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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.54 by root, Mon Oct 23 00:34:36 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/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
23		17
24	#if HAVE_SENDFILE	18	#ifdef _WIN32
25	# if __linux	19
26	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
27	# elif __freebsd	21	# undef malloc
28	# include <sys/socket.h>	22	# undef free
29	# include <sys/uio.h>	23
30	# elif __hpux	24	// perl overrides all those nice win32 functions
31	# include <sys/socket.h>	25	# undef open
32	# elif __solaris /* not yet */	26	# undef read
33	# 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
34	# else	56	#else
35	# error sendfile support requested but not available	57
36	# 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
37	#endif	65	#endif
38		66
39	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
40	#ifndef NAME_MAX	68
41	# 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
42	#endif	74	#endif
43		75
44	#if __ia64	76	static HV *stash;
45	# define STACKSIZE 65536	77	typedef SV SV8; /* byte-sv, used for argument-checking */
46	#else
47	# define STACKSIZE 8192
48	#endif
49
50	enum {
51	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};
63		78
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		81
67	typedef struct aio_cb	82	#define EIO_COMMON \
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;	83	SV *callback; \
76	SV *fh, *fh2;	84	SV *sv1, *sv2; \
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;	85	STRLEN stroffset; \
87	mode_t mode; /* open */	86	SV *self
88	unsigned char cancelled;
89	} aio_cb;
90		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)
		96
		97	enum {
		98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		99	};
		100
		101	#include "libeio/eio.c"
		102
91	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
93		105
94	static int started, wanted;	106	static unsigned int max_outstanding = 0x7fffffff;
95	static volatile int nreqs;
96	static int max_outstanding = 1<<30;
97	static int respipe [2];
98		107
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		109
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
104	static volatile aio_req ress, rese; /* queue start, queue end */
105		111
		112	static void req_destroy (aio_req req);
106	static void req_invoke (aio_req req);	113	static void req_cancel (aio_req req);
107	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	}
108		128
109	/* must be called at most once */	129	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
111	{	131	{
112	if (!req->self)	132	if (!req->self)
…		…
130	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	151	}
132		152
133	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
134	{	154	{
135	while (grp->length < grp->fd2)	155	if (grp->sv2 && SvOK (grp->sv2))
136	{	156	{
137	int old_len = grp->length;	157	dSP;
138		158
139	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)
140	{	186	{
141	dSP;	187	case EIO_READDIR:
		188	{
		189	SV *rv = &PL_sv_undef;
142		190
143	ENTER;	191	if (req->result >= 0)
144	SAVETMPS;	192	{
145	PUSHMARK (SP);	193	int i;
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	194	char *buf = req->ptr2;
147	PUTBACK;	195	AV *av = newAV ();
148	call_sv (grp->fh2, G_VOID | G_EVAL);	196
149	SPAGAIN;	197	av_extend (av, req->result - 1);
150	FREETMPS;	198
151	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;
152	}	295	}
153		296
154	/* stop if no progress has been made */	297	errno = req->errorno;
155	if (old_len == grp->length)	298
156	{	299	PUTBACK;
157	SvREFCNT_dec (grp->fh2);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
158	grp->fh2 = 0;	301	SPAGAIN;
159	break;	302
160	}	303	FREETMPS;
		304	LEAVE;
		305
		306	PUTBACK;
161	}	307	}
162	}
163		308
164	static void aio_grp_dec (aio_req grp)	309	return !!SvTRUE (ERRSV);
165	{
166	--grp->length;
167
168	/* call feeder, if applicable */
169	aio_grp_feed (grp);
170
171	/* finish, if done */
172	if (!grp->length && grp->fd)
173	{
174	req_invoke (grp);
175	req_free (grp);
176	}
177	}	310	}
178		311
179	static void poll_wait ()
180	{
181	if (nreqs && !ress)
182	{
183	fd_set rfd;
184	FD_ZERO(&rfd);
185	FD_SET(respipe [0], &rfd);
186
187	select (respipe [0] + 1, &rfd, 0, 0, 0);
188	}
189	}
190
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_NOP:
265	case REQ_SLEEP:
266	break;
267
268	default:
269	PUSHs (sv_2mortal (newSViv (req->result)));
270	break;
271	}
272
273
274	PUTBACK;
275	call_sv (req->callback, G_VOID | G_EVAL);
276	SPAGAIN;
277
278	FREETMPS;
279	LEAVE;
280
281	errno = errorno;
282
283	if (SvTRUE (ERRSV))
284	{
285	req_free (req);
286	croak (0);
287	}
288	}
289
290	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
291	{	313	{
292	if (req->grp)
293	{
294	aio_req grp = req->grp;
295
296	/* unlink request */
297	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
298	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
299
300	if (grp->grp_first == req)
