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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.116 by root, Sat May 10 19:25:33 2008 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
28		17
29	#if HAVE_SENDFILE	18	#ifdef _WIN32
30	# if __linux	19
31	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
32	# elif __freebsd	21	# undef malloc
33	# include <sys/socket.h>	22	# undef free
34	# include <sys/uio.h>	23
35	# elif __hpux	24	// perl overrides all those nice win32 functions
36	# include <sys/socket.h>	25	# undef open
37	# elif __solaris /* not yet */	26	# undef read
38	# 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
39	# else	56	#else
40	# error sendfile support requested but not available	57
41	# 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
42	#endif	65	#endif
43		66
44	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
45	#ifndef NAME_MAX	68
46	# 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
47	#endif	74	#endif
48		75
49	#if __ia64	76	static HV *stash;
50	# define STACKSIZE 65536	77	typedef SV SV8; /* byte-sv, used for argument-checking */
51	#else
52	# define STACKSIZE 8192
53	#endif
54
55	enum {
56	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,
67	};
68		78
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		81
72	typedef struct aio_cb	82	#define EIO_COMMON \
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;	83	SV *callback; \
77	SV *fh, *fh2;	84	SV *sv1, *sv2; \
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;	85	STRLEN stroffset; \
85	int type;	86	SV *self
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89		87
90	unsigned char flags;	88	#include "libeio/eio.h"
91	unsigned char pri;
92		89
93	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
95	} aio_cb;	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)
96		96
97	enum {	97	enum {
98	FLAG_CANCELLED = 0x01,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	99	};
100		100
		101	#include "libeio/eio.c"
		102
101	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
103		105
104	enum {
105	PRI_MIN = -4,
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	106	static int max_outstanding = 0;
117	static int respipe [2];
118		107
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		109
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128		111
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	112	static void req_destroy (aio_req req);
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	113	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		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, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
137	{	131	{
138	if (!req->self)	132	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	151	}
158		152
159	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
160	{	154	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
162	{	156	{
163	int old_len = grp->length;	157	dSP;
164		158
165	if (grp->fh2 && SvOK (grp->fh2))	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)
166	{	186	{
167	dSP;	187	case EIO_READDIR:
		188	{
		189	SV *rv = &PL_sv_undef;
168		190
169	ENTER;	191	if (req->result >= 0)
170	SAVETMPS;	192	{
171	PUSHMARK (SP);	193	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	194	char *buf = req->ptr2;
173	PUTBACK;	195	AV *av = newAV ();
174	call_sv (grp->fh2, G_VOID | G_EVAL);	196
175	SPAGAIN;	197	av_extend (av, req->result - 1);
176	FREETMPS;	198
177	LEAVE;	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;
178	}	295	}
179		296
180	/* stop if no progress has been made */	297	errno = req->errorno;
181	if (old_len == grp->length)	298
182	{	299	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	301	SPAGAIN;
185	break;	302
186	}	303	FREETMPS;
		304	LEAVE;
		305
		306	PUTBACK;
187	}	307	}
188	}
189		308
190	static void aio_grp_dec (aio_req grp)	309	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	310	}
204		311
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	pthread_mutex_lock (&reslock);
213	req = ress;
214	pthread_mutex_unlock (&reslock);
215
216	if (req)
217	return;
218
219	FD_ZERO(&rfd);
220	FD_SET(respipe [0], &rfd);
221
222	select (respipe [0] + 1, &rfd, 0, 0, 0);
223	}
224	}
225
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
326	{	313	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	314	if (req->self)
342	{	315	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
345	}	318	}
346		319
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	320	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	321	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352
353	if (req->type == REQ_READDIR && req->result >= 0)
354	free (req->data2ptr);
355		323
356	Safefree (req);	324	Safefree (req);
357	}	325	}
358		326
359	static void req_cancel (aio_req req)	327	static void req_cancel_subs (aio_req grp)
360	{	328	{
