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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.3 by root, Sun Jul 10 20:07:11 2005 UTC vs.
Revision 1.139 by root, Tue Apr 21 20:12:56 2009 UTC

1	#define PERL_NO_GET_CONTEXT	1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
		9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
7	#include <sys/types.h>	12	#include <sys/types.h>
8	#include <sys/stat.h>	13	#include <sys/stat.h>
9	#include <unistd.h>	14	#include <limits.h>
10	#include <fcntl.h>	15	#include <fcntl.h>
11	#include <signal.h>
12	#include <sched.h>	16	#include <sched.h>
13	#include <endian.h>
14		17
15	#include <pthread.h>	18	/* perl namespace pollution */
16	#include <sys/syscall.h>	19	#undef VERSION
17		20
18	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	21	#ifdef _WIN32
19	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
20	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
21		22
22	#if __i386 || __amd64	23	# define EIO_STRUCT_DIRENT Direntry_t
23	# define STACKSIZE ( 256 * sizeof (long))	24	# undef malloc
24	#elif __ia64	25	# undef free
25	# define STACKSIZE (8192 * sizeof (long))	26
		27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
26	#else	59	#else
27	# define STACKSIZE ( 512 * sizeof (long))	60
		61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
28	#endif	68	#endif
29		69
		70	/* perl stupidly overrides readdir and maybe others */
		71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	static HV *stash;
		99	typedef SV SV8; /* byte-sv, used for argument-checking */
		100
		101	#define AIO_REQ_KLASS "IO::AIO::REQ"
		102	#define AIO_GRP_KLASS "IO::AIO::GRP"
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/eio.h"
		113
		114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
		118
30	enum {	119	enum {
31	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35	REQ_FSYNC, REQ_FDATASYNC,
36	};	121	};
37		122
38	typedef struct aio_cb {	123	#include "libeio/eio.c"
39	struct aio_cb *volatile next;
40		124
41	int type;
42
43	int fd;
44	off_t offset;
45	size_t length;
46	ssize_t result;
47	mode_t mode; /* open */
48	int errorno;
49	SV *data, *callback;
50	void *dataptr;
51	STRLEN dataoffset;
52
53	Stat_t *statdata;
54	} aio_cb;
55
56	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
57		127
58	static int started;	128	static SV *on_next_submit;
59	static int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
60	static int respipe [2];	130	static int max_outstanding;
61		131
62	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
63	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
64	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
65		133
66	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
67	static volatile aio_req ress, rese; /* queue start, queue end */	135	static void req_cancel (aio_req req);
68		136
69	static void *aio_proc(void *arg);	137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
		150
		151	/* must be called at most once */
		152	static SV *req_sv (aio_req req, const char *klass)
		153	{
		154	if (!req->self)
		155	{
		156	req->self = (SV *)newHV ();
		157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		158	}
		159
		160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		161	}
		162
		163	static aio_req SvAIO_REQ (SV *sv)
		164	{
		165	MAGIC *mg;
		166
		167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		168	croak ("object of class " AIO_REQ_KLASS " expected");
		169
		170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		171
		172	return mg ? (aio_req)mg->mg_ptr : 0;
		173	}
		174
		175	static void aio_grp_feed (aio_req grp)
		176	{
		177	if (grp->sv2 && SvOK (grp->sv2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191	}
		192
		193	static void req_submit (eio_req *req)
		194	{
		195	eio_submit (req);
		196
		197	if (expect_false (on_next_submit))
		198	{
		199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
		207	}
		208	}
		209
		210	static int req_invoke (eio_req *req)
		211	{
		212	dSP;
		213
		214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
		218	{
		219	ENTER;
		220	SAVETMPS;
		221	PUSHMARK (SP);
		222	EXTEND (SP, 1);
		223
		224	switch (req->type)
		225	{
		226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
		229
		230	if (req->result >= 0)
		231	{
		232	int i;
		233	char *buf = req->ptr2;
		234	AV *av = newAV ();
		235
		236	av_extend (av, req->result - 1);
		237
		238	for (i = 0; i < req->result; ++i)
