ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs.
Revision 1.139 by root, Tue Apr 21 20:12:56 2009 UTC

		1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
		9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
5	#include <sys/types.h>	12	#include <sys/types.h>
6	#include <sys/stat.h>	13	#include <sys/stat.h>
7	#include <unistd.h>	14	#include <limits.h>
8	#include <fcntl.h>	15	#include <fcntl.h>
9	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11	#include <endian.h>
12		17
13	#include <pthread.h>	18	/* perl namespace pollution */
14	#include <sys/syscall.h>	19	#undef VERSION
15		20
16	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	21	#ifdef _WIN32
17	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
18	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
19		22
20	#if __ia64	23	# define EIO_STRUCT_DIRENT Direntry_t
21	# define STACKSIZE 65536	24	# undef malloc
		25	# undef free
		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
22	#else	59	#else
23	# define STACKSIZE 4096	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
24	#endif	68	#endif
25		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
26	enum {	119	enum {
27	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
28	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
31	REQ_FSYNC, REQ_FDATASYNC,
32	};	121	};
33		122
34	typedef struct aio_cb {	123	#include "libeio/eio.c"
35	struct aio_cb *volatile next;
36		124
37	int type;
38
39	int fd;
40	off_t offset;
41	size_t length;
42	ssize_t result;
43	mode_t mode; /* open */
44	int errorno;
45	SV *data, *callback;
46	void *dataptr;
47	STRLEN dataoffset;
48
49	Stat_t *statdata;
50	} aio_cb;
51
52	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
53		127
54	static int started;	128	static SV *on_next_submit;
55	static int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
56	static int max_outstanding = 1<<30;	130	static int max_outstanding;
57	static int respipe [2];
58		131
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		133
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
64	static volatile aio_req ress, rese; /* queue start, queue end */	135	static void req_cancel (aio_req req);
		136
		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
65		384
66	static void	385	static void
67	poll_wait ()	386	create_respipe (void)
68	{	387	{
69	if (!nreqs)	388	int old_readfd = respipe [0];
70	return;
71		389
		390	if (respipe [1] >= 0)
		391	respipe_close (TO_SOCKET (respipe [1]));
		392
		393	#ifdef _WIN32
		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");
		399
		400	if (old_readfd >= 0)
		401	{
		402	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		403	croak ("unable to initialize result pipe(2)");
		404
		405	respipe_close (respipe [0]);
		406	respipe [0] = old_readfd;
		407	}
		408
		409	#ifdef _WIN32
		410	int arg = 1;
		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)");
		418
		419	respipe_osf [0] = TO_SOCKET (respipe [0]);
		420	respipe_osf [1] = TO_SOCKET (respipe [1]);
		421	}
		422
		423	static void poll_wait (void)
		424	{
72	fd_set rfd;	425	fd_set rfd;
		426
		427	while (eio_nreqs ())
		428	{
		429	int size;
		430
		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
73	FD_ZERO(&rfd);	440	FD_ZERO (&rfd);
74	FD_SET(respipe [0], &rfd);	441	FD_SET (respipe [0], &rfd);
75		442
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	443	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
77	}
78
79	static int
80	poll_cb ()
81	{
82	dSP;
83	int count = 0;
84	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}	444	}
		445	}
92		446
		447	static int poll_cb (void)
		448	{
93	for (;;)	449	for (;;)
94	{	450	{
95	pthread_mutex_lock (&reslock);	451	int res = eio_poll ();
96		452
97	req = ress;
98