361	req->flags |= FLAG_CANCELLED;	329	aio_req sub;
362		330
363	if (req->type == REQ_GROUP)	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
		346	static void
		347	create_respipe (void)
		348	{
		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)
364	{	362	{
365	aio_req sub;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		364	croak ("unable to initialize result pipe(2)");
366		365
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	366	respipe_close (respipe [0]);
368	req_cancel (sub);	367	respipe [0] = old_readfd;
369	}	368	}
370	}
371		369
372	static int poll_cb ()	370	#ifdef _WIN32
373	{	371	int arg = 1;
374	dSP;	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
375	int count = 0;	373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
376	int do_croak = 0;	374	#else
377	aio_req req;	375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
378		379
379	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 ())
380	{	389	{
381	pthread_mutex_lock (&reslock);	390	int size;
382	req = ress;
383		391
		392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
384	if (req)	396	if (size)
385	{
386	ress = req->next;
387
388	if (!ress)
389	{
390	/* read any signals sent by the worker threads */
391	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}
397	}
398
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;	397	return;
403		398
404	--nreqs;	399	maybe_start_thread ();
405		400
406	if (req->type == REQ_QUIT)	401	FD_ZERO (&rfd);
407	started--;	402	FD_SET (respipe [0], &rfd);
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417		403
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	405	}
435
436	return count;
437	}	406	}
438		407
439	static void *aio_proc(void *arg);	408	static int poll_cb (void)
440
441	static void start_thread (void)
442	{	409	{
443	sigset_t fullsigset, oldsigset;	410	int res;
444	pthread_t tid;
445	pthread_attr_t attr;
446		411
447	pthread_attr_init (&attr);	412	do
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{	413	{
473	reqe->next = req;	414	res = eio_poll ();
474	reqe = req;	415
		416	if (res > 0)
		417	croak (0);
475	}	418	}
476	else	419	while (max_outstanding && max_outstanding <= eio_nreqs ());
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}
528
529	static void create_pipe ()
530	{
531	if (pipe (respipe))
532	croak ("unable to initialize result pipe");
533
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
535	croak ("cannot set result pipe to nonblocking mode");
536
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
538	croak ("cannot set result pipe to nonblocking mode");
539	}
540
541	/*****************************************************************************/
542	/* work around various missing functions */
543
544	#if !HAVE_PREADWRITE
545	# define pread aio_pread
546	# define pwrite aio_pwrite
547
548	/*
549	* make our pread/pwrite safe against themselves, but not against
550	* normal read/write by using a mutex. slows down execution a lot,
551	* but that's your problem, not mine.
552	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
554
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{
557	ssize_t res;
558	off_t ooffset;
559
560	pthread_mutex_lock (&preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);
566		420
567	return res;	421	return res;
568	}	422	}
569		423
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
571	{
572	ssize_t res;
573	off_t ooffset;
574
575	pthread_mutex_lock (&preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);
581
582	return res;
583	}
584	#endif
585
586	#if !HAVE_FDATASYNC
587	# define fdatasync fsync
588	#endif
589
590	#if !HAVE_READAHEAD
591	# define readahead aio_readahead
592
593	static ssize_t readahead (int fd, off_t offset, size_t count)
594	{
595	char readahead_buf[4096];
596
597	while (count > 0)
598	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
600
601	pread (fd, readahead_buf, len, offset);
602	offset += len;
603	count -= len;
604	}
605
606	errno = 0;
607	}
608	#endif
609
610	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r
612
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
614
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{
617	struct dirent *e;
618	int errorno;
619
620	pthread_mutex_lock (&readdirlock);
621
622	e = readdir (dirp);
623	errorno = errno;
624
625	if (e)
626	{
627	*res = ent;
628	strcpy (ent->d_name, e->d_name);
629	}
630	else
631	*res = 0;
632
633	pthread_mutex_unlock (&readdirlock);
634
635	errno = errorno;
636	return e ? 0 : -1;
637	}
638	#endif
639
640	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
642	{
643	ssize_t res;
644
645	if (!count)
646	return 0;
647
648	#if HAVE_SENDFILE
649	# if __linux
650	res = sendfile (ofd, ifd, &offset, count);
651
652	# elif __freebsd
653	/*
654	* Of course, the freebsd sendfile is a dire hack with no thoughts
655	* wasted on making it similar to other I/O functions.
