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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.136 by root, Sun Apr 19 13:15:55 2009 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
13	#include <sys/types.h>	12	#include <sys/types.h>
14	#include <sys/stat.h>	13	#include <sys/stat.h>
15	#include <limits.h>	14	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	15	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	16	#include <sched.h>
20		17
21	#if HAVE_SENDFILE	18	/* perl namespace pollution */
22	# if __linux	19	#undef VERSION
23	# include <sys/sendfile.h>	20
24	# elif __freebsd	21	#ifdef _WIN32
25	# include <sys/socket.h>	22
26	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
27	# elif __hpux	24	# undef malloc
28	# include <sys/socket.h>	25	# undef free
29	# elif __solaris /* not yet */	26
30	# include <sys/sendfile.h>	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
31	# else	59	#else
32	# error sendfile support requested but not available	60
33	# endif	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
34	#endif	68	#endif
35		69
36	#if __ia64	70	/* perl stupidly overrides readdir and maybe others */
37	# define STACKSIZE 65536	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
38	#else	81	#else
39	# define STACKSIZE 8192	82	# define SvVAL64 SvNV
40	#endif	83	#endif
41		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
42	enum {	119	enum {
43	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
44	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,
50	REQ_READDIR,
51	REQ_SYMLINK,
52	};	121	};
53		122
54	typedef struct aio_cb {	123	#include "libeio/eio.c"
55	struct aio_cb *volatile next;
56		124
57	int type;
58
59	/* should receive a cleanup, with unions */
60	int fd, fd2;
61	off_t offset;
62	size_t length;
63	ssize_t result;
64	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70
71	Stat_t *statdata;
72	} aio_cb;
73
74	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
75		127
76	static int started, wanted;	128	static SV *on_next_submit;
77	static volatile int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
78	static int max_outstanding = 1<<30;	130	static int max_outstanding;
79	static int respipe [2];
80		131
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		133
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
86	static volatile aio_req ress, rese; /* queue start, queue end */
87
88	static void free_req (aio_req req)	135	static void req_cancel (aio_req req);
89	{
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		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	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		318	*SvEND (req->sv2) = 0;
		319	PUSHs (sv_2mortal (newSViv (req->result)));
		320	break;
		321
		322	case EIO_DUP2:
		323	if (req->result > 0)
		324	req->result = 0;
		325	/* FALLTHROUGH */
		326
		327	default:
		328	PUSHs (sv_2mortal (newSViv (req->result)));
		329	break;
		330	}
		331
		332	errno = req->errorno;
		333
		334	PUTBACK;
		335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		336	SPAGAIN;
		337
		338	FREETMPS;
		339	LEAVE;
		340
		341	PUTBACK;
		342	}
		343
		344	return !!SvTRUE (ERRSV);
		345	}
		346
		347	static void req_destroy (aio_req req)
		348	{
93	if (req->fh)	349	if (req->self)
		350	{
		351	sv_unmagic (req->self, PERL_MAGIC_ext);
94	SvREFCNT_dec (req->fh);	352	SvREFCNT_dec (req->self);
		353	}
95		354
96	if (req->fh2)	355	SvREFCNT_dec (req->sv1);
97	SvREFCNT_dec (req->fh2);	356	SvREFCNT_dec (req->sv2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);	357	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107		358
108	Safefree (req);	359	Safefree (req);
109	}	360	}
110		361
		362	static void req_cancel_subs (aio_req grp)
		363	{
		364	aio_req sub;
		365
		366	if (grp->type != EIO_GROUP)
		367	return;
		368
		369	SvREFCNT_dec (grp->sv2);
		370	grp->sv2 = 0;
		371
		372	eio_grp_cancel (grp);
		373	}
		374
		375	#ifdef USE_SOCKETS_AS_HANDLES
		376	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		377	#else
		378	# define TO_SOCKET(x) (x)
		379	#endif
		380
111	static void	381	static void
112	poll_wait ()	382	create_respipe (void)
113	{	383	{
114	if (nreqs && !ress)	384	int old_readfd = respipe [0];
		385
		386	if (respipe [1] >= 0)
		387	respipe_close (TO_SOCKET (respipe [1]));
		388
		389	#ifdef _WIN32
		390	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		391	#else
		392	if (pipe (respipe))
		393	#endif
		394	croak ("unable to initialize result pipe");
		395
		396	if (old_readfd >= 0)
115	{	397	{
116	fd_set rfd;	398	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
117	FD_ZERO(&rfd);	399	croak ("unable to initialize result pipe(2)");
118	FD_SET(respipe [0], &rfd);
119		400
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	401	respipe_close (respipe [0]);
