ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 2008 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	#ifdef _WIN32
23	# if __linux	19
24	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
25	# elif __freebsd	21	# undef malloc
26	# include <sys/socket.h>	22	# undef free
27	# include <sys/uio.h>	23
28	# elif __hpux	24	// perl overrides all those nice win32 functions
29	# include <sys/socket.h>	25	# undef open
30	# elif __solaris /* not yet */	26	# undef read
31	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
32	# else	56	#else
33	# error sendfile support requested but not available	57
34	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
35	#endif	65	#endif
36		66
37	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
38	#ifndef NAME_MAX	68
39	# define NAME_MAX 4096	69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
40	#endif	74	#endif
41		75
42	#if __ia64	76	static HV *stash;
43	# define STACKSIZE 65536	77	typedef SV SV8; /* byte-sv, used for argument-checking */
44	#else	78
45	# define STACKSIZE 8192	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
46	#endif	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
		81
		82	#define EIO_COMMON \
		83	SV *callback; \
		84	SV *sv1, *sv2; \
		85	STRLEN stroffset; \
		86	SV *self
		87
		88	#include "libeio/eio.h"
		89
		90	static int req_invoke (eio_req *req);
		91	#define EIO_FINISH(req) req_invoke (req)
		92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
47		96
48	enum {	97	enum {
49	REQ_QUIT,	98	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	};	99	};
59		100
60	#define AIO_CB_KLASS "IO::AIO::CB"	101	#include "libeio/eio.c"
61		102
62	typedef struct aio_cb
63	{
64	struct aio_cb *grp_prev, *grp_next;
65	struct aio_grp *grp;
66
67	struct aio_cb *volatile next;
68
69	SV *self; /* the perl counterpart of this request, if any */
70
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	int type;
80	int fd, fd2;
81	int errorno;
82	STRLEN dataoffset;
83	mode_t mode; /* open */
84	unsigned char cancelled;
85	} aio_cb;
86
87	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
88	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
89		105
90	static int started, wanted;	106	static unsigned int max_outstanding = 0x7fffffff;
91	static volatile int nreqs;
92	static int max_outstanding = 1<<30;
93	static int respipe [2];
94		107
95	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
96	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
97	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98		109
99	static volatile aio_req reqs, reqe; /* queue start, queue end */	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
100	static volatile aio_req ress, rese; /* queue start, queue end */
101		111
102	typedef struct aio_grp	112	static void req_destroy (aio_req req);
103	{	113	static void req_cancel (aio_req req);
104	struct aio_cb *first, *last;
105	SV *callback;
106	int busycount;
107	} aio_grp;
108		114
109	static void aio_grp_begin (aio_grp *grp)	115	static void want_poll (void)
110	{	116	{
111	++grp->busycount;	117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
112	}	119	}
113		120
114	static void aio_grp_end (aio_grp *grp)	121	static void done_poll (void)
115	{	122	{
116	--grp->busycount;	123	/* read any signals sent by the worker threads */
117		124	char buf [4];
118	if (grp->busycount)	125	while (respipe_read (respipe [0], buf, 4) == 4)
119	return;	126	;
120
121	SvREFCNT_dec (grp->callback);
122	grp->callback = 0;
123	}
124
125	static aio_grp *aio_grp_new ()
126	{
127	aio_grp *grp;
128
129	Newz (0, grp, 1, aio_grp);
130	aio_grp_begin (grp);
131
132	return grp;
133	}	127	}
134		128
135	/* must be called at most once */	129	/* must be called at most once */
136	static SV *req_sv (aio_req req)	130	static SV *req_sv (aio_req req, const char *klass)
137	{	131	{
		132	if (!req->self)
		133	{
138	req->self = (SV *)newHV ();	134	req->self = (SV *)newHV ();
139	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	135	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		136	}
140		137
141	return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));	138	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
142	}	139	}
143		140
144	static aio_req SvAIO_REQ (SV *sv)	141	static aio_req SvAIO_REQ (SV *sv)
145	{	142	{
		143	MAGIC *mg;
		144
146	if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv))	145	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
147	croak ("object of class " AIO_CB_KLASS " expected");	146	croak ("object of class " AIO_REQ_KLASS " expected");
148		147
149	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	148	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150		149
151	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
152	}	151	}
153		152