301	grp->grp_first = req->grp_next;
302
303	aio_grp_dec (grp);
304	}
305
306	if (req->self)	314	if (req->self)
307	{	315	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
310	}	318	}
311		319
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	320	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	321	SvREFCNT_dec (req->sv2);
315	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320		323
321	Safefree (req);	324	Safefree (req);
322	}	325	}
323		326
324	static void req_cancel (aio_req req)	327	static void req_cancel_subs (aio_req grp)
325	{	328	{
326	req->cancelled = 1;	329	aio_req sub;
327		330
328	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)
329	{	362	{
330	aio_req sub;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		364	croak ("unable to initialize result pipe(2)");
331		365
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	366	respipe_close (respipe [0]);
333	req_cancel (sub);	367	respipe [0] = old_readfd;
334	}	368	}
335	}
336		369
337	static int poll_cb ()	370	#ifdef _WIN32
338	{	371	int arg = 1;
339	dSP;	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
340	int count = 0;	373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
341	int do_croak = 0;	374	#else
342	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)");
343		379
344	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 ())
345	{	389	{
346	pthread_mutex_lock (&reslock);	390	int size;
347	req = ress;
348		391
		392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
349	if (req)	396	if (size)
350	{
351	ress = req->next;
352
353	if (!ress)
354	{
355	/* read any signals sent by the worker threads */
356	char buf [32];
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}
362	}
363
364	pthread_mutex_unlock (&reslock);
365
366	if (!req)
367	break;	397	return;
368		398
369	--nreqs;	399	maybe_start_thread ();
370		400
371	if (req->type == REQ_QUIT)	401	FD_ZERO (&rfd);
372	started--;	402	FD_SET (respipe [0], &rfd);
373	else if (req->type == REQ_GROUP && req->length)
374	{
375	req->fd = 1; /* mark request as delayed */
376	continue;
377	}
378	else
379	{
380	if (req->type == REQ_READ)
381	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382		403
383	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
384	SvREADONLY_off (req->data);
385
386	if (req->statdata)
387	{
388	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389	PL_laststatval = req->result;
390	PL_statcache = *(req->statdata);
391	}
392
393	req_invoke (req);
394
395	count++;
396	}
397
398	req_free (req);
399	}	405	}
400
401	return count;
402	}	406	}
403		407
404	static void *aio_proc(void *arg);	408	static int poll_cb (void)
405
406	static void start_thread (void)
407	{	409	{
408	sigset_t fullsigset, oldsigset;	410	int res = eio_poll ();
409	pthread_t tid;
410	pthread_attr_t attr;
411		411
412	pthread_attr_init (&attr);	412	if (res > 0)
413	pthread_attr_setstacksize (&attr, STACKSIZE);	413	croak (0);
414	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415
416	sigfillset (&fullsigset);
417	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418
419	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
420	started++;
421
422	sigprocmask (SIG_SETMASK, &oldsigset, 0);
423	}
424
425	static void req_send (aio_req req)
426	{
427	while (started < wanted && nreqs >= started)
428	start_thread ();
429
430	++nreqs;
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{
438	reqe->next = req;
439	reqe = req;
440	}
441	else
442	reqe = reqs = req;
443
444	pthread_cond_signal (&reqwait);
445	pthread_mutex_unlock (&reqlock);
446
447	if (nreqs > max_outstanding)
448	for (;;)
449	{
450	poll_cb ();
451
452	if (nreqs <= max_outstanding)
453	break;
454
455	poll_wait ();
456	}
457	}
458
459	static void end_thread (void)
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464
465	req_send (req);
466	}
467
468	static void min_parallel (int nthreads)
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473
474	static void max_parallel (int nthreads)
475	{
476	int cur = started;
477
478	if (wanted > nthreads)
479	wanted = nthreads;
480
481	while (cur > wanted)
482	{
483	end_thread ();
484	cur--;
485	}
486
487	while (started > wanted)
488	{
489	poll_wait ();
490	poll_cb ();
491	}
492	}
493
494	static void create_pipe ()
495	{
496	if (pipe (respipe))
497	croak ("unable to initialize result pipe");
498
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
500	croak ("cannot set result pipe to nonblocking mode");
501
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
503	croak ("cannot set result pipe to nonblocking mode");
504	}
505
506	/*****************************************************************************/
507	/* work around various missing functions */
508
509	#if !HAVE_PREADWRITE
510	# define pread aio_pread
511	# define pwrite aio_pwrite
512
513	/*
514	* make our pread/pwrite safe against themselves, but not against
515	* normal read/write by using a mutex. slows down execution a lot,
516	* but that's your problem, not mine.
