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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 1.119 by root, Sun May 11 19:11:05 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	/* perl namespace pollution */
30	# if __linux	19	#undef VERSION
31	# include <sys/sendfile.h>	20
32	# elif __freebsd	21	#ifdef _WIN32
33	# include <sys/socket.h>	22
34	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __hpux	24	# undef malloc
36	# include <sys/socket.h>	25	# undef free
37	# elif __solaris /* not yet */	26
38	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
39	# else	59	#else
40	# error sendfile support requested but not available	60
41	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
42	#endif	68	#endif
43		69
44	/* used for struct dirent, AIX doesn't provide it */	70	#define EIO_STRUCT_STAT Stat_t
45	#ifndef NAME_MAX	71
46	# define NAME_MAX 4096	72	/* use NV for 32 bit perls as it allows larger offsets */
		73	#if IVSIZE >= 8
		74	# define SvVAL64 SvIV
		75	#else
		76	# define SvVAL64 SvNV
47	#endif	77	#endif
48		78
49	#if __ia64	79	static HV *stash;
50	# define STACKSIZE 65536	80	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		81
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		84
72	typedef struct aio_cb	85	#define EIO_COMMON \
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;	86	SV *callback; \
77	SV *fh, *fh2;	87	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;	88	STRLEN stroffset; \
85	int type;	89	SV *self
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89		90
90	unsigned char flags;	91	#include "libeio/eio.h"
91	unsigned char pri;
92		92
93	SV *self; /* the perl counterpart of this request, if any */	93	static int req_invoke (eio_req *req);
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94	#define EIO_FINISH(req) req_invoke (req)
95	} aio_cb;	95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
96		99
97	enum {	100	enum {
98	FLAG_CANCELLED = 0x01,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	102	};
100		103
		104	#include "libeio/eio.c"
		105
101	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
103		108
104	enum {	109	static SV *on_next_submit;
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;	110	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	111	static int max_outstanding;
117	static int