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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.192 by root, Sun Jul 24 03:32:52 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	#ifndef PTHREAD_STACK_MIN	302	# define MAP_LOCKED 0
53	/* care for broken platforms, e.g. windows */
54	# define PTHREAD_STACK_MIN 16384
55	#endif	303	#endif
56		304	#ifndef MAP_NORESERVE
57	#if __ia64	305	# define MAP_NORESERVE 0
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif	306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
64		313
65	/* buffer size for various temporary buffers */	314	#ifndef makedev
66	#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
67		323
68	#define dBUF \	324	#ifndef PAGESIZE
69	char *aio_buf; \	325	# define PAGESIZE sysconf (_SC_PAGESIZE)
70	LOCK (wrklock); \	326	#endif
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75		327
76	enum {	328	enum {
77	REQ_QUIT,	329	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};	330	};
89		331
90	#define AIO_REQ_KLASS "IO::AIO::REQ"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"
92
93	typedef struct aio_cb
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;
98	SV *fh, *fh2;
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;
106	int type;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110
111	unsigned char flags;
112	unsigned char pri;
113
114	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
124		334
125	enum {	335	static SV *on_next_submit;
126	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	337	static int max_outstanding;
128		338
129	DEFAULT_PRI = 0,	339	static s_epipe respipe;
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		340
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	341	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
251		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	}
		355
252	/* must be called at most once */	356	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
254	{	358	{
255	if (!req->self)	359	if (!req->self)
256	{	360	{
257	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	363	}
260		364
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
262	}	366	}
263		367
264	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
265	{	369	{
266	MAGIC *mg;	370	MAGIC *mg;
267		371
268	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")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
270		377
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		379
273	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	381	}
275		382
276	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
277	{	384	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	385	if (grp->sv2 && SvOK (grp->sv2))
279	{	386	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	387	dSP;
285		388
286	ENTER;	389	ENTER;
287	SAVETMPS;	390	SAVETMPS;
288	PUSHMARK (SP);	391	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	393	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	395	SPAGAIN;
293	FREETMPS;	396	FREETMPS;
294	LEAVE;	397	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	398	}
305	}	399	}
306		400
307	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
308	{	402	{
309	--grp->length;	403	eio_submit (req);
310		404
311	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	406	{
317	req_invoke (grp);	407	dSP;
318	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);
319	}	415	}
320	}	416	}
321		417
322	static void poll_wait ()	418	static int req_invoke (eio_req *req)
323	{	419	{
324	fd_set rfd;	420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
325		422
326	while (nreqs)	423	if (!EIO_CANCELLED (req) && req->callback)
327	{	424	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;	425	dSP;
350		426	static SV *sv_result_cache; /* caches the result integer SV */
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	427	SV *sv_result;
352	{
353	errno = req->errorno;
354		428
355	ENTER;	429	ENTER;
356	SAVETMPS;	430	SAVETMPS;
357	PUSHMARK (SP);	431	PUSHMARK (SP);
358	EXTEND (SP, 1);	432	EXTEND (SP, 1);
359		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
360	switch (req->type)	447	switch (req->type)
361	{	448	{
362	case REQ_READDIR:	449	case EIO_READDIR:
363	{	450	{
364	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
365		452
366	if (req->result >= 0)	453	if (req->result >= 0)
367	{	454	{
368	int i;	455	int i;
369	char *buf = req->data2ptr;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	458	AV *av = newAV ();
371		459
372	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
373		461
374	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
375	{	463	{
376	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		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
378	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);
379	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
380	}	498	}
381		499
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	501	}
384		502
385	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))));
386	}	507	}