		153	static void aio_grp_feed (aio_req grp)
		154	{
		155	if (grp->sv2 && SvOK (grp->sv2))
		156	{
		157	dSP;
		158
		159	ENTER;
		160	SAVETMPS;
		161	PUSHMARK (SP);
		162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		163	PUTBACK;
		164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		165	SPAGAIN;
		166	FREETMPS;
		167	LEAVE;
		168	}
		169	}
		170
		171	static int req_invoke (eio_req *req)
		172	{
		173	dSP;
		174
		175	if (req->flags & FLAG_SV2_RO_OFF)
		176	SvREADONLY_off (req->sv2);
		177
		178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		179	{
		180	ENTER;
		181	SAVETMPS;
		182	PUSHMARK (SP);
		183	EXTEND (SP, 1);
		184
		185	switch (req->type)
		186	{
		187	case EIO_READDIR:
		188	{
		189	SV *rv = &PL_sv_undef;
		190
		191	if (req->result >= 0)
		192	{
		193	int i;
		194	char *buf = req->ptr2;
		195	AV *av = newAV ();
		196
		197	av_extend (av, req->result - 1);
		198
		199	for (i = 0; i < req->result; ++i)
		200	{
		201	SV *sv = newSVpv (buf, 0);
		202
		203	av_store (av, i, sv);
		204	buf += SvCUR (sv) + 1;
		205	}
		206
		207	rv = sv_2mortal (newRV_noinc ((SV *)av));
		208	}
		209
		210	PUSHs (rv);
		211	}
		212	break;
		213
		214	case EIO_OPEN:
		215	{
		216	/* convert fd to fh */
		217	SV *fh = &PL_sv_undef;
		218
		219	if (req->result >= 0)
		220	{
		221	GV *gv = (GV *)sv_newmortal ();
		222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
		228
		229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
		241	PUSHs (fh);
		242	}
		243	break;
		244
		245	case EIO_GROUP:
		246	req->int1 = 2; /* mark group as finished */
		247
		248	if (req->sv1)
		249	{
		250	int i;
		251	AV *av = (AV *)req->sv1;
		252
		253	EXTEND (SP, AvFILL (av) + 1);
		254	for (i = 0; i <= AvFILL (av); ++i)
		255	PUSHs (*av_fetch (av, i, 0));
		256	}
		257	break;
		258
		259	case EIO_NOP:
		260	case EIO_BUSY:
		261	break;
		262
		263	case EIO_READLINK:
		264	if (req->result > 0)
		265	{
		266	SvCUR_set (req->sv2, req->result);
		267	*SvEND (req->sv2) = 0;
		268	PUSHs (req->sv2);
		269	}
		270	break;
		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
		281	case EIO_READ:
		282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		283	*SvEND (req->sv2) = 0;
		284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
		292	default:
		293	PUSHs (sv_2mortal (newSViv (req->result)));
		294	break;
		295	}
		296
		297	errno = req->errorno;
		298
		299	PUTBACK;
		300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		301	SPAGAIN;
		302
		303	FREETMPS;
		304	LEAVE;
		305
		306	PUTBACK;
		307	}
		308
		309	return !!SvTRUE (ERRSV);
		310	}
		311
154	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
155	{	313	{
156	if (req->self)	314	if (req->self)
157	{	315	{
158	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
159	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
160	}	318	}
161		319
162	if (req->data)
163	SvREFCNT_dec (req->data);
164
165	if (req->fh)
166	SvREFCNT_dec (req->fh);	320	SvREFCNT_dec (req->sv1);
167
168	if (req->fh2)
169	SvREFCNT_dec (req->fh2);	321	SvREFCNT_dec (req->sv2);
170
171	if (req->statdata)
172	Safefree (req->statdata);
173
174	if (req->callback)
175	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
176
177	if (req->type == REQ_READDIR && req->result >= 0)
178	free (req->data2ptr);
179		323
180	Safefree (req);	324	Safefree (req);
181	}	325	}
182		326
		327	static void req_cancel_subs (aio_req grp)
		328	{
		329	aio_req sub;
		330
		331	if (grp->type != EIO_GROUP)
		332	return;
		333
		334	SvREFCNT_dec (grp->sv2);
		335	grp->sv2 = 0;
		336
		337	eio_grp_cancel (grp);
		338	}
		339
		340	#ifdef USE_SOCKETS_AS_HANDLES
		341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		342	#else
		343	# define TO_SOCKET(x) (x)
		344	#endif
		345
183	static void	346	static void
184	poll_wait ()	347	create_respipe (void)
185	{	348	{
186	if (nreqs && !ress)	349	int old_readfd = respipe [0];
		350
		351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
		360
		361	if (old_readfd >= 0)
187	{	362	{
188	fd_set rfd;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
189	FD_ZERO(&rfd);	364	croak ("unable to initialize result pipe(2)");
190	FD_SET(respipe [0], &rfd);
191		365
192	select (respipe [0] + 1, &rfd, 0, 0, 0);	366	respipe_close (respipe [0]);
		367	respipe [0] = old_readfd;
193	}	368	}
194	}
195		369
196	static int	370	#ifdef _WIN32
197	poll_cb ()	371	int arg = 1;
198	{	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
199	dSP;	373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
200	int count = 0;	374	#else
201	int do_croak = 0;	375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
202	aio_req req;	376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
203		379
204	for (;;)	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