517	*/
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
519
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
521	{
522	ssize_t res;
523	off_t ooffset;
524
525	pthread_mutex_lock (&preadwritelock);
526	ooffset = lseek (fd, 0, SEEK_CUR);
527	lseek (fd, offset, SEEK_SET);
528	res = read (fd, buf, count);
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531		414
532	return res;	415	return res;
533	}
534
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
536	{
537	ssize_t res;
538	off_t ooffset;
539
540	pthread_mutex_lock (&preadwritelock);
541	ooffset = lseek (fd, 0, SEEK_CUR);
542	lseek (fd, offset, SEEK_SET);
543	res = write (fd, buf, count);
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546
547	return res;
548	}
549	#endif
550
551	#if !HAVE_FDATASYNC
552	# define fdatasync fsync
553	#endif
554
555	#if !HAVE_READAHEAD
556	# define readahead aio_readahead
557
558	static ssize_t readahead (int fd, off_t offset, size_t count)
559	{
560	char readahead_buf[4096];
561
562	while (count > 0)
563	{
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565
566	pread (fd, readahead_buf, len, offset);
567	offset += len;
568	count -= len;
569	}
570
571	errno = 0;
572	}
573	#endif
574
575	#if !HAVE_READDIR_R
576	# define readdir_r aio_readdir_r
577
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
579
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581	{
582	struct dirent *e;
583	int errorno;
584
585	pthread_mutex_lock (&readdirlock);
586
587	e = readdir (dirp);
588	errorno = errno;
589
590	if (e)
591	{
592	*res = ent;
593	strcpy (ent->d_name, e->d_name);
594	}
595	else
596	*res = 0;
597
598	pthread_mutex_unlock (&readdirlock);
599
600	errno = errorno;
601	return e ? 0 : -1;
602	}
603	#endif
604
605	/* sendfile always needs emulation */
606	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
607	{
608	ssize_t res;
609
610	if (!count)
611	return 0;
612
613	#if HAVE_SENDFILE
614	# if __linux
615	res = sendfile (ofd, ifd, &offset, count);
616
617	# elif __freebsd
618	/*
619	* Of course, the freebsd sendfile is a dire hack with no thoughts
620	* wasted on making it similar to other I/O functions.