		402	respipe [0] = old_readfd;
121	}	403	}
122	}
123		404
124	static int	405	#ifdef _WIN32
125	poll_cb ()	406	int arg = 1;
126	{	407	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
127	dSP;	408	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
128	int count = 0;	409	#else
129	int do_croak = 0;	410	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
130	aio_req req;	411	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		412	#endif
		413	croak ("unable to initialize result pipe(3)");
131		414
		415	respipe_osf [0] = TO_SOCKET (respipe [0]);
		416	respipe_osf [1] = TO_SOCKET (respipe [1]);
		417	}
		418
		419	static void poll_wait (void)
		420	{
		421	fd_set rfd;
		422
		423	while (eio_nreqs ())
		424	{
		425	int size;
		426
		427	X_LOCK (reslock);
		428	size = res_queue.size;
		429	X_UNLOCK (reslock);
		430
		431	if (size)
		432	return;
		433
		434	etp_maybe_start_thread ();
		435
		436	FD_ZERO (&rfd);
		437	FD_SET (respipe [0], &rfd);
		438
		439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		440	}
		441	}
		442
		443	static int poll_cb (void)
		444	{
132	for (;;)	445	for (;;)
133	{	446	{
134	pthread_mutex_lock (&reslock);	447	int res = eio_poll ();
135	req = ress;
136		448
137	if (req)	449	if (res > 0)
138	{
139	ress = req->next;
140
141	if (!ress)
142	{
143	/* read any signals sent by the worker threads */
144	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)
146	;
147
148	rese = 0;
149	}
150	}
151
152	pthread_mutex_unlock (&reslock);
153
154	if (!req)
155	break;
156
157	nreqs--;
158
159	if (req->type == REQ_QUIT)
160	started--;
161	else
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);	450	croak (0);
235	}
236	}
237		451
238	LEAVE;	452	if (!max_outstanding || max_outstanding > eio_nreqs ())
		453	return res;
239		454
240	errno = errorno;	455	poll_wait ();
241	count++;
242	}
243
244	free_req (req);
245	}	456	}
246
247	return count;
248	}	457	}
249		458
250	static void *aio_proc(void *arg);	459	static void atfork_child (void)
251
252	static void
253	start_thread (void)
254	{	460	{
255	sigset_t fullsigset, oldsigset;	461	create_respipe ();
256	pthread_t tid;
257	pthread_attr_t attr;
258
259	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263	sigfillset (&fullsigset);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267	started++;
268
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}	462	}
271		463
272	static void	464	static SV *
273	send_req (aio_req req)	465	get_cb (SV *cb_sv)
274	{	466	{
275	while (started < wanted && nreqs >= started)	467	HV *st;
276	start_thread ();	468	GV *gvp;
		469	CV *cv;
277		470
278	nreqs++;	471	if (!SvOK (cb_sv))
		472	return 0;
279		473
280	pthread_mutex_lock (&reqlock);	474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
281		475
282	req->next = 0;	476	if (!cv)
		477	croak ("IO::AIO callback must be undef or a CODE reference");
283		478
284	if (reqe)	479	return (SV *)cv;
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}	480	}
306		481
307	static void	482	#define dREQ \
308	end_thread (void)	483	SV *cb_cv; \
309	{
310	aio_req req;	484	aio_req req; \
		485	int req_pri = next_pri; \
		486	next_pri = EIO_PRI_DEFAULT; \
		487	\
		488	cb_cv = get_cb (callback); \
		489	\
311	Newz (0, req, 1, aio_cb);	490	Newz (0, req, 1, eio_req); \
312	req->type = REQ_QUIT;	491	if (!req) \
		492	croak ("out of memory during eio_req allocation"); \
		493	\
		494	req->callback = SvREFCNT_inc (cb_cv); \
		495	req->pri = req_pri
313		496
314	send_req (req);	497	#define REQ_SEND \
315	}	498	PUTBACK; \
		499	req_submit (req); \
		500	SPAGAIN; \
		501	\
		502	if (GIMME_V != G_VOID) \
		503	XPUSHs (req_sv (req, AIO_REQ_KLASS));
316		504
317	static void min_parallel (int nthreads)
318	{
319	if (wanted < nthreads)
320	wanted = nthreads;
321	}
322
323	static void max_parallel (int nthreads)
324	{
325	int cur = started;
326
327	if (wanted > nthreads)
328	wanted = nthreads;
329
330	while (cur > wanted)
331	{
332	end_thread ();
333	cur--;
334	}
335
336	while (started > wanted)
337	{
338	poll_wait ();
339	poll_cb ();
340	}
341	}
342
343	static void create_pipe ()
344	{
345	if (pipe (respipe))
346	croak ("unable to initialize result pipe");
347
348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
349	croak ("cannot set result pipe to nonblocking mode");
350
351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
352	croak ("cannot set result pipe to nonblocking mode");
353	}
354
355	/*****************************************************************************/
356	/* work around various missing functions */
357
358	#if !HAVE_PREADWRITE
359	# define pread aio_pread
360	# define pwrite aio_pwrite
361
362	/*
363	* make our pread/pwrite safe against themselves, but not against
364	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.