387	break;	508	break;
388		509
389	case REQ_OPEN:	510	case EIO_OPEN:
390	{	511	{
391	/* convert fd to fh */	512	/* convert fd to fh */
392	SV *fh;	513	SV *fh = &PL_sv_undef;
393		514
394	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
395	PUTBACK;	516	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
397	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);
398		524
399	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	);
400		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
401	PUSHMARK (SP);	537	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	538	}
404	break;	539	break;
405		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
406	case REQ_GROUP:	573	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
408		575
409	if (req->data)	576	if (req->sv1)
410	{	577	{
411	int i;	578	int i;
412	AV *av = (AV *)req->data;	579	AV *av = (AV *)req->sv1;
413		580
414	EXTEND (SP, AvFILL (av) + 1);	581	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
417	}	584	}
418	break;	585	break;
419		586
420	case REQ_NOP:	587	case EIO_NOP:
421	case REQ_BUSY:	588	case EIO_BUSY:
422	break;	589	break;
423		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
424	default:	622	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
426	break;	624	break;
427	}	625	}
428		626
		627	errno = req->errorno;
429		628
430	PUTBACK;	629	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	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;
433		637
434	FREETMPS;	638	FREETMPS;
435	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
436	}	642	}
437		643
438	if (req->grp)	644	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	645	}
458		646
459	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
460	{	648	{
461	if (req->self)	649	if (req->self)
462	{	650	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
465	}	653	}
466		654
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	655	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	656	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		658
476	Safefree (req);	659	Safefree (req);
477	}	660	}
478		661
479	static void req_cancel_subs (aio_req grp)	662	static void req_cancel_subs (aio_req grp)
480	{	663	{
481	aio_req sub;
482
483	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
484	return;	665	return;
485		666
486	SvREFCNT_dec (grp->fh2);	667	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	668	grp->sv2 = 0;
488		669
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	671	}
492		672
493	static void req_cancel (aio_req req)	673	static void create_respipe (void)
494	{	674	{
495	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
496		676	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	677	}
499		678
		679	static void poll_wait (void)
		680	{
		681	while (eio_nreqs ())
		682	{
		683	int size;
		684
		685	X_LOCK (reslock);
		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);
		695	}
		696	}
		697
500	static int poll_cb ()	698	static int poll_cb (void)
501	{	699	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)	700	for (;;)
508	{	701	{
509	LOCK (reslock);	702	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		703
512	if (req)	704	if (res > 0)
513	{
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;	705	croak (0);
527		706
528	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
529		709
530	if (req->type == REQ_QUIT)	710	poll_wait ();
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	711	}
559
560	return count;
561	}	712	}
562		713
563	static void *aio_proc(void *arg);	714	static void ecb_cold
564		715	reinit (void)
565	static void start_thread (void)
566	{	716	{
567	sigset_t fullsigset, oldsigset;	717	create_respipe ();
568	pthread_attr_t attr;
569		718
570	worker *wrk = calloc (1, sizeof (worker));	719	if (eio_init (want_poll, done_poll) < 0)
571		720	croak ("IO::AIO: unable to initialise eio library");
572	if (!wrk)
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{
586	wrk->prev = &wrk_first;
587	wrk->next = wrk_first.next;
588	wrk_first.next->prev = wrk;
589	wrk_first.next = wrk;
590	started++;
591	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}
598
599	static void req_send (aio_req req)
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603
604	++nreqs;
605
606	LOCK (reqlock);
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	req_send (req);
622	}
623
624	static void min_parallel (int nthreads)
625	{
626	if (wanted < nthreads)
627	wanted = nthreads;
628	}
629
630	static void max_parallel (int nthreads)
631	{
632	int cur = started;
633
634	if (wanted > nthreads)
635	wanted = nthreads;
636
637	while (cur > wanted)
638	{
639	end_thread ();
640	cur--;
641	}
642
643	while (started > wanted)
644	{
645	poll_wait ();
646	poll_cb ();
647	}
648	}
649
650	static void create_pipe ()
651	{
652	if (pipe (respipe))
653	croak ("unable to initialize result pipe");
654
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
659	croak ("cannot set result pipe to nonblocking mode");
660	}	721	}
661		722
662	/*****************************************************************************/	723	/*****************************************************************************/
663	/* work around various missing functions */
664		724
665	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
666	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
667	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
668
669	/*
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
677	{
678	ssize_t res;
679	off_t ooffset;
680
681	LOCK (preadwritelock);
682	ooffset = lseek (fd, 0, SEEK_CUR);
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687
688	return res;
689	}
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}
787
788	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);
790
791	# elif __solaris
792	{
793	struct sendfilevec vec;
794	size_t sbytes;
795
796	vec.sfv_fd = ifd;
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800
801	res = sendfilev (ofd, &vec, 1, &sbytes);
802
803	if (res < 0 && sbytes)
804	res = sbytes;
805	}
806
807	# endif	728	#endif
808	#else
809	res = -1;
810	errno = ENOSYS;
811	#endif
812		729
813	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
815	#if __solaris	732	# define PROT_NONE 0
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
817	#endif	737	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823		738
824	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
825		740
826	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
827	{	742	{
828	ssize_t cnt;	743	int old_errno = errno;
829		744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	745	errno = old_errno;
831		746
832	if (cnt <= 0)	747	mg->mg_obj = 0; /* just in case */
833	{
834	if (cnt && !res) res = -1;
835	break;
836	}
837		748
838	cnt = write (ofd, aio_buf, cnt);	749	SvREADONLY_off (sv);
839		750
840	if (cnt <= 0)	751	if (SvPVX (sv) != mg->mg_ptr)
841	{	752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
842	if (cnt && !res) res = -1;
843	break;
844	}
845		753
846	offset += cnt;	754	SvCUR_set (sv, 0);
847	res += cnt;	755	SvPVX (sv) = 0;
848	count -= cnt;	756	SvOK_off (sv);
849	}
850	}
851		757
852	return res;	758	return 0;
853	}	759	}
854		760
855	/* read a full directory */	761	static MGVTBL mmap_vtbl = {
856	static void scandir_ (aio_req req, worker *self)	762	0, 0, 0, 0, mmap_free
857	{	763	};
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916		764
917	/*****************************************************************************/	765	/*****************************************************************************/
918		766
919	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
920	{	768	{
921	aio_req req;	769	SvGETMAGIC (cb_sv);
922	int type;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	771	}
1069		772
1070	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1071	aio_req req; \	775	aio_req req; \
1072	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1074	\	778	\
1075	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	780	\
1078	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1079	if (!req) \	782	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1081	\	784	\
1082	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	786	req->pri = req_pri
1084		787
1085	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1086	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1087	\	792	\
1088	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1090		795
1091	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1092		797
1093	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1094		799
1095	BOOT:	800	BOOT:
1096	{	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
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		922
1102	create_pipe ();	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1104	}
1105		925
		926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		927
		928	reinit ();
		929	}
		930
1106	void	931	void
1107	min_parallel (nthreads)	932	reinit ()
1108	int nthreads	933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
		938	max_poll_reqs (unsigned int nreqs)
1109	PROTOTYPE: $	939	PROTOTYPE: $
		940	CODE:
		941	eio_set_max_poll_reqs (nreqs);
1110		942
1111	void	943	void
1112	max_parallel (nthreads)	944	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	945	PROTOTYPE: $
		946	CODE:
		947	eio_set_max_poll_time (nseconds);
1115		948
1116	void	949	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	950	min_parallel (unsigned int nthreads)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	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:
		977	max_outstanding = maxreqs;
		978
		979	void
		980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1123	PPCODE:	981	PPCODE:
1124	{	982	{
1125	dREQ;	983	dREQ;
1126		984
1127	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	988	req->int1 = flags;
1131	req->mode = mode;	989	req->int2 = mode;
1132		990
1133	REQ_SEND;	991	REQ_SEND;
1134	}	992	}
1135		993
1136	void	994	void