656	*/
657	{
658	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660
661	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
663	res = sbytes;
664	}
665
666	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);
668
669	# elif __solaris
670	{
671	struct sendfilevec vec;
672	size_t sbytes;
673
674	vec.sfv_fd = ifd;
675	vec.sfv_flag = 0;
676	vec.sfv_off = offset;
677	vec.sfv_len = count;
678
679	res = sendfilev (ofd, &vec, 1, &sbytes);
680
681	if (res < 0 && sbytes)
682	res = sbytes;
683	}
684
685	# endif
686	#else
687	res = -1;
688	errno = ENOSYS;
689	#endif
690
691	if (res < 0
692	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
693	#if __solaris
694	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
695	#endif
696	)
697	)
698	{
699	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];
701	res = 0;
702
703	while (count)
704	{
705	ssize_t cnt;
706
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
708
709	if (cnt <= 0)
710	{
711	if (cnt && !res) res = -1;
712	break;
713	}
714
715	cnt = write (ofd, buf, cnt);
716
717	if (cnt <= 0)
718	{
719	if (cnt && !res) res = -1;
720	break;
721	}
722
723	offset += cnt;
724	res += cnt;
725	count -= cnt;
726	}
727	}
728
729	return res;
730	}
731
732	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)
734	{
735	DIR *dirp = opendir (path);
736	union
737	{
738	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;
741	struct dirent *entp;
742	char *name, *names;
743	int memlen = 4096;
744	int memofs = 0;
745	int res = 0;
746	int errorno;
747
748	if (!dirp)
749	return -1;
750
751	names = malloc (memlen);
752
753	for (;;)
754	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);
756
757	if (!entp)
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805
806	for (;;)
807	{
808	req = reqs;
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815
816	if (req)
817	break;
818
819	pthread_cond_wait (&reqwait, &reqlock);
820	}
821
822	pthread_mutex_unlock (&reqlock);
823
824	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826
827	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)
829	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
832
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
835
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
839
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
847
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
851
852	case REQ_SLEEP:
853	{
854	struct timeval tv;
855
856	tv.tv_sec = req->fd;
857	tv.tv_usec = req->fd2;
858
859	req->result = select (0, 0, 0, 0, &tv);
860	}
861
862	case REQ_GROUP:
863	case REQ_NOP:
864	case REQ_QUIT:
865	break;
866
867	default:
868	req->result = ENOSYS;
869	break;
870	}
871
872	req->errorno = errno;
873
874	pthread_mutex_lock (&reslock);
875
876	req->next = 0;
877
878	if (rese)
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);
889	}
890
891	pthread_mutex_unlock (&reslock);
892	}
893	while (type != REQ_QUIT);
894
895	return 0;
896	}
897
898	/*****************************************************************************/
899
900	static void atfork_prepare (void)
901	{
902	pthread_mutex_lock (&reqlock);
903	pthread_mutex_lock (&reslock);
904	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);
906	#endif
907	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);
909	#endif
910	}
911
912	static void atfork_parent (void)
913	{
914	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);
916	#endif
917	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);
919	#endif
920	pthread_mutex_unlock (&reslock);
921	pthread_mutex_unlock (&reqlock);
922	}
923
924	static void atfork_child (void)	424	static void atfork_child (void)
925	{	425	{
926	aio_req prv;
927
928	started = 0;
929
930	while (reqs)
931	{
932	prv = reqs;
933	reqs = prv->next;
934	req_free (prv);
935	}
936
937	reqs = reqe = 0;
938
939	while (ress)
940	{
941	prv = ress;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();	426	create_respipe ();
951
952	atfork_parent ();
953	}	427	}
