ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.138 by root, Tue Apr 21 20:06:05 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>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/types.h>	12	#include <sys/types.h>
15	#include <sys/stat.h>	13	#include <sys/stat.h>
16	#include <limits.h>	14	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	15	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	16	#include <sched.h>
21		17
22	#if HAVE_SENDFILE	18	/* perl namespace pollution */
23	# if __linux	19	#undef VERSION
24	# include <sys/sendfile.h>	20
25	# elif __freebsd	21	#ifdef _WIN32
26	# include <sys/socket.h>	22
27	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
28	# elif __hpux	24	# undef malloc
29	# include <sys/socket.h>	25	# undef free
30	# elif __solaris /* not yet */	26
31	# 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
32	# else	59	#else
33	# error sendfile support requested but not available	60
34	# 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
35	#endif	68	#endif
36		69
37	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
38	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
39	# define NAME_MAX 4096	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
40	#endif	83	#endif
41		84
42	#if __ia64	85	/*****************************************************************************/
43	# define STACKSIZE 65536	86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
44	#else	89	#else
45	# define STACKSIZE 8192	90	# define expect(expr,value) (expr)
46	#endif	91	#endif
47		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
48	enum {	119	enum {
49	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	};	121	};
59		122
60	typedef struct aio_cb {	123	#include "libeio/eio.c"
61	struct aio_cb *volatile next;
62		124
63	int type;
64
65	/* should receive a cleanup, with unions */
66	int fd, fd2;
67	off_t offset;
68	size_t length;
69	ssize_t result;
70	mode_t mode; /* open */
71	int errorno;
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	STRLEN dataoffset;
76
77	Stat_t *statdata;
78	} aio_cb;
79
80	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
81		127
82	static int started, wanted;	128	static SV *on_next_submit;
83	static volatile int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
84	static int max_outstanding = 1<<30;	130	static int max_outstanding;
85	static int respipe [2];
86		131
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		133
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
92	static volatile aio_req ress, rese; /* queue start, queue end */
93
94	static void free_req (aio_req req)	135	static void req_cancel (aio_req req);
95	{
96	if (req->data)
97	SvREFCNT_dec (req->data);
98		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	{
99	if (req->fh)	353	if (req->self)
		354	{
		355	sv_unmagic (req->self, PERL_MAGIC_ext);
100	SvREFCNT_dec (req->fh);	356	SvREFCNT_dec (req->self);
		357	}
101		358
102	if (req->fh2)	359	SvREFCNT_dec (req->sv1);
103	SvREFCNT_dec (req->fh2);	360	SvREFCNT_dec (req->sv2);
104
105	if (req->statdata)
106	Safefree (req->statdata);
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);	361	SvREFCNT_dec (req->callback);
110
111	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);
113		362
114	Safefree (req);	363	Safefree (req);
115	}	364	}
116		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
		384
117	static void	385	static void
118	poll_wait ()	386	create_respipe (void)
119	{	387	{
120	if (nreqs && !ress)	388	int old_readfd = respipe [0];
		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)
121	{	401	{
122	fd_set rfd;	402	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
123	FD_ZERO(&rfd);	403	croak ("unable to initialize result pipe(2)");
124	FD_SET(respipe [0], &rfd);
125		404
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	405	respipe_close (respipe [0]);
		406	respipe [0] = old_readfd;
127	}	407	}
128	}
129		408
130	static int	409	#ifdef _WIN32
131	poll_cb ()	410	int arg = 1;
132	{	411	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
133	dSP;	412	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
134	int count = 0;	413	#else
135	int do_croak = 0;	414	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
136	aio_req req;	415	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		416	#endif
		417	croak ("unable to initialize result pipe(3)");
137		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	{
		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
		440	FD_ZERO (&rfd);