		381	respipe_osf [1] = TO_SOCKET (respipe [1]);
		382	}
		383
		384	static void poll_wait (void)
		385	{
		386	fd_set rfd;
		387
		388	while (eio_nreqs ())
205	{	389	{
206	pthread_mutex_lock (&reslock);	390	int size;
207	req = ress;
208		391
		392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
209	if (req)	396	if (size)
210	{
211	ress = req->next;
212
213	if (!ress)
214	{
215	/* read any signals sent by the worker threads */
216	char buf [32];
217	while (read (respipe [0], buf, 32) == 32)
218	;
219
220	rese = 0;
221	}
222	}
223
224	pthread_mutex_unlock (&reslock);
225
226	if (!req)
227	break;	397	return;
228		398
229	nreqs--;	399	maybe_start_thread ();
230		400
231	if (req->type == REQ_QUIT)	401	FD_ZERO (&rfd);
232	started--;	402	FD_SET (respipe [0], &rfd);
233	else
234	{
235	int errorno = errno;
236	errno = req->errorno;
237		403
238	if (req->type == REQ_READ)	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240
241	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
242	SvREADONLY_off (req->data);
243
244	if (req->statdata)
245	{
246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
247	PL_laststatval = req->result;
248	PL_statcache = *(req->statdata);
249	}
250
251	ENTER;
252	PUSHMARK (SP);
253
254	if (req->type == REQ_READDIR)
255	{
256	SV *rv = &PL_sv_undef;
257
258	if (req->result >= 0)
259	{
260	char *buf = req->data2ptr;
261	AV *av = newAV ();
262
263	while (req->result)
264	{
265	SV *sv = newSVpv (buf, 0);
266
267	av_push (av, sv);
268	buf += SvCUR (sv) + 1;
269	req->result--;
270	}
271
272	rv = sv_2mortal (newRV_noinc ((SV *)av));
273	}
274
275	XPUSHs (rv);
276	}
277	else
278	{
279	XPUSHs (sv_2mortal (newSViv (req->result)));
280
281	if (req->type == REQ_OPEN)
282	{
283	/* convert fd to fh */
284	SV *fh;
285
286	PUTBACK;
287	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288	SPAGAIN;
289
290	fh = SvREFCNT_inc (POPs);
291
292	PUSHMARK (SP);
293	XPUSHs (sv_2mortal (fh));
294	}
295	}
296
297	if (SvOK (req->callback) && !req->cancelled)
298	{
299	PUTBACK;
300	call_sv (req->callback, G_VOID | G_EVAL);
301	SPAGAIN;
302
303	if (SvTRUE (ERRSV))
304	{
305	req_free (req);
306	croak (0);
307	}
308	}
309
310	LEAVE;
311
312	errno = errorno;
313	count++;
314	}
315
316	req_free (req);
317	}	405	}
318
319	return count;
320	}	406	}
321		407
322	static void *aio_proc(void *arg);	408	static int poll_cb (void)
323
324	static void
325	start_thread (void)
326	{	409	{
327	sigset_t fullsigset, oldsigset;	410	int res = eio_poll ();
328	pthread_t tid;
329	pthread_attr_t attr;
330		411
331	pthread_attr_init (&attr);	412	if (res > 0)
332	pthread_attr_setstacksize (&attr, STACKSIZE);	413	croak (0);
333	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
334
335	sigfillset (&fullsigset);
336	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
337
338	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
339	started++;
340
341	sigprocmask (SIG_SETMASK, &oldsigset, 0);
342	}
343
344	static void
345	req_send (aio_req req)
346	{
347	while (started < wanted && nreqs >= started)
348	start_thread ();
349
350	nreqs++;
351
352	pthread_mutex_lock (&reqlock);
353
354	req->next = 0;
355
356	if (reqe)
357	{
358	reqe->next = req;
359	reqe = req;
360	}
361	else
362	reqe = reqs = req;
363
364	pthread_cond_signal (&reqwait);
365	pthread_mutex_unlock (&reqlock);
366
367	if (nreqs > max_outstanding)
368	for (;;)
369	{
370	poll_cb ();
371
372	if (nreqs <= max_outstanding)
373	break;
374
375	poll_wait ();
376	}
377	}
378
379	static void
380	end_thread (void)
381	{
382	aio_req req;
383	Newz (0, req, 1, aio_cb);
384	req->type = REQ_QUIT;
385
386	req_send (req);
387	}
388
389	static void min_parallel (int nthreads)
390	{
391	if (wanted < nthreads)
392	wanted = nthreads;
393	}
394
395	static void max_parallel (int nthreads)
396	{
397	int cur = started;
398
399	if (wanted > nthreads)
400	wanted = nthreads;
401
402	while (cur > wanted)
403	{
404	end_thread ();
405	cur--;
406	}
407
408	while (started > wanted)
409	{
410	poll_wait ();
411	poll_cb ();
412	}
413	}
414
415	static void create_pipe ()
416	{
417	if (pipe (respipe))
418	croak ("unable to initialize result pipe");
419
420	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
421	croak ("cannot set result pipe to nonblocking mode");
422
423	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
424	croak ("cannot set result pipe to nonblocking mode");
425	}
426
427	/*****************************************************************************/
428	/* work around various missing functions */
429
430	#if !HAVE_PREADWRITE
431	# define pread aio_pread
432	# define pwrite aio_pwrite
433
434	/*
435	* make our pread/pwrite safe against themselves, but not against
436	* normal read/write by using a mutex. slows down execution a lot,
437	* but that's your problem, not mine.
438	*/
439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440
441	static ssize_t
442	pread (int fd, void *buf, size_t count, off_t offset)
443	{
444	ssize_t res;
445	off_t ooffset;
446
447	pthread_mutex_lock (&preadwritelock);
448	ooffset = lseek (fd, 0, SEEK_CUR);
449	lseek (fd, offset, SEEK_SET);
450	res = read (fd, buf, count);
451	lseek (fd, ooffset, SEEK_SET);
452	pthread_mutex_unlock (&preadwritelock);
453		414
454	return res;	415	return res;
455	}
456
457	static ssize_t
458	pwrite (int fd, void *buf, size_t count, off_t offset)
459	{
460	ssize_t res;
461	off_t ooffset;
462
463	pthread_mutex_lock (&preadwritelock);
464	ooffset = lseek (fd, 0, SEEK_CUR);
465	lseek (fd, offset, SEEK_SET);
466	res = write (fd, buf, count);
467	lseek (fd, offset, SEEK_SET);
468	pthread_mutex_unlock (&preadwritelock);
469
470	return res;
471	}
472	#endif
473
474	#if !HAVE_FDATASYNC
475	# define fdatasync fsync
476	#endif
477
478	#if !HAVE_READAHEAD
479	# define readahead aio_readahead
480
481	static ssize_t
482	readahead (int fd, off_t offset, size_t count)
483	{
484	char readahead_buf[4096];
485
486	while (count > 0)
487	{
488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
489
490	pread (fd, readahead_buf, len, offset);
491	offset += len;
492	count -= len;
493	}
494
495	errno = 0;
496	}
497	#endif
498
499	#if !HAVE_READDIR_R
500	# define readdir_r aio_readdir_r
501
502	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503
504	static int
505	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506	{
507	struct dirent *e;
508	int errorno;
509
510	pthread_mutex_lock (&readdirlock);
511
512	e = readdir (dirp);
513	errorno = errno;
514
515	if (e)
516	{
517	*res = ent;
518	strcpy (ent->d_name, e->d_name);
519	}
520	else
521	*res = 0;
522
523	pthread_mutex_unlock (&readdirlock);
524
525	errno = errorno;
526	return e ? 0 : -1;
527	}
528	#endif
529
530	/* sendfile always needs emulation */
531	static ssize_t
532	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
533	{
534	ssize_t res;
535
536	if (!count)
537	return 0;
538
539	#if HAVE_SENDFILE
540	# if __linux
541	res = sendfile (ofd, ifd, &offset, count);
542
543	# elif __freebsd
544	/*
545	* Of course, the freebsd sendfile is a dire hack with no thoughts
546	* wasted on making it similar to other I/O functions.
547	*/
548	{
549	off_t sbytes;
550	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
551
552	if (res < 0 && sbytes)
553	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
554	res = sbytes;
555	}
556
557	# elif __hpux
558	res = sendfile (ofd, ifd, offset, count, 0, 0);
559
560	# elif __solaris
561	{
562	struct sendfilevec vec;
563	size_t sbytes;
564
565	vec.sfv_fd = ifd;
566	vec.sfv_flag = 0;
567	vec.sfv_off = offset;
568	vec.sfv_len = count;
569
570	res = sendfilev (ofd, &vec, 1, &sbytes);
571
572	if (res < 0 && sbytes)
573	res = sbytes;
574	}
575
576	# endif
577	#else
578	res = -1;
579	errno = ENOSYS;
580	#endif
581
582	if (res < 0
583	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
584	#if __solaris
585	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
586	#endif
587	)
588	)
589	{
590	/* emulate sendfile. this is a major pain in the ass */
591	char buf[4096];
592	res = 0;
593
594	while (count)
595	{
596	ssize_t cnt;
597
598	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
599
600	if (cnt <= 0)
601	{
602	if (cnt && !res) res = -1;
603	break;
604	}
605
606	cnt = write (ofd, buf, cnt);
607
608	if (cnt <= 0)
609	{
610	if (cnt && !res) res = -1;
611	break;
612	}
613
614	offset += cnt;
615	res += cnt;
616	count -= cnt;
617	}
618	}
619
620	return res;
621	}
622
623	/* read a full directory */
624	static int
625	scandir_ (const char *path, void **namesp)
626	{
627	DIR *dirp = opendir (path);
628	union
629	{
630	struct dirent d;
631	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632	} u;
633	struct dirent *entp;
634	char *name, *names;
635	int memlen = 4096;
636	int memofs = 0;
637	int res = 0;
638	int errorno;
639
640	if (!dirp)
641	return -1;
642
643	names = malloc (memlen);
644
645	for (;;)
646	{
647	errno = 0, readdir_r (dirp, &u.d, &entp);
648
649	if (!entp)
650	break;
651
652	name = entp->d_name;
653
654	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
655	{
656	int len = strlen (name) + 1;
657
658	res++;
659
660	while (memofs + len > memlen)
661	{
662	memlen *= 2;
663	names = realloc (names, memlen);
664	if (!names)
665	break;
666	}
667
668	memcpy (names + memofs, name, len);
669	memofs += len;
670	}
671	}
672
673	errorno = errno;
674	closedir (dirp);
675
676	if (errorno)
677	{
678	free (names);
679	errno = errorno;
680	res = -1;
681	}
682
683	*namesp = (void *)names;
684	return res;
685	}
686
687	/*****************************************************************************/
688
689	static void *
690	aio_proc (void *thr_arg)
691	{
692	aio_req req;
693	int type;
694
695	do
696	{
697	pthread_mutex_lock (&reqlock);
698
699	for (;;)
700	{
701	req = reqs;
702
703	if (reqs)
704	{
705	reqs = reqs->next;
706	if (!reqs) reqe = 0;
707	}
708
709	if (req)
710	break;
711
712	pthread_cond_wait (&reqwait, &reqlock);
713	}
714
715	pthread_mutex_unlock (&reqlock);
716
717	errno = 0; /* strictly unnecessary */
718
719	if (!req->cancelled)
720	switch (req->type)
721	{
722	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
723	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
724
725	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
726	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
727
728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
731
732	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
733	case REQ_CLOSE: req->result = close (req->fd); break;
734	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
735	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
736	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
737	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
739
740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
741	case REQ_FSYNC: req->result = fsync (req->fd); break;
742	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
743
744	case REQ_QUIT:
745	break;
746
747	default:
748	req->result = ENOSYS;
749	break;
750	}
751
752	req->errorno = errno;
753
754	pthread_mutex_lock (&reslock);
755
756	req->next = 0;
757
758	if (rese)
759	{
760	rese->next = req;
761	rese = req;
762	}
763	else
764	{
765	rese = ress = req;
766
767	/* write a dummy byte to the pipe so fh becomes ready */
768	write (respipe [1], &respipe, 1);
769	}
770
771	pthread_mutex_unlock (&reslock);
772	}
773	while (type != REQ_QUIT);
774
775	return 0;
776	}
777
778	/*****************************************************************************/
779
780	static void atfork_prepare (void)
781	{
782	pthread_mutex_lock (&reqlock);
783	pthread_mutex_lock (&reslock);
784	#if !HAVE_PREADWRITE
785	pthread_mutex_lock (&preadwritelock);
786	#endif
787	#if !HAVE_READDIR_R
788	pthread_mutex_lock (&readdirlock);
789	#endif
790	}
791
792	static void atfork_parent (void)
793	{
794	#if !HAVE_READDIR_R
795	pthread_mutex_unlock (&readdirlock);
796	#endif
797	#if !HAVE_PREADWRITE
798	pthread_mutex_unlock (&preadwritelock);
799	#endif
800	pthread_mutex_unlock (&reslock);
801	pthread_mutex_unlock (&reqlock);
802	}
803
804	static void atfork_child (void)
805	{
806	aio_req prv;
807
808	started = 0;
809
810	while (reqs)
811	{
812	prv = reqs;
813	reqs = prv->next;
814	req_free (prv);
815	}
816
817	reqs = reqe = 0;
818
819	while (ress)
820	{
821	prv = ress;
