->sv1))
1213	{	1196	{
1214	req->type = ix;	1197	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1198	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1199	}
1218	else	1200	else
1219	{	1201	{
1220	req->type = REQ_FSTAT;	1202	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1221	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1203	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1204	}
1224		1205
1225	REQ_SEND;	1206	REQ_SEND;
1226	}	1207	}
1227		1208
		1209	UV
		1210	major (UV dev)
		1211	ALIAS:
		1212	minor = 1
		1213	CODE:
		1214	RETVAL = ix ? major (dev) : minor (dev);
		1215	OUTPUT:
		1216	RETVAL
		1217
		1218	UV
		1219	makedev (UV maj, UV min)
		1220	CODE:
		1221	RETVAL = makedev (maj, min);
		1222	OUTPUT:
		1223	RETVAL
		1224
1228	void	1225	void
		1226	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1227	PPCODE:
		1228	{
		1229	dREQ;
		1230
		1231	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1232	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1233	req->sv1 = newSVsv (fh_or_path);
		1234
		1235	if (SvPOK (req->sv1))
		1236	{
		1237	req->type = EIO_UTIME;
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	}
		1240	else
		1241	{
		1242	req->type = EIO_FUTIME;
		1243	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1244	}
		1245
		1246	REQ_SEND;
		1247	}
		1248
		1249	void
		1250	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1251	PPCODE:
		1252	{
		1253	dREQ;
		1254
		1255	req->sv1 = newSVsv (fh_or_path);
		1256	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1257
		1258	if (SvPOK (req->sv1))
		1259	{
		1260	req->type = EIO_TRUNCATE;
		1261	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1262	}
		1263	else
		1264	{
		1265	req->type = EIO_FTRUNCATE;
		1266	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1267	}
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1274	ALIAS:
		1275	aio_chmod = EIO_CHMOD
		1276	aio_mkdir = EIO_MKDIR
		1277	PPCODE:
		1278	{
		1279	dREQ;
		1280
		1281	req->int2 = mode;
		1282	req->sv1 = newSVsv (fh_or_path);
		1283
		1284	if (SvPOK (req->sv1))
		1285	{
		1286	req->type = ix;
		1287	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1288	}
		1289	else
		1290	{
		1291	req->type = EIO_FCHMOD;
		1292	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1293	}
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	void
		1299	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1300	PPCODE:
		1301	{
		1302	dREQ;
		1303
		1304	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1305	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1306	req->sv1 = newSVsv (fh_or_path);
		1307
		1308	if (SvPOK (req->sv1))
		1309	{
		1310	req->type = EIO_CHOWN;
		1311	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1312	}
		1313	else
		1314	{
		1315	req->type = EIO_FCHOWN;
		1316	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1317	}
		1318
		1319	REQ_SEND;
		1320	}
		1321
		1322	void
		1323	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->type = EIO_READDIR;
		1329	req->sv1 = newSVsv (pathname);
		1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1331	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1332
		1333	if (flags & EIO_READDIR_DENTS)
		1334	req->int1 |= EIO_READDIR_CUSTOM2;
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1340	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	1341	ALIAS:
1233	aio_unlink = REQ_UNLINK	1342	aio_unlink = EIO_UNLINK
1234	aio_rmdir = REQ_RMDIR	1343	aio_rmdir = EIO_RMDIR
1235	aio_readdir = REQ_READDIR	1344	aio_readdir = EIO_READDIR
1236	PPCODE:	1345	PPCODE:
1237	{	1346	{
1238	dREQ;	1347	dREQ;
1239		1348
1240	req->type = ix;	1349	req->type = ix;
1241	req->data = newSVsv (pathname);	1350	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->ptr1 = SvPVbyte_nolen (req->sv1);
1243		1352
1244	REQ_SEND;	1353	REQ_SEND;
1245	}	1354	}
1246		1355
1247	void	1356	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1357	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1249	SV * oldpath
1250	SV * newpath
1251	SV * callback
1252	ALIAS:	1358	ALIAS:
1253	aio_link = REQ_LINK	1359	aio_link = EIO_LINK
1254	aio_symlink = REQ_SYMLINK	1360	aio_symlink = EIO_SYMLINK
1255	aio_rename = REQ_RENAME	1361	aio_rename = EIO_RENAME
1256	PPCODE:	1362	PPCODE:
1257	{	1363	{
1258	dREQ;	1364	dREQ;
1259		1365