		441	FD_SET (respipe [0], &rfd);
		442
		443	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		444	}
		445	}
		446
		447	static int poll_cb (void)
		448	{
138	for (;;)	449	for (;;)
139	{	450	{
140	pthread_mutex_lock (&reslock);	451	int res = eio_poll ();
141	req = ress;
142		452
143	if (req)	453	if (res > 0)
144	{
145	ress = req->next;
146
147	if (!ress)
148	{
149	/* read any signals sent by the worker threads */
150	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)
152	;
153
154	rese = 0;
155	}
156	}
157
158	pthread_mutex_unlock (&reslock);
159
160	if (!req)
161	break;
162
163	nreqs--;
164
165	if (req->type == REQ_QUIT)
166	started--;
167	else
168	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);
177
178	if (req->statdata)
179	{
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);
183	}
184
185	ENTER;
186	PUSHMARK (SP);
187
188	if (req->type == REQ_READDIR)
189	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}
211	else
212	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));
214
215	if (req->type == REQ_OPEN)
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID | G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);	454	croak (0);
241	}
242	}
243		455
244	LEAVE;	456	if (!max_outstanding || max_outstanding > eio_nreqs ())
		457	return res;
245		458
246	errno = errorno;	459	poll_wait ();
247	count++;
248	}
249
250	free_req (req);
251	}	460	}
252
253	return count;
254	}	461	}
255		462
256	static void *aio_proc(void *arg);	463	static void atfork_child (void)
257
258	static void
259	start_thread (void)
260	{	464	{
261	sigset_t fullsigset, oldsigset;	465	create_respipe ();
262	pthread_t tid;
263	pthread_attr_t attr;
264
265	pthread_attr_init (&attr);
266	pthread_attr_setstacksize (&attr, STACKSIZE);
267	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268
269	sigfillset (&fullsigset);
270	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271
272	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
273	started++;
274
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);
276	}	466	}
277		467
278	static void	468	static SV *
279	send_req (aio_req req)	469	get_cb (SV *cb_sv)
280	{	470	{
281	while (started < wanted && nreqs >= started)	471	HV *st;
282	start_thread ();	472	GV *gvp;
		473	CV *cv;
283		474
284	nreqs++;	475	if (!SvOK (cb_sv))
		476	return 0;
285		477
286	pthread_mutex_lock (&reqlock);	478	cv = sv_2cv (cb_sv, &st, &gvp, 0);
287		479
288	req->next = 0;	480	if (!cv)
		481	croak ("IO::AIO callback must be undef or a CODE reference");
289		482
290	if (reqe)	483	return (SV *)cv;
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);
300
301	if (nreqs > max_outstanding)
302	for (;;)
303	{
304	poll_cb ();
305
306	if (nreqs <= max_outstanding)
307	break;
308
309	poll_wait ();
310	}
311	}	484	}
312		485
313	static void	486	#define dREQ \
314	end_thread (void)	487	SV *cb_cv; \
315	{
316	aio_req req;	488	aio_req req; \
		489	int req_pri = next_pri; \
		490	next_pri = EIO_PRI_DEFAULT; \
		491	\
		492	cb_cv = get_cb (callback); \
		493	\
317	Newz (0, req, 1, aio_cb);	494	Newz (0, req, 1, eio_req); \
318	req->type = REQ_QUIT;	495	if (!req) \
		496	croak ("out of memory during eio_req allocation"); \
		497	\
		498	req->callback = SvREFCNT_inc (cb_cv); \
		499	req->pri = req_pri
319		500
320	send_req (req);	501	#define REQ_SEND \
321	}	502	PUTBACK; \
		503	req_submit (req); \
		504	SPAGAIN; \
		505	\
		506	if (GIMME_V != G_VOID) \
		507	XPUSHs (req_sv (req, AIO_REQ_KLASS));
322		508
323	static void min_parallel (int nthreads)
324	{
325	if (wanted < nthreads)
326	wanted = nthreads;
327	}
328
329	static void max_parallel (int nthreads)
330	{
331	int cur = started;
332
333	if (wanted > nthreads)
334	wanted = nthreads;
335
336	while (cur > wanted)
337	{
338	end_thread ();
339	cur--;
340	}
341
342	while (started > wanted)
343	{
344	poll_wait ();
345	poll_cb ();
346	}
347	}
348
349	static void create_pipe ()
350	{
351	if (pipe (respipe))
352	croak ("unable to initialize result pipe");
353
354	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
355	croak ("cannot set result pipe to nonblocking mode");
356
357	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
358	croak ("cannot set result pipe to nonblocking mode");
359	}
360
361	/*****************************************************************************/
362	/* work around various missing functions */
363
364	#if !HAVE_PREADWRITE
365	# define pread aio_pread
366	# define pwrite aio_pwrite
367
368	/*
369	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.
372	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374
375	static ssize_t
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{
378	ssize_t res;
379	off_t ooffset;
380
381	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&preadwritelock);
387
388	return res;
389	}
390
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)
393	{
394	ssize_t res;
395	off_t ooffset;
396
397	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&preadwritelock);
403
404	return res;
405	}
406	#endif
407
408	#if !HAVE_FDATASYNC
409	# define fdatasync fsync
410	#endif
411
412	#if !HAVE_READAHEAD
413	# define readahead aio_readahead
414
415	static ssize_t
416	readahead (int fd, off_t offset, size_t count)
417	{
418	char readahead_buf[4096];
419
420	while (count > 0)
421	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423
424	pread (fd, readahead_buf, len, offset);
425	offset += len;
426	count -= len;
427	}
428
429	errno = 0;
430	}
431	#endif
432
433	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r
435
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437
438	static int	509	static int
439	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	510	extract_fd (SV *fh, int wr)
440	{	511	{
441	struct dirent *e;	512	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
442	int errorno;
443		513
444	pthread_mutex_lock (&readdirlock);	514	if (fd < 0)
		515	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
445		516
446	e = readdir (dirp);
447	errorno = errno;
448
449	if (e)
450	{
451	*res = ent;
452	strcpy (ent->d_name, e->d_name);
453	}
454	else
455	*res = 0;
456
457	pthread_mutex_unlock (&readdirlock);
458
459	errno = errorno;
460	return e ? 0 : -1;
461	}
462	#endif
463
464	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467	{
468	ssize_t res;
469
470	if (!count)
471	return 0;
472
473	#if HAVE_SENDFILE
474	# if __linux
475	res = sendfile (ofd, ifd, &offset, count);
476
477	# elif __freebsd
478	/*
479	* Of course, the freebsd sendfile is a dire hack with no thoughts
480	* wasted on making it similar to other I/O functions.
481	*/
482	{
483	off_t sbytes;
484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485
486	if (res < 0 && sbytes)
487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
488	res = sbytes;
489	}
490
491	# elif __hpux
492	res = sendfile (ofd, ifd, offset, count, 0, 0);
493
494	# elif __solaris
495	{
496	struct sendfilevec vec;
497	size_t sbytes;
498
499	vec.sfv_fd = ifd;
500	vec.sfv_flag = 0;
501	vec.sfv_off = offset;
502	vec.sfv_len = count;
503
504	res = sendfilev (ofd, &vec, 1, &sbytes);
505
506	if (res < 0 && sbytes)
507	res = sbytes;
508	}
509
510	# endif
511	#else
512	res = -1;
513	errno = ENOSYS;
514	#endif
515
516	if (res < 0
517	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
518	#if __solaris
519	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
520	#endif
521	)
522	)
523	{
524	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];
526	res = 0;
527
528	while (count)
529	{
530	ssize_t cnt;
531
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
533
534	if (cnt <= 0)
535	{
536	if (cnt && !res) res = -1;
537	break;
538	}
539
540	cnt = write (ofd, buf, cnt);
541
542	if (cnt <= 0)
543	{
544	if (cnt && !res) res = -1;
545	break;
546	}
547
548	offset += cnt;
549	res += cnt;
550	count -= cnt;
551	}
552	}
553
554	return res;
555	}
556
557	/* read a full directory */
558	static int
559	scandir_ (const char *path, void **namesp)
560	{
561	DIR *dirp = opendir (path);
562	union
563	{
564	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;
567	struct dirent *entp;
568	char *name, *names;
569	int memlen = 4096;
570	int memofs = 0;
571	int res = 0;
572	int errorno;
573
574	if (!dirp)
575	return -1;
576
577	names = malloc (memlen);
578
579	for (;;)
580	{
581	errno = 0, readdir_r (dirp, &u.d, &entp);
582
583	if (!entp)
584	break;
585
586	name = entp->d_name;
587
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{
590	int len = strlen (name) + 1;
591
592	res++;
593
594	while (memofs + len > memlen)
595	{
596	memlen *= 2;
597	names = realloc (names, memlen);
598	if (!names)
599	break;
600	}
601
602	memcpy (names + memofs, name, len);
603	memofs += len;
604	}
605	}
606
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;
615	}
616
617	*namesp = (void *)names;
618	return res;
619	}
620
621	/*****************************************************************************/
622
623	static void *
624	aio_proc (void *thr_arg)
625	{
626	aio_req req;
627	int type;
628
629	do
630	{
631	pthread_mutex_lock (&reqlock);
632
633	for (;;)
634	{
635	req = reqs;
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642
643	if (req)
644	break;
645
646	pthread_cond_wait (&reqwait, &reqlock);
647	}
648
649	pthread_mutex_unlock (&reqlock);
650
651	errno = 0; /* strictly unnecessary */
652
653	type = req->type;
654
655	switch (type)
656	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
662
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678
679	case REQ_QUIT:
680	break;
681
682	default:
683	req->result = ENOSYS;
684	break;
685	}
686
687	req->errorno = errno;
688
689	pthread_mutex_lock (&reslock);
690
691	req->next = 0;
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);
704	}
705
706	pthread_mutex_unlock (&reslock);
707	}
708	while (type != REQ_QUIT);
709
710	return 0;	517	return fd;
711	}	518	}
712		519
713	/*****************************************************************************/
714
715	static void atfork_prepare (void)
716	{
717	pthread_mutex_lock (&reqlock);
718	pthread_mutex_lock (&reslock);
719	#if !HAVE_PREADWRITE
720	pthread_mutex_lock (&preadwritelock);
721	#endif
722	#if !HAVE_READDIR_R
723	pthread_mutex_lock (&readdirlock);
724	#endif
725	}
726
727	static void atfork_parent (void)
728	{
729	#if !HAVE_READDIR_R
730	pthread_mutex_unlock (&readdirlock);
731	#endif
732	#if !HAVE_PREADWRITE
733	pthread_mutex_unlock (&preadwritelock);
734	#endif
735	pthread_mutex_unlock (&reslock);
736	pthread_mutex_unlock (&reqlock);
737	}
738
739	static void atfork_child (void)
740	{
741	aio_req prv;
742
743	started = 0;
744
745	while (reqs)
746	{
747	prv = reqs;
748	reqs = prv->next;
749	free_req (prv);
750	}
751
752	reqs = reqe = 0;
753
754	while (ress)
755	{
756	prv = ress;
757	ress = prv->next;
758	free_req (prv);
759	}
760
761	ress = rese = 0;
762
763	close (respipe [0]);
764	close (respipe [1]);
765	create_pipe ();
766
767	atfork_parent ();
768	}
769
770	#define dREQ \
771	aio_req req; \
772	\
773	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \
775	\
776	Newz (0, req, 1, aio_cb); \
777	if (!req) \
778	croak ("out of memory during aio_req allocation"); \
779	\
780	req->callback = newSVsv (callback);
781
782	MODULE = IO::AIO PACKAGE = IO::AIO	520	MODULE = IO::AIO PACKAGE = IO::AIO
783		521
784	PROTOTYPES: ENABLE	522	PROTOTYPES: ENABLE
785		523
786	BOOT:	524	BOOT:
787	{	525	{
788	HV *stash = gv_stashpv ("IO::AIO", 1);	526	stash = gv_stashpv ("IO::AIO", 1);
		527
789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	528	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	529	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	530	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		531	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		532	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		533	#ifndef _WIN32
		534	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		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));
792		540
793	create_pipe ();	541	create_respipe ();
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
795	}
796		542
		543	if (eio_init (want_poll, done_poll) < 0)
		544	croak ("IO::AIO: unable to initialise eio library");
		545
		546	/* atfork child called in fifo order, so before eio's handler */
		547	X_THREAD_ATFORK (0, 0, atfork_child);
		548	}
		549
797	void	550	void
798	min_parallel (nthreads)	551	max_poll_reqs (int nreqs)
799	int nthreads
800	PROTOTYPE: $	552	PROTOTYPE: $
		553	CODE:
		554	eio_set_max_poll_reqs (nreqs);
801		555
802	void	556	void
803	max_parallel (nthreads)	557	max_poll_time (double nseconds)
804	int nthreads
805	PROTOTYPE: $	558	PROTOTYPE: $
806
807	int
808	max_outstanding (nreqs)
809	int nreqs
810	PROTOTYPE: $
811	CODE:	559	CODE:
812	RETVAL = max_outstanding;	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:
813	max_outstanding = nreqs;	584	max_outstanding = maxreqs;
814		585
815	void	586	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	587	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
817	SV * pathname
818	int flags
819	int mode
820	SV * callback
821	PROTOTYPE: $$$;$	588	PROTOTYPE: $$$;$
822	CODE:	589	PPCODE:
823	{	590	{
824	dREQ;	591	dREQ;
825		592
826	req->type = REQ_OPEN;	593	req->type = EIO_OPEN;
827	req->data = newSVsv (pathname);	594	req->sv1 = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	595	req->ptr1 = SvPVbyte_nolen (req->sv1);
829	req->fd = flags;	596	req->int1 = flags;
830	req->mode = mode;	597	req->int2 = mode;
831		598
832	send_req (req);	599	REQ_SEND;
833	}	600	}
834		601
835	void	602	void
836	aio_close (fh,callback=&PL_sv_undef)	603	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
837	SV * fh
838	SV * callback
839	PROTOTYPE: $;$	604	PROTOTYPE: $;$
840	ALIAS:	605	ALIAS:
841	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	606	aio_fsync = EIO_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	607	aio_fdatasync = EIO_FDATASYNC
844	CODE:	608	PPCODE:
845	{	609	{
		610	int fd = extract_fd (fh, 0);
846	dREQ;	611	dREQ;
847		612
848	req->type = ix;	613	req->type = ix;
849	req->fh = newSVsv (fh);	614	req->sv1 = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	615	req->int1 = fd;
851		616
852	send_req (req);	617	REQ_SEND (req);
853	}	618	}
854		619
855	void	620	void
		621	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		622	PROTOTYPE: $$$$;$
		623	PPCODE:
		624	{
		625	int fd = extract_fd (fh, 0);
		626	dREQ;
		627
		628	req->type = EIO_SYNC_FILE_RANGE;
		629	req->sv1 = newSVsv (fh);
		630	req->int1 = fd;
		631	req->offs = SvVAL64 (offset);
		632	req->size = SvVAL64 (nbytes);
		633	req->int2 = flags;
		634
		635	REQ_SEND (req);
		636	}
		637
		638	void
		639	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		640	PROTOTYPE: $;$
		641	PPCODE:
		642	{
		643	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		644	int fd = extract_fd (fh, 0);
		645	dREQ;
		646
		647	if (close_pipe < 0)
		648	{
		649	int pipefd [2];
		650
		651	if (pipe (pipefd) < 0
		652	|| close (pipefd [1]) < 0
		653	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		654	abort (); /*D*/
		655
		656	close_pipe = pipefd [0];
		657	}
		658
		659	req->type = EIO_DUP2;
		660	req->int1 = close_pipe;
		661	req->sv2 = newSVsv (fh);
		662	req->int2 = fd;
		663
		664	REQ_SEND (req);
		665	}
		666
		667	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	668	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
857	SV * fh
858	UV offset
859	UV length
860	SV * data
861	UV dataoffset
862	SV * callback
863	ALIAS:	669	ALIAS:
864	aio_read = REQ_READ	670	aio_read = EIO_READ
865	aio_write = REQ_WRITE	671	aio_write = EIO_WRITE
866	PROTOTYPE: $$$$$;$	672	PROTOTYPE: $$$$$;$
867	CODE:	673	PPCODE:
868	{	674	{
869	aio_req req;
870	STRLEN svlen;	675	STRLEN svlen;
		676	int fd = extract_fd (fh, ix == EIO_WRITE);
871	char *svptr = SvPVbyte (data, svlen);	677	char *svptr = SvPVbyte (data, svlen);
872		678	UV len = SvUV (length);
873	SvUPGRADE (data, SVt_PV);
874	SvPOK_on (data);
875		679
876	if (dataoffset < 0)	680	if (dataoffset < 0)
877	dataoffset += svlen;	681	dataoffset += svlen;
878		682
879	if (dataoffset < 0 || dataoffset > svlen)	683	if (dataoffset < 0 || dataoffset > svlen)
880	croak ("data offset outside of string");	684	croak ("dataoffset outside of data scalar");
881		685
882	if (ix == REQ_WRITE)	686	if (ix == EIO_WRITE)
883	{	687	{
884	/* write: check length and adjust. */	688	/* write: check length and adjust. */
885	if (length < 0 || length + dataoffset > svlen)	689	if (!SvOK (length) || len + dataoffset > svlen)
886	length = svlen - dataoffset;	690	len = svlen - dataoffset;
887	}	691	}
888	else	692	else
889	{	693	{
890	/* read: grow scalar as necessary */	694	/* read: check type and grow scalar as necessary */
		695	SvUPGRADE (data, SVt_PV);
891	svptr = SvGROW (data, length + dataoffset);	696	svptr = SvGROW (data, len + dataoffset + 1);
892	}	697	}
893		698
894	if (length < 0)	699	if (len < 0)
895	croak ("length must not be negative");	700	croak ("length must not be negative");
896		701
897	{	702	{
898	dREQ;	703	dREQ;
899		704
900	req->type = ix;	705	req->type = ix;
901	req->fh = newSVsv (fh);	706	req->sv1 = newSVsv (fh);
902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	707	req->int1 = fd;
903	: IoOFP (sv_2io (fh)));	708	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904	req->offset = offset;	709	req->size = len;
905	req->length = length;
906	req->data = SvREFCNT_inc (data);	710	req->sv2 = SvREFCNT_inc (data);
907	req->dataptr = (char *)svptr + dataoffset;	711	req->ptr2 = (char *)svptr + dataoffset;
		712	req->stroffset = dataoffset;
908		713
909	if (!SvREADONLY (data))	714	if (!SvREADONLY (data))
910	{	715	{
911	SvREADONLY_on (data);	716	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	717	req->flags |= FLAG_SV2_RO_OFF;
913	}	718	}
914		719
915	send_req (req);	720	REQ_SEND;
916	}	721	}
917	}	722	}
918		723
919	void	724	void
		725	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		726	PROTOTYPE: $$;$
		727	PPCODE:
		728	{
		729	SV *data;
		730	dREQ;
		731
		732	req->type = EIO_READLINK;
		733	req->sv1 = newSVsv (path);
		734	req->ptr1 = SvPVbyte_nolen (req->sv1);
		735
		736	REQ_SEND;
		737	}
		738
		739	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	740	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
921	SV * out_fh
922	SV * in_fh
923	UV in_offset
924	UV length
925	SV * callback
926	PROTOTYPE: $$$$;$	741	PROTOTYPE: $$$$;$
927	CODE:	742	PPCODE:
928	{	743	{
		744	int ifd = extract_fd (in_fh , 0);
		745	int ofd = extract_fd (out_fh, 0);
929	dREQ;	746	dREQ;
930		747
931	req->type = REQ_SENDFILE;	748	req->type = EIO_SENDFILE;
932	req->fh = newSVsv (out_fh);	749	req->sv1 = newSVsv (out_fh);
933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	750	req->int1 = ofd;
934	req->fh2 = newSVsv (in_fh);	751	req->sv2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	752	req->int2 = ifd;
936	req->offset = in_offset;	753	req->offs = SvVAL64 (in_offset);
937	req->length = length;	754	req->size = length;
938		755
939	send_req (req);	756	REQ_SEND;
940	}	757	}
941		758
942	void	759	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	760	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
944	SV * fh
945	UV offset
946	IV length
947	SV * callback
948	PROTOTYPE: $$$;$	761	PROTOTYPE: $$$;$
949	CODE:	762	PPCODE:
950	{	763	{
		764	int fd = extract_fd (fh, 0);
951	dREQ;	765	dREQ;
952		766
953	req->type = REQ_READAHEAD;	767	req->type = EIO_READAHEAD;
954	req->fh = newSVsv (fh);	768	req->sv1 = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	769	req->int1 = fd;
956	req->offset = offset;	770	req->offs = SvVAL64 (offset);
957	req->length = length;	771	req->size = length;
958		772
959	send_req (req);	773	REQ_SEND;
960	}	774	}
961		775
962	void	776	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	777	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
964	SV * fh_or_path
965	SV * callback
966	ALIAS:	778	ALIAS:
967	aio_stat = REQ_STAT	779	aio_stat = EIO_STAT
968	aio_lstat = REQ_LSTAT	780	aio_lstat = EIO_LSTAT
969	CODE:	781	PPCODE:
970	{	782	{
971	dREQ;	783	dREQ;
972		784
973	New (0, req->statdata, 1, Stat_t);	785	req->sv1 = newSVsv (fh_or_path);
974	if (!req->statdata)
975	{
976	free_req (req);
977	croak ("out of memory during aio_req->statdata allocation");
978	}
979		786
980	if (SvPOK (fh_or_path))	787	if (SvPOK (req->sv1))
981	{	788	{
982	req->type = ix;	789	req->type = ix;
983	req->data = newSVsv (fh_or_path);
984	req->dataptr = SvPVbyte_nolen (req->data);	790	req->ptr1 = SvPVbyte_nolen (req->sv1);
985	}	791	}
986	else	792	else
987	{	793	{
988	req->type = REQ_FSTAT;	794	req->type = EIO_FSTAT;
989	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		796	}
		797
		798	REQ_SEND;
		799	}
		800
		801	void
		802	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		803	PPCODE:
		804	{
		805	dREQ;
		806
		807	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		808	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		809	req->sv1 = newSVsv (fh_or_path);
		810
		811	if (SvPOK (req->sv1))
991	}	812	{
		813	req->type = EIO_UTIME;
		814	req->ptr1 = SvPVbyte_nolen (req->sv1);
		815	}
		816	else
		817	{
		818	req->type = EIO_FUTIME;
		819	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		820	}
992		821
993	send_req (req);	822	REQ_SEND;
994	}	823	}
995		824
996	void	825	void
		826	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		827	PPCODE:
		828	{
		829	dREQ;
		830
		831	req->sv1 = newSVsv (fh_or_path);
		832	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		833