822	ress = prv->next;
823	req_free (prv);
824	}
825
826	ress = rese = 0;
827
828	close (respipe [0]);
829	close (respipe [1]);
830	create_pipe ();
831
832	atfork_parent ();
833	}	416	}
834		417
835	#define dREQ \	418	#define dREQ \
836	aio_req req; \	419	aio_req req; \
		420	int req_pri = next_pri; \
		421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
837	\	422	\
838	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
839	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
840	\	425	\
841	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
842	if (!req) \	427	if (!req) \
843	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
844	\	429	\
845	req->callback = newSVsv (callback)	430	req->callback = newSVsv (callback); \
		431	req->pri = req_pri
846		432
847	#define REQ_SEND \	433	#define REQ_SEND \
848	req_send (req); \	434	eio_submit (req); \
849	\	435	\
850	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
851	XPUSHs (req_sv (req));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
852		438
853	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
854		440
855	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
856		442
857	BOOT:	443	BOOT:
858	{	444	{
859	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
		446
860	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
861	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
862	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
863		459
864	create_pipe ();	460	X_COND_CHECK (reqwait);
865	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	461	#else
866	}	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
867		464
		465	create_respipe ();
		466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
		469	}
		470
868	void	471	void
869	min_parallel (nthreads)	472	max_poll_reqs (int nreqs)
870	int nthreads
871	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
872		476
873	void	477	void
874	max_parallel (nthreads)	478	max_poll_time (double nseconds)
875	int nthreads
876	PROTOTYPE: $	479	PROTOTYPE: $
877
878	int
879	max_outstanding (nreqs)
880	int nreqs
881	PROTOTYPE: $
882	CODE:	480	CODE:
883	RETVAL = max_outstanding;	481	eio_set_max_poll_time (nseconds);
		482
		483	void
		484	min_parallel (int nthreads)
		485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
		488
		489	void
		490	max_parallel (int nthreads)
		491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
		494
		495	void
		496	max_idle (int nthreads)
		497	PROTOTYPE: $
		498	CODE:
		499	eio_set_max_idle (nthreads);
		500
		501	void
		502	max_outstanding (int maxreqs)
		503	PROTOTYPE: $
		504	CODE:
884	max_outstanding = nreqs;	505	max_outstanding = maxreqs;
885		506
886	void	507	void
887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
888	SV * pathname
889	int flags
890	int mode
891	SV * callback
892	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
893	PPCODE:	510	PPCODE:
894	{	511	{
895	dREQ;	512	dREQ;
896		513
897	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
898	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
899	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
900	req->fd = flags;	517	req->int1 = flags;
901	req->mode = mode;	518	req->int2 = mode;
902		519
903	REQ_SEND;	520	REQ_SEND;
904	}	521	}
905		522
906	void	523	void
907	aio_close (fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
908	SV * fh
909	SV * callback
910	PROTOTYPE: $;$	525	PROTOTYPE: $;$
911	ALIAS:	526	ALIAS:
912	aio_close = REQ_CLOSE
913	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
914	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
915	PPCODE:	529	PPCODE:
916	{	530	{
917	dREQ;	531	dREQ;
918		532
919	req->type = ix;	533	req->type = ix;
920	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
921	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
922		536
923	REQ_SEND (req);	537	REQ_SEND (req);
924	}	538	}
925		539
926	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
927	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
928	SV * fh
929	UV offset
930	UV length
931	SV * data
932	UV dataoffset
933	SV * callback
934	ALIAS:	570	ALIAS:
935	aio_read = REQ_READ	571	aio_read = EIO_READ
936	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
937	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
938	PPCODE:	574	PPCODE:
939	{	575	{
940	aio_req req;
941	STRLEN svlen;	576	STRLEN svlen;
942	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
943		579
944	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
945	SvPOK_on (data);	581	SvPOK_on (data);
946		582
947	if (dataoffset < 0)	583	if (dataoffset < 0)
948	dataoffset += svlen;	584	dataoffset += svlen;
949		585
950	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
951	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
952		588
953	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
954	{	590	{
955	/* write: check length and adjust. */	591	/* write: check length and adjust. */
956	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
957	length = svlen - dataoffset;	593	len = svlen - dataoffset;
958	}	594	}
959	else	595	else
960	{	596	{
961	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
962	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