1137	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	996	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
		999	aio_syncfs = EIO_SYNCFS
1145	PPCODE:	1000	PPCODE:
1146	{	1001	{
		1002	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	1003	dREQ;
1148		1004
1149	req->type = ix;	1005	req->type = ix;
1150	req->fh = newSVsv (fh);	1006	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1007	req->int1 = fd;
1152		1008
1153	REQ_SEND (req);	1009	REQ_SEND (req);
1154	}	1010	}
1155		1011
1156	void	1012	void
		1013	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_SYNC_FILE_RANGE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->offs = offset;
		1023	req->size = nbytes;
		1024	req->int2 = flags;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	int fd = s_fileno_croak (fh, 0);
		1034	dREQ;
		1035
		1036	req->type = EIO_FALLOCATE;
		1037	req->sv1 = newSVsv (fh);
		1038	req->int1 = fd;
		1039	req->int2 = mode;
		1040	req->offs = offset;
		1041	req->size = len;
		1042
		1043	REQ_SEND (req);
		1044	}
		1045
		1046	void
		1047	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1048	PPCODE:
		1049	{
		1050	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1051	int fd = s_fileno_croak (fh, 0);
		1052	dREQ;
		1053
		1054	if (expect_false (close_fd < 0))
		1055	{
		1056	int pipefd [2];
		1057
		1058	if (
		1059	#ifdef _WIN32
		1060	_pipe (pipefd, 1, _O_BINARY) < 0
		1061	#else
		1062	pipe (pipefd) < 0
		1063	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1064	#endif
		1065	|| close (pipefd [1]) < 0
		1066	)
		1067	abort (); /*D*/
		1068
		1069	close_fd = pipefd [0];
		1070	}
		1071
		1072	req->type = EIO_DUP2;
		1073	req->int1 = close_fd;
		1074	req->sv2 = newSVsv (fh);
		1075	req->int2 = fd;
		1076
		1077	REQ_SEND (req);
		1078	}
		1079
		1080	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1081	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	1082	ALIAS:
1165	aio_read = REQ_READ	1083	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1084	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1085	PPCODE:
1169	{	1086	{
1170	aio_req req;
1171	STRLEN svlen;	1087	STRLEN svlen;
		1088	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1089	char *svptr = SvPVbyte (data, svlen);
1173		1090	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1091
1177	if (dataoffset < 0)	1092	if (dataoffset < 0)
1178	dataoffset += svlen;	1093	dataoffset += svlen;
1179		1094
1180	if (dataoffset < 0 || dataoffset > svlen)	1095	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1096	croak ("dataoffset outside of data scalar");
1182		1097
1183	if (ix == REQ_WRITE)	1098	if (ix == EIO_WRITE)
1184	{	1099	{
1185	/* write: check length and adjust. */	1100	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1101	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1102	len = svlen - dataoffset;
1188	}	1103	}
1189	else	1104	else
1190	{	1105	{
1191	/* read: grow scalar as necessary */	1106	/* read: check type and grow scalar as necessary */
		1107	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	1108	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1109	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1110
1198	{	1111	{
1199	dREQ;	1112	dREQ;
1200		1113
1201	req->type = ix;	1114	req->type = ix;
1202	req->fh = newSVsv (fh);	1115	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1116	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1117	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1118	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1119	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1120	req->ptr2 = (char *)svptr + dataoffset;
		1121	req->stroffset = dataoffset;
1209		1122
1210	if (!SvREADONLY (data))	1123	if (!SvREADONLY (data))
1211	{	1124	{
1212	SvREADONLY_on (data);	1125	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1126	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1127	}
1215		1128
1216	REQ_SEND;	1129	REQ_SEND;
1217	}	1130	}
1218	}	1131	}
1219		1132
1220	void	1133	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1134	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1222	SV * out_fh	1135	ALIAS:
1223	SV * in_fh	1136	aio_readlink = EIO_READLINK
1224	UV in_offset	1137	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1138	PPCODE:
1229	{	1139	{
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (path);
		1144	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int ifd = s_fileno_croak (in_fh , 0);
		1154	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1155	dREQ;
1231		1156
1232	req->type = REQ_SENDFILE;	1157	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1158	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1159	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1160	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1161	req->int2 = ifd;
1237	req->offset = in_offset;	1162	req->offs = in_offset;
1238	req->length = length;	1163	req->size = length;
1239		1164
1240	REQ_SEND;	1165	REQ_SEND;
1241	}	1166	}
1242		1167