366	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368
369	static ssize_t	505	static int
370	pread (int fd, void *buf, size_t count, off_t offset)	506	extract_fd (SV *fh, int wr)
371	{	507	{
372	ssize_t res;	508	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
373	off_t ooffset;
374		509
375	pthread_mutex_lock (&preadwritelock);	510	if (fd < 0)
376	ooffset = lseek (fd, 0, SEEK_CUR);	511	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
377	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);
381		512
382	return res;	513	return fd;
383	}	514	}
384		515
385	static ssize_t	516	MODULE = IO::AIO PACKAGE = IO::AIO
386	pwrite (int fd, void *buf, size_t count, off_t offset)
387	{
388	ssize_t res;
389	off_t ooffset;
390		517
391	pthread_mutex_lock (&preadwritelock);	518	PROTOTYPES: ENABLE
392	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);
397		519
398	return res;	520	BOOT:
399	}	521	{
		522	stash = gv_stashpv ("IO::AIO", 1);
		523
		524	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		525	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		526	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		527	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		528	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		529	#ifndef _WIN32
		530	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
400	#endif	531	#endif
		532	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		533	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		534	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		535	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
401		536
402	#if !HAVE_FDATASYNC
403	# define fdatasync fsync
404	#endif
405
406	#if !HAVE_READAHEAD
407	# define readahead aio_readahead
408
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)
411	{
412	char readahead_buf[4096];
413
414	while (count > 0)
415	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
417
418	pread (fd, readahead_buf, len, offset);
419	offset += len;
420	count -= len;
421	}
422
423	errno = 0;
424	}
425	#endif
426
427	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r
429
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{
435	struct dirent *e;
436	int errorno;
437
438	pthread_mutex_lock (&readdirlock);
439
440	e = readdir (dirp);
441	errorno = errno;
442
443	if (e)
444	{
445	*res = ent;
446	strcpy (ent->d_name, e->d_name);
447	}
448	else
449	*res = 0;
450
451	pthread_mutex_unlock (&readdirlock);
452
453	errno = errorno;
454	return e ? 0 : -1;
455	}
456	#endif
457
458	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461	{
462	ssize_t res;
463
464	if (!count)
465	return 0;
466
467	#if HAVE_SENDFILE
468	# if __linux
469	res = sendfile (ofd, ifd, &offset, count);
470
471	# elif __freebsd
472	/*
473	* Of course, the freebsd sendfile is a dire hack with no thoughts
474	* wasted on making it similar to other I/O functions.
475	*/
476	{
477	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479
480	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
482	res = sbytes;
483	}
484
485	# elif __hpux
486	res = sendfile (ofd, ifd, offset, count, 0, 0);
487
488	# elif __solaris
489	{
490	struct sendfilevec vec;
491	size_t sbytes;
492
493	vec.sfv_fd = ifd;
494	vec.sfv_flag = 0;
495	vec.sfv_off = offset;
496	vec.sfv_len = count;
497
498	res = sendfilev (ofd, &vec, 1, &sbytes);
499
500	if (res < 0 && sbytes)
501	res = sbytes;
502	}
503
504	# endif
505	#else
506	res = -1;
507	errno = ENOSYS;
508	#endif
509
510	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris
513	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
514	#endif
515	)
516	)
517	{
518	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];
520	res = 0;
521
522	while (count)
523	{
524	ssize_t cnt;
525
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
527
528	if (cnt <= 0)
529	{
530	if (cnt && !res) res = -1;
531	break;
532	}
533
534	cnt = write (ofd, buf, cnt);
535
536	if (cnt <= 0)
537	{
538	if (cnt && !res) res = -1;
539	break;
540	}
541
542	offset += cnt;
543	res += cnt;
544	count -= cnt;
545	}
546	}
547
548	return res;
549	}
550
551	/* read a full directory */
552	static int
553	scandir_ (const char *path, void **namesp)
554	{
555	DIR *dirp = opendir (path);
556	union
557	{
558	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;
561	struct dirent *entp;
562	char *name, *names;