963	}	599	}
964		600
965	if (length < 0)	601	if (len < 0)
966	croak ("length must not be negative");	602	croak ("length must not be negative");
967		603
968	{	604	{
969	dREQ;	605	dREQ;
970		606
971	req->type = ix;	607	req->type = ix;
972	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
973	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
974	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
975	req->offset = offset;	612	req->size = len;
976	req->length = length;
977	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
978	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
979		616
980	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
981	{	618	{
982	SvREADONLY_on (data);	619	SvREADONLY_on (data);
983	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
984	}	621	}
985		622
986	REQ_SEND;	623	REQ_SEND;
987	}	624	}
988	}	625	}
989		626
990	void	627	void
		628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		629	PROTOTYPE: $$;$
		630	PPCODE:
		631	{
		632	SV *data;
		633	dREQ;
		634
		635	data = newSV (NAME_MAX);
		636	SvPOK_on (data);
		637
		638	req->type = EIO_READLINK;
		639	req->sv1 = newSVsv (path);
		640	req->ptr1 = SvPVbyte_nolen (req->sv1);
		641	req->sv2 = data;
		642	req->ptr2 = SvPVbyte_nolen (data);
		643
		644	REQ_SEND;
		645	}
		646
		647	void
991	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
992	SV * out_fh
993	SV * in_fh
994	UV in_offset
995	UV length
996	SV * callback
997	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
998	PPCODE:	650	PPCODE:
999	{	651	{
1000	dREQ;	652	dREQ;
1001		653
1002	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1003	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1004	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1005	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1006	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1007	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
1008	req->length = length;	660	req->size = length;
1009		661
1010	REQ_SEND;	662	REQ_SEND;
1011	}	663	}
1012		664
1013	void	665	void
1014	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1015	SV * fh
1016	UV offset
1017	IV length
1018	SV * callback
1019	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1020	PPCODE:	668	PPCODE:
1021	{	669	{
1022	dREQ;	670	dREQ;
1023		671
1024	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1025	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1026	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1027	req->offset = offset;	675	req->offs = SvVAL64 (offset);
1028	req->length = length;	676	req->size = length;
1029		677
1030	REQ_SEND;	678	REQ_SEND;
1031	}	679	}
1032		680
1033	void	681	void
1034	aio_stat (fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1035	SV * fh_or_path
1036	SV * callback
1037	ALIAS:	683	ALIAS:
1038	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1039	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1040	PPCODE:	686	PPCODE:
1041	{	687	{
1042	dREQ;	688	dREQ;
1043		689
1044	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1045	if (!req->statdata)	691	if (!req->ptr2)
1046	{	692	{
1047	req_free (req);	693	req_destroy (req);
1048	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1049	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
1050		699
1051	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1052	{	701	{
1053	req->type = ix;	702	req->type = ix;
1054	req->data = newSVsv (fh_or_path);
1055	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1056	}	704	}
1057	else	705	else
1058	{	706	{
1059	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1060	req->fh = newSVsv (fh_or_path);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1062	}	709	}
1063		710
1064	REQ_SEND;	711	REQ_SEND;
1065	}	712	}
1066		713
1067	void	714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
		725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
		734
		735	REQ_SEND;
		736	}
		737
		738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
1068	aio_unlink (pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1069	SV * pathname
1070	SV * callback
1071	ALIAS:	809	ALIAS:
1072	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1073	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1074	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1075	PPCODE:	813	PPCODE:
1076	{	814	{
1077	dREQ;	815	dREQ;
1078		816
1079	req->type = ix;	817	req->type = ix;
1080	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1081	req->dataptr = SvPVbyte_nolen (req->data);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1082		839
1083	REQ_SEND;	840	REQ_SEND;
1084	}	841	}
1085		842
1086	void	843	void
1087	aio_link (oldpath,newpath,callback=&PL_sv_undef)	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1088	SV * oldpath
1089	SV * newpath
1090	SV * callback
1091	ALIAS:
1092	aio_link = REQ_LINK
1093	aio_symlink = REQ_SYMLINK
1094	aio_rename = REQ_RENAME
1095	PPCODE:	845	PPCODE:
1096	{	846	{
1097	dREQ;	847	dREQ;
1098		848
1099	req->type = ix;	849	req->type = EIO_MKNOD;
1100	req->fh = newSVsv (oldpath);	850	req->sv1 = newSVsv (pathname);