		834	if (SvPOK (req->sv1))
		835	{
		836	req->type = EIO_TRUNCATE;
		837	req->ptr1 = SvPVbyte_nolen (req->sv1);
		838	}
		839	else
		840	{
		841	req->type = EIO_FTRUNCATE;
		842	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		843	}
		844
		845	REQ_SEND;
		846	}
		847
		848	void
		849	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		850	ALIAS:
		851	aio_chmod = EIO_CHMOD
		852	aio_mkdir = EIO_MKDIR
		853	PPCODE:
		854	{
		855	dREQ;
		856
		857	req->int2 = mode;
		858	req->sv1 = newSVsv (fh_or_path);
		859
		860	if (SvPOK (req->sv1))
		861	{
		862	req->type = ix;
		863	req->ptr1 = SvPVbyte_nolen (req->sv1);
		864	}
		865	else
		866	{
		867	req->type = EIO_FCHMOD;
		868	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		869	}
		870
		871	REQ_SEND;
		872	}
		873
		874	void
		875	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		876	PPCODE:
		877	{
		878	dREQ;
		879
		880	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		881	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		882	req->sv1 = newSVsv (fh_or_path);
		883
		884	if (SvPOK (req->sv1))
		885	{
		886	req->type = EIO_CHOWN;
		887	req->ptr1 = SvPVbyte_nolen (req->sv1);
		888	}
		889	else
		890	{
		891	req->type = EIO_FCHOWN;
		892	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		893	}
		894
		895	REQ_SEND;
		896	}
		897
		898	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	899	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
998	SV * pathname
999	SV * callback
1000	ALIAS:	900	ALIAS:
1001	aio_unlink = REQ_UNLINK	901	aio_unlink = EIO_UNLINK
1002	aio_rmdir = REQ_RMDIR	902	aio_rmdir = EIO_RMDIR
1003	aio_readdir = REQ_READDIR	903	aio_readdir = EIO_READDIR
1004	CODE:	904	PPCODE:
1005	{	905	{
1006	dREQ;	906	dREQ;
1007		907
1008	req->type = ix;	908	req->type = ix;
1009	req->data = newSVsv (pathname);	909	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	910	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011
1012	send_req (req);
1013	}
1014		911
		912	REQ_SEND;
		913	}
		914
1015	void	915	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	916	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1017	SV * oldpath
1018	SV * newpath
1019	SV * callback
1020	ALIAS:	917	ALIAS:
1021	aio_link = REQ_LINK	918	aio_link = EIO_LINK
1022	aio_symlink = REQ_SYMLINK	919	aio_symlink = EIO_SYMLINK
1023	aio_rename = REQ_RENAME	920	aio_rename = EIO_RENAME
1024	CODE:	921	PPCODE:
1025	{	922	{
1026	dREQ;	923	dREQ;
1027		924
1028	req->type = ix;	925	req->type = ix;
1029	req->fh = newSVsv (oldpath);	926	req->sv1 = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	927	req->ptr1 = SvPVbyte_nolen (req->sv1);
1031	req->data = newSVsv (newpath);	928	req->sv2 = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	929	req->ptr2 = SvPVbyte_nolen (req->sv2);
1033		930
1034	send_req (req);	931	REQ_SEND;
1035	}	932	}
1036		933
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	934	void
1041	cancel_most_requests ()	935	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		936	PPCODE:
		937	{
		938	dREQ;
		939
		940	req->type = EIO_MKNOD;
		941	req->sv1 = newSVsv (pathname);
		942	req->ptr1 = SvPVbyte_nolen (req->sv1);
		943	req->int2 = (mode_t)mode;
		944	req->offs = dev;
		945
		946	REQ_SEND;
		947	}
		948
		949	void
		950	aio_busy (double delay, SV *callback=&PL_sv_undef)
		951	PPCODE:
		952	{
		953	dREQ;
		954
		955	req->type = EIO_BUSY;
		956	req->nv1 = delay < 0. ? 0. : delay;
		957
		958	REQ_SEND;
		959	}
		960
		961	void
		962	aio_group (SV *callback=&PL_sv_undef)
1042	PROTOTYPE:	963	PROTOTYPE: ;$
1043	CODE:	964	PPCODE:
1044	{	965	{
1045	aio_req *req;	966	dREQ;
1046		967
1047	pthread_mutex_lock (&reqlock);	968	req->type = EIO_GROUP;
1048	for (req = reqs; req; req = req->next)
1049	req->flags |= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		969
1052	pthread_mutex_lock (&reslock);	970	req_submit (req);
1053	for (req = ress; req; req = req->next)	971	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1054	req->flags |= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}	972	}
1057		973
1058	#endif	974	void
		975	aio_nop (SV *callback=&PL_sv_undef)
		976	ALIAS:
		977	aio_nop = EIO_NOP
		978	aio_sync = EIO_SYNC
		979	PPCODE:
		980	{
		981	dREQ;
		982