954		428
955	#define dREQ \	429	#define dREQ \
956	aio_req req; \	430	aio_req req; \
957	int req_pri = next_pri; \	431	int req_pri = next_pri; \
958	next_pri = DEFAULT_PRI + PRI_BIAS; \	432	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
959	\	433	\
960	if (SvOK (callback) && !SvROK (callback)) \	434	if (SvOK (callback) && !SvROK (callback)) \
961	croak ("callback must be undef or of reference type"); \	435	croak ("callback must be undef or of reference type"); \
962	\	436	\
963	Newz (0, req, 1, aio_cb); \	437	Newz (0, req, 1, eio_req); \
964	if (!req) \	438	if (!req) \
965	croak ("out of memory during aio_req allocation"); \	439	croak ("out of memory during eio_req allocation"); \
966	\	440	\
967	req->callback = newSVsv (callback); \	441	req->callback = newSVsv (callback); \
968	req->pri = req_pri	442	req->pri = req_pri
969		443
970	#define REQ_SEND \	444	#define REQ_SEND \
971	req_send (req); \	445	eio_submit (req); \
972	\	446	\
973	if (GIMME_V != G_VOID) \	447	if (GIMME_V != G_VOID) \
974	XPUSHs (req_sv (req, AIO_REQ_KLASS));	448	XPUSHs (req_sv (req, AIO_REQ_KLASS));
975		449
976	MODULE = IO::AIO PACKAGE = IO::AIO	450	MODULE = IO::AIO PACKAGE = IO::AIO
977		451
978	PROTOTYPES: ENABLE	452	PROTOTYPES: ENABLE
979		453
980	BOOT:	454	BOOT:
981	{	455	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	456	stash = gv_stashpv ("IO::AIO", 1);
		457
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	458	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	459	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	460	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		461	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		462	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		463	#ifdef _WIN32
		464	X_MUTEX_CHECK (wrklock);
		465	X_MUTEX_CHECK (reslock);
		466	X_MUTEX_CHECK (reqlock);
		467	X_MUTEX_CHECK (reqwait);
		468	X_MUTEX_CHECK (preadwritelock);
		469	X_MUTEX_CHECK (readdirlock);
986		470
987	create_pipe ();	471	X_COND_CHECK (reqwait);
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	472	#else
989	}	473	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		474	#endif
990		475
		476	create_respipe ();
		477
		478	if (eio_init (want_poll, done_poll) < 0)
		479	croak ("IO::AIO: unable to initialise eio library");
		480
		481	/* atfork child called in fifo order, so before eio's handler */
		482	X_THREAD_ATFORK (0, 0, atfork_child);
		483	}
		484
991	void	485	void
992	min_parallel (nthreads)	486	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	487	PROTOTYPE: $
		488	CODE:
		489	eio_set_max_poll_reqs (nreqs);
995		490
996	void	491	void
997	max_parallel (nthreads)	492	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	493	PROTOTYPE: $
1000
1001	int
1002	max_outstanding (nreqs)
1003	int nreqs
1004	PROTOTYPE: $
1005	CODE:	494	CODE:
1006	RETVAL = max_outstanding;	495	eio_set_max_poll_time (nseconds);
		496
		497	void
		498	min_parallel (int nthreads)
		499	PROTOTYPE: $
		500	CODE:
		501	eio_set_min_parallel (nthreads);
		502
		503	void
		504	max_parallel (int nthreads)
		505	PROTOTYPE: $
		506	CODE:
		507	eio_set_max_parallel (nthreads);
		508
		509	void
		510	max_idle (int nthreads)
		511	PROTOTYPE: $
		512	CODE:
		513	eio_set_max_idle (nthreads);
		514
		515	void
		516	max_outstanding (int maxreqs)
		517	PROTOTYPE: $
		518	CODE:
1007	max_outstanding = nreqs;	519	max_outstanding = maxreqs;
1008		520
1009	void	521	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	522	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$	523	PROTOTYPE: $$$;$
1016	PPCODE:	524	PPCODE:
1017	{	525	{
1018	dREQ;	526	dREQ;
1019		527
1020	req->type = REQ_OPEN;	528	req->type = EIO_OPEN;
1021	req->data = newSVsv (pathname);	529	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	530	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	531	req->int1 = flags;
1024	req->mode = mode;	532	req->int2 = mode;
1025		533
1026	REQ_SEND;	534	REQ_SEND;
1027	}	535	}
1028		536
1029	void	537	void