1260	req->type = ix;	1366	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1367	req->sv1 = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1368	req->ptr1 = SvPVbyte_nolen (req->sv1);
1263	req->data = newSVsv (newpath);	1369	req->sv2 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1370	req->ptr2 = SvPVbyte_nolen (req->sv2);
1265		1371
1266	REQ_SEND;	1372	REQ_SEND;
1267	}	1373	}
1268		1374
1269	void	1375	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1376	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1377	PPCODE:
1274	{	1378	{
1275	dREQ;	1379	dREQ;
1276		1380
1277	req->type = REQ_BUSY;	1381	req->type = EIO_MKNOD;
1278	req->fd = delay < 0. ? 0 : delay;	1382	req->sv1 = newSVsv (pathname);
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1383	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280		1384	req->int2 = (mode_t)mode;
		1385	req->offs = dev;
		1386
1281	REQ_SEND;	1387	REQ_SEND;
1282	}	1388	}
1283		1389
1284	void	1390	void
1285	aio_group (callback=&PL_sv_undef)	1391	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1286	SV * callback	1392	ALIAS:
1287	PROTOTYPE: ;$	1393	aio_mtouch = EIO_MTOUCH
		1394	aio_msync = EIO_MSYNC
1288	PPCODE:	1395	PPCODE:
1289	{	1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = ix;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417	req->int1 = flags;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	STRLEN svlen;
		1428	char *svptr = SvPVbyte (data, svlen);
		1429	UV len = SvUV (length);
		1430
		1431	if (offset < 0)
		1432	offset += svlen;
		1433
		1434	if (offset < 0 || offset > svlen)
		1435	croak ("offset outside of scalar");
		1436
		1437	if (!SvOK (length) || len + offset > svlen)
		1438	len = svlen - offset;
		1439
		1440	{
		1441	dREQ;
		1442
		1443	req->type = EIO_MLOCK;
		1444	req->sv2 = SvREFCNT_inc (data);
		1445	req->ptr2 = (char *)svptr + offset;
		1446	req->size = len;
		1447
		1448	REQ_SEND;
		1449	}
		1450	}
		1451
		1452	void
		1453	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1454	PPCODE:
		1455	{
		1456	dREQ;
		1457
		1458	req->type = EIO_MLOCKALL;
		1459	req->int1 = flags;
		1460
		1461	REQ_SEND;
		1462	}
		1463
		1464	void
		1465	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1466	PPCODE:
		1467	{
1290	dREQ;	1468	dREQ;
1291		1469
		1470	req->type = EIO_BUSY;
		1471	req->nv1 = delay < 0. ? 0. : delay;
		1472
		1473	REQ_SEND;
		1474	}
		1475
		1476	void
		1477	aio_group (SV *callback=&PL_sv_undef)
		1478	PPCODE:
		1479	{
		1480	dREQ;
		1481
1292	req->type = REQ_GROUP;	1482	req->type = EIO_GROUP;
		1483
1293	req_send (req);	1484	req_submit (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1485	XPUSHs (req_sv (req, aio_grp_stash));
1296	}	1486	}
1297		1487
1298	void	1488	void
1299	aio_nop (callback=&PL_sv_undef)	1489	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback	1490	ALIAS:
		1491	aio_nop = EIO_NOP
		1492	aio_sync = EIO_SYNC
1301	PPCODE:	1493	PPCODE:
1302	{	1494	{
1303	dREQ;	1495	dREQ;
1304		1496
1305	req->type = REQ_NOP;	1497	req->type = ix;
1306		1498
1307	REQ_SEND;	1499	REQ_SEND;
1308	}	1500	}
1309		1501
1310	void	1502	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1503	aioreq_pri (int pri = 0)
1312	CODE:	1504	CODE:
		1505	RETVAL = next_pri;
		1506	if (items > 0)
		1507	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1508	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1509	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1510	next_pri = pri;
		1511	}
		1512	OUTPUT:
		1513	RETVAL
1316		1514
1317	void	1515	void
1318	aioreq_nice (int nice = 0)	1516	aioreq_nice (int nice = 0)
1319	CODE:	1517	CODE:
1320	nice = next_pri - nice;	1518	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1519	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1520	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1521	next_pri = nice;
1324		1522
1325	void	1523	void
1326	flush ()	1524	flush ()
1327	PROTOTYPE:
1328	CODE:	1525	CODE:
1329	while (nreqs)	1526	while (eio_nreqs ())
1330	{	1527	{
1331	poll_wait ();	1528	poll_wait ();
1332	poll_cb ();	1529	poll_cb ();
1333	}	1530	}
1334		1531
1335	void
1336	poll()
1337	PROTOTYPE:
1338	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();
1342	poll_cb ();
1343	}
1344
1345	int	1532	int
1346	poll_fileno()	1533	poll ()
1347	PROTOTYPE:
1348	CODE:	1534	CODE:
1349	RETVAL = respipe [0];	1535	poll_wait ();
1350	OUTPUT:
1351	RETVAL
1352
1353	int
1354	poll_cb(...)