		239	{
		240	SV *sv = newSVpv (buf, 0);
		241
		242	av_store (av, i, sv);
		243	buf += SvCUR (sv) + 1;
		244	}
		245
		246	rv = sv_2mortal (newRV_noinc ((SV *)av));
		247	}
		248
		249	PUSHs (rv);
		250	}
		251	break;
		252
		253	case EIO_OPEN:
		254	{
		255	/* convert fd to fh */
		256	SV *fh = &PL_sv_undef;
		257
		258	if (req->result >= 0)
		259	{
		260	GV *gv = (GV *)sv_newmortal ();
		261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		262	char sym [64];
		263	int symlen;
		264
		265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		266	gv_init (gv, stash, sym, symlen, 0);
		267
		268	symlen = snprintf (
		269	sym,
		270	sizeof (sym),
		271	"%s&=%d",
		272	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		273	req->result
		274	);
		275
		276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		277	fh = (SV *)gv;
		278	}
		279
		280	PUSHs (fh);
		281	}
		282	break;
		283
		284	case EIO_GROUP:
		285	req->int1 = 2; /* mark group as finished */
		286
		287	if (req->sv1)
		288	{
		289	int i;
		290	AV *av = (AV *)req->sv1;
		291
		292	EXTEND (SP, AvFILL (av) + 1);
		293	for (i = 0; i <= AvFILL (av); ++i)
		294	PUSHs (*av_fetch (av, i, 0));
		295	}
		296	break;
		297
		298	case EIO_NOP:
		299	case EIO_BUSY:
		300	break;
		301
		302	case EIO_READLINK:
		303	if (req->result > 0)
		304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		305	break;
		306
		307	case EIO_STAT:
		308	case EIO_LSTAT:
		309	case EIO_FSTAT:
		310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		311	PL_laststatval = req->result;
		312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		313	PUSHs (sv_2mortal (newSViv (req->result)));
		314	break;
		315
		316	case EIO_READ:
		317	{
		318	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		319	*SvEND (req->sv2) = 0;
		320	SvPOK_only (req->sv2);
		321	SvSETMAGIC (req->sv2);
		322	PUSHs (sv_2mortal (newSViv (req->result)));
		323	}
		324	break;
		325
		326	case EIO_DUP2:
		327	if (req->result > 0)
		328	req->result = 0;
		329	/* FALLTHROUGH */
		330
		331	default:
		332	PUSHs (sv_2mortal (newSViv (req->result)));
		333	break;
		334	}
		335
		336	errno = req->errorno;
		337
		338	PUTBACK;
		339	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		340	SPAGAIN;
		341
		342	FREETMPS;
		343	LEAVE;
		344
		345	PUTBACK;
		346	}
		347
		348	return !!SvTRUE (ERRSV);
		349	}
		350
		351	static void req_destroy (aio_req req)
		352	{
		353	if (req->self)
		354	{
		355	sv_unmagic (req->self, PERL_MAGIC_ext);
		356	SvREFCNT_dec (req->self);
		357	}
		358
		359	SvREFCNT_dec (req->sv1);
		360	SvREFCNT_dec (req->sv2);
		361	SvREFCNT_dec (req->callback);
		362
		363	Safefree (req);
		364	}
		365
		366	static void req_cancel_subs (aio_req grp)
		367	{
		368	aio_req sub;
		369
		370	if (grp->type != EIO_GROUP)
		371	return;
		372
		373	SvREFCNT_dec (grp->sv2);
		374	grp->sv2 = 0;
		375
		376	eio_grp_cancel (grp);
		377	}
		378
		379	#ifdef USE_SOCKETS_AS_HANDLES
		380	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		381	#else
		382	# define TO_SOCKET(x) (x)
		383	#endif
70		384
71	static void	385	static void
72	start_thread (void)	386	create_respipe (void)
73	{	387	{
74	sigset_t fullsigset, oldsigset;	388	int old_readfd = respipe [0];
75	pthread_t tid;
76	pthread_attr_t attr;
77		389
78	pthread_attr_init (&attr);	390	if (respipe [1] >= 0)
79	pthread_attr_setstacksize (&attr, STACKSIZE);	391	respipe_close (TO_SOCKET (respipe [1]));
80	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
81		392
82	sigfillset (&fullsigset);	393	#ifdef _WIN32
83	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	394	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		395	#else
		396	if (pipe (respipe))
		397	#endif
		398	croak ("unable to initialize result pipe");
84		399
85	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	400	if (old_readfd >= 0)
86	started++;
87
88	sigprocmask (SIG_SETMASK, &oldsigset, 0);
89	}
90
91	static void
92	send_req (aio_req req)
93	{
94	nreqs++;
95
96	pthread_mutex_lock (&reqlock);
97
98	req->next = 0;
99
100	if (reqe)
101	{	401	{
102	reqe->next = req;	402	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
103	reqe = req;	403	croak ("unable to initialize result pipe(2)");
		404
		405	respipe_close (respipe [0]);
		406	respipe [0] = old_readfd;
104	}	407	}
105	else
106	reqe = reqs = req;
107		408
108	pthread_cond_signal (&reqwait);	409	#ifdef _WIN32
109	pthread_mutex_unlock (&reqlock);	410	int arg = 1;