1030	aio_close (fh,callback=&PL_sv_undef)	538	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	539	PROTOTYPE: $;$
1034	ALIAS:	540	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	541	aio_fsync = EIO_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	542	aio_fdatasync = EIO_FDATASYNC
1038	PPCODE:	543	PPCODE:
1039	{	544	{
1040	dREQ;	545	dREQ;
1041		546
1042	req->type = ix;	547	req->type = ix;
1043	req->fh = newSVsv (fh);	548	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	549	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		550
1046	REQ_SEND (req);	551	REQ_SEND (req);
1047	}	552	}
1048		553
1049	void	554	void
		555	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		556	PROTOTYPE: $;$
		557	PPCODE:
		558	{
		559	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		560	dREQ;
		561
		562	if (close_pipe < 0)
		563	{
		564	int pipefd [2];
		565
		566	if (pipe (pipefd) < 0
		567	|| close (pipefd [1]) < 0
		568	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		569	abort (); /*D*/
		570
		571	close_pipe = pipefd [0];
		572	}
		573
		574	req->type = EIO_DUP2;
		575	req->int1 = close_pipe;
		576	req->sv2 = newSVsv (fh);
		577	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		578
		579	REQ_SEND (req);
		580	}
		581
		582	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	583	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:	584	ALIAS:
1058	aio_read = REQ_READ	585	aio_read = EIO_READ
1059	aio_write = REQ_WRITE	586	aio_write = EIO_WRITE
1060	PROTOTYPE: $$$$$;$	587	PROTOTYPE: $$$$$;$
1061	PPCODE:	588	PPCODE:
1062	{	589	{
1063	aio_req req;
1064	STRLEN svlen;	590	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	591	char *svptr = SvPVbyte (data, svlen);
		592	UV len = SvUV (length);
1066		593
1067	SvUPGRADE (data, SVt_PV);	594	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	595	SvPOK_on (data);
1069		596
1070	if (dataoffset < 0)	597	if (dataoffset < 0)
1071	dataoffset += svlen;	598	dataoffset += svlen;
1072		599
1073	if (dataoffset < 0 || dataoffset > svlen)	600	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	601	croak ("dataoffset outside of data scalar");
1075		602
1076	if (ix == REQ_WRITE)	603	if (ix == EIO_WRITE)
1077	{	604	{
1078	/* write: check length and adjust. */	605	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	606	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	607	len = svlen - dataoffset;
1081	}	608	}
1082	else	609	else
1083	{	610	{
1084	/* read: grow scalar as necessary */	611	/* read: grow scalar as necessary */
1085	svptr = SvGROW (data, length + dataoffset);	612	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	613	}
1087		614
1088	if (length < 0)	615	if (len < 0)
1089	croak ("length must not be negative");	616	croak ("length must not be negative");
1090		617
1091	{	618	{
1092	dREQ;	619	dREQ;
1093		620
1094	req->type = ix;	621	req->type = ix;
1095	req->fh = newSVsv (fh);	622	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	623	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	624	: IoOFP (sv_2io (fh)));
		625	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	626	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	627	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	628	req->ptr2 = (char *)svptr + dataoffset;
		629	req->stroffset = dataoffset;
1102		630
1103	if (!SvREADONLY (data))	631	if (!SvREADONLY (data))
1104	{	632	{
1105	SvREADONLY_on (data);	633	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	634	req->flags |= FLAG_SV2_RO_OFF;
1107	}	635	}
1108		636
1109	REQ_SEND;	637	REQ_SEND;
1110	}	638	}
1111	}	639	}
1112		640
1113	void	641	void
		642	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		643	PROTOTYPE: $$;$
		644	PPCODE:
		645	{
		646	SV *data;
		647	dREQ;
		648
		649	data = newSV (NAME_MAX);
		650	SvPOK_on (data);
		651
		652	req->type = EIO_READLINK;
		653	req->sv1 = newSVsv (path);
		654	req->ptr1 = SvPVbyte_nolen (req->sv1);
		655	req->sv2 = data;
		656	req->ptr2 = SvPVbyte_nolen (data);