		983	req->type = ix;
		984
		985	REQ_SEND;
		986	}
		987
		988	int
		989	aioreq_pri (int pri = 0)
		990	PROTOTYPE: ;$
		991	CODE:
		992	RETVAL = next_pri;
		993	if (items > 0)
		994	{
		995	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		996	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		997	next_pri = pri;
		998	}
		999	OUTPUT:
		1000	RETVAL
		1001
		1002	void
		1003	aioreq_nice (int nice = 0)
		1004	CODE:
		1005	nice = next_pri - nice;
		1006	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1007	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1008	next_pri = nice;
1059		1009
1060	void	1010	void
1061	flush ()	1011	flush ()
1062	PROTOTYPE:	1012	PROTOTYPE:
1063	CODE:	1013	CODE:
1064	while (nreqs)	1014	while (eio_nreqs ())
1065	{	1015	{
1066	poll_wait ();	1016	poll_wait ();
1067	poll_cb ();	1017	poll_cb ();
1068	}	1018	}
1069		1019
1070	void	1020	int
1071	poll()	1021	poll()
1072	PROTOTYPE:	1022	PROTOTYPE:
1073	CODE:	1023	CODE:
1074	if (nreqs)
1075	{
1076	poll_wait ();	1024	poll_wait ();
1077	poll_cb ();	1025	RETVAL = poll_cb ();
1078	}	1026	OUTPUT:
		1027	RETVAL
1079		1028
1080	int	1029	int
1081	poll_fileno()	1030	poll_fileno()
1082	PROTOTYPE:	1031	PROTOTYPE:
1083	CODE:	1032	CODE:
…		…
1095		1044
1096	void	1045	void
1097	poll_wait()	1046	poll_wait()
1098	PROTOTYPE:	1047	PROTOTYPE:
1099	CODE:	1048	CODE:
1100	if (nreqs)
1101	poll_wait ();	1049	poll_wait ();
1102		1050
1103	int	1051	int
1104	nreqs()	1052	nreqs()
1105	PROTOTYPE:	1053	PROTOTYPE:
1106	CODE:	1054	CODE:
1107	RETVAL = nreqs;	1055	RETVAL = eio_nreqs ();
1108	OUTPUT:	1056	OUTPUT:
1109	RETVAL	1057	RETVAL
1110		1058
		1059	int
		1060	nready()
		1061	PROTOTYPE:
		1062	CODE:
		1063	RETVAL = eio_nready ();
		1064	OUTPUT:
		1065	RETVAL
		1066
		1067	int
		1068	npending()
		1069	PROTOTYPE:
		1070	CODE:
		1071	RETVAL = eio_npending ();
		1072	OUTPUT:
		1073	RETVAL
		1074
		1075	int
		1076	nthreads()
		1077	PROTOTYPE:
		1078	CODE:
		1079	RETVAL = eio_nthreads ();
		1080	OUTPUT:
		1081	RETVAL
		1082
		1083	void _on_next_submit (SV *cb)
		1084	CODE:
		1085	SvREFCNT_dec (on_next_submit);
		1086	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1087
		1088	PROTOTYPES: DISABLE
		1089
		1090	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1091
		1092	void
		1093	cancel (aio_req_ornot req)
		1094	CODE:
		1095	eio_cancel (req);
		1096
		1097	void
		1098	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	if (GIMME_V != G_VOID)
		1102	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1103
		1104	if (items > 1)
		1105	{
		1106	SV *cb_cv = get_cb (callback);
		1107
		1108	SvREFCNT_dec (req->callback);
		1109	req->callback = SvREFCNT_inc (cb_cv);
		1110	}
		1111	}
		1112
		1113	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1114
		1115	void
		1116	add (aio_req grp, ...)
		1117	PPCODE:
		1118	{
		1119	int i;
		1120
		1121	if (grp->int1 == 2)
		1122	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1123
		1124	for (i = 1; i < items; ++i )
		1125	{
		1126	aio_req req;
		1127
		1128	if (GIMME_V != G_VOID)
		1129	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1130
		1131	req = SvAIO_REQ (ST (i));
		1132
		1133	if (req)
		1134	eio_grp_add (grp, req);
		1135	}
		1136	}
		1137
		1138	void
		1139	cancel_subs (aio_req_ornot req)
		1140	CODE:
		1141	req_cancel_subs (req);
		1142
		1143	void
		1144	result (aio_req grp, ...)
		1145	CODE:
		1146	{
		1147	int i;
		1148	AV *av;
		1149
		1150	grp->errorno = errno;
		1151
		1152	av = newAV ();
		1153
		1154	for (i = 1; i < items; ++i )
		1155	av_push (av, newSVsv (ST (i)));
		1156
		1157	SvREFCNT_dec (grp->sv1);
		1158	grp->sv1 = (SV *)av;
		1159	}
		1160
		1161	void
		1162	errno (aio_req grp, int errorno = errno)
		1163	CODE:
		1164	grp->errorno = errorno;
		1165
		1166	void
		1167	limit (aio_req grp, int limit)
		1168	CODE:
		1169	eio_grp_limit (grp, limit);
		1170
		1171	void
		1172	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1173	CODE:
		1174	{
		1175	SvREFCNT_dec (grp->sv2);
		1176	grp->sv2 = newSVsv (callback);
		1177	grp->feed = aio_grp_feed;
		1178
		1179	if (grp->int2 <= 0)
		1180	grp->int2 = 2;
		1181
		1182	eio_grp_limit (grp, grp->int2);
		1183	}
		1184

Diff Legend

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