563	int memlen = 4096;
564	int memofs = 0;
565	int res = 0;
566	int errorno;
567
568	if (!dirp)
569	return -1;
570
571	names = malloc (memlen);
572
573	for (;;)
574	{
575	errno = 0, readdir_r (dirp, &u.d, &entp);
576
577	if (!entp)
578	break;
579
580	name = entp->d_name;
581
582	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
583	{
584	int len = strlen (name) + 1;
585
586	res++;
587
588	while (memofs + len > memlen)
589	{
590	memlen *= 2;
591	names = realloc (names, memlen);
592	if (!names)
593	break;
594	}
595
596	memcpy (names + memofs, name, len);
597	memofs += len;
598	}
599	}
600
601	errorno = errno;
602	closedir (dirp);
603
604	if (errorno)
605	{
606	free (names);
607	errno = errorno;
608	res = -1;
609	}
610
611	*namesp = (void *)names;
612	return res;
613	}
614
615	/*****************************************************************************/
616
617	static void *
618	aio_proc (void *thr_arg)
619	{
620	aio_req req;
621	int type;
622
623	do
624	{
625	pthread_mutex_lock (&reqlock);
626
627	for (;;)
628	{
629	req = reqs;
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636
637	if (req)
638	break;
639
640	pthread_cond_wait (&reqwait, &reqlock);
641	}
642
643	pthread_mutex_unlock (&reqlock);
644
645	errno = 0; /* strictly unnecessary */
646
647	type = req->type;
648
649	switch (type)
650	{
651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
653
654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
656
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660
661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
662	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
670
671	case REQ_QUIT:
672	break;
673
674	default:
675	req->result = ENOSYS;
676	break;
677	}
678
679	req->errorno = errno;
680
681	pthread_mutex_lock (&reslock);
682
683	req->next = 0;
684
685	if (rese)
686	{
687	rese->next = req;
688	rese = req;
689	}
690	else
691	{
692	rese = ress = req;
693
694	/* write a dummy byte to the pipe so fh becomes ready */
695	write (respipe [1], &respipe, 1);
696	}
697
698	pthread_mutex_unlock (&reslock);
699	}
700	while (type != REQ_QUIT);
701
702	return 0;
703	}
704
705	/*****************************************************************************/
706
707	static void atfork_prepare (void)
708	{
709	pthread_mutex_lock (&reqlock);
710	pthread_mutex_lock (&reslock);
711	#if !HAVE_PREADWRITE
712	pthread_mutex_lock (&preadwritelock);
713	#endif
714	#if !HAVE_READDIR_R
715	pthread_mutex_lock (&readdirlock);
716	#endif
717	}
718
719	static void atfork_parent (void)
720	{
721	#if !HAVE_READDIR_R
722	pthread_mutex_unlock (&readdirlock);
723	#endif
724	#if !HAVE_PREADWRITE
725	pthread_mutex_unlock (&preadwritelock);
726	#endif
727	pthread_mutex_unlock (&reslock);
728	pthread_mutex_unlock (&reqlock);
729	}
730
731	static void atfork_child (void)
732	{
733	aio_req prv;
734
735	started = 0;
736
737	while (reqs)
738	{
739	prv = reqs;
740	reqs = prv->next;
741	free_req (prv);
742	}
743
744	reqs = reqe = 0;
745
746	while (ress)
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);
751	}
752
753	ress = rese = 0;
754
755	close (respipe [0]);
756	close (respipe [1]);
757	create_pipe ();	537	create_respipe ();
758		538
759	atfork_parent ();	539	if (eio_init (want_poll, done_poll) < 0)
760	}	540	croak ("IO::AIO: unable to initialise eio library");
761		541
762	#define dREQ \	542	/* atfork child called in fifo order, so before eio's handler */
763	aio_req req; \	543	X_THREAD_ATFORK (0, 0, atfork_child);
764	\
765	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \
767	\
768	Newz (0, req, 1, aio_cb); \
769	if (!req) \
770	croak ("out of memory during aio_req allocation"); \
771	\
772	req->callback = newSVsv (callback);
773
774	MODULE = IO::AIO PACKAGE = IO::AIO
775
776	PROTOTYPES: ENABLE
777
778	BOOT:
779	{
780	create_pipe ();
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}	544	}
783		545
784	void	546	void
785	min_parallel(nthreads)	547	max_poll_reqs (int nreqs)
786	int nthreads
787	PROTOTYPE: $	548	PROTOTYPE: $
		549	CODE:
		550	eio_set_max_poll_reqs (nreqs);
788		551
789	void	552	void
790	max_parallel(nthreads)	553	max_poll_time (double nseconds)
791	int nthreads
792	PROTOTYPE: $	554	PROTOTYPE: $
793
794	int
795	max_outstanding(nreqs)
796	int nreqs
797	PROTOTYPE: $
798	CODE:	555	CODE:
799	RETVAL = max_outstanding;	556	eio_set_max_poll_time (nseconds);
		557
		558	void
		559	min_parallel (int nthreads)
		560	PROTOTYPE: $
		561	CODE:
		562	eio_set_min_parallel (nthreads);
		563
		564	void
		565	max_parallel (int nthreads)
		566	PROTOTYPE: $
		567	CODE:
		568	eio_set_max_parallel (nthreads);
		569
		570	void
		571	max_idle (int nthreads)
		572	PROTOTYPE: $
		573	CODE:
		574	eio_set_max_idle (nthreads);
		575
		576	void
		577	max_outstanding (int maxreqs)
		578	PROTOTYPE: $
		579	CODE:
800	max_outstanding = nreqs;	580	max_outstanding = maxreqs;
801		581
802	void	582	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	583	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
804	SV * pathname
805	int flags
806	int mode
807	SV * callback
808	PROTOTYPE: $$$;$	584	PROTOTYPE: $$$;$
809	CODE:	585	PPCODE:
810	{	586	{
811	dREQ;	587	dREQ;
812		588
813	req->type = REQ_OPEN;	589	req->type = EIO_OPEN;
814	req->data = newSVsv (pathname);	590	req->sv1 = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	591	req->ptr1 = SvPVbyte_nolen (req->sv1);
816	req->fd = flags;	592	req->int1 = flags;
817	req->mode = mode;	593	req->int2 = mode;
818		594
819	send_req (req);	595	REQ_SEND;
820	}	596	}
821		597
822	void	598	void
823	aio_close(fh,callback=&PL_sv_undef)	599	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
824	SV * fh
825	SV * callback
826	PROTOTYPE: $;$	600	PROTOTYPE: $;$
827	ALIAS:	601	ALIAS:
828	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	602	aio_fsync = EIO_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	603	aio_fdatasync = EIO_FDATASYNC
831	CODE:	604	PPCODE:
832	{	605	{
		606	int fd = extract_fd (fh, 0);
833	dREQ;	607	dREQ;
834		608
835	req->type = ix;	609	req->type = ix;
836	req->fh = newSVsv (fh);	610	req->sv1 = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	611	req->int1 = fd;
838		612
839	send_req (req);	613	REQ_SEND (req);
840	}	614	}
841		615
842	void	616	void
		617	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		618	PROTOTYPE: $$$$;$
		619	PPCODE:
		620	{
		621	int fd = extract_fd (fh, 0);
		622	dREQ;
		623
		624	req->type = EIO_SYNC_FILE_RANGE;
		625	req->sv1 = newSVsv (fh);
		626	req->int1 = fd;
		627	req->offs = SvVAL64 (offset);
		628	req->size = SvVAL64 (nbytes);
		629	req->int2 = flags;
		630
		631	REQ_SEND (req);
		632	}
		633
		634	void
		635	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		636	PROTOTYPE: $;$
		637	PPCODE:
		638	{
		639	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		640	int fd = extract_fd (fh, 0);
		641	dREQ;
		642
		643	if (close_pipe < 0)
		644	{
		645	int pipefd [2];
		646
		647	if (pipe (pipefd) < 0
		648	|| close (pipefd [1]) < 0
		649	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		650	abort (); /*D*/
		651
		652	close_pipe = pipefd [0];
		653	}
		654
		655	req->type = EIO_DUP2;
		656	req->int1 = close_pipe;
		657	req->sv2 = newSVsv (fh);
		658	req->int2 = fd;
		659
		660	REQ_SEND (req);
		661	}
		662
		663	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	664	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
844	SV * fh
845	UV offset
846	UV length
847	SV * data
848	UV dataoffset
849	SV * callback
850	ALIAS:	665	ALIAS:
851	aio_read = REQ_READ	666	aio_read = EIO_READ
852	aio_write = REQ_WRITE	667	aio_write = EIO_WRITE
853	PROTOTYPE: $$$$$;$	668	PROTOTYPE: $$$$$;$
854	CODE:	669	PPCODE:
855	{	670	{
856	aio_req req;
857	STRLEN svlen;	671	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	672	char *svptr = SvPVbyte (data, svlen);
		673	UV len = SvUV (length);
		674	int fd;
		675
		676	if (SvTYPE (data) > SVt_PVMG)
		677	croak ("illegal data argument '%s', must be plain scalar string", SvPV_nolen (data));
859		678
860	SvUPGRADE (data, SVt_PV);	679	SvUPGRADE (data, SVt_PV);
861	SvPOK_on (data);	680	SvPOK_only (data);
862		681
863	if (dataoffset < 0)	682	if (dataoffset < 0)
864	dataoffset += svlen;	683	dataoffset += svlen;
865		684
866	if (dataoffset < 0 || dataoffset > svlen)	685	if (dataoffset < 0 || dataoffset > svlen)
867	croak ("data offset outside of string");	686	croak ("dataoffset outside of data scalar");
868		687
869	if (ix == REQ_WRITE)	688	if (ix == EIO_WRITE)
870	{	689	{
871	/* write: check length and adjust. */	690	/* write: check length and adjust. */
872	if (length < 0 || length + dataoffset > svlen)	691	if (!SvOK (length) || len + dataoffset > svlen)
873	length = svlen - dataoffset;	692	len = svlen - dataoffset;
874	}	693	}
875	else	694	else
876	{	695	{
877	/* read: grow scalar as necessary */	696	/* read: grow scalar as necessary */
878	svptr = SvGROW (data, length + dataoffset);	697	svptr = SvGROW (data, len + dataoffset + 1);
879	}	698	}
880		699
881	if (length < 0)	700	if (len < 0)
882	croak ("length must not be negative");	701	croak ("length must not be negative");
		702
		703	fd = extract_fd (fh, ix == EIO_WRITE);
883		704
884	{	705	{
885	dREQ;	706	dREQ;
886		707
887	req->type = ix;	708	req->type = ix;
888	req->fh = newSVsv (fh);	709	req->sv1 = newSVsv (fh);
889	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	710	req->int1 = fd;
890	: IoOFP (sv_2io (fh)));	711	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
891	req->offset = offset;	712	req->size = len;
892	req->length = length;
893	req->data = SvREFCNT_inc (data);	713	req->sv2 = SvREFCNT_inc (data);
894	req->dataptr = (char *)svptr + dataoffset;	714	req->ptr2 = (char *)svptr + dataoffset;
		715	req->stroffset = dataoffset;
895		716
896	if (!SvREADONLY (data))	717	if (!SvREADONLY (data))
897	{	718	{
898	SvREADONLY_on (data);	719	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	720	req->flags |= FLAG_SV2_RO_OFF;
900	}	721	}
901		722
902	send_req (req);	723	REQ_SEND;
903	}	724	}
904	}	725	}
905		726
906	void	727	void
		728	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		729	PROTOTYPE: $$;$
		730	PPCODE:
		731	{
		732	SV *data;
		733	dREQ;
		734
		735	req->type = EIO_READLINK;
		736	req->sv1 = newSVsv (path);
		737	req->ptr1 = SvPVbyte_nolen (req->sv1);
		738
		739	REQ_SEND;
		740	}
		741
		742	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	743	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
908	SV * out_fh
909	SV * in_fh
910	UV in_offset
911	UV length
912	SV * callback
913	PROTOTYPE: $$$$;$	744	PROTOTYPE: $$$$;$
914	CODE:	745	PPCODE:
915	{	746	{
		747	int ifd = extract_fd (in_fh , 0);
		748	int ofd = extract_fd (out_fh, 0);
916	dREQ;	749	dREQ;
917		750
918	req->type = REQ_SENDFILE;	751	req->type = EIO_SENDFILE;
919	req->fh = newSVsv (out_fh);	752	req->sv1 = newSVsv (out_fh);
920	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	753	req->int1 = ofd;
921	req->fh2 = newSVsv (in_fh);	754	req->sv2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	755	req->int2 = ifd;
923	req->offset = in_offset;	756	req->offs = SvVAL64 (in_offset);
924	req->length = length;	757	req->size = length;
925		758
926	send_req (req);	759	REQ_SEND;
927	}	760	}
928		761
929	void	762	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	763	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
931	SV * fh
932	UV offset
933	IV length
934	SV * callback
935	PROTOTYPE: $$$;$	764	PROTOTYPE: $$$;$
936	CODE:	765	PPCODE:
937	{	766	{
		767	int fd = extract_fd (fh, 0);
938	dREQ;	768	dREQ;
939		769
940	req->type = REQ_READAHEAD;	770	req->type = EIO_READAHEAD;
941	req->fh = newSVsv (fh);	771	req->sv1 = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	772	req->int1 = fd;
943	req->offset = offset;	773	req->offs = SvVAL64 (offset);
944	req->length = length;	774	req->size = length;
945		775
946	send_req (req);	776	REQ_SEND;
947	}	777	}
948		778
949	void	779	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	780	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
951	SV * fh_or_path
952	SV * callback
953	ALIAS:	781	ALIAS:
954	aio_stat = REQ_STAT	782	aio_stat = EIO_STAT
955	aio_lstat = REQ_LSTAT	783	aio_lstat = EIO_LSTAT
956	CODE:	784	PPCODE:
957	{	785	{
958	dREQ;	786	dREQ;
959		787
960	New (0, req->statdata, 1, Stat_t);	788	req->sv1 = newSVsv (fh_or_path);
961	if (!req->statdata)
962	{
963	free_req (req);
964	croak ("out of memory during aio_req->statdata allocation");
965	}
966		789
967	if (SvPOK (fh_or_path))	790	if (SvPOK (req->sv1))
968	{	791	{
969	req->type = ix;	792	req->type = ix;
970	req->data = newSVsv (fh_or_path);
971	req->dataptr = SvPVbyte_nolen (req->data);	793	req->ptr1 = SvPVbyte_nolen (req->sv1);
972	}	794	}
973	else	795	else
974	{	796	{
975	req->type = REQ_FSTAT;	797	req->type = EIO_FSTAT;
976	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		799	}
		800
		801	REQ_SEND;
		802	}
		803
		804	void
		805	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		806	PPCODE:
		807	{
		808	dREQ;
		809
		810	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		811	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		812	req->sv1 = newSVsv (fh_or_path);
		813
		814	if (SvPOK (req->sv1))
978	}	815	{
		816	req->type = EIO_UTIME;
		817	req->ptr1 = SvPVbyte_nolen (req->sv1);
		818	}
		819	else
		820	{
		821	req->type = EIO_FUTIME;
		822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		823	}
979		824
980	send_req (req);	825	REQ_SEND;
981	}	826	}
982		827
983	void	828	void
		829	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		836
		837	if (SvPOK (req->sv1))
		838	{
		839	req->type = EIO_TRUNCATE;
		840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841	}
		842	else
		843	{
		844	req->type = EIO_FTRUNCATE;
		845	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		846	}
		847
		848	REQ_SEND;
		849	}
		850
		851	void
		852	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		853	ALIAS:
		854	aio_chmod = EIO_CHMOD
		855	aio_mkdir = EIO_MKDIR
		856	PPCODE:
		857	{
		858	dREQ;
		859
		860	req->int2 = mode;
		861	req->sv1 = newSVsv (fh_or_path);
		862
		863	if (SvPOK (req->sv1))
		864	{
		865	req->type = ix;
		866	req->ptr1 = SvPVbyte_nolen (req->sv1);
		867	}
		868	else
		869	{
		870	req->type = EIO_FCHMOD;
		871	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		872	}
		873
		874	REQ_SEND;
		875	}
		876
		877	void
		878	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		879	PPCODE:
		880	{
		881	dREQ;
		882
		883	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		884	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		885	req->sv1 = newSVsv (fh_or_path);
		886
		887	if (SvPOK (req->sv1))
		888	{
		889	req->type = EIO_CHOWN;
		890	req->ptr1 = SvPVbyte_nolen (req->sv1);
		891	}
		892	else
		893	{
		894	req->type = EIO_FCHOWN;
		895	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		896	}
		897
		898	REQ_SEND;
		899	}
		900
		901	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	902	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
985	SV * pathname
986	SV * callback
987	ALIAS:	903	ALIAS:
988	aio_unlink = REQ_UNLINK	904	aio_unlink = EIO_UNLINK
989	aio_rmdir = REQ_RMDIR	905	aio_rmdir = EIO_RMDIR
		906	aio_readdir = EIO_READDIR
990	CODE:	907	PPCODE:
991	{	908	{
992	dREQ;	909	dREQ;
993		910
994	req->type = ix;	911	req->type = ix;
995	req->data = newSVsv (pathname);	912	req->sv1 = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	913	req->ptr1 = SvPVbyte_nolen (req->sv1);
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		920	ALIAS:
		921	aio_link = EIO_LINK
		922	aio_symlink = EIO_SYMLINK
		923	aio_rename = EIO_RENAME
		924	PPCODE:
		925	{
		926	dREQ;
997		927
998	send_req (req);	928	req->type = ix;
999	}	929	req->sv1 = newSVsv (oldpath);
1000		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
1001	void	931	req->sv2 = newSVsv (newpath);
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	932	req->ptr2 = SvPVbyte_nolen (req->sv2);
1003	SV * oldpath
1004	SV * newpath
1005	SV * callback
1006	CODE:
1007	{
1008	dREQ;
1009		933
1010	req->type = REQ_SYMLINK;	934	REQ_SEND;
1011	req->fh = newSVsv (oldpath);	935	}
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	936
1013	req->data = newSVsv (newpath);	937	void
1014	req->dataptr = SvPVbyte_nolen (req->data);	938	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
1015		942
1016	send_req (req);	943	req->type = EIO_MKNOD;
1017	}	944	req->sv1 = newSVsv (pathname);
1018		945	req->ptr1 = SvPVbyte_nolen (req->sv1);
1019	void	946	req->int2 = (mode_t)mode;
1020	aio_readdir(pathname,callback=&PL_sv_undef)	947	req->offs = dev;
1021	SV * pathname
1022	SV * callback
1023	CODE:
1024	{
1025	dREQ;
1026		948
		949	REQ_SEND;
		950	}
		951
		952	void
		953	aio_busy (double delay, SV *callback=&PL_sv_undef)
		954	PPCODE:
		955	{
		956	dREQ;
		957
		958	req->type = EIO_BUSY;
		959	req->nv1 = delay < 0. ? 0. : delay;
		960
		961	REQ_SEND;
		962	}
		963
		964	void
		965	aio_group (SV *callback=&PL_sv_undef)
		966	PROTOTYPE: ;$
		967	PPCODE:
		968	{
		969	dREQ;
		970
		971	req->type = EIO_GROUP;
		972
		973	req_submit (req);
		974	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		975	}
		976
		977	void
		978	aio_nop (SV *callback=&PL_sv_undef)
		979	ALIAS:
		980	aio_nop = EIO_NOP
		981	aio_sync = EIO_SYNC
		982	PPCODE:
		983	{
		984	dREQ;
		985
1027	req->type = REQ_READDIR;	986	req->type = ix;
1028	req->data = newSVsv (pathname);
1029	req->dataptr = SvPVbyte_nolen (req->data);
1030
1031	send_req (req);
1032	}
1033		987
		988	REQ_SEND;
		989	}
		990
		991	int
		992	aioreq_pri (int pri = 0)
		993	PROTOTYPE: ;$
		994	CODE:
		995	RETVAL = next_pri;
		996	if (items > 0)
		997	{
		998	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		999	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1000	next_pri = pri;
		1001	}
		1002	OUTPUT:
		1003	RETVAL
		1004
1034	void	1005	void
		1006	aioreq_nice (int nice = 0)
		1007	CODE:
		1008	nice = next_pri - nice;
		1009	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1010	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1011	next_pri = nice;
		1012
		1013	void
1035	flush()	1014	flush ()
1036	PROTOTYPE:	1015	PROTOTYPE:
1037	CODE:	1016	CODE:
1038	while (nreqs)	1017	while (eio_nreqs ())
1039	{	1018	{
1040	poll_wait ();	1019	poll_wait ();
1041	poll_cb ();	1020	poll_cb ();
1042	}	1021	}
1043		1022
1044	void	1023	int
1045	poll()	1024	poll()
1046	PROTOTYPE:	1025	PROTOTYPE:
1047	CODE:	1026	CODE:
1048	if (nreqs)
1049	{
1050	poll_wait ();	1027	poll_wait ();
1051	poll_cb ();	1028	RETVAL = poll_cb ();
1052	}	1029	OUTPUT:
		1030	RETVAL
1053		1031
1054	int	1032	int
1055	poll_fileno()	1033	poll_fileno()
1056	PROTOTYPE:	1034	PROTOTYPE:
1057	CODE:	1035	CODE:
…		…
1069		1047
1070	void	1048	void
1071	poll_wait()	1049	poll_wait()
1072	PROTOTYPE:	1050	PROTOTYPE:
1073	CODE:	1051	CODE:
1074	if (nreqs)
1075	poll_wait ();	1052	poll_wait ();
1076		1053
1077	int	1054	int
1078	nreqs()	1055	nreqs()
1079	PROTOTYPE:	1056	PROTOTYPE:
1080	CODE:	1057	CODE:
1081	RETVAL = nreqs;	1058	RETVAL = eio_nreqs ();
1082	OUTPUT:	1059	OUTPUT:
1083	RETVAL	1060	RETVAL
1084		1061
		1062	int
		1063	nready()
		1064	PROTOTYPE:
		1065	CODE:
		1066	RETVAL = eio_nready ();
		1067	OUTPUT:
		1068	RETVAL
		1069
		1070	int
		1071	npending()
		1072	PROTOTYPE:
		1073	CODE:
		1074	RETVAL = eio_npending ();
		1075	OUTPUT:
		1076	RETVAL
		1077
		1078	int
		1079	nthreads()
		1080	PROTOTYPE:
		1081	CODE:
		1082	RETVAL = eio_nthreads ();
		1083	OUTPUT:
		1084	RETVAL
		1085
		1086	void _on_next_submit (SV *cb)
		1087	CODE:
		1088	SvREFCNT_dec (on_next_submit);
		1089	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1090
		1091	PROTOTYPES: DISABLE
		1092
		1093	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1094
		1095	void
		1096	cancel (aio_req_ornot req)
		1097	CODE:
		1098	eio_cancel (req);
		1099
		1100	void
		1101	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1102	PPCODE:
		1103	{
		1104	if (GIMME_V != G_VOID)
		1105	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1106
		1107	if (items > 1)
		1108	{
		1109	SV *cb_cv = get_cb (callback);
		1110
		1111	SvREFCNT_dec (req->callback);
		1112	req->callback = SvREFCNT_inc (cb_cv);
		1113	}
		1114	}
		1115
		1116	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1117
		1118	void
		1119	add (aio_req grp, ...)
		1120	PPCODE:
		1121	{
		1122	int i;
		1123
		1124	if (grp->int1 == 2)
		1125	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1126
		1127	for (i = 1; i < items; ++i )
		1128	{
		1129	aio_req req;
		1130
		1131	if (GIMME_V != G_VOID)
		1132	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1133
		1134	req = SvAIO_REQ (ST (i));
		1135
		1136	if (req)
		1137	eio_grp_add (grp, req);
		1138	}
		1139	}
		1140
		1141	void
		1142	cancel_subs (aio_req_ornot req)
		1143	CODE:
		1144	req_cancel_subs (req);
		1145
		1146	void
		1147	result (aio_req grp, ...)
		1148	CODE:
		1149	{
		1150	int i;
		1151	AV *av;
		1152
		1153	grp->errorno = errno;
		1154
		1155	av = newAV ();
		1156
		1157	for (i = 1; i < items; ++i )
		1158	av_push (av, newSVsv (ST (i)));
		1159
		1160	SvREFCNT_dec (grp->sv1);
		1161	grp->sv1 = (SV *)av;
		1162	}
		1163
		1164	void
		1165	errno (aio_req grp, int errorno = errno)
		1166	CODE:
		1167	grp->errorno = errorno;
		1168
		1169	void
		1170	limit (aio_req grp, int limit)
		1171	CODE:
		1172	eio_grp_limit (grp, limit);
		1173
		1174	void
		1175	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1176	CODE:
		1177	{
		1178	SvREFCNT_dec (grp->sv2);
		1179	grp->sv2 = newSVsv (callback);
		1180	grp->feed = aio_grp_feed;
		1181
		1182	if (grp->int2 <= 0)
		1183	grp->int2 = 2;
		1184
		1185	eio_grp_limit (grp, grp->int2);
		1186	}
		1187

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