110	}	411	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		412	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		413	#else
		414	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		415	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		416	#endif
		417	croak ("unable to initialize result pipe(3)");
111		418
112	static void	419	respipe_osf [0] = TO_SOCKET (respipe [0]);
113	end_thread (void)	420	respipe_osf [1] = TO_SOCKET (respipe [1]);
114	{
115	aio_req req;
116	New (0, req, 1, aio_cb);
117	req->type = REQ_QUIT;
118
119	send_req (req);
120	}	421	}
121		422
122	static void	423	static void poll_wait (void)
123	read_write (pTHX_
124	int dowrite, int fd, off_t offset, size_t length,
125	SV *data, STRLEN dataoffset, SV *callback)
126	{	424	{
127	aio_req req;	425	fd_set rfd;
128	STRLEN svlen;
129	char *svptr = SvPV (data, svlen);
130		426
131	SvUPGRADE (data, SVt_PV);	427	while (eio_nreqs ())
132	SvPOK_on (data);
133
134	if (dataoffset < 0)
135	dataoffset += svlen;
136
137	if (dataoffset < 0 || dataoffset > svlen)
138	croak ("data offset outside of string");
139
140	if (dowrite)
141	{	428	{
142	/* write: check length and adjust. */	429	int size;
143	if (length < 0 || length + dataoffset > svlen)	430
144	length = svlen - dataoffset;	431	X_LOCK (reslock);
		432	size = res_queue.size;
		433	X_UNLOCK (reslock);
		434
		435	if (size)
		436	return;
		437
		438	etp_maybe_start_thread ();
		439
		440	FD_ZERO (&rfd);
		441	FD_SET (respipe [0], &rfd);
		442
		443	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
145	}	444	}
146	else
147	{
148	/* read: grow scalar as necessary */
149	svptr = SvGROW (data, length + dataoffset);
150	}
151
152	if (length < 0)
153	croak ("length must not be negative");
154
155	Newz (0, req, 1, aio_cb);
156
157	if (!req)
158	croak ("out of memory during aio_req allocation");
159
160	req->type = dowrite ? REQ_WRITE : REQ_READ;
161	req->fd = fd;
162	req->offset = offset;
163	req->length = length;
164	req->data = SvREFCNT_inc (data);
165	req->dataptr = (char *)svptr + dataoffset;
166	req->callback = SvREFCNT_inc (callback);
167
168	send_req (req);
169	}	445	}
170		446
171	static void	447	static int poll_cb (void)
172	poll_wait ()
173	{	448	{
174	if (!nreqs)
175	return;
176
177	fd_set rfd;
178	FD_ZERO(&rfd);
179	FD_SET(respipe [0], &rfd);
180
181	select (respipe [0] + 1, &rfd, 0, 0, 0);
182	}
183
184	static int
185	poll_cb (pTHX)
186	{
187	dSP;
188	int count = 0;
189	aio_req req;
190
191	{
192	/* read and signals sent by the worker threads */
193	char buf [32];
194	while (read (respipe [0], buf, 32) > 0)
195	;
196	}
197
198	for (;;)	449	for (;;)
199	{	450	{
200	pthread_mutex_lock (&reslock);	451	int res = eio_poll ();
201		452
202	req = ress;
203
204	if (ress)	453	if (res > 0)
205	{
206	ress = ress->next;
207	if (!ress) rese = 0;
208	}
209
210	pthread_mutex_unlock (&reslock);
211
212	if (!req)
213	break;	454	croak (0);
214		455
215	nreqs--;	456	if (!max_outstanding || max_outstanding > eio_nreqs ())
		457	return res;
216		458
217	if (req->type == REQ_QUIT)	459	poll_wait ();
218	started--;
219	else
220	{
221	int errorno = errno;
222	errno = req->errorno;
223
224	if (req->type == REQ_READ)
225	SvCUR_set (req->data, req->dataoffset
226	+ req->result > 0 ? req->result : 0);
227
228	if (req->data)
229	SvREFCNT_dec (req->data);
230
231	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
232	{
233	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
234	PL_laststatval = req->result;
235	PL_statcache = *(req->statdata);
236
237	Safefree (req->statdata);
238	}
239
240	PUSHMARK (SP);
241	XPUSHs (sv_2mortal (newSViv (req->result)));
242
243	if (req->type == REQ_OPEN)
244	{
245	/* convert fd to fh */
246	SV *fh;
247
248	PUTBACK;
249	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
250	SPAGAIN;
251
252	fh = POPs;
253
254	PUSHMARK (SP);
255	XPUSHs (fh);
256	}
257
258	PUTBACK;
259	call_sv (req->callback, G_VOID | G_EVAL);
260	SPAGAIN;
261
262	if (req->callback)
263	SvREFCNT_dec (req->callback);
264
265	errno = errorno;
266	count++;
267	}
268
269	Safefree (req);
270	}	460	}
271
272	return count;
273	}	461	}
274		462
		463	static void atfork_child (void)
		464	{
		465	create_respipe ();
		466	}
		467
275	static void *	468	static SV *
276	aio_proc (void *thr_arg)	469	get_cb (SV *cb_sv)
277	{	470	{
		471	HV *st;
		472	GV *gvp;
		473	CV *cv;
		474
		475	if (!SvOK (cb_sv))
		476	return 0;
		477
		478	cv = sv_2cv (cb_sv, &st, &gvp, 0);