1243	void	1168	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1169	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1170	PPCODE:
1251	{	1171	{
		1172	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1173	dREQ;
1253		1174
1254	req->type = REQ_READAHEAD;	1175	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1176	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1177	req->int1 = fd;
1257	req->offset = offset;	1178	req->offs = offset;
1258	req->length = length;	1179	req->size = length;
1259		1180
1260	REQ_SEND;	1181	REQ_SEND;
1261	}	1182	}
1262		1183
1263	void	1184	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1185	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1186	ALIAS:
1268	aio_stat = REQ_STAT	1187	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1188	aio_lstat = EIO_LSTAT
		1189	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1190	PPCODE:
1271	{	1191	{
1272	dREQ;	1192	dREQ;
1273		1193
1274	New (0, req->statdata, 1, Stat_t);	1194	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		1195
1281	if (SvPOK (fh_or_path))	1196	if (SvPOK (req->sv1))
1282	{	1197	{
1283	req->type = ix;	1198	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1199	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1200	}
1287	else	1201	else
1288	{	1202	{
1289	req->type = REQ_FSTAT;	1203	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1204	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1205	}
1293		1206
1294	REQ_SEND;	1207	REQ_SEND;
1295	}	1208	}
1296		1209
		1210	UV
		1211	major (UV dev)
		1212	ALIAS:
		1213	minor = 1
		1214	CODE:
		1215	RETVAL = ix ? major (dev) : minor (dev);
		1216	OUTPUT:
		1217	RETVAL
		1218
		1219	UV
		1220	makedev (UV maj, UV min)
		1221	CODE:
		1222	RETVAL = makedev (maj, min);
		1223	OUTPUT:
		1224	RETVAL
		1225
1297	void	1226	void
		1227	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	dREQ;
		1231
		1232	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1233	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1234	req->sv1 = newSVsv (fh_or_path);
		1235
		1236	if (SvPOK (req->sv1))
		1237	{
		1238	req->type = EIO_UTIME;
		1239	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1240	}
		1241	else
		1242	{
		1243	req->type = EIO_FUTIME;
		1244	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1245	}
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	dREQ;
		1255
		1256	req->sv1 = newSVsv (fh_or_path);
		1257	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1258
		1259	if (SvPOK (req->sv1))
		1260	{
		1261	req->type = EIO_TRUNCATE;
		1262	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1263	}
		1264	else
		1265	{
		1266	req->type = EIO_FTRUNCATE;
		1267	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1268	}
		1269
		1270	REQ_SEND;
		1271	}
		1272
		1273	void
		1274	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1275	ALIAS:
		1276	aio_chmod = EIO_CHMOD
		1277	aio_mkdir = EIO_MKDIR
		1278	PPCODE:
		1279	{
		1280	dREQ;
		1281
		1282	req->int2 = mode;
		1283	req->sv1 = newSVsv (fh_or_path);
		1284
		1285	if (SvPOK (req->sv1))
		1286	{
		1287	req->type = ix;
		1288	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1289	}
		1290	else
		1291	{
		1292	req->type = EIO_FCHMOD;
		1293	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1294	}
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
		1300	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1306	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1307	req->sv1 = newSVsv (fh_or_path);
		1308
		1309	if (SvPOK (req->sv1))
		1310	{
		1311	req->type = EIO_CHOWN;
		1312	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1313	}
		1314	else
		1315	{
		1316	req->type = EIO_FCHOWN;
		1317	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1318	}
		1319
		1320	REQ_SEND;
		1321	}
		1322
		1323	void
		1324	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1325	PPCODE:
		1326	{
		1327	dREQ;
		1328
		1329	req->type = EIO_READDIR;
		1330	req->sv1 = newSVsv (pathname);
		1331	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1332	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1333
		1334	if (flags & EIO_READDIR_DENTS)
		1335	req->int1 |= EIO_READDIR_CUSTOM2;
		1336
		1337	REQ_SEND;
		1338	}
		1339
		1340	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1341	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1342	ALIAS:
1302	aio_unlink = REQ_UNLINK	1343	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1344	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1345	aio_readdir = EIO_READDIR
1305	PPCODE:	1346	PPCODE:
1306	{	1347	{
1307	dREQ;	1348	dREQ;
1308		1349
1309	req->type = ix;	1350	req->type = ix;
1310	req->data = newSVsv (pathname);	1351	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1352	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1353
1313	REQ_SEND;	1354	REQ_SEND;
1314	}	1355	}
1315		1356
1316	void	1357	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1358	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1359	ALIAS:
1322	aio_link = REQ_LINK	1360	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1361	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1362	aio_rename = EIO_RENAME
1325	PPCODE:	1363	PPCODE:
1326	{	1364	{
1327	dREQ;	1365	dREQ;
1328		1366
1329	req->type = ix;	1367	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1368	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1369	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1370	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1371	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1372
1335	REQ_SEND;	1373	REQ_SEND;
1336	}	1374	}
1337		1375
1338	void	1376	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1377	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1378	PPCODE:
1343	{	1379	{
1344	dREQ;	1380	dREQ;
1345		1381
1346	req->type = REQ_BUSY;	1382	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1383	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1384	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1385	req->int2 = (mode_t)mode;
		1386	req->offs = dev;
		1387
1350	REQ_SEND;	1388	REQ_SEND;
1351	}	1389	}
1352		1390
1353	void	1391	void
1354	aio_group (callback=&PL_sv_undef)	1392	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1355	SV * callback	1393	ALIAS:
1356	PROTOTYPE: ;$	1394	aio_mtouch = EIO_MTOUCH
		1395	aio_msync = EIO_MSYNC
1357	PPCODE:	1396	PPCODE:
1358	{	1397	{
		1398	STRLEN svlen;
		1399	char *svptr = SvPVbyte (data, svlen);
		1400	UV len = SvUV (length);
		1401
		1402	if (offset < 0)
		1403	offset += svlen;
		1404
		1405	if (offset < 0 || offset > svlen)
		1406	croak ("offset outside of scalar");
		1407
		1408	if (!SvOK (length) || len + offset > svlen)
		1409	len = svlen - offset;
		1410
		1411	{
		1412	dREQ;
		1413
		1414	req->type = ix;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418	req->int1 = flags;
		1419
		1420	REQ_SEND;
		1421	}
		1422	}
		1423
		1424	void
		1425	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1426	PPCODE:
		1427	{
		1428	STRLEN svlen;
		1429	char *svptr = SvPVbyte (data, svlen);
		1430	UV len = SvUV (length);
		1431
		1432	if (offset < 0)
		1433	offset += svlen;
		1434
		1435	if (offset < 0 || offset > svlen)
		1436	croak ("offset outside of scalar");
		1437
		1438	if (!SvOK (length) || len + offset > svlen)
		1439	len = svlen - offset;
		1440
		1441	{
		1442	dREQ;
		1443
		1444	req->type = EIO_MLOCK;
		1445	req->sv2 = SvREFCNT_inc (data);
		1446	req->ptr2 = (char *)svptr + offset;
		1447	req->size = len;
		1448
		1449	REQ_SEND;
		1450	}
		1451	}
		1452
		1453	void
		1454	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1455	PPCODE:
		1456	{
		1457	dREQ;
		1458
		1459	req->type = EIO_MLOCKALL;
		1460	req->int1 = flags;
		1461
		1462	REQ_SEND;
		1463	}
		1464
		1465	void
		1466	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1467	PPCODE:
		1468	{
1359	dREQ;	1469	dREQ;
1360		1470
		1471	req->type = EIO_BUSY;
		1472	req->nv1 = delay < 0. ? 0. : delay;
		1473
		1474	REQ_SEND;
		1475	}
		1476
		1477	void
		1478	aio_group (SV *callback=&PL_sv_undef)
		1479	PPCODE:
		1480	{
		1481	dREQ;
		1482
1361	req->type = REQ_GROUP;	1483	req->type = EIO_GROUP;
		1484
1362	req_send (req);	1485	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1486	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1487	}
1366		1488
1367	void	1489	void
1368	aio_nop (callback=&PL_sv_undef)	1490	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1491	ALIAS:
		1492	aio_nop = EIO_NOP
		1493	aio_sync = EIO_SYNC
1370	PPCODE:	1494	PPCODE:
1371	{	1495	{
1372	dREQ;	1496	dREQ;
1373		1497
1374	req->type = REQ_NOP;	1498	req->type = ix;
1375		1499
1376	REQ_SEND;	1500	REQ_SEND;
1377	}	1501	}
1378		1502
1379	void	1503	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1504	aioreq_pri (int pri = 0)
1381	CODE:	1505	CODE:
		1506	RETVAL = next_pri;
		1507	if (items > 0)
		1508	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1509	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1510	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1511	next_pri = pri;
		1512	}
		1513	OUTPUT:
		1514	RETVAL
1385		1515
1386	void	1516	void
1387	aioreq_nice (int nice = 0)	1517	aioreq_nice (int nice = 0)
1388	CODE:	1518	CODE:
1389	nice = next_pri - nice;	1519	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1520	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1521	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1522	next_pri = nice;
1393		1523
1394	void	1524	void
1395	flush ()	1525	flush ()
1396	PROTOTYPE:
1397	CODE:	1526	CODE:
1398	while (nreqs)	1527	while (eio_nreqs ())
1399	{	1528	{
1400	poll_wait ();	1529	poll_wait ();
1401	poll_cb ();	1530	poll_cb ();
1402	}	1531	}
1403		1532
1404	void
1405	poll()
1406	PROTOTYPE:
1407	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();
1411	poll_cb ();
1412	}
1413
1414	int	1533	int
1415	poll_fileno()	1534	poll ()
1416	PROTOTYPE:
1417	CODE:	1535	CODE:
1418	RETVAL = respipe [0];	1536	poll_wait ();
1419	OUTPUT:
1420	RETVAL
1421
1422	int
1423	poll_cb(...)