1101	req->data2ptr = SvPVbyte_nolen (req->fh);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1102	req->data = newSVsv (newpath);	852	req->int2 = (mode_t)mode;
1103	req->dataptr = SvPVbyte_nolen (req->data);	853	req->offs = dev;
1104		854
1105	REQ_SEND;	855	REQ_SEND;
1106	}	856	}
1107		857
1108	#if 0
1109
1110	# undocumented, because it does not cancel active requests
1111	void	858	void
1112	cancel_most_requests ()	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
		860	PPCODE:
		861	{
		862	dREQ;
		863
		864	req->type = EIO_BUSY;
		865	req->nv1 = delay < 0. ? 0. : delay;
		866
		867	REQ_SEND;
		868	}
		869
		870	void
		871	aio_group (SV *callback=&PL_sv_undef)
1113	PROTOTYPE:	872	PROTOTYPE: ;$
1114	CODE:	873	PPCODE:
1115	{	874	{
1116	aio_req *req;	875	dREQ;
1117		876
1118	pthread_mutex_lock (&reqlock);	877	req->type = EIO_GROUP;
1119	for (req = reqs; req; req = req->next)
1120	req->flags |= 1;
1121	pthread_mutex_unlock (&reqlock);
1122		878
1123	pthread_mutex_lock (&reslock);	879	eio_submit (req);
1124	for (req = ress; req; req = req->next)	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1125	req->flags |= 1;
1126	pthread_mutex_unlock (&reslock);
1127	}	881	}
1128		882
1129	#endif	883	void
		884	aio_nop (SV *callback=&PL_sv_undef)
		885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->type = ix;
		893
		894	REQ_SEND;
		895	}
		896
		897	int
		898	aioreq_pri (int pri = 0)
		899	PROTOTYPE: ;$
		900	CODE:
		901	RETVAL = next_pri - EIO_PRI_BIAS;
		902	if (items > 0)
		903	{
		904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		906	next_pri = pri + EIO_PRI_BIAS;
		907	}
		908	OUTPUT:
		909	RETVAL
		910
		911	void
		912	aioreq_nice (int nice = 0)
		913	CODE:
		914	nice = next_pri - nice;
		915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		917	next_pri = nice + EIO_PRI_BIAS;
1130		918
1131	void	919	void
1132	flush ()	920	flush ()
1133	PROTOTYPE:	921	PROTOTYPE:
1134	CODE:	922	CODE:
…		…
1136	{	924	{
1137	poll_wait ();	925	poll_wait ();
1138	poll_cb ();	926	poll_cb ();
1139	}	927	}
1140		928
1141	void	929	int
1142	poll()	930	poll()
1143	PROTOTYPE:	931	PROTOTYPE:
1144	CODE:	932	CODE:
1145	if (nreqs)
1146	{
1147	poll_wait ();	933	poll_wait ();
1148	poll_cb ();	934	RETVAL = poll_cb ();
1149	}	935	OUTPUT:
		936	RETVAL
1150		937
1151	int	938	int
1152	poll_fileno()	939	poll_fileno()
1153	PROTOTYPE:	940	PROTOTYPE:
1154	CODE:	941	CODE:
…		…
1166		953
1167	void	954	void
1168	poll_wait()	955	poll_wait()
1169	PROTOTYPE:	956	PROTOTYPE:
1170	CODE:	957	CODE:
1171	if (nreqs)
1172	poll_wait ();	958	poll_wait ();
1173		959
1174	int	960	int
1175	nreqs()	961	nreqs()
1176	PROTOTYPE:	962	PROTOTYPE:
1177	CODE:	963	CODE:
1178	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1179	OUTPUT:	965	OUTPUT:
1180	RETVAL	966	RETVAL
1181		967
		968	int
		969	nready()
		970	PROTOTYPE:
		971	CODE:
		972	RETVAL = eio_nready ();
		973	OUTPUT:
		974	RETVAL
		975
		976	int
		977	npending()
		978	PROTOTYPE:
		979	CODE:
		980	RETVAL = eio_npending ();
		981	OUTPUT:
		982	RETVAL
		983
		984	int
		985	nthreads()
		986	PROTOTYPE:
		987	CODE:
		988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		989	RETVAL = started;
		990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		991	OUTPUT:
		992	RETVAL
		993
		994	PROTOTYPES: DISABLE
		995
1182	MODULE = IO::AIO PACKAGE = IO::AIO::CB	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1183		997
1184	void	998	void
1185	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1186	PROTOTYPE:
1187	CODE:	1000	CODE:
1188	req->cancelled = 1;	1001	eio_cancel (req);
1189		1002
		1003	void
		1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1005	CODE:
		1006	SvREFCNT_dec (req->callback);
		1007	req->callback = newSVsv (callback);
		1008
		1009	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1010
		1011	void
		1012	add (aio_req grp, ...)
		1013	PPCODE:
		1014	{
		1015	int i;
		1016
		1017	if (grp->int1 == 2)
		1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1019
		1020	for (i = 1; i < items; ++i )
		1021	{
		1022	aio_req req;
		1023
		1024	if (GIMME_V != G_VOID)
		1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1026
		1027	req = SvAIO_REQ (ST (i));
		1028
		1029	if (req)
		1030	eio_grp_add (grp, req);
		1031	}
		1032	}
		1033
		1034	void
		1035	cancel_subs (aio_req_ornot req)
		1036	CODE:
		1037	req_cancel_subs (req);
		1038
		1039	void
		1040	result (aio_req grp, ...)
		1041	CODE:
		1042	{
		1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
		1048	av = newAV ();
		1049
		1050	for (i = 1; i < items; ++i )
		1051	av_push (av, newSVsv (ST (i)));
		1052
		1053	SvREFCNT_dec (grp->sv1);
		1054	grp->sv1 = (SV *)av;
		1055	}
		1056
		1057	void
		1058	errno (aio_req grp, int errorno = errno)
		1059	CODE:
		1060	grp->errorno = errorno;
		1061
		1062	void
		1063	limit (aio_req grp, int limit)
		1064	CODE:
		1065	eio_grp_limit (grp, limit);
		1066
		1067	void
		1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1069	CODE:
		1070	{
		1071	SvREFCNT_dec (grp->sv2);
		1072	grp->sv2 = newSVsv (callback);
		1073
		1074	if (grp->int2 <= 0)
		1075	grp->int2 = 2;
		1076
		1077	eio_grp_limit (grp, grp->int2);
		1078	}
		1079

Diff Legend

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