		657
		658	REQ_SEND;
		659	}
		660
		661	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	662	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1115	SV * out_fh
1116	SV * in_fh
1117	UV in_offset
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$	663	PROTOTYPE: $$$$;$
1121	PPCODE:	664	PPCODE:
1122	{	665	{
1123	dREQ;	666	dREQ;
1124		667
1125	req->type = REQ_SENDFILE;	668	req->type = EIO_SENDFILE;
1126	req->fh = newSVsv (out_fh);	669	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	670	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	671	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	672	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	673	req->offs = SvVAL64 (in_offset);
1131	req->length = length;	674	req->size = length;
1132		675
1133	REQ_SEND;	676	REQ_SEND;
1134	}	677	}
1135		678
1136	void	679	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	680	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	681	PROTOTYPE: $$$;$
1143	PPCODE:	682	PPCODE:
1144	{	683	{
1145	dREQ;	684	dREQ;
1146		685
1147	req->type = REQ_READAHEAD;	686	req->type = EIO_READAHEAD;
1148	req->fh = newSVsv (fh);	687	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	689	req->offs = SvVAL64 (offset);
1151	req->length = length;	690	req->size = length;
1152		691
1153	REQ_SEND;	692	REQ_SEND;
1154	}	693	}
1155		694
1156	void	695	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	696	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	697	ALIAS:
1161	aio_stat = REQ_STAT	698	aio_stat = EIO_STAT
1162	aio_lstat = REQ_LSTAT	699	aio_lstat = EIO_LSTAT
1163	PPCODE:	700	PPCODE:
1164	{	701	{
1165	dREQ;	702	dREQ;
1166		703
1167	New (0, req->statdata, 1, Stat_t);	704	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1168	if (!req->statdata)	705	if (!req->ptr2)
1169	{	706	{
1170	req_free (req);	707	req_destroy (req);
1171	croak ("out of memory during aio_req->statdata allocation");	708	croak ("out of memory during aio_stat statdata allocation");
1172	}	709	}
		710
		711	req->flags |= EIO_FLAG_PTR2_FREE;
		712	req->sv1 = newSVsv (fh_or_path);
1173		713
1174	if (SvPOK (fh_or_path))	714	if (SvPOK (fh_or_path))
1175	{	715	{
1176	req->type = ix;	716	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	717	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	718	}
1180	else	719	else
1181	{	720	{
1182	req->type = REQ_FSTAT;	721	req->type = EIO_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	722	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	723	}
1186		724
1187	REQ_SEND;	725	REQ_SEND;
1188	}	726	}
1189		727
1190	void	728	void
		729	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		730	PPCODE:
		731	{
		732	dREQ;
		733
		734	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		735	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		736	req->sv1 = newSVsv (fh_or_path);
		737
		738	if (SvPOK (fh_or_path))
		739	{
		740	req->type = EIO_UTIME;
		741	req->ptr1 = SvPVbyte_nolen (req->sv1);
		742	}
		743	else
		744	{
		745	req->type = EIO_FUTIME;
		746	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		747	}
		748
		749	REQ_SEND;
		750	}
		751
		752	void
		753	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		754	PPCODE:
		755	{
		756	dREQ;
		757
		758	req->sv1 = newSVsv (fh_or_path);
		759	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		760
		761	if (SvPOK (fh_or_path))
		762	{
		763	req->type = EIO_TRUNCATE;
		764	req->ptr1 = SvPVbyte_nolen (req->sv1);
		765	}
		766	else
		767	{
		768	req->type = EIO_FTRUNCATE;
		769	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		770	}
		771
		772	REQ_SEND;
		773	}
		774
		775	void
		776	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		777	ALIAS:
		778	aio_chmod = EIO_CHMOD
		779	aio_fchmod = EIO_FCHMOD
		780	aio_mkdir = EIO_MKDIR
		781	PPCODE:
		782	{
		783	dREQ;
		784
		785	req->type = ix;
		786	req->int2 = mode;
		787	req->sv1 = newSVsv (fh_or_path);
		788
		789	if (ix == EIO_FCHMOD)