621	*/
622	{
623	off_t sbytes;
624	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625
626	if (res < 0 && sbytes)
627	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
628	res = sbytes;
629	}
630
631	# elif __hpux
632	res = sendfile (ofd, ifd, offset, count, 0, 0);
633
634	# elif __solaris
635	{
636	struct sendfilevec vec;
637	size_t sbytes;
638
639	vec.sfv_fd = ifd;
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643
644	res = sendfilev (ofd, &vec, 1, &sbytes);
645
646	if (res < 0 && sbytes)
647	res = sbytes;
648	}
649
650	# endif
651	#else
652	res = -1;
653	errno = ENOSYS;
654	#endif
655
656	if (res < 0
657	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
658	#if __solaris
659	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
660	#endif
661	)
662	)
663	{
664	/* emulate sendfile. this is a major pain in the ass */
665	char buf[4096];
666	res = 0;
667
668	while (count)
669	{
670	ssize_t cnt;
671
672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673
674	if (cnt <= 0)
675	{
676	if (cnt && !res) res = -1;
677	break;
678	}
679
680	cnt = write (ofd, buf, cnt);
681
682	if (cnt <= 0)
683	{
684	if (cnt && !res) res = -1;
685	break;
686	}
687
688	offset += cnt;
689	res += cnt;
690	count -= cnt;
691	}
692	}
693
694	return res;
695	}
696
697	/* read a full directory */
698	static int scandir_ (const char *path, void **namesp)
699	{
700	DIR *dirp = opendir (path);
701	union
702	{
703	struct dirent d;
704	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705	} u;
706	struct dirent *entp;
707	char *name, *names;
708	int memlen = 4096;
709	int memofs = 0;
710	int res = 0;
711	int errorno;
712
713	if (!dirp)
714	return -1;
715
716	names = malloc (memlen);
717
718	for (;;)
719	{
720	errno = 0, readdir_r (dirp, &u.d, &entp);
721
722	if (!entp)
723	break;
724
725	name = entp->d_name;
726
727	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728	{
729	int len = strlen (name) + 1;
730
731	res++;
732
733	while (memofs + len > memlen)
734	{
735	memlen *= 2;
736	names = realloc (names, memlen);
737	if (!names)
738	break;
739	}
740
741	memcpy (names + memofs, name, len);
742	memofs += len;
743	}
744	}
745
746	errorno = errno;
747	closedir (dirp);
748
749	if (errorno)
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755
756	*namesp = (void *)names;
757	return res;
758	}
759
760	/*****************************************************************************/
761
762	static void *aio_proc (void *thr_arg)
763	{
764	aio_req req;
765	int type;
766
767	do
768	{
769	pthread_mutex_lock (&reqlock);
770
771	for (;;)
772	{
773	req = reqs;
774
775	if (reqs)
776	{
777	reqs = reqs->next;
778	if (!reqs) reqe = 0;
779	}
780
781	if (req)
782	break;
783
784	pthread_cond_wait (&reqwait, &reqlock);
785	}
786
787	pthread_mutex_unlock (&reqlock);
788
789	errno = 0; /* strictly unnecessary */
790
791	if (!req->cancelled)
792	switch (type = req->type) /* remember type for QUIT check */
793	{
794	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
795	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
796
797	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
798	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
799
800	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803
804	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
805	case REQ_CLOSE: req->result = close (req->fd); break;
806	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
807	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
808	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
809	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811
812	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813	case REQ_FSYNC: req->result = fsync (req->fd); break;
814	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
815
816	case REQ_SLEEP:
817	{
818	struct timeval tv;
819
820	tv.tv_sec = req->fd;
821	tv.tv_usec = req->fd2;
822
823	req->result = select (0, 0, 0, 0, &tv);
824	}
825
826	case REQ_GROUP: /*TODO: should not be handled here */
827	case REQ_NOP: /*TODO: should not be handled here */
828	case REQ_QUIT:
829	break;
830
831	default:
832	req->result = ENOSYS;
833	break;
834	}
835
836	req->errorno = errno;
837
838	pthread_mutex_lock (&reslock);
839
840	req->next = 0;
841
842	if (rese)
843	{
844	rese->next = req;
845	rese = req;
846	}
847	else
848	{
849	rese = ress = req;
850
851	/* write a dummy byte to the pipe so fh becomes ready */
852	write (respipe [1], &respipe, 1);
853	}
854
855	pthread_mutex_unlock (&reslock);
856	}
857	while (type != REQ_QUIT);
858
859	return 0;
860	}
861
862	/*****************************************************************************/
863
864	static void atfork_prepare (void)
865	{
866	pthread_mutex_lock (&reqlock);
867	pthread_mutex_lock (&reslock);
868	#if !HAVE_PREADWRITE
869	pthread_mutex_lock (&preadwritelock);
870	#endif
871	#if !HAVE_READDIR_R
872	pthread_mutex_lock (&readdirlock);
873	#endif
874	}
875
876	static void atfork_parent (void)
877	{
878	#if !HAVE_READDIR_R
879	pthread_mutex_unlock (&readdirlock);
880	#endif
881	#if !HAVE_PREADWRITE
882	pthread_mutex_unlock (&preadwritelock);
883	#endif
884	pthread_mutex_unlock (&reslock);
885	pthread_mutex_unlock (&reqlock);
886	}
887
888	static void atfork_child (void)
889	{
890	aio_req prv;
891
892	started = 0;
893
894	while (reqs)
895	{
896	prv = reqs;
897	reqs = prv->next;
898	req_free (prv);
899	}
900
901	reqs = reqe = 0;
902
903	while (ress)
904	{
905	prv = ress;
906	ress = prv->next;
907	req_free (prv);
908	}
909
910	ress = rese = 0;
911
912	close (respipe [0]);
913	close (respipe [1]);
914	create_pipe ();
915
916	atfork_parent ();
917	}	416	}
918		417
919	#define dREQ \	418	#define dREQ \
920	aio_req req; \	419	aio_req req; \
		420	int req_pri = next_pri; \
		421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
921	\	422	\
922	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
923	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
924	\	425	\
925	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
926	if (!req) \	427	if (!req) \
927	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
928	\	429	\
929	req->callback = newSVsv (callback)	430	req->callback = newSVsv (callback); \
		431	req->pri = req_pri
930		432
931	#define REQ_SEND \	433	#define REQ_SEND \
932	req_send (req); \	434	eio_submit (req); \
933	\	435	\
934	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
936		438
937	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
938		440
939	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
940		442
941	BOOT:	443	BOOT:
942	{	444	{
943	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
		446
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
946	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);
947		459
948	create_pipe ();	460	X_COND_CHECK (reqwait);
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	461	#else
950	}	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
951		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
952	void	471	void
953	min_parallel (nthreads)	472	max_poll_reqs (int nreqs)
954	int nthreads
955	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
956		476
957	void	477	void
958	max_parallel (nthreads)	478	max_poll_time (double nseconds)
959	int nthreads
960	PROTOTYPE: $	479	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	480	CODE:
967	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:
968	max_outstanding = nreqs;	505	max_outstanding = maxreqs;
969		506
970	void	507	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
972	SV * pathname
973	int flags
974	int mode
975	SV * callback
976	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
977	PPCODE:	510	PPCODE:
978	{	511	{
979	dREQ;	512	dREQ;
980		513
981	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
982	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
983	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
984	req->fd = flags;	517	req->int1 = flags;
985	req->mode = mode;	518	req->int2 = mode;
986		519
987	REQ_SEND;	520	REQ_SEND;
988	}	521	}
989		522
990	void	523	void
991	aio_close (fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$	525	PROTOTYPE: $;$
995	ALIAS:	526	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
998	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
999	PPCODE:	529	PPCODE:
1000	{	530	{
1001	dREQ;	531	dREQ;
1002		532
1003	req->type = ix;	533	req->type = ix;
1004	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1006		536
1007	REQ_SEND (req);	537	REQ_SEND (req);
1008	}	538	}
1009		539
1010	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
1011	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)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:	570	ALIAS:
1019	aio_read = REQ_READ	571	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1022	PPCODE:	574	PPCODE:
1023	{	575	{
1024	aio_req req;
1025	STRLEN svlen;	576	STRLEN svlen;
1026	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
1027		579
1028	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);	581	SvPOK_on (data);