1355	PROTOTYPE:
1356	CODE:
1357	RETVAL = poll_cb ();	1536	RETVAL = poll_cb ();
1358	OUTPUT:	1537	OUTPUT:
1359	RETVAL	1538	RETVAL
1360		1539
1361	void
1362	poll_wait()
1363	PROTOTYPE:
1364	CODE:
1365	if (nreqs)
1366	poll_wait ();
1367
1368	int	1540	int
1369	nreqs()	1541	poll_fileno ()
1370	PROTOTYPE:
1371	CODE:	1542	CODE:
1372	RETVAL = nreqs;	1543	RETVAL = s_epipe_fd (&respipe);
1373	OUTPUT:	1544	OUTPUT:
1374	RETVAL	1545	RETVAL
1375		1546
		1547	int
		1548	poll_cb (...)
		1549	PROTOTYPE:
		1550	CODE:
		1551	RETVAL = poll_cb ();
		1552	OUTPUT:
		1553	RETVAL
		1554
		1555	void
		1556	poll_wait ()
		1557	CODE:
		1558	poll_wait ();
		1559
		1560	int
		1561	nreqs ()
		1562	CODE:
		1563	RETVAL = eio_nreqs ();
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	int
		1568	nready ()
		1569	CODE:
		1570	RETVAL = eio_nready ();
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	int
		1575	npending ()
		1576	CODE:
		1577	RETVAL = eio_npending ();
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	int
		1582	nthreads ()
		1583	CODE:
		1584	RETVAL = eio_nthreads ();
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	int
		1589	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1590	CODE:
		1591	RETVAL = posix_fadvise (fh, offset, length, advice);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	IV
		1596	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1597	CODE:
		1598	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	void
		1603	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1604	PPCODE:
		1605	sv_unmagic (scalar, MMAP_MAGIC);
		1606	{
		1607	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1608	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1609	if (addr == (void *)-1)
		1610	XSRETURN_NO;
		1611
		1612	sv_force_normal (scalar);
		1613
		1614	/* we store the length in mg_obj, as namlen is I32 :/ */
		1615	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1616	->mg_obj = (SV *)length;
		1617
		1618	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1619
		1620	if (!(prot & PROT_WRITE))
		1621	SvREADONLY_on (scalar);
		1622
		1623	if (SvLEN (scalar))
		1624	Safefree (SvPVX (scalar));
		1625
		1626	SvPVX (scalar) = (char *)addr;
		1627	SvCUR_set (scalar, length);
		1628	SvLEN_set (scalar, 0);
		1629	SvPOK_only (scalar);
		1630
		1631	XSRETURN_YES;
		1632	}
		1633
		1634	void
		1635	munmap (SV *scalar)
		1636	CODE:
		1637	sv_unmagic (scalar, MMAP_MAGIC);
		1638
		1639	int
		1640	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1641	ALIAS:
		1642	mprotect = 1
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660
		1661	switch (ix)
		1662	{
		1663	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1664	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1665	}
		1666	}
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1672	CODE:
		1673	{
		1674	STRLEN svlen;
		1675	void *addr = SvPVbyte (scalar, svlen);
		1676	size_t len = SvUV (length);
		1677
		1678	if (offset < 0)
		1679	offset += svlen;
		1680
		1681	if (offset < 0 || offset > svlen)
		1682	croak ("offset outside of scalar");
		1683
		1684	if (!SvOK (length) || len + offset > svlen)
		1685	len = svlen - offset;
		1686
		1687	addr = (void *)(((intptr_t)addr) + offset);
		1688	eio_page_align (&addr, &len);
		1689	#if _POSIX_MEMLOCK_RANGE
		1690	RETVAL = munlock (addr, len);
		1691	#else
		1692	RETVAL = ((errno = ENOSYS), -1);
		1693	#endif
		1694	}
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	munlockall ()
		1700	CODE:
		1701	#if _POSIX_MEMLOCK
		1702	munlockall ();
		1703	#else
		1704	RETVAL = -1;
		1705	errno = ENOSYS;
		1706	#endif
		1707	OUTPUT:
		1708	RETVAL
		1709
		1710	void _on_next_submit (SV *cb)
		1711	CODE:
		1712	SvREFCNT_dec (on_next_submit);
		1713	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1714
1376	PROTOTYPES: DISABLE	1715	PROTOTYPES: DISABLE
1377		1716
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1717	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1718
1380	void	1719	void
1381	cancel (aio_req_ornot req)	1720	cancel (aio_req_ornot req)
1382	CODE:	1721	CODE:
1383	req_cancel (req);	1722	eio_cancel (req);
1384		1723
1385	void	1724	void
1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1725	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1387	CODE:	1726	PPCODE:
		1727	{
		1728	if (GIMME_V != G_VOID)
		1729	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1730
		1731	if (items > 1)
		1732	{
		1733	SV *cb_cv =get_cb (callback);
		1734
1388	SvREFCNT_dec (req->callback);	1735	SvREFCNT_dec (req->callback);
1389	req->callback = newSVsv (callback);	1736	req->callback = SvREFCNT_inc (cb_cv);
		1737	}
		1738	}
1390		1739
1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1740	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1392		1741
1393	void	1742	void
1394	add (aio_req grp, ...)	1743	add (aio_req grp, ...)
1395	PPCODE:	1744	PPCODE:
1396	{	1745	{
1397	int i;	1746	int i;
1398	aio_req req;
1399		1747
1400	if (grp->fd == 2)	1748	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1749	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1750
1403	for (i = 1; i < items; ++i )	1751	for (i = 1; i < items; ++i )
1404	{	1752	{
		1753	aio_req req;
		1754
1405	if (GIMME_V != G_VOID)	1755	if (GIMME_V != G_VOID)
1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1756	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1407		1757
1408	req = SvAIO_REQ (ST (i));	1758	req = SvAIO_REQ (ST (i));
1409		1759
1410	if (req)	1760	if (req)
1411	{	1761	eio_grp_add (grp, req);
1412	++grp->length;
1413	req->grp = grp;
1414
1415	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;
1417
1418	if (grp->grp_first)
1419	grp->grp_first->grp_prev = req;
1420
1421	grp->grp_first = req;
1422	}
1423	}	1762	}
1424	}	1763	}
		1764
		1765	void
		1766	cancel_subs (aio_req_ornot req)
		1767	CODE:
		1768	req_cancel_subs (req);
1425		1769
1426	void	1770	void
1427	result (aio_req grp, ...)	1771	result (aio_req grp, ...)
1428	CODE:	1772	CODE:
1429	{	1773	{
1430	int i;	1774	int i;
		1775	AV *av;
		1776
		1777	grp->errorno = errno;
		1778
1431	AV *av = newAV ();	1779	av = newAV ();
		1780	av_extend (av, items - 1);
1432		1781
1433	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1435		1784
1436	SvREFCNT_dec (grp->data);	1785	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1786	grp->sv1 = (SV *)av;
1438	}	1787	}
		1788
		1789	void
		1790	errno (aio_req grp, int errorno = errno)
		1791	CODE:
		1792	grp->errorno = errorno;
1439		1793
1440	void	1794	void
1441	limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1442	CODE:	1796	CODE:
1443	grp->fd2 = limit;	1797	eio_grp_limit (grp, limit);
1444	aio_grp_feed (grp);
1445		1798
1446	void	1799	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1800	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1801	CODE:
1449	{	1802	{
1450	SvREFCNT_dec (grp->fh2);	1803	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1804	grp->sv2 = newSVsv (callback);
		1805	grp->feed = aio_grp_feed;
1452		1806
1453	if (grp->fd2 <= 0)	1807	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1808	grp->int2 = 2;
1455		1809
1456	aio_grp_feed (grp);	1810	eio_grp_limit (grp, grp->int2);
1457	}	1811	}
1458		1812

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