		479
		480	if (!cv)
		481	croak ("IO::AIO callback must be undef or a CODE reference");
		482
		483	return (SV *)cv;
		484	}
		485
		486	#define dREQ \
		487	SV *cb_cv; \
278	aio_req req;	488	aio_req req; \
279	int type;	489	int req_pri = next_pri; \
		490	next_pri = EIO_PRI_DEFAULT; \
		491	\
		492	cb_cv = get_cb (callback); \
		493	\
		494	Newz (0, req, 1, eio_req); \
		495	if (!req) \
		496	croak ("out of memory during eio_req allocation"); \
		497	\
		498	req->callback = SvREFCNT_inc (cb_cv); \
		499	req->pri = req_pri
280		500
281	do	501	#define REQ_SEND \
282	{	502	PUTBACK; \
283	pthread_mutex_lock (&reqlock);	503	req_submit (req); \
		504	SPAGAIN; \
		505	\
		506	if (GIMME_V != G_VOID) \
		507	XPUSHs (req_sv (req, AIO_REQ_KLASS));
284		508
285	for (;;)	509	static int
286	{	510	extract_fd (SV *fh, int wr)
287	req = reqs;	511	{
		512	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
288		513
289	if (reqs)	514	if (fd < 0)
290	{	515	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
291	reqs = reqs->next;
292	if (!reqs) reqe = 0;
293	}
294		516
295	if (req)	517	return fd;
296	break;	518	}
297		519
298	pthread_cond_wait (&reqwait, &reqlock);	520	MODULE = IO::AIO PACKAGE = IO::AIO
299	}
300		521
301	pthread_mutex_unlock (&reqlock);	522	PROTOTYPES: ENABLE
302
303	errno = 0; /* strictly unnecessary */
304		523
305	type = req->type;	524	BOOT:
		525	{
		526	stash = gv_stashpv ("IO::AIO", 1);
306		527
307	switch (type)	528	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
308	{	529	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
309	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	530	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
310	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	531	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
311	#if SYS_readahead	532	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
312	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	533	#ifndef _WIN32
313	#else	534	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
314	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
315	#endif	535	#endif
		536	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		537	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		538	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		539	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
316		540
317	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	541	create_respipe ();
318	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
319	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
320		542
321	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	543	if (eio_init (want_poll, done_poll) < 0)
322	case REQ_CLOSE: req->result = close (req->fd); break;	544	croak ("IO::AIO: unable to initialise eio library");
323	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
324		545
325	case REQ_FSYNC: req->result = fsync (req->fd); break;	546	/* atfork child called in fifo order, so before eio's handler */
326	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	547	X_THREAD_ATFORK (0, 0, atfork_child);
327
328	case REQ_QUIT:
329	break;
330
331	default:
332	req->result = ENOSYS;
333	break;
334	}
335
336	req->errorno = errno;
337
338	pthread_mutex_lock (&reslock);
339
340	req->next = 0;
341
342	if (rese)
343	{
344	rese->next = req;
345	rese = req;
346	}
347	else
348	{
349	rese = ress = req;
350
351	/* write a dummy byte to the pipe so fh becomes ready */
352	write (respipe [1], &respipe, 1);
353	}
354
355	pthread_mutex_unlock (&reslock);
356	}
357	while (type != REQ_QUIT);
358
359	return 0;
360	}	548	}
361		549
362	MODULE = IO::AIO PACKAGE = IO::AIO
363
364	BOOT:
365	{
366	if (pipe (respipe))
367	croak ("unable to initialize result pipe");
368
369	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
370	croak ("cannot set result pipe to nonblocking mode");
371
372	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
373	croak ("cannot set result pipe to nonblocking mode");
374	}
375
376	void	550	void
377	min_parallel(nthreads)	551	max_poll_reqs (int nreqs)
378	int nthreads
379	PROTOTYPE: $	552	PROTOTYPE: $
380	CODE:	553	CODE:
381	while (nthreads > started)	554	eio_set_max_poll_reqs (nreqs);
382	start_thread ();
383		555
384	void	556	void
385	max_parallel(nthreads)	557	max_poll_time (double nseconds)
386	int nthreads
387	PROTOTYPE: $	558	PROTOTYPE: $
388	CODE:	559	CODE:
		560	eio_set_max_poll_time (nseconds);
		561
		562	void