		790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		791	else
		792	req->ptr1 = SvPVbyte_nolen (req->sv1);
		793
		794	REQ_SEND;
		795	}
		796
		797	void
		798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		799	PPCODE:
		800	{
		801	dREQ;
		802
		803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		805	req->sv1 = newSVsv (fh_or_path);
		806
		807	if (SvPOK (fh_or_path))
		808	{
		809	req->type = EIO_CHOWN;
		810	req->ptr1 = SvPVbyte_nolen (req->sv1);
		811	}
		812	else
		813	{
		814	req->type = EIO_FCHOWN;
		815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		816	}
		817
		818	REQ_SEND;
		819	}
		820
		821	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	823	ALIAS:
1195	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1196	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1197	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1198	PPCODE:	827	PPCODE:
1199	{	828	{
1200	dREQ;	829	dREQ;
1201		830
1202	req->type = ix;	831	req->type = ix;
1203	req->data = newSVsv (pathname);	832	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	833	req->ptr1 = SvPVbyte_nolen (req->sv1);
		834
		835	REQ_SEND;
		836	}
		837
		838	void
		839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
		844	PPCODE:
		845	{
		846	dREQ;
		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
1205		853
1206	REQ_SEND;	854	REQ_SEND;
1207	}	855	}
1208		856
1209	void	857	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:
1215	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME
1218	PPCODE:	859	PPCODE:
1219	{	860	{
1220	dREQ;	861	dREQ;
1221		862
1222	req->type = ix;	863	req->type = EIO_MKNOD;
1223	req->fh = newSVsv (oldpath);	864	req->sv1 = newSVsv (pathname);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1225	req->data = newSVsv (newpath);	866	req->int2 = (mode_t)mode;
1226	req->dataptr = SvPVbyte_nolen (req->data);	867	req->offs = dev;
1227		868
1228	REQ_SEND;	869	REQ_SEND;
1229	}	870	}
1230		871
1231	void	872	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	874	PPCODE:
1236	{	875	{
1237	dREQ;	876	dREQ;
1238		877
1239	req->type = REQ_SLEEP;	878	req->type = EIO_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1242		880
1243	REQ_SEND;	881	REQ_SEND;
1244	}	882	}
1245		883
1246	void	884	void
1247	aio_group (callback=&PL_sv_undef)	885	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1250	PPCODE:	887	PPCODE:
1251	{	888	{
1252	dREQ;	889	dREQ;
1253		890
1254	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
		892
1255	req_send (req);	893	eio_submit (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	895	}
1259		896
1260	void	897	void
1261	aio_nop (callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback	899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
1263	PPCODE:	902	PPCODE:
1264	{	903	{
1265	dREQ;	904	dREQ;
1266		905
1267	req->type = REQ_NOP;	906	req->type = ix;
1268		907
1269	REQ_SEND;	908	REQ_SEND;
1270	}	909	}
1271		910
1272	#if 0	911	int
1273		912	aioreq_pri (int pri = 0)
1274	void	913	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	914	CODE:
		915	RETVAL = next_pri - EIO_PRI_BIAS;
		916	if (items > 0)
		917	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	920	next_pri = pri + EIO_PRI_BIAS;
		921	}
		922	OUTPUT:
		923	RETVAL
1280		924
1281	#endif	925	void
		926	aioreq_nice (int nice = 0)
		927	CODE:
		928	nice = next_pri - nice;
		929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		931	next_pri = nice + EIO_PRI_BIAS;
1282		932
1283	void	933	void
1284	flush ()	934	flush ()
1285	PROTOTYPE:	935	PROTOTYPE:
1286	CODE:	936	CODE:
1287	while (nreqs)	937	while (eio_nreqs ())
1288	{	938	{
1289	poll_wait ();	939	poll_wait ();
1290	poll_cb ();	940	poll_cb ();
1291	}	941	}
1292		942
1293	void	943	int
1294	poll()	944	poll()
1295	PROTOTYPE:	945	PROTOTYPE:
1296	CODE:	946	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	947	poll_wait ();
1300	poll_cb ();	948	RETVAL = poll_cb ();
1301	}	949	OUTPUT:
		950	RETVAL
1302		951
1303	int	952	int