1424	PROTOTYPE:
1425	CODE:
1426	RETVAL = poll_cb ();	1537	RETVAL = poll_cb ();
1427	OUTPUT:	1538	OUTPUT:
1428	RETVAL	1539	RETVAL
1429		1540
1430	void
1431	poll_wait()
1432	PROTOTYPE:
1433	CODE:
1434	if (nreqs)
1435	poll_wait ();
1436
1437	int	1541	int
1438	nreqs()	1542	poll_fileno ()
1439	PROTOTYPE:
1440	CODE:	1543	CODE:
1441	RETVAL = nreqs;	1544	RETVAL = s_epipe_fd (&respipe);
1442	OUTPUT:	1545	OUTPUT:
1443	RETVAL	1546	RETVAL
1444		1547
		1548	int
		1549	poll_cb (...)
		1550	PROTOTYPE:
		1551	CODE:
		1552	RETVAL = poll_cb ();
		1553	OUTPUT:
		1554	RETVAL
		1555
		1556	void
		1557	poll_wait ()
		1558	CODE:
		1559	poll_wait ();
		1560
		1561	int
		1562	nreqs ()
		1563	CODE:
		1564	RETVAL = eio_nreqs ();
		1565	OUTPUT:
		1566	RETVAL
		1567
		1568	int
		1569	nready ()
		1570	CODE:
		1571	RETVAL = eio_nready ();
		1572	OUTPUT:
		1573	RETVAL
		1574
		1575	int
		1576	npending ()
		1577	CODE:
		1578	RETVAL = eio_npending ();
		1579	OUTPUT:
		1580	RETVAL
		1581
		1582	int
		1583	nthreads ()
		1584	CODE:
		1585	RETVAL = eio_nthreads ();
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1591	CODE:
		1592	RETVAL = posix_fadvise (fh, offset, length, advice);
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	IV
		1597	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1598	CODE:
		1599	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1605	PPCODE:
		1606	sv_unmagic (scalar, MMAP_MAGIC);
		1607	{
		1608	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1609	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1610	if (addr == (void *)-1)
		1611	XSRETURN_NO;
		1612
		1613	sv_force_normal (scalar);
		1614
		1615	/* we store the length in mg_obj, as namlen is I32 :/ */
		1616	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1617	->mg_obj = (SV *)length;
		1618
		1619	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1620
		1621	if (!(prot & PROT_WRITE))
		1622	SvREADONLY_on (scalar);
		1623
		1624	if (SvLEN (scalar))
		1625	Safefree (SvPVX (scalar));
		1626
		1627	SvPVX (scalar) = (char *)addr;
		1628	SvCUR_set (scalar, length);
		1629	SvLEN_set (scalar, 0);
		1630	SvPOK_only (scalar);
		1631
		1632	XSRETURN_YES;
		1633	}
		1634
		1635	void
		1636	munmap (SV *scalar)
		1637	CODE:
		1638	sv_unmagic (scalar, MMAP_MAGIC);
		1639
		1640	int
		1641	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1642	ALIAS:
		1643	mprotect = 1
		1644	CODE:
		1645	{
		1646	STRLEN svlen;
		1647	void *addr = SvPVbyte (scalar, svlen);
		1648	size_t len = SvUV (length);
		1649
		1650	if (offset < 0)
		1651	offset += svlen;
		1652
		1653	if (offset < 0 || offset > svlen)
		1654	croak ("offset outside of scalar");
		1655
		1656	if (!SvOK (length) || len + offset > svlen)
		1657	len = svlen - offset;
		1658
		1659	addr = (void *)(((intptr_t)addr) + offset);
		1660	eio_page_align (&addr, &len);
		1661
		1662	switch (ix)
		1663	{
		1664	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1665	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1666	}
		1667	}
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	int
		1672	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1673	CODE:
		1674	{
		1675	STRLEN svlen;
		1676	void *addr = SvPVbyte (scalar, svlen);
		1677	size_t len = SvUV (length);
		1678
		1679	if (offset < 0)
		1680	offset += svlen;
		1681
		1682	if (offset < 0 || offset > svlen)
		1683	croak ("offset outside of scalar");
		1684
		1685	if (!SvOK (length) || len + offset > svlen)
		1686	len = svlen - offset;
		1687
		1688	addr = (void *)(((intptr_t)addr) + offset);
		1689	eio_page_align (&addr, &len);