1030		582
1031	if (dataoffset < 0)	583	if (dataoffset < 0)
1032	dataoffset += svlen;	584	dataoffset += svlen;
1033		585
1034	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
1036		588
1037	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1038	{	590	{
1039	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	593	len = svlen - dataoffset;
1042	}	594	}
1043	else	595	else
1044	{	596	{
1045	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
1046	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	599	}
1048		600
1049	if (length < 0)	601	if (len < 0)
1050	croak ("length must not be negative");	602	croak ("length must not be negative");
1051		603
1052	{	604	{
1053	dREQ;	605	dREQ;
1054		606
1055	req->type = ix;	607	req->type = ix;
1056	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1058	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	612	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
1063		616
1064	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1065	{	618	{
1066	SvREADONLY_on (data);	619	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
1068	}	621	}
1069		622
1070	REQ_SEND;	623	REQ_SEND;
1071	}	624	}
1072	}	625	}
1073		626
1074	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
1075	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)
1076	SV * out_fh
1077	SV * in_fh
1078	UV in_offset
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1082	PPCODE:	650	PPCODE:
1083	{	651	{
1084	dREQ;	652	dREQ;
1085		653
1086	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1089	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1091	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
1092	req->length = length;	660	req->size = length;
1093		661
1094	REQ_SEND;	662	REQ_SEND;
1095	}	663	}
1096		664
1097	void	665	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1104	PPCODE:	668	PPCODE:
1105	{	669	{
1106	dREQ;	670	dREQ;
1107		671
1108	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1111	req->offset = offset;	675	req->offs = SvVAL64 (offset);
1112	req->length = length;	676	req->size = length;
1113		677
1114	REQ_SEND;	678	REQ_SEND;
1115	}	679	}
1116		680
1117	void	681	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	683	ALIAS:
1122	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1124	PPCODE:	686	PPCODE:
1125	{	687	{
1126	dREQ;	688	dREQ;
1127		689
1128	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1129	if (!req->statdata)	691	if (!req->ptr2)
1130	{	692	{
1131	req_free (req);	693	req_destroy (req);
1132	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1133	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
1134		699
1135	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1136	{	701	{
1137	req->type = ix;	702	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140	}	704	}
1141	else	705	else
1142	{	706	{
1143	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1144	req->fh = newSVsv (fh_or_path);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}	709	}
1147		710
1148	REQ_SEND;	711	REQ_SEND;
1149	}	712	}
1150		713
1151	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
1152	aio_unlink (pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	809	ALIAS:
1156	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1159	PPCODE:	813	PPCODE:
1160	{	814	{
1161	dREQ;	815	dREQ;
1162		816
1163	req->type = ix;	817	req->type = ix;
1164	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1165	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);
1166		839
1167	REQ_SEND;	840	REQ_SEND;
1168	}	841	}
1169		842
1170	void	843	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:
1176	aio_link = REQ_LINK
1177	aio_symlink = REQ_SYMLINK
1178	aio_rename = REQ_RENAME
1179	PPCODE:	845	PPCODE:
1180	{	846	{
1181	dREQ;	847	dREQ;
1182		848
1183	req->type = ix;	849	req->type = EIO_MKNOD;
1184	req->fh = newSVsv (oldpath);	850	req->sv1 = newSVsv (pathname);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1186	req->data = newSVsv (newpath);	852	req->int2 = (mode_t)mode;
1187	req->dataptr = SvPVbyte_nolen (req->data);	853	req->offs = dev;
1188		854
1189	REQ_SEND;	855	REQ_SEND;
1190	}	856	}
1191		857
1192	void	858	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	860	PPCODE:
1197	{	861	{
1198	dREQ;	862	dREQ;
1199		863
1200	req->type = REQ_SLEEP;	864	req->type = EIO_BUSY;
1201	req->fd = delay < 0. ? 0 : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1203		866
1204	REQ_SEND;	867	REQ_SEND;
1205	}	868	}
1206		869
1207	void	870	void