1304	poll_fileno()	953	poll_fileno()
1305	PROTOTYPE:	954	PROTOTYPE:
1306	CODE:	955	CODE:
…		…
1318		967
1319	void	968	void
1320	poll_wait()	969	poll_wait()
1321	PROTOTYPE:	970	PROTOTYPE:
1322	CODE:	971	CODE:
1323	if (nreqs)
1324	poll_wait ();	972	poll_wait ();
1325		973
1326	int	974	int
1327	nreqs()	975	nreqs()
1328	PROTOTYPE:	976	PROTOTYPE:
1329	CODE:	977	CODE:
1330	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1331	OUTPUT:	979	OUTPUT:
1332	RETVAL	980	RETVAL
1333		981
		982	int
		983	nready()
		984	PROTOTYPE:
		985	CODE:
		986	RETVAL = eio_nready ();
		987	OUTPUT:
		988	RETVAL
		989
		990	int
		991	npending()
		992	PROTOTYPE:
		993	CODE:
		994	RETVAL = eio_npending ();
		995	OUTPUT:
		996	RETVAL
		997
		998	int
		999	nthreads()
		1000	PROTOTYPE:
		1001	CODE:
		1002	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1003	RETVAL = started;
		1004	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1005	OUTPUT:
		1006	RETVAL
		1007
1334	PROTOTYPES: DISABLE	1008	PROTOTYPES: DISABLE
1335		1009
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1010	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1011
1338	void	1012	void
1339	cancel (aio_req_ornot req)	1013	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1014	CODE:
1342	req_cancel (req);	1015	eio_cancel (req);
1343		1016
1344	void	1017	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1018	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1346	CODE:	1019	CODE:
1347	SvREFCNT_dec (req->callback);	1020	SvREFCNT_dec (req->callback);
…		…
1352	void	1025	void
1353	add (aio_req grp, ...)	1026	add (aio_req grp, ...)
1354	PPCODE:	1027	PPCODE:
1355	{	1028	{
1356	int i;	1029	int i;
1357	aio_req req;
1358		1030
1359	if (grp->fd == 2)	1031	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1032	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		1033
1362	for (i = 1; i < items; ++i )	1034	for (i = 1; i < items; ++i )
1363	{	1035	{
		1036	aio_req req;
		1037
1364	if (GIMME_V != G_VOID)	1038	if (GIMME_V != G_VOID)
1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1366		1040
1367	req = SvAIO_REQ (ST (i));	1041	req = SvAIO_REQ (ST (i));
1368		1042
1369	if (req)	1043	if (req)
1370	{	1044	eio_grp_add (grp, req);
1371	++grp->length;
1372	req->grp = grp;
1373
1374	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;
1376
1377	if (grp->grp_first)
1378	grp->grp_first->grp_prev = req;
1379
1380	grp->grp_first = req;
1381	}	1045	}
1382	}
1383	}	1046	}
		1047
		1048	void
		1049	cancel_subs (aio_req_ornot req)
		1050	CODE:
		1051	req_cancel_subs (req);
1384		1052
1385	void	1053	void
1386	result (aio_req grp, ...)	1054	result (aio_req grp, ...)
1387	CODE:	1055	CODE:
1388	{	1056	{
1389	int i;	1057	int i;
		1058	AV *av;
		1059
		1060	grp->errorno = errno;
		1061
1390	AV *av = newAV ();	1062	av = newAV ();
1391		1063
1392	for (i = 1; i < items; ++i )	1064	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1065	av_push (av, newSVsv (ST (i)));
1394		1066
1395	SvREFCNT_dec (grp->data);	1067	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1068	grp->sv1 = (SV *)av;
1397	}	1069	}
1398		1070
1399	void	1071	void
		1072	errno (aio_req grp, int errorno = errno)
		1073	CODE:
		1074	grp->errorno = errorno;
		1075
		1076	void
1400	feed_limit (aio_req grp, int limit)	1077	limit (aio_req grp, int limit)
1401	CODE:	1078	CODE:
1402	grp->fd2 = limit;	1079	eio_grp_limit (grp, limit);
1403	aio_grp_feed (grp);
1404		1080
1405	void	1081	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1082	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1083	CODE:
1408	{	1084	{
1409	SvREFCNT_dec (grp->fh2);	1085	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1086	grp->sv2 = newSVsv (callback);
1411		1087
1412	if (grp->fd2 <= 0)	1088	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1089	grp->int2 = 2;
1414		1090
1415	aio_grp_feed (grp);	1091	eio_grp_limit (grp, grp->int2);
1416	}	1092	}
1417		1093

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