		1690	#if _POSIX_MEMLOCK_RANGE
		1691	RETVAL = munlock (addr, len);
		1692	#else
		1693	RETVAL = ((errno = ENOSYS), -1);
		1694	#endif
		1695	}
		1696	OUTPUT:
		1697	RETVAL
		1698
		1699	int
		1700	munlockall ()
		1701	CODE:
		1702	#if _POSIX_MEMLOCK
		1703	munlockall ();
		1704	#else
		1705	RETVAL = -1;
		1706	errno = ENOSYS;
		1707	#endif
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	void _on_next_submit (SV *cb)
		1712	CODE:
		1713	SvREFCNT_dec (on_next_submit);
		1714	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1715
1445	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1446		1717
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1719
1449	void	1720	void
1450	cancel (aio_req_ornot req)	1721	cancel (aio_req_ornot req)
1451	CODE:	1722	CODE:
1452	req_cancel (req);	1723	eio_cancel (req);
1453		1724
1454	void	1725	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1727	PPCODE:
		1728	{
		1729	if (GIMME_V != G_VOID)
		1730	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1731
		1732	if (items > 1)
		1733	{
		1734	SV *cb_cv =get_cb (callback);
		1735
1457	SvREFCNT_dec (req->callback);	1736	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1737	req->callback = SvREFCNT_inc (cb_cv);
		1738	}
		1739	}
1459		1740
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1741	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1742
1462	void	1743	void
1463	add (aio_req grp, ...)	1744	add (aio_req grp, ...)
1464	PPCODE:	1745	PPCODE:
1465	{	1746	{
1466	int i;	1747	int i;
1467	aio_req req;
1468		1748
1469	if (grp->fd == 2)	1749	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1750	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1751
1472	for (i = 1; i < items; ++i )	1752	for (i = 1; i < items; ++i )
1473	{	1753	{
		1754	aio_req req;
		1755
1474	if (GIMME_V != G_VOID)	1756	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1757	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1758
1477	req = SvAIO_REQ (ST (i));	1759	req = SvAIO_REQ (ST (i));
1478		1760
1479	if (req)	1761	if (req)
1480	{	1762	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1763	}
1493	}	1764	}
1494		1765
1495	void	1766	void
1496	cancel_subs (aio_req_ornot req)	1767	cancel_subs (aio_req_ornot req)
…		…
1500	void	1771	void
1501	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1502	CODE:	1773	CODE:
1503	{	1774	{
1504	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1505	AV *av = newAV ();	1780	av = newAV ();
		1781	av_extend (av, items - 1);
1506		1782
1507	for (i = 1; i < items; ++i )	1783	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1784	av_push (av, newSVsv (ST (i)));
1509		1785
1510	SvREFCNT_dec (grp->data);	1786	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1787	grp->sv1 = (SV *)av;
1512	}	1788	}
		1789
		1790	void
		1791	errno (aio_req grp, int errorno = errno)
		1792	CODE:
		1793	grp->errorno = errorno;
1513		1794
1514	void	1795	void
1515	limit (aio_req grp, int limit)	1796	limit (aio_req grp, int limit)
1516	CODE:	1797	CODE:
1517	grp->fd2 = limit;	1798	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1799
1520	void	1800	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1802	CODE:
1523	{	1803	{
1524	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
		1806	grp->feed = aio_grp_feed;
1526		1807
1527	if (grp->fd2 <= 0)	1808	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1809	grp->int2 = 2;
1529		1810
1530	aio_grp_feed (grp);	1811	eio_grp_limit (grp, grp->int2);
1531	}	1812	}
1532		1813

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