		563	min_parallel (int nthreads)
		564	PROTOTYPE: $
		565	CODE:
		566	eio_set_min_parallel (nthreads);
		567
		568	void
		569	max_parallel (int nthreads)
		570	PROTOTYPE: $
		571	CODE:
		572	eio_set_max_parallel (nthreads);
		573
		574	void
		575	max_idle (int nthreads)
		576	PROTOTYPE: $
		577	CODE:
		578	eio_set_max_idle (nthreads);
		579
		580	void
		581	max_outstanding (int maxreqs)
		582	PROTOTYPE: $
		583	CODE:
		584	max_outstanding = maxreqs;
		585
		586	void
		587	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		588	PROTOTYPE: $$$;$
		589	PPCODE:
389	{	590	{
390	int cur = started;	591	dREQ;
391	while (cur > nthreads)	592
392	{	593	req->type = EIO_OPEN;
393	end_thread ();	594	req->sv1 = newSVsv (pathname);
		595	req->ptr1 = SvPVbyte_nolen (req->sv1);
		596	req->int1 = flags;
		597	req->int2 = mode;
		598
		599	REQ_SEND;
		600	}
		601
		602	void
		603	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		604	PROTOTYPE: $;$
		605	ALIAS:
		606	aio_fsync = EIO_FSYNC
		607	aio_fdatasync = EIO_FDATASYNC
		608	PPCODE:
		609	{
		610	int fd = extract_fd (fh, 0);
		611	dREQ;
		612
		613	req->type = ix;
		614	req->sv1 = newSVsv (fh);
		615	req->int1 = fd;
		616
		617	REQ_SEND (req);
		618	}
		619
		620	void
		621	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		622	PROTOTYPE: $$$$;$
		623	PPCODE:
		624	{
		625	int fd = extract_fd (fh, 0);
		626	dREQ;
		627
		628	req->type = EIO_SYNC_FILE_RANGE;
		629	req->sv1 = newSVsv (fh);
		630	req->int1 = fd;
		631	req->offs = SvVAL64 (offset);
		632	req->size = SvVAL64 (nbytes);
		633	req->int2 = flags;
		634
		635	REQ_SEND (req);
		636	}
		637
		638	void
		639	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		640	PROTOTYPE: $;$
		641	PPCODE:
		642	{
		643	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		644	int fd = extract_fd (fh, 0);
		645	dREQ;
		646
		647	if (close_pipe < 0)
		648	{
		649	int pipefd [2];
		650
		651	if (pipe (pipefd) < 0
		652	|| close (pipefd [1]) < 0
		653	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		654	abort (); /*D*/
		655
		656	close_pipe = pipefd [0];
		657	}
		658
		659	req->type = EIO_DUP2;
		660	req->int1 = close_pipe;
		661	req->sv2 = newSVsv (fh);
		662	req->int2 = fd;
		663
		664	REQ_SEND (req);
		665	}
		666
		667	void
		668	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
		669	ALIAS:
		670	aio_read = EIO_READ
		671	aio_write = EIO_WRITE
		672	PROTOTYPE: $$$$$;$
		673	PPCODE:
		674	{
		675	STRLEN svlen;
		676	int fd = extract_fd (fh, ix == EIO_WRITE);
		677	char *svptr = SvPVbyte (data, svlen);
		678	UV len = SvUV (length);
		679
		680	if (dataoffset < 0)
		681	dataoffset += svlen;
		682
		683	if (dataoffset < 0 || dataoffset > svlen)
		684	croak ("dataoffset outside of data scalar");
		685
		686	if (ix == EIO_WRITE)
		687	{
		688	/* write: check length and adjust. */
		689	if (!SvOK (length) || len + dataoffset > svlen)
		690	len = svlen - dataoffset;
		691	}
		692	else
		693	{
		694	/* read: check type and grow scalar as necessary */
		695	SvUPGRADE (data, SVt_PV);
		696	svptr = SvGROW (data, len + dataoffset + 1);
		697	}
		698
		699	{
		700	dREQ;
		701
		702	req->type = ix;
		703	req->sv1 = newSVsv (fh);
		704	req->int1 = fd;
		705	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		706	req->size = len;
		707	req->sv2 = SvREFCNT_inc (data);
		708	req->ptr2 = (char *)svptr + dataoffset;
		709	req->stroffset = dataoffset;
		710
		711	if (!SvREADONLY (data))
394	cur--;	712	{
		713	SvREADONLY_on (data);
		714	req->flags |= FLAG_SV2_RO_OFF;
395	}	715	}
396		716
397	while (started > nthreads)	717	REQ_SEND;
		718	}
		719	}
		720
		721	void
		722	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		723	PROTOTYPE: $$;$
		724	PPCODE:
		725	{
		726	SV *data;
		727	dREQ;
		728
		729	req->type = EIO_READLINK;
		730	req->sv1 = newSVsv (path);
		731	req->ptr1 = SvPVbyte_nolen (req->sv1);
		732
		733	REQ_SEND;
		734	}
		735
		736	void
		737	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
		738	PROTOTYPE: $$$$;$
		739	PPCODE:
		740	{
		741	int ifd = extract_fd (in_fh , 0);
		742	int ofd = extract_fd (out_fh, 0);
		743	dREQ;
		744
		745	req->type = EIO_SENDFILE;
		746	req->sv1 = newSVsv (out_fh);
		747	req->int1 = ofd;
		748	req->sv2 = newSVsv (in_fh);
		749	req->int2 = ifd;
		750	req->offs = SvVAL64 (in_offset);
		751	req->size = length;
		752
		753	REQ_SEND;
		754	}
		755
		756	void
		757	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
		758	PROTOTYPE: $$$;$
		759	PPCODE:
		760	{
		761	int fd = extract_fd (fh, 0);
		762	dREQ;
		763
		764	req->type = EIO_READAHEAD;
		765	req->sv1 = newSVsv (fh);
		766	req->int1 = fd;
		767	req->offs = SvVAL64 (offset);
		768	req->size = length;
		769
		770	REQ_SEND;
		771	}
		772
		773	void
		774	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
		775	ALIAS:
		776	aio_stat = EIO_STAT
		777	aio_lstat = EIO_LSTAT
		778	PPCODE:
		779	{
		780	dREQ;
		781
		782	req->sv1 = newSVsv (fh_or_path);
		783
		784	if (SvPOK (req->sv1))
		785	{
		786	req->type = ix;
		787	req->ptr1 = SvPVbyte_nolen (req->sv1);
		788	}
		789	else
		790	{
		791	req->type = EIO_FSTAT;
		792	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		793	}
		794
		795	REQ_SEND;
		796	}
		797
		798	void
		799	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		800	PPCODE:
		801	{
		802	dREQ;
		803
		804	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		805	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		806	req->sv1 = newSVsv (fh_or_path);
		807
		808	if (SvPOK (req->sv1))
		809	{
		810	req->type = EIO_UTIME;
		811	req->ptr1 = SvPVbyte_nolen (req->sv1);
		812	}
		813	else
		814	{
		815	req->type = EIO_FUTIME;
		816	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		817	}
		818
		819	REQ_SEND;
		820	}
		821
		822	void
		823	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		824	PPCODE:
		825	{
		826	dREQ;
		827
		828	req->sv1 = newSVsv (fh_or_path);
		829	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		830
		831	if (SvPOK (req->sv1))
		832	{
		833	req->type = EIO_TRUNCATE;
		834	req->ptr1 = SvPVbyte_nolen (req->sv1);
		835	}
		836	else
		837	{
		838	req->type = EIO_FTRUNCATE;
		839	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		840	}
		841
		842	REQ_SEND;
		843	}
		844
		845	void
		846	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_chmod = EIO_CHMOD
		849	aio_mkdir = EIO_MKDIR
		850	PPCODE:
		851	{
		852	dREQ;
		853
		854	req->int2 = mode;
		855	req->sv1 = newSVsv (fh_or_path);
		856
		857	if (SvPOK (req->sv1))
		858	{
		859	req->type = ix;
		860	req->ptr1 = SvPVbyte_nolen (req->sv1);
		861	}
		862	else
		863	{
		864	req->type = EIO_FCHMOD;
		865	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		866	}
		867
		868	REQ_SEND;
		869	}
		870
		871	void
		872	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		873	PPCODE:
		874	{
		875	dREQ;
		876
		877	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		878	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		879	req->sv1 = newSVsv (fh_or_path);
		880
		881	if (SvPOK (req->sv1))
		882	{
		883	req->type = EIO_CHOWN;
		884	req->ptr1 = SvPVbyte_nolen (req->sv1);
		885	}
		886	else
		887	{
		888	req->type = EIO_FCHOWN;
		889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		890	}
		891
		892	REQ_SEND;
		893	}
		894
		895	void
		896	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
		897	ALIAS:
		898	aio_unlink = EIO_UNLINK
		899	aio_rmdir = EIO_RMDIR
		900	aio_readdir = EIO_READDIR
		901	PPCODE:
		902	{
		903	dREQ;
		904
		905	req->type = ix;
		906	req->sv1 = newSVsv (pathname);
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908
		909	REQ_SEND;
		910	}
		911
		912	void
		913	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		914	ALIAS:
		915	aio_link = EIO_LINK
		916	aio_symlink = EIO_SYMLINK
		917	aio_rename = EIO_RENAME
		918	PPCODE:
		919	{
		920	dREQ;
		921
		922	req->type = ix;
		923	req->sv1 = newSVsv (oldpath);
		924	req->ptr1 = SvPVbyte_nolen (req->sv1);
		925	req->sv2 = newSVsv (newpath);
		926	req->ptr2 = SvPVbyte_nolen (req->sv2);
		927
		928	REQ_SEND;
		929	}
		930
		931	void
		932	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		933	PPCODE:
		934	{
		935	dREQ;
		936
		937	req->type = EIO_MKNOD;
		938	req->sv1 = newSVsv (pathname);
		939	req->ptr1 = SvPVbyte_nolen (req->sv1);
		940	req->int2 = (mode_t)mode;
		941	req->offs = dev;
		942
		943	REQ_SEND;
		944	}
		945
		946	void
		947	aio_busy (double delay, SV *callback=&PL_sv_undef)
		948	PPCODE:
		949	{
		950	dREQ;
		951
		952	req->type = EIO_BUSY;
		953	req->nv1 = delay < 0. ? 0. : delay;
		954
		955	REQ_SEND;
		956	}
		957
		958	void
		959	aio_group (SV *callback=&PL_sv_undef)
		960	PROTOTYPE: ;$
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->type = EIO_GROUP;
		966
		967	req_submit (req);
		968	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		969	}
		970
		971	void