1208	aio_group (callback=&PL_sv_undef)	871	aio_group (SV *callback=&PL_sv_undef)
1209	SV * callback
1210	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1211	PPCODE:	873	PPCODE:
1212	{	874	{
1213	dREQ;	875	dREQ;
		876
1214	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
		878
1215	req_send (req);	879	eio_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1217	}	881	}
1218		882
1219	void	883	void
1220	aio_nop (callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1222	PPCODE:	888	PPCODE:
1223	{	889	{
1224	dREQ;	890	dREQ;
1225		891
1226	req->type = REQ_NOP;	892	req->type = ix;
1227		893
1228	REQ_SEND;	894	REQ_SEND;
1229	}	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;
1230		918
1231	void	919	void
1232	flush ()	920	flush ()
1233	PROTOTYPE:	921	PROTOTYPE:
1234	CODE:	922	CODE:
…		…
1236	{	924	{
1237	poll_wait ();	925	poll_wait ();
1238	poll_cb ();	926	poll_cb ();
1239	}	927	}
1240		928
1241	void	929	int
1242	poll()	930	poll()
1243	PROTOTYPE:	931	PROTOTYPE:
1244	CODE:	932	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	933	poll_wait ();
1248	poll_cb ();	934	RETVAL = poll_cb ();
1249	}	935	OUTPUT:
		936	RETVAL
1250		937
1251	int	938	int
1252	poll_fileno()	939	poll_fileno()
1253	PROTOTYPE:	940	PROTOTYPE:
1254	CODE:	941	CODE:
…		…
1266		953
1267	void	954	void
1268	poll_wait()	955	poll_wait()
1269	PROTOTYPE:	956	PROTOTYPE:
1270	CODE:	957	CODE:
1271	if (nreqs)
1272	poll_wait ();	958	poll_wait ();
1273		959
1274	int	960	int
1275	nreqs()	961	nreqs()
1276	PROTOTYPE:	962	PROTOTYPE:
1277	CODE:	963	CODE:
1278	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1279	OUTPUT:	965	OUTPUT:
1280	RETVAL	966	RETVAL
1281		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
1282	PROTOTYPES: DISABLE	994	PROTOTYPES: DISABLE
1283		995
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		997
1286	void	998	void
1287	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1000	CODE:
1290	req_cancel (req);	1001	eio_cancel (req);
		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);
1291		1008
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1009	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1010
1294	void	1011	void
1295	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1296	PPCODE:	1013	PPCODE:
1297	{	1014	{
1298	int i;	1015	int i;
1299	aio_req req;
1300		1016
1301	if (grp->fd == 2)	1017	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1019
1304	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
1305	{	1021	{
		1022	aio_req req;
		1023
1306	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1026
1309	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
1310		1028
1311	if (req)	1029	if (req)
1312	{	1030	eio_grp_add (grp, req);
1313	++grp->length;
1314	req->grp = grp;
1315
1316	req->grp_prev = 0;
1317	req->grp_next = grp->grp_first;
1318
1319	if (grp->grp_first)
1320	grp->grp_first->grp_prev = req;
1321
1322	grp->grp_first = req;
1323	}	1031	}
1324	}
1325	}	1032	}
		1033
		1034	void
		1035	cancel_subs (aio_req_ornot req)
		1036	CODE:
		1037	req_cancel_subs (req);
1326		1038
1327	void	1039	void
1328	result (aio_req grp, ...)	1040	result (aio_req grp, ...)
1329	CODE:	1041	CODE:
1330	{	1042	{
1331	int i;	1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
1332	AV *av = newAV ();	1048	av = newAV ();
1333		1049
1334	for (i = 1; i < items; ++i )	1050	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1051	av_push (av, newSVsv (ST (i)));
1336		1052
1337	SvREFCNT_dec (grp->data);	1053	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1054	grp->sv1 = (SV *)av;
1339	}	1055	}
1340		1056
1341	void	1057	void
1342	lock (aio_req grp)	1058	errno (aio_req grp, int errorno = errno)
1343	CODE:	1059	CODE:
1344	++grp->length;	1060	grp->errorno = errorno;
1345		1061
1346	void	1062	void
1347	unlock (aio_req grp)
1348	CODE:
1349	aio_grp_dec (grp);
1350
1351	void
1352	feeder_limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
1353	CODE:	1064	CODE:
1354	grp->fd2 = limit;	1065	eio_grp_limit (grp, limit);
1355	aio_grp_feed (grp);
1356		1066
1357	void	1067	void
1358	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1359	CODE:	1069	CODE:
1360	{	1070	{
1361	SvREFCNT_dec (grp->fh2);	1071	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
1363		1073
1364	if (grp->fd2 <= 0)	1074	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1075	grp->int2 = 2;
1366		1076
1367	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
1368	}	1078	}
1369		1079

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