99	if (ress)	453	if (res > 0)
100	{
101	ress = ress->next;
102	if (!ress) rese = 0;
103	}
104
105	pthread_mutex_unlock (&reslock);
106
107	if (!req)
108	break;	454	croak (0);
109		455
110	nreqs--;	456	if (!max_outstanding || max_outstanding > eio_nreqs ())
		457	return res;
111		458
112	if (req->type == REQ_QUIT)	459	poll_wait ();
113	started--;
114	else
115	{
116	int errorno = errno;
117	errno = req->errorno;
118
119	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset
121	+ req->result > 0 ? req->result : 0);
122
123	if (req->data)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}
134
135	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));
137
138	if (req->type == REQ_OPEN)
139	{
140	/* convert fd to fh */
141	SV *fh;
142
143	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145	SPAGAIN;
146
147	fh = POPs;
148
149	PUSHMARK (SP);
150	XPUSHs (fh);
151	}
152
153	if (SvOK (req->callback))
154	{
155	PUTBACK;
156	call_sv (req->callback, G_VOID | G_EVAL);
157	SPAGAIN;
158	}
159
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162
163	errno = errorno;
164	count++;
165	}
166
167	Safefree (req);
168	}	460	}
169
170	return count;
171	}	461	}
172		462
173	static void *aio_proc(void *arg);	463	static void atfork_child (void)
174
175	static void
176	start_thread (void)
177	{	464	{
178	sigset_t fullsigset, oldsigset;	465	create_respipe ();
179	pthread_t tid;
180	pthread_attr_t attr;
181
182	pthread_attr_init (&attr);
183	pthread_attr_setstacksize (&attr, STACKSIZE);
184	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186	sigfillset (&fullsigset);
187	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190	started++;
191
192	sigprocmask (SIG_SETMASK, &oldsigset, 0);
193	}	466	}
194		467
195	static void	468	static SV *
196	send_req (aio_req req)	469	get_cb (SV *cb_sv)
197	{	470	{
198	nreqs++;	471	HV *st;
		472	GV *gvp;
		473	CV *cv;
199		474
200	pthread_mutex_lock (&reqlock);	475	if (!SvOK (cb_sv))
		476	return 0;
201		477
202	req->next = 0;	478	cv = sv_2cv (cb_sv, &st, &gvp, 0);
203		479
204	if (reqe)	480	if (!cv)
205	{	481	croak ("IO::AIO callback must be undef or a CODE reference");
206	reqe->next = req;
207	reqe = req;
208	}
209	else
210	reqe = reqs = req;
211		482
212	pthread_cond_signal (&reqwait);	483	return (SV *)cv;
213	pthread_mutex_unlock (&reqlock);
214
215	while (nreqs > max_outstanding)
216	{
217	poll_wait ();
218	poll_cb ();
219	}
220	}	484	}
221		485
222	static void	486	#define dREQ \
223	end_thread (void)	487	SV *cb_cv; \
224	{
225	aio_req req;	488	aio_req req; \
226	New (0, req, 1, aio_cb);	489	int req_pri = next_pri; \
227	req->type = REQ_QUIT;	490	next_pri = EIO_PRI_DEFAULT; \
228		491	\
229	send_req (req);	492	cb_cv = get_cb (callback); \
230	}	493	\
231
232	static void
233	read_write (int dowrite, int fd, off_t offset, size_t length,
234	SV *data, STRLEN dataoffset, SV *callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 || dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{
251	/* write: check length and adjust. */
252	if (length < 0 || length + dataoffset > svlen)
253	length = svlen - dataoffset;
254	}
255	else
256	{
257	/* read: grow scalar as necessary */
258	svptr = SvGROW (data, length + dataoffset);
259	}
260
261	if (length < 0)
262	croak ("length must not be negative");
263
264	Newz (0, req, 1, aio_cb);	494	Newz (0, req, 1, eio_req); \
265		495	if (!req) \
266	if (!req)
267	croak ("out of memory during aio_req allocation");	496	croak ("out of memory during eio_req allocation"); \
268		497	\
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);	498	req->callback = SvREFCNT_inc (cb_cv); \
		499	req->pri = req_pri
276		500
277	send_req (req);	501	#define REQ_SEND \
278	}	502	PUTBACK; \
		503	req_submit (req); \
		504	SPAGAIN; \
		505	\
		506	if (GIMME_V != G_VOID) \
		507	XPUSHs (req_sv (req, AIO_REQ_KLASS));
279		508
280	static void *	509	static int
281	aio_proc (void *thr_arg)	510	extract_fd (SV *fh, int wr)
282	{	511	{
283	aio_req req;	512	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
284	int type;
285		513
286	do	514	if (fd < 0)
287	{	515	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
288	pthread_mutex_lock (&reqlock);
289		516
290	for (;;)	517	return fd;
291	{	518	}
292	req = reqs;
293		519
294	if (reqs)	520	MODULE = IO::AIO PACKAGE = IO::AIO
295	{
296	reqs = reqs->next;
297	if (!reqs) reqe = 0;
298	}
299		521
300	if (req)	522	PROTOTYPES: ENABLE
301	break;
302		523
303	pthread_cond_wait (&reqwait, &reqlock);	524	BOOT:
304	}	525	{
		526	stash = gv_stashpv ("IO::AIO", 1);
305		527
306	pthread_mutex_unlock (&reqlock);	528	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
307		529	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
308	errno = 0; /* strictly unnecessary */	530	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
309		531	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
310	type = req->type;	532	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
311		533	#ifndef _WIN32
312	switch (type)	534	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
313	{
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;
315	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;
316	#if SYS_readahead
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
318	#else
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
320	#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));
321		540
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	541	create_respipe ();
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
325		542
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	543	if (eio_init (want_poll, done_poll) < 0)
327	case REQ_CLOSE: req->result = close (req->fd); break;	544	croak ("IO::AIO: unable to initialise eio library");
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
329		545
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	546	/* atfork child called in fifo order, so before eio's handler */
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	547	X_THREAD_ATFORK (0, 0, atfork_child);
332
333	case REQ_QUIT:
334	break;
335
336	default:
337	req->result = ENOSYS;
338	break;
339	}
340
341	req->errorno = errno;
342
343	pthread_mutex_lock (&reslock);
344
345	req->next = 0;
346
347	if (rese)
348	{
349	rese->next = req;
350	rese = req;
351	}
352	else
353	{
354	rese = ress = req;
355
356	/* write a dummy byte to the pipe so fh becomes ready */
357	write (respipe [1], &respipe, 1);
358	}
359
360	pthread_mutex_unlock (&reslock);
361	}
362	while (type != REQ_QUIT);
363
364	return 0;
365	}	548	}
366		549
367	MODULE = IO::AIO PACKAGE = IO::AIO
368
369	PROTOTYPES: ENABLE
370
371	BOOT:
372	{
373	if (pipe (respipe))
374	croak ("unable to initialize result pipe");
375
376	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
377	croak ("cannot set result pipe to nonblocking mode");
378
379	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
380	croak ("cannot set result pipe to nonblocking mode");
381	}
382
383	void	550	void
384	min_parallel(nthreads)	551	max_poll_reqs (int nreqs)
385	int nthreads
386	PROTOTYPE: $	552	PROTOTYPE: $
387	CODE:	553	CODE:
388	while (nthreads > started)	554	eio_set_max_poll_reqs (nreqs);
389	start_thread ();
390		555
391	void	556	void
392	max_parallel(nthreads)	557	max_poll_time (double nseconds)
393	int nthreads
394	PROTOTYPE: $	558	PROTOTYPE: $
395	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: $$$;$
		589	PPCODE:
396	{	590	{
397	int cur = started;	591	dREQ;
398	while (cur > nthreads)	592
399	{	593	req->type = EIO_OPEN;
400	end_thread ();	594	req->sv1 = newSVsv (pathname);
		595	req->ptr1 = SvPVbyte_nolen (req->sv1);
		596	req->int1 = flags;
		597	req->int2 = mode;
		598
		599	REQ_SEND;
		600	}
		601
		602	void
		603	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		604	PROTOTYPE: $;$
		605	ALIAS:
		606	aio_fsync = EIO_FSYNC
		607	aio_fdatasync = EIO_FDATASYNC
		608	PPCODE:
		609	{
		610	int fd = extract_fd (fh, 0);
		611	dREQ;
		612
		613	req->type = ix;
		614	req->sv1 = newSVsv (fh);
		615	req->int1 = fd;
		616
		617	REQ_SEND (req);
		618	}
		619
		620	void
		621	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		622	PROTOTYPE: $$$$;$
		623	PPCODE:
		624	{
		625	int fd = extract_fd (fh, 0);
		626	dREQ;
		627
		628	req->type = EIO_SYNC_FILE_RANGE;
		629	req->sv1 = newSVsv (fh);
		630	req->int1 = fd;
		631	req->offs = SvVAL64 (offset);
		632	req->size = SvVAL64 (nbytes);
		633	req->int2 = flags;
		634
		635	REQ_SEND (req);
		636	}
		637
		638	void
		639	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		640	PROTOTYPE: $;$
		641	PPCODE:
		642	{
		643	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		644	int fd = extract_fd (fh, 0);
		645	dREQ;
		646
		647	if (close_pipe < 0)
		648	{
		649	int pipefd [2];
		650
		651	if (pipe (pipefd) < 0
		652	|| close (pipefd [1]) < 0
		653	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		654	abort (); /*D*/
		655
		656	close_pipe = pipefd [0];
		657	}
		658
		659	req->type = EIO_DUP2;
		660	req->int1 = close_pipe;
		661	req->sv2 = newSVsv (fh);
		662	req->int2 = fd;
		663
		664	REQ_SEND (req);
		665	}
		666
		667	void
		668	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
		669	ALIAS:
		670	aio_read = EIO_READ
		671	aio_write = EIO_WRITE
		672	PROTOTYPE: $$$$$;$
		673	PPCODE:
		674	{
		675	STRLEN svlen;
		676	int fd = extract_fd (fh, ix == EIO_WRITE);
		677	char *svptr = SvPVbyte (data, svlen);
		678	UV len = SvUV (length);
		679
		680	if (dataoffset < 0)
		681	dataoffset += svlen;
		682
		683	if (dataoffset < 0 || dataoffset > svlen)
		684	croak ("dataoffset outside of data scalar");
		685
		686	if (ix == EIO_WRITE)
		687	{
		688	/* write: check length and adjust. */
		689	if (!SvOK (length) || len + dataoffset > svlen)
		690	len = svlen - dataoffset;
		691	}
		692	else
		693	{
		694	/* read: check type and grow scalar as necessary */
		695	SvUPGRADE (data, SVt_PV);
		696	svptr = SvGROW (data, len + dataoffset + 1);
		697	}
		698
		699	{
		700	dREQ;
		701
		702	req->type = ix;
		703	req->sv1 = newSVsv (fh);
		704	req->int1 = fd;
		705	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		706	req->size = len;
		707	req->sv2 = SvREFCNT_inc (data);
		708	req->ptr2 = (char *)svptr + dataoffset;
		709	req->stroffset = dataoffset;
		710
		711	if (!SvREADONLY (data))
401	cur--;	712	{
		713	SvREADONLY_on (data);
		714	req->flags |= FLAG_SV2_RO_OFF;
402	}	715	}
403		716
404	while (started > nthreads)	717	REQ_SEND;
		718	}
		719	}
		720
		721	void
		722	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		723	PROTOTYPE: $$;$
		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 ())
405	{	1012	{
406	poll_wait ();	1013	poll_wait ();
407	poll_cb ();	1014	poll_cb ();
408	}	1015	}
409	}
410		1016
411	int	1017	int
412	max_outstanding(nreqs)
413	int nreqs
414	PROTOTYPE: $
415	CODE:
416	RETVAL = max_outstanding;
417	max_outstanding = nreqs;
418
419	void
420	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421	SV * pathname
422	int flags
423	int mode
424	SV * callback
425	PROTOTYPE: $$$;$
426	CODE:
427	{
428	aio_req req;
429
430	Newz (0, req, 1, aio_cb);
431
432	if (!req)
433	croak ("out of memory during aio_req allocation");
434
435	req->type = REQ_OPEN;
436	req->data = newSVsv (pathname);
437	req->dataptr = SvPV_nolen (req->data);
438	req->fd = flags;
439	req->mode = mode;
440	req->callback = SvREFCNT_inc (callback);
441
442	send_req (req);
443	}
444
445	void
446	aio_close(fh,callback=&PL_sv_undef)
447	InputStream fh
448	SV * callback
449	PROTOTYPE: $;$
450	ALIAS:
451	aio_close = REQ_CLOSE
452	aio_fsync = REQ_FSYNC
453	aio_fdatasync = REQ_FDATASYNC
454	CODE:
455	{
456	aio_req req;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462
463	req->type = ix;
464	req->fd = PerlIO_fileno (fh);
465	req->callback = SvREFCNT_inc (callback);
466
467	send_req (req);
468	}
469
470	void
471	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472	InputStream fh
473	UV offset
474	IV length
475	SV * data
476	IV dataoffset
477	SV * callback
478	PROTOTYPE: $$$$$;$
479	CODE:
480	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482	void
483	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484	OutputStream fh
485	UV offset
486	IV length
487	SV * data
488	IV dataoffset
489	SV * callback
490	PROTOTYPE: $$$$$;$
491	CODE:
492	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494	void
495	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496	InputStream fh
497	UV offset
498	IV length
499	SV * callback
500	PROTOTYPE: $$$;$
501	CODE:
502	{
503	aio_req req;
504
505	if (length < 0)
506	croak ("length must not be negative");
507
508	Newz (0, req, 1, aio_cb);
509
510	if (!req)
511	croak ("out of memory during aio_req allocation");
512
513	req->type = REQ_READAHEAD;
514	req->fd = PerlIO_fileno (fh);
515	req->offset = offset;
516	req->length = length;
517	req->callback = SvREFCNT_inc (callback);
518
519	send_req (req);
520	}
521
522	void
523	aio_stat(fh_or_path,callback=&PL_sv_undef)
524	SV * fh_or_path
525	SV * callback
526	ALIAS:
527	aio_stat = REQ_STAT
528	aio_lstat = REQ_LSTAT
529	CODE:
530	{
531	aio_req req;
532
533	Newz (0, req, 1, aio_cb);
534
535	if (!req)
536	croak ("out of memory during aio_req allocation");
537
538	New (0, req->statdata, 1, Stat_t);
539
540	if (!req->statdata)
541	croak ("out of memory during aio_req->statdata allocation");
542
543	if (SvPOK (fh_or_path))
544	{
545	req->type = ix;
546	req->data = newSVsv (fh_or_path);
547	req->dataptr = SvPV_nolen (req->data);
548	}
549	else
550	{
551	req->type = REQ_FSTAT;
552	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553	}
554
555	req->callback = SvREFCNT_inc (callback);
556
557	send_req (req);
558	}
559
560	void
561	aio_unlink(pathname,callback=&PL_sv_undef)
562	SV * pathname
563	SV * callback
564	CODE:
565	{
566	aio_req req;
567
568	Newz (0, req, 1, aio_cb);
569
570	if (!req)
571	croak ("out of memory during aio_req allocation");
572
573	req->type = REQ_UNLINK;
574	req->data = newSVsv (pathname);
575	req->dataptr = SvPV_nolen (req->data);
576	req->callback = SvREFCNT_inc (callback);
577
578	send_req (req);
579	}
580
581	void
582	flush()
583	PROTOTYPE:
584	CODE:
585	while (nreqs)
586	{
587	poll_wait ();
588	poll_cb ();
589	}
590
591	void
592	poll()	1018	poll()
593	PROTOTYPE:	1019	PROTOTYPE:
594	CODE:	1020	CODE:
595	if (nreqs)
596	{
597	poll_wait ();	1021	poll_wait ();
598	poll_cb ();	1022	RETVAL = poll_cb ();
599	}	1023	OUTPUT:
		1024	RETVAL
600		1025
601	int	1026	int
602	poll_fileno()	1027	poll_fileno()
603	PROTOTYPE:	1028	PROTOTYPE:
604	CODE:	1029	CODE:
…		…
616		1041
617	void	1042	void
618	poll_wait()	1043	poll_wait()
619	PROTOTYPE:	1044	PROTOTYPE:
620	CODE:	1045	CODE:
621	if (nreqs)
622	poll_wait ();	1046	poll_wait ();
623		1047
624	int	1048	int
625	nreqs()	1049	nreqs()
626	PROTOTYPE:	1050	PROTOTYPE:
627	CODE:	1051	CODE:
628	RETVAL = nreqs;	1052	RETVAL = eio_nreqs ();
629	OUTPUT:	1053	OUTPUT:
630	RETVAL	1054	RETVAL
631		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

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines