ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.15 by root, Sat Jul 23 18:19:56 2005 UTC vs.
Revision 1.121 by root, Tue May 13 18:50:27 2008 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
8	#include <unistd.h>	14	#include <limits.h>
9	#include <fcntl.h>	15	#include <fcntl.h>
10	#include <signal.h>
11	#include <sched.h>	16	#include <sched.h>
12	#if __linux	17
		18	/* perl namespace pollution */
		19	#undef VERSION
		20
		21	#ifdef _WIN32
		22
		23	# define EIO_STRUCT_DIRENT Direntry_t
		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
		59	#else
		60
		61	# include <sys/time.h>
13	#include <sys/syscall.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
14	#endif	68	#endif
15		69
16	#include <pthread.h>	70	#define EIO_STRUCT_STAT Stat_t
17		71
18	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	72	/* use NV for 32 bit perls as it allows larger offsets */
19	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */	73	#if IVSIZE >= 8
20	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */	74	# define SvVAL64 SvIV
21
22	#if __ia64
23	# define STACKSIZE 65536
24	#else	75	#else
25	# define STACKSIZE 4096	76	# define SvVAL64 SvNV
26	#endif	77	#endif
27		78
		79	static HV *stash;
		80	typedef SV SV8; /* byte-sv, used for argument-checking */
		81
		82	#define AIO_REQ_KLASS "IO::AIO::REQ"
		83	#define AIO_GRP_KLASS "IO::AIO::GRP"
		84
		85	#define EIO_REQ_MEMBERS \
		86	SV *callback; \
		87	SV *sv1, *sv2; \
		88	STRLEN stroffset; \
		89	SV *self;
		90
		91	#include "libeio/eio.h"
		92
		93	static int req_invoke (eio_req *req);
		94	#define EIO_FINISH(req) req_invoke (req)
		95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
		99
28	enum {	100	enum {
29	REQ_QUIT,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
30	REQ_OPEN, REQ_CLOSE,
31	REQ_READ, REQ_WRITE, REQ_READAHEAD,
32	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
33	REQ_FSYNC, REQ_FDATASYNC,
34	};	102	};
35		103
36	typedef struct aio_cb {	104	#include "libeio/eio.c"
37	struct aio_cb *volatile next;
38		105
39	int type;
40
41	int fd;
42	off_t offset;
43	size_t length;
44	ssize_t result;
45	mode_t mode; /* open */
46	int errorno;
47	SV *data, *callback, *fh;
48	void *dataptr;
49	STRLEN dataoffset;
50
51	Stat_t *statdata;
52	} aio_cb;
53
54	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
		107	typedef eio_req *aio_req_ornot;
55		108
56	static int started;	109	static SV *on_next_submit;
57	static volatile int nreqs;	110	static int next_pri = EIO_PRI_DEFAULT;
58	static int max_outstanding = 1<<30;	111	static int max_outstanding;
59	static int respipe [2];
60		112
61	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
62	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
63	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
64		114
65	static volatile aio_req reqs, reqe; /* queue start, queue end */	115	static void req_destroy (aio_req req);
66	static volatile aio_req ress, rese; /* queue start, queue end */	116	static void req_cancel (aio_req req);
67		117
68	static void	118	static void want_poll (void)
69	poll_wait ()
70	{	119	{
71	if (nreqs && !ress)	120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
		131
		132	/* must be called at most once */
		133	static SV *req_sv (aio_req req, const char *klass)
		134	{
		135	if (!req->self)
72	{	136	{
73	fd_set rfd;	137	req->self = (SV *)newHV ();
74	FD_ZERO(&rfd);	138	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
75	FD_SET(respipe [0], &rfd);
76
77	select (respipe [0] + 1, &rfd, 0, 0, 0);
78	}	139	}
79	}
80		140
81	static int	141	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
82	poll_cb ()	142	}
		143
		144	static aio_req SvAIO_REQ (SV *sv)
		145	{
		146	MAGIC *mg;
		147
		148	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		149	croak ("object of class " AIO_REQ_KLASS " expected");
		150
		151	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		152
		153	return mg ? (aio_req)mg->mg_ptr : 0;
		154	}
		155
		156	static void aio_grp_feed (aio_req grp)
		157	{
		158	if (grp->sv2 && SvOK (grp->sv2))
		159	{
		160	dSP;
		161
		162	ENTER;
		163	SAVETMPS;
		164	PUSHMARK (SP);
		165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		166	PUTBACK;
		167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		168	SPAGAIN;
		169	FREETMPS;
		170	LEAVE;
		171	}
		172	}
		173
		174	static void req_submit (eio_req *req)
		175	{
		176	eio_submit (req);
		177
		178	if (on_next_submit)
		179	{
		180	dSP;
		181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
		188	}
		189	}
		190
		191	static int req_invoke (eio_req *req)
83	{	192	{
84	dSP;	193	dSP;
85	int count = 0;
86	aio_req req, prv;
87		194
88	pthread_mutex_lock (&reslock);	195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
89		197
90	{	198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
91	/* read any signals sent by the worker threads */
92	char buf [32];
93	while (read (respipe [0], buf, 32) > 0)
94	;
95	}
96
97	req = ress;
98	ress = rese = 0;
99
100	pthread_mutex_unlock (&reslock);
101
102	while (req)
103	{	199	{
104	nreqs--;	200	ENTER;
		201	SAVETMPS;
		202	PUSHMARK (SP);
		203	EXTEND (SP, 1);
105		204
106	if (req->type == REQ_QUIT)	205	switch (req->type)
107	started--;
108	else
109	{	206	{
110	int errorno = errno;	207	case EIO_READDIR:
111	errno = req->errorno;
112
113	if (req->type == REQ_READ)
114	SvCUR_set (req->data, req->dataoffset
115	+ req->result > 0 ? req->result : 0);
116
117	if (req->data)
118	SvREFCNT_dec (req->data);
119
120	if (req->fh)
121	SvREFCNT_dec (req->fh);
122
123	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
124	{	208	{
125	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	209	SV *rv = &PL_sv_undef;
126	PL_laststatval = req->result;
127	PL_statcache = *(req->statdata);
128		210
129	Safefree (req->statdata);	211	if (req->result >= 0)
		212	{
		213	int i;
		214	char *buf = req->ptr2;
		215	AV *av = newAV ();
		216
		217	av_extend (av, req->result - 1);
		218
		219	for (i = 0; i < req->result; ++i)
		220	{
		221	SV *sv = newSVpv (buf, 0);
		222
		223	av_store (av, i, sv);
		224	buf += SvCUR (sv) + 1;
		225	}
		226
		227	rv = sv_2mortal (newRV_noinc ((SV *)av));
		228	}
		229
		230	PUSHs (rv);
130	}	231	}
		232	break;
131		233
132	ENTER;	234	case EIO_OPEN:
133	PUSHMARK (SP);
134	XPUSHs (sv_2mortal (newSViv (req->result)));
135
136	if (req->type == REQ_OPEN)
137	{	235	{
138	/* convert fd to fh */	236	/* convert fd to fh */
139	SV *fh;	237	SV *fh = &PL_sv_undef;
140		238
141	PUTBACK;	239	if (req->result >= 0)
142	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	240	{
143	SPAGAIN;	241	GV *gv = (GV *)sv_newmortal ();
		242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
144		248
145	fh = SvREFCNT_inc (POPs);	249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
146		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
147	PUSHMARK (SP);	261	PUSHs (fh);
148	XPUSHs (sv_2mortal (fh));
149	}	262	}
150
151	if (SvOK (req->callback))
152	{
153	PUTBACK;
154	call_sv (req->callback, G_VOID | G_EVAL);
155	SPAGAIN;
156	}
157
158	LEAVE;
159
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162
163	errno = errorno;
164	count++;
165	}
166
167	prv = req;
168	req = req->next;
169	Safefree (prv);
170
171	/* TODO: croak on errors? */
172	}
173
174	return count;
175	}
176
177	static void *aio_proc(void *arg);
178
179	static void
180	start_thread (void)
181	{
182	sigset_t fullsigset, oldsigset;
183	pthread_t tid;
184	pthread_attr_t attr;
185
186	pthread_attr_init (&attr);
187	pthread_attr_setstacksize (&attr, STACKSIZE);
188	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
189
190	sigfillset (&fullsigset);
191	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
192
193	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
194	started++;
195
196	sigprocmask (SIG_SETMASK, &oldsigset, 0);
197	}
198
199	static void
200	send_req (aio_req req)
201	{
202	nreqs++;
203
204	pthread_mutex_lock (&reqlock);
205
206	req->next = 0;
207
208	if (reqe)
209	{
210	reqe->next = req;
211	reqe = req;
212	}
213	else
214	reqe = reqs = req;
215
216	pthread_cond_signal (&reqwait);
217	pthread_mutex_unlock (&reqlock);
218
219	while (nreqs > max_outstanding)
220	{
221	poll_wait ();
222	poll_cb ();
223	}
224	}
225
226	static void
227	end_thread (void)
228	{
229	aio_req req;
230	New (0, req, 1, aio_cb);
231	req->type = REQ_QUIT;
232
233	send_req (req);
234	}
235
236	static void *
237	aio_proc (void *thr_arg)
238	{
239	aio_req req;
240	int type;
241
242	do
243	{
244	pthread_mutex_lock (&reqlock);
245
246	for (;;)
247	{
248	req = reqs;
249
250	if (reqs)
251	{
252	reqs = reqs->next;
253	if (!reqs) reqe = 0;
254	}
255
256	if (req)
257	break;	263	break;
258		264
259	pthread_cond_wait (&reqwait, &reqlock);	265	case EIO_GROUP:
260	}	266	req->int1 = 2; /* mark group as finished */
261		267
262	pthread_mutex_unlock (&reqlock);	268	if (req->sv1)
263
264	errno = 0; /* strictly unnecessary */
265
266	type = req->type;
267
268	switch (type)
269	{	269	{
270	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	270	int i;
271	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	271	AV *av = (AV *)req->sv1;
272	#if SYS_readahead
273	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
274	#else
275	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
276	#endif
277		272
278	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	273	EXTEND (SP, AvFILL (av) + 1);
279	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	274	for (i = 0; i <= AvFILL (av); ++i)
280	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	275	PUSHs (*av_fetch (av, i, 0));
281		276	}
282	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
283	case REQ_CLOSE: req->result = close (req->fd); break;
284	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
285
286	case REQ_FSYNC: req->result = fsync (req->fd); break;
287	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
288
289	case REQ_QUIT:
290	break;	277	break;
291		278
		279	case EIO_NOP:
		280	case EIO_BUSY:
		281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		286	break;
		287
		288	case EIO_STAT:
		289	case EIO_LSTAT:
		290	case EIO_FSTAT:
		291	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		292	PL_laststatval = req->result;
		293	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		294	PUSHs (sv_2mortal (newSViv (req->result)));
		295	break;
		296
		297	case EIO_READ:
		298	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		299	*SvEND (req->sv2) = 0;
		300	PUSHs (sv_2mortal (newSViv (req->result)));
		301	break;
		302
		303	case EIO_DUP2:
		304	if (req->result > 0)
		305	req->result = 0;
		306	/* FALLTHROUGH */
		307
292	default:	308	default:
293	req->result = ENOSYS;	309	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;	310	break;
295	}	311	}
296		312
297	req->errorno = errno;	313	errno = req->errorno;
298		314
299	pthread_mutex_lock (&reslock);	315	PUTBACK;
		316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		317	SPAGAIN;
300		318
301	req->next = 0;	319	FREETMPS;
		320	LEAVE;
302		321
303	if (rese)	322	PUTBACK;
304	{
305	rese->next = req;
306	rese = req;
307	}
308	else
309	{
310	rese = ress = req;
311
312	/* write a dummy byte to the pipe so fh becomes ready */
313	write (respipe [1], &respipe, 1);
314	}
315
316	pthread_mutex_unlock (&reslock);
317	}	323	}
318	while (type != REQ_QUIT);
319		324
		325	return !!SvTRUE (ERRSV);
		326	}
		327
		328	static void req_destroy (aio_req req)
		329	{
		330	if (req->self)
		331	{
		332	sv_unmagic (req->self, PERL_MAGIC_ext);
		333	SvREFCNT_dec (req->self);
		334	}
		335
		336	SvREFCNT_dec (req->sv1);
		337	SvREFCNT_dec (req->sv2);
		338	SvREFCNT_dec (req->callback);
		339
		340	Safefree (req);
		341	}
		342
		343	static void req_cancel_subs (aio_req grp)
		344	{
		345	aio_req sub;
		346
		347	if (grp->type != EIO_GROUP)
		348	return;
		349
		350	SvREFCNT_dec (grp->sv2);
		351	grp->sv2 = 0;
		352
		353	eio_grp_cancel (grp);
		354	}
		355
		356	#ifdef USE_SOCKETS_AS_HANDLES
		357	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		358	#else
		359	# define TO_SOCKET(x) (x)
		360	#endif
		361
		362	static void
		363	create_respipe (void)
		364	{
		365	int old_readfd = respipe [0];
		366
		367	if (respipe [1] >= 0)
		368	respipe_close (TO_SOCKET (respipe [1]));
		369
		370	#ifdef _WIN32
		371	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		372	#else
		373	if (pipe (respipe))
		374	#endif
		375	croak ("unable to initialize result pipe");
		376
		377	if (old_readfd >= 0)
		378	{
		379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		380	croak ("unable to initialize result pipe(2)");
		381
		382	respipe_close (respipe [0]);
		383	respipe [0] = old_readfd;
		384	}
		385
		386	#ifdef _WIN32
		387	int arg = 1;
		388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		390	#else
		391	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		392	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		393	#endif
		394	croak ("unable to initialize result pipe(3)");
		395
		396	respipe_osf [0] = TO_SOCKET (respipe [0]);
		397	respipe_osf [1] = TO_SOCKET (respipe [1]);
		398	}
		399
		400	static void poll_wait (void)
		401	{
		402	fd_set rfd;
		403
		404	while (eio_nreqs ())
		405	{
		406	int size;
		407
		408	X_LOCK (reslock);
		409	size = res_queue.size;
		410	X_UNLOCK (reslock);
		411
		412	if (size)
		413	return;
		414
		415	maybe_start_thread ();
		416
		417	FD_ZERO (&rfd);
		418	FD_SET (respipe [0], &rfd);
		419
		420	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		421	}
		422	}
		423
		424	static int poll_cb (void)
		425	{
		426	int res;
		427
		428	do
		429	{
		430	res = eio_poll ();
		431
		432	if (res > 0)
		433	croak (0);
		434	}
		435	while (max_outstanding && max_outstanding <= eio_nreqs ());
		436
320	return 0;	437	return res;
321	}	438	}
322		439
		440	static void atfork_child (void)
		441	{
		442	create_respipe ();
		443	}
		444
		445	#define dREQ \
		446	aio_req req; \
		447	int req_pri = next_pri; \
		448	next_pri = EIO_PRI_DEFAULT; \
		449	\
		450	if (SvOK (callback) && !SvROK (callback)) \
		451	croak ("callback must be undef or of reference type"); \
		452	\
		453	Newz (0, req, 1, eio_req); \
		454	if (!req) \
		455	croak ("out of memory during eio_req allocation"); \
		456	\
		457	req->callback = newSVsv (callback); \
		458	req->pri = req_pri
		459
		460	#define REQ_SEND \
		461	req_submit (req); \
		462	\
		463	if (GIMME_V != G_VOID) \
		464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
		465
323	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
324		467
325	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
326		469
327	BOOT:	470	BOOT:
328	{	471	{
329	if (pipe (respipe))	472	stash = gv_stashpv ("IO::AIO", 1);
330	croak ("unable to initialize result pipe");
331		473
332	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
333	croak ("cannot set result pipe to nonblocking mode");	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		479	#ifdef _WIN32
		480	X_MUTEX_CHECK (wrklock);
		481	X_MUTEX_CHECK (reslock);
		482	X_MUTEX_CHECK (reqlock);
		483	X_MUTEX_CHECK (reqwait);
		484	X_MUTEX_CHECK (preadwritelock);
		485	X_MUTEX_CHECK (readdirlock);
334		486
335	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	487	X_COND_CHECK (reqwait);
336	croak ("cannot set result pipe to nonblocking mode");	488	#else
337	}	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		490	#endif
338		491
		492	create_respipe ();
		493
		494	if (eio_init (want_poll, done_poll) < 0)
		495	croak ("IO::AIO: unable to initialise eio library");
		496
		497	/* atfork child called in fifo order, so before eio's handler */
		498	X_THREAD_ATFORK (0, 0, atfork_child);
		499	}
		500
339	void	501	void
340	min_parallel(nthreads)	502	max_poll_reqs (int nreqs)
341	int nthreads
342	PROTOTYPE: $	503	PROTOTYPE: $
343	CODE:	504	CODE:
344	while (nthreads > started)	505	eio_set_max_poll_reqs (nreqs);
345	start_thread ();
346		506
347	void	507	void
348	max_parallel(nthreads)	508	max_poll_time (double nseconds)
349	int nthreads
350	PROTOTYPE: $	509	PROTOTYPE: $
351	CODE:	510	CODE:
		511	eio_set_max_poll_time (nseconds);
		512
		513	void
		514	min_parallel (int nthreads)
		515	PROTOTYPE: $
		516	CODE:
		517	eio_set_min_parallel (nthreads);
		518
		519	void
		520	max_parallel (int nthreads)
		521	PROTOTYPE: $
		522	CODE:
		523	eio_set_max_parallel (nthreads);
		524
		525	void
		526	max_idle (int nthreads)
		527	PROTOTYPE: $
		528	CODE:
		529	eio_set_max_idle (nthreads);
		530
		531	void
		532	max_outstanding (int maxreqs)
		533	PROTOTYPE: $
		534	CODE:
		535	max_outstanding = maxreqs;
		536
		537	void
		538	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		539	PROTOTYPE: $$$;$
		540	PPCODE:
352	{	541	{
353	int cur = started;	542	dREQ;
354	while (cur > nthreads)	543
355	{	544	req->type = EIO_OPEN;
356	end_thread ();	545	req->sv1 = newSVsv (pathname);
		546	req->ptr1 = SvPVbyte_nolen (req->sv1);
		547	req->int1 = flags;
		548	req->int2 = mode;
		549
		550	REQ_SEND;
		551	}
		552
		553	void
		554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		555	PROTOTYPE: $;$
		556	ALIAS:
		557	aio_fsync = EIO_FSYNC
		558	aio_fdatasync = EIO_FDATASYNC
		559	PPCODE:
		560	{
		561	dREQ;
		562
		563	req->type = ix;
		564	req->sv1 = newSVsv (fh);
		565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		566
		567	REQ_SEND (req);
		568	}
		569
		570	void
		571	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		572	PROTOTYPE: $;$
		573	PPCODE:
		574	{
		575	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		576	dREQ;
		577
		578	if (close_pipe < 0)
		579	{
		580	int pipefd [2];
		581
		582	if (pipe (pipefd) < 0
		583	|| close (pipefd [1]) < 0
		584	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		585	abort (); /*D*/
		586
		587	close_pipe = pipefd [0];
		588	}
		589
		590	req->type = EIO_DUP2;
		591	req->int1 = close_pipe;
		592	req->sv2 = newSVsv (fh);
		593	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		594
		595	REQ_SEND (req);
		596	}
		597
		598	void
		599	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
		600	ALIAS:
		601	aio_read = EIO_READ
		602	aio_write = EIO_WRITE
		603	PROTOTYPE: $$$$$;$
		604	PPCODE:
		605	{
		606	STRLEN svlen;
		607	char *svptr = SvPVbyte (data, svlen);
		608	UV len = SvUV (length);
		609
		610	SvUPGRADE (data, SVt_PV);
		611	SvPOK_on (data);
		612
		613	if (dataoffset < 0)
		614	dataoffset += svlen;
		615
		616	if (dataoffset < 0 || dataoffset > svlen)
		617	croak ("dataoffset outside of data scalar");
		618
		619	if (ix == EIO_WRITE)
		620	{
		621	/* write: check length and adjust. */
		622	if (!SvOK (length) || len + dataoffset > svlen)
		623	len = svlen - dataoffset;
		624	}
		625	else
		626	{
		627	/* read: grow scalar as necessary */
		628	svptr = SvGROW (data, len + dataoffset + 1);
		629	}
		630
		631	if (len < 0)
		632	croak ("length must not be negative");
		633
		634	{
		635	dREQ;
		636
		637	req->type = ix;
		638	req->sv1 = newSVsv (fh);
		639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
		640	: IoOFP (sv_2io (fh)));
		641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		642	req->size = len;
		643	req->sv2 = SvREFCNT_inc (data);
		644	req->ptr2 = (char *)svptr + dataoffset;
		645	req->stroffset = dataoffset;
		646
		647	if (!SvREADONLY (data))
357	cur--;	648	{
		649	SvREADONLY_on (data);
		650	req->flags |= FLAG_SV2_RO_OFF;
358	}	651	}
359		652
360	while (started > nthreads)	653	REQ_SEND;
		654	}
		655	}
		656
		657	void
		658	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		659	PROTOTYPE: $$;$
		660	PPCODE:
		661	{
		662	SV *data;
		663	dREQ;
		664
		665	req->type = EIO_READLINK;
		666	req->sv1 = newSVsv (path);
		667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		668
		669	REQ_SEND;
		670	}
		671
		672	void
		673	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
		674	PROTOTYPE: $$$$;$
		675	PPCODE:
		676	{
		677	dREQ;
		678
		679	req->type = EIO_SENDFILE;
		680	req->sv1 = newSVsv (out_fh);
		681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
		682	req->sv2 = newSVsv (in_fh);
		683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
		684	req->offs = SvVAL64 (in_offset);
		685	req->size = length;
		686
		687	REQ_SEND;
		688	}
		689
		690	void
		691	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
		692	PROTOTYPE: $$$;$
		693	PPCODE:
		694	{
		695	dREQ;
		696
		697	req->type = EIO_READAHEAD;
		698	req->sv1 = newSVsv (fh);
		699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		700	req->offs = SvVAL64 (offset);
		701	req->size = length;
		702
		703	REQ_SEND;
		704	}
		705
		706	void
		707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
		708	ALIAS:
		709	aio_stat = EIO_STAT
		710	aio_lstat = EIO_LSTAT
		711	PPCODE:
		712	{
		713	dREQ;
		714
		715	req->sv1 = newSVsv (fh_or_path);
		716
		717	if (SvPOK (req->sv1))
		718	{
		719	req->type = ix;
		720	req->ptr1 = SvPVbyte_nolen (req->sv1);
		721	}
		722	else
		723	{
		724	req->type = EIO_FSTAT;
		725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		726	}
		727
		728	REQ_SEND;
		729	}
		730
		731	void
		732	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		733	PPCODE:
		734	{
		735	dREQ;
		736
		737	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		738	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		739	req->sv1 = newSVsv (fh_or_path);
		740
		741	if (SvPOK (req->sv1))
		742	{
		743	req->type = EIO_UTIME;
		744	req->ptr1 = SvPVbyte_nolen (req->sv1);
		745	}
		746	else
		747	{
		748	req->type = EIO_FUTIME;
		749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		750	}
		751
		752	REQ_SEND;
		753	}
		754
		755	void
		756	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		757	PPCODE:
		758	{
		759	dREQ;
		760
		761	req->sv1 = newSVsv (fh_or_path);
		762	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		763
		764	if (SvPOK (req->sv1))
		765	{
		766	req->type = EIO_TRUNCATE;
		767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		768	}
		769	else
		770	{
		771	req->type = EIO_FTRUNCATE;
		772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		773	}
		774
		775	REQ_SEND;
		776	}
		777
		778	void
		779	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		780	ALIAS:
		781	aio_chmod = EIO_CHMOD
		782	aio_mkdir = EIO_MKDIR
		783	PPCODE:
		784	{
		785	dREQ;
		786
		787	req->int2 = mode;
		788	req->sv1 = newSVsv (fh_or_path);
		789
		790	if (SvPOK (req->sv1))
		791	{
		792	req->type = ix;
		793	req->ptr1 = SvPVbyte_nolen (req->sv1);
		794	}
		795	else
		796	{
		797	req->type = EIO_FCHMOD;
		798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		799	}
		800
		801	REQ_SEND;
		802	}
		803
		804	void
		805	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		806	PPCODE:
		807	{
		808	dREQ;
		809
		810	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		811	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		812	req->sv1 = newSVsv (fh_or_path);
		813
		814	if (SvPOK (req->sv1))
		815	{
		816	req->type = EIO_CHOWN;
		817	req->ptr1 = SvPVbyte_nolen (req->sv1);
		818	}
		819	else
		820	{
		821	req->type = EIO_FCHOWN;
		822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		823	}
		824
		825	REQ_SEND;
		826	}
		827
		828	void
		829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
		830	ALIAS:
		831	aio_unlink = EIO_UNLINK
		832	aio_rmdir = EIO_RMDIR
		833	aio_readdir = EIO_READDIR
		834	PPCODE:
		835	{
		836	dREQ;
		837
		838	req->type = ix;
		839	req->sv1 = newSVsv (pathname);
		840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841
		842	REQ_SEND;
		843	}
		844
		845	void
		846	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_link = EIO_LINK
		849	aio_symlink = EIO_SYMLINK
		850	aio_rename = EIO_RENAME
		851	PPCODE:
		852	{
		853	dREQ;
		854
		855	req->type = ix;
		856	req->sv1 = newSVsv (oldpath);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858	req->sv2 = newSVsv (newpath);
		859	req->ptr2 = SvPVbyte_nolen (req->sv2);
		860
		861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
		870	req->type = EIO_MKNOD;
		871	req->sv1 = newSVsv (pathname);
		872	req->ptr1 = SvPVbyte_nolen (req->sv1);
		873	req->int2 = (mode_t)mode;
		874	req->offs = dev;
		875
		876	REQ_SEND;
		877	}
		878
		879	void
		880	aio_busy (double delay, SV *callback=&PL_sv_undef)
		881	PPCODE:
		882	{
		883	dREQ;
		884
		885	req->type = EIO_BUSY;
		886	req->nv1 = delay < 0. ? 0. : delay;
		887
		888	REQ_SEND;
		889	}
		890
		891	void
		892	aio_group (SV *callback=&PL_sv_undef)
		893	PROTOTYPE: ;$
		894	PPCODE:
		895	{
		896	dREQ;
		897
		898	req->type = EIO_GROUP;
		899
		900	eio_submit (req);
		901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		902	}
		903
		904	void
		905	aio_nop (SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_nop = EIO_NOP
		908	aio_sync = EIO_SYNC
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->type = ix;
		914
		915	REQ_SEND;
		916	}
		917
		918	int
		919	aioreq_pri (int pri = 0)
		920	PROTOTYPE: ;$
		921	CODE:
		922	RETVAL = next_pri;
		923	if (items > 0)
		924	{
		925	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		926	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		927	next_pri = pri;
		928	}
		929	OUTPUT:
		930	RETVAL
		931
		932	void
		933	aioreq_nice (int nice = 0)
		934	CODE:
		935	nice = next_pri - nice;
		936	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		937	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		938	next_pri = nice;
		939
		940	void
		941	flush ()
		942	PROTOTYPE:
		943	CODE:
		944	while (eio_nreqs ())
361	{	945	{
362	poll_wait ();	946	poll_wait ();
363	poll_cb ();	947	poll_cb ();
364	}	948	}
365	}
366		949
367	int	950	int
368	max_outstanding(nreqs)
369	int nreqs
370	PROTOTYPE: $
371	CODE:
372	RETVAL = max_outstanding;
373	max_outstanding = nreqs;
374
375	void
376	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
377	SV * pathname
378	int flags
379	int mode
380	SV * callback
381	PROTOTYPE: $$$;$
382	CODE:
383	{
384	aio_req req;
385
386	Newz (0, req, 1, aio_cb);
387
388	if (!req)
389	croak ("out of memory during aio_req allocation");
390
391	req->type = REQ_OPEN;
392	req->data = newSVsv (pathname);
393	req->dataptr = SvPV_nolen (req->data);
394	req->fd = flags;
395	req->mode = mode;
396	req->callback = SvREFCNT_inc (callback);
397
398	send_req (req);
399	}
400
401	void
402	aio_close(fh,callback=&PL_sv_undef)
403	SV * fh
404	SV * callback
405	PROTOTYPE: $;$
406	ALIAS:
407	aio_close = REQ_CLOSE
408	aio_fsync = REQ_FSYNC
409	aio_fdatasync = REQ_FDATASYNC
410	CODE:
411	{
412	aio_req req;
413
414	Newz (0, req, 1, aio_cb);
415
416	if (!req)
417	croak ("out of memory during aio_req allocation");
418
419	req->type = ix;
420	req->fh = newSVsv (fh);
421	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
422	req->callback = SvREFCNT_inc (callback);
423
424	send_req (req);
425	}
426
427	void
428	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
429	SV * fh
430	UV offset
431	IV length
432	SV * data
433	IV dataoffset
434	SV * callback
435	ALIAS:
436	aio_read = REQ_READ
437	aio_write = REQ_WRITE
438	PROTOTYPE: $$$$$;$
439	CODE:
440	{
441	aio_req req;
442	STRLEN svlen;
443	char *svptr = SvPV (data, svlen);
444
445	SvUPGRADE (data, SVt_PV);
446	SvPOK_on (data);
447
448	if (dataoffset < 0)
449	dataoffset += svlen;
450
451	if (dataoffset < 0 || dataoffset > svlen)
452	croak ("data offset outside of string");
453
454	if (ix == REQ_WRITE)
455	{
456	/* write: check length and adjust. */
457	if (length < 0 || length + dataoffset > svlen)
458	length = svlen - dataoffset;
459	}
460	else
461	{
462	/* read: grow scalar as necessary */
463	svptr = SvGROW (data, length + dataoffset);
464	}
465
466	if (length < 0)
467	croak ("length must not be negative");
468
469	Newz (0, req, 1, aio_cb);
470
471	if (!req)
472	croak ("out of memory during aio_req allocation");
473
474	req->type = ix;
475	req->fh = newSVsv (fh);
476	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
477	: IoOFP (sv_2io (fh)));
478	req->offset = offset;
479	req->length = length;
480	req->data = SvREFCNT_inc (data);
481	req->dataptr = (char *)svptr + dataoffset;
482	req->callback = SvREFCNT_inc (callback);
483
484	send_req (req);
485	}
486
487	void
488	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
489	SV * fh
490	UV offset
491	IV length
492	SV * callback
493	PROTOTYPE: $$$;$
494	CODE:
495	{
496	aio_req req;
497
498	if (length < 0)
499	croak ("length must not be negative");
500
501	Newz (0, req, 1, aio_cb);
502
503	if (!req)
504	croak ("out of memory during aio_req allocation");
505
506	req->type = REQ_READAHEAD;
507	req->fh = newSVsv (fh);
508	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
509	req->offset = offset;
510	req->length = length;
511	req->callback = SvREFCNT_inc (callback);
512
513	send_req (req);
514	}
515
516	void
517	aio_stat(fh_or_path,callback=&PL_sv_undef)
518	SV * fh_or_path
519	SV * callback
520	ALIAS:
521	aio_stat = REQ_STAT
522	aio_lstat = REQ_LSTAT
523	CODE:
524	{
525	aio_req req;
526
527	Newz (0, req, 1, aio_cb);
528
529	if (!req)
530	croak ("out of memory during aio_req allocation");
531
532	New (0, req->statdata, 1, Stat_t);
533
534	if (!req->statdata)
535	croak ("out of memory during aio_req->statdata allocation");
536
537	if (SvPOK (fh_or_path))
538	{
539	req->type = ix;
540	req->data = newSVsv (fh_or_path);
541	req->dataptr = SvPV_nolen (req->data);
542	}
543	else
544	{
545	req->type = REQ_FSTAT;
546	req->fh = newSVsv (fh_or_path);
547	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
548	}
549
550	req->callback = SvREFCNT_inc (callback);
551
552	send_req (req);
553	}
554
555	void
556	aio_unlink(pathname,callback=&PL_sv_undef)
557	SV * pathname
558	SV * callback
559	CODE:
560	{
561	aio_req req;
562
563	Newz (0, req, 1, aio_cb);
564
565	if (!req)
566	croak ("out of memory during aio_req allocation");
567
568	req->type = REQ_UNLINK;
569	req->data = newSVsv (pathname);
570	req->dataptr = SvPV_nolen (req->data);
571	req->callback = SvREFCNT_inc (callback);
572
573	send_req (req);
574	}
575
576	void
577	flush()
578	PROTOTYPE:
579	CODE:
580	while (nreqs)
581	{
582	poll_wait ();
583	poll_cb ();
584	}
585
586	void
587	poll()	951	poll()
588	PROTOTYPE:	952	PROTOTYPE:
589	CODE:	953	CODE:
590	if (nreqs)
591	{
592	poll_wait ();	954	poll_wait ();
593	poll_cb ();	955	RETVAL = poll_cb ();
594	}	956	OUTPUT:
		957	RETVAL
595		958
596	int	959	int
597	poll_fileno()	960	poll_fileno()
598	PROTOTYPE:	961	PROTOTYPE:
599	CODE:	962	CODE:
…		…
611		974
612	void	975	void
613	poll_wait()	976	poll_wait()
614	PROTOTYPE:	977	PROTOTYPE:
615	CODE:	978	CODE:
616	if (nreqs)
617	poll_wait ();	979	poll_wait ();
618		980
619	int	981	int
620	nreqs()	982	nreqs()
621	PROTOTYPE:	983	PROTOTYPE:
622	CODE:	984	CODE:
623	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
624	OUTPUT:	986	OUTPUT:
625	RETVAL	987	RETVAL
626		988
		989	int
		990	nready()
		991	PROTOTYPE:
		992	CODE:
		993	RETVAL = eio_nready ();
		994	OUTPUT:
		995	RETVAL
		996
		997	int
		998	npending()
		999	PROTOTYPE:
		1000	CODE:
		1001	RETVAL = eio_npending ();
		1002	OUTPUT:
		1003	RETVAL
		1004
		1005	int
		1006	nthreads()
		1007	PROTOTYPE:
		1008	CODE:
		1009	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1010	RETVAL = started;
		1011	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1012	OUTPUT:
		1013	RETVAL
		1014
		1015	void _on_next_submit (SV *cb)
		1016	CODE:
		1017	SvREFCNT_dec (on_next_submit);
		1018	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1019
		1020	PROTOTYPES: DISABLE
		1021
		1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1023
		1024	void
		1025	cancel (aio_req_ornot req)
		1026	CODE:
		1027	eio_cancel (req);
		1028
		1029	void
		1030	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1031	CODE:
		1032	SvREFCNT_dec (req->callback);
		1033	req->callback = newSVsv (callback);
		1034
		1035	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1036
		1037	void
		1038	add (aio_req grp, ...)
		1039	PPCODE:
		1040	{
		1041	int i;
		1042
		1043	if (grp->int1 == 2)
		1044	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1045
		1046	for (i = 1; i < items; ++i )
		1047	{
		1048	aio_req req;
		1049
		1050	if (GIMME_V != G_VOID)
		1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1052
		1053	req = SvAIO_REQ (ST (i));
		1054
		1055	if (req)
		1056	eio_grp_add (grp, req);
		1057	}
		1058	}
		1059
		1060	void
		1061	cancel_subs (aio_req_ornot req)
		1062	CODE:
		1063	req_cancel_subs (req);
		1064
		1065	void
		1066	result (aio_req grp, ...)
		1067	CODE:
		1068	{
		1069	int i;
		1070	AV *av;
		1071
		1072	grp->errorno = errno;
		1073
		1074	av = newAV ();
		1075
		1076	for (i = 1; i < items; ++i )
		1077	av_push (av, newSVsv (ST (i)));
		1078
		1079	SvREFCNT_dec (grp->sv1);
		1080	grp->sv1 = (SV *)av;
		1081	}
		1082
		1083	void
		1084	errno (aio_req grp, int errorno = errno)
		1085	CODE:
		1086	grp->errorno = errorno;
		1087
		1088	void
		1089	limit (aio_req grp, int limit)
		1090	CODE:
		1091	eio_grp_limit (grp, limit);
		1092
		1093	void
		1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1095	CODE:
		1096	{
		1097	SvREFCNT_dec (grp->sv2);
		1098	grp->sv2 = newSVsv (callback);
		1099
		1100	if (grp->int2 <= 0)
		1101	grp->int2 = 2;
		1102
		1103	eio_grp_limit (grp, grp->int2);
		1104	}
		1105

Diff Legend

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