		972	aio_nop (SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_nop = EIO_NOP
		975	aio_sync = EIO_SYNC
		976	PPCODE:
		977	{
		978	dREQ;
		979
		980	req->type = ix;
		981
		982	REQ_SEND;
		983	}
		984
		985	int
		986	aioreq_pri (int pri = 0)
		987	PROTOTYPE: ;$
		988	CODE:
		989	RETVAL = next_pri;
		990	if (items > 0)
		991	{
		992	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		993	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		994	next_pri = pri;
		995	}
		996	OUTPUT:
		997	RETVAL
		998
		999	void
		1000	aioreq_nice (int nice = 0)
		1001	CODE:
		1002	nice = next_pri - nice;
		1003	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1004	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1005	next_pri = nice;
		1006
		1007	void
		1008	flush ()
		1009	PROTOTYPE:
		1010	CODE:
		1011	while (eio_nreqs ())
398	{	1012	{
399	poll_wait ();	1013	poll_wait ();
400	poll_cb (aTHX);	1014	poll_cb ();
401	}
402	}
403
404	void
405	aio_open(pathname,flags,mode,callback)
406	SV * pathname
407	int flags
408	int mode
409	SV * callback
410	PROTOTYPE: $$$$
411	CODE:
412	{
413	aio_req req;
414
415	Newz (0, req, 1, aio_cb);
416
417	if (!req)
418	croak ("out of memory during aio_req allocation");
419
420	req->type = REQ_OPEN;
421	req->data = newSVsv (pathname);
422	req->dataptr = SvPV_nolen (req->data);
423	req->fd = flags;
424	req->mode = mode;
425	req->callback = SvREFCNT_inc (callback);
426
427	send_req (req);
428	}
429
430	void
431	aio_close(fh,callback)
432	InputStream fh
433	SV * callback
434	PROTOTYPE: $$
435	ALIAS:
436	aio_close = REQ_CLOSE
437	aio_fsync = REQ_FSYNC
438	aio_fdatasync = REQ_FDATASYNC
439	CODE:
440	{
441	aio_req req;
442
443	Newz (0, req, 1, aio_cb);
444
445	if (!req)
446	croak ("out of memory during aio_req allocation");
447
448	req->type = ix;
449	req->fd = PerlIO_fileno (fh);
450	req->callback = SvREFCNT_inc (callback);
451
452	send_req (req);
453	}
454
455	void
456	aio_read(fh,offset,length,data,dataoffset,callback)
457	InputStream fh
458	UV offset
459	IV length
460	SV * data
461	IV dataoffset
462	SV * callback
463	PROTOTYPE: $$$$$$
464	CODE:
465	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
466
467	void
468	aio_write(fh,offset,length,data,dataoffset,callback)
469	OutputStream fh
470	UV offset
471	IV length
472	SV * data
473	IV dataoffset
474	SV * callback
475	PROTOTYPE: $$$$$$
476	CODE:
477	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
478
479	void
480	aio_readahead(fh,offset,length,callback)
481	InputStream fh
482	UV offset
483	IV length
484	SV * callback
485	PROTOTYPE: $$$$
486	CODE:
487	{
488	aio_req req;
489
490	if (length < 0)
491	croak ("length must not be negative");
492
493	Newz (0, req, 1, aio_cb);
494
495	if (!req)
496	croak ("out of memory during aio_req allocation");
497
498	req->type = REQ_READAHEAD;
499	req->fd = PerlIO_fileno (fh);
500	req->offset = offset;
501	req->length = length;
502	req->callback = SvREFCNT_inc (callback);
503
504	send_req (req);
505	}
506
507	void
508	aio_stat(fh_or_path,callback)
509	SV * fh_or_path
510	SV * callback
511	PROTOTYPE: $$
512	ALIAS:
513	aio_lstat = 1
514	CODE:
515	{
516	aio_req req;
517
518	Newz (0, req, 1, aio_cb);
519
520	if (!req)
521	croak ("out of memory during aio_req allocation");
522
523	New (0, req->statdata, 1, Stat_t);
524
525	if (!req->statdata)
526	croak ("out of memory during aio_req->statdata allocation");
527
528	if (SvPOK (fh_or_path))
529	{	1015	}
530	req->type = ix ? REQ_LSTAT : REQ_STAT;
531	req->data = newSVsv (fh_or_path);
532	req->dataptr = SvPV_nolen (req->data);
533	}
534	else
535	{
536	req->type = REQ_FSTAT;
537	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
538	}
539		1016
540	req->callback = SvREFCNT_inc (callback);	1017	int
541		1018	poll()
542	send_req (req);
543	}
544
545	void
546	aio_unlink(pathname,callback)
547	SV * pathname
548	SV * callback
549	PROTOTYPE: $$	1019	PROTOTYPE:
550	CODE:	1020	CODE:
551	{	1021	poll_wait ();
552	aio_req req;	1022	RETVAL = poll_cb ();
553		1023	OUTPUT:
554	Newz (0, req, 1, aio_cb);	1024	RETVAL
555
556	if (!req)
557	croak ("out of memory during aio_req allocation");
558
559	req->type = REQ_UNLINK;
560	req->data = newSVsv (pathname);
561	req->dataptr = SvPV_nolen (req->data);
562	req->callback = SvREFCNT_inc (callback);
563
564	send_req (req);
565	}
566		1025
567	int	1026	int
568	poll_fileno()	1027	poll_fileno()
569	PROTOTYPE:	1028	PROTOTYPE:
570	CODE:	1029	CODE:
…		…
574		1033
575	int	1034	int
576	poll_cb(...)	1035	poll_cb(...)
577	PROTOTYPE:	1036	PROTOTYPE:
578	CODE:	1037	CODE:
579	RETVAL = poll_cb (aTHX);	1038	RETVAL = poll_cb ();
580	OUTPUT:	1039	OUTPUT:
581	RETVAL	1040	RETVAL
582		1041
583	void	1042	void
584	poll_wait()	1043	poll_wait()
585	PROTOTYPE:	1044	PROTOTYPE:
586	CODE:	1045	CODE:
587	if (nreqs)
588	poll_wait ();	1046	poll_wait ();
589		1047
590	int	1048	int
591	nreqs()	1049	nreqs()
592	PROTOTYPE:	1050	PROTOTYPE:
593	CODE:	1051	CODE:
594	RETVAL = nreqs;	1052	RETVAL = eio_nreqs ();
595	OUTPUT:	1053	OUTPUT:
596	RETVAL	1054	RETVAL
597		1055
		1056	int
		1057	nready()
		1058	PROTOTYPE:
		1059	CODE:
		1060	RETVAL = eio_nready ();
		1061	OUTPUT:
		1062	RETVAL
		1063
		1064	int
		1065	npending()
		1066	PROTOTYPE:
		1067	CODE:
		1068	RETVAL = eio_npending ();
		1069	OUTPUT:
		1070	RETVAL
		1071
		1072	int
		1073	nthreads()
		1074	PROTOTYPE:
		1075	CODE:
		1076	RETVAL = eio_nthreads ();
		1077	OUTPUT:
		1078	RETVAL
		1079
		1080	void _on_next_submit (SV *cb)
		1081	CODE:
		1082	SvREFCNT_dec (on_next_submit);
		1083	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1084
		1085	PROTOTYPES: DISABLE
		1086
		1087	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1088
		1089	void
		1090	cancel (aio_req_ornot req)
		1091	CODE:
		1092	eio_cancel (req);
		1093
		1094	void
		1095	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1096	PPCODE:
		1097	{
		1098	if (GIMME_V != G_VOID)
		1099	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1100
		1101	if (items > 1)
		1102	{
		1103	SV *cb_cv = get_cb (callback);
		1104
		1105	SvREFCNT_dec (req->callback);
		1106	req->callback = SvREFCNT_inc (cb_cv);
		1107	}
		1108	}
		1109
		1110	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1111
		1112	void
		1113	add (aio_req grp, ...)
		1114	PPCODE:
		1115	{
		1116	int i;
		1117
		1118	if (grp->int1 == 2)
		1119	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1120
		1121	for (i = 1; i < items; ++i )
		1122	{
		1123	aio_req req;
		1124
		1125	if (GIMME_V != G_VOID)
		1126	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1127
		1128	req = SvAIO_REQ (ST (i));
		1129
		1130	if (req)
		1131	eio_grp_add (grp, req);
		1132	}
		1133	}
		1134
		1135	void
		1136	cancel_subs (aio_req_ornot req)
		1137	CODE:
		1138	req_cancel_subs (req);
		1139
		1140	void
		1141	result (aio_req grp, ...)
		1142	CODE:
		1143	{
		1144	int i;
		1145	AV *av;
		1146
		1147	grp->errorno = errno;
		1148
		1149	av = newAV ();
		1150
		1151	for (i = 1; i < items; ++i )
		1152	av_push (av, newSVsv (ST (i)));
		1153
		1154	SvREFCNT_dec (grp->sv1);
		1155	grp->sv1 = (SV *)av;
		1156	}
		1157
		1158	void
		1159	errno (aio_req grp, int errorno = errno)
		1160	CODE:
		1161	grp->errorno = errorno;
		1162
		1163	void
		1164	limit (aio_req grp, int limit)
		1165	CODE:
		1166	eio_grp_limit (grp, limit);
		1167
		1168	void
		1169	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1170	CODE:
		1171	{
		1172	SvREFCNT_dec (grp->sv2);
		1173	grp->sv2 = newSVsv (callback);
		1174	grp->feed = aio_grp_feed;
		1175
		1176	if (grp->int2 <= 0)
		1177	grp->int2 = 2;
		1178
		1179	eio_grp_limit (grp, grp->int2);
		1180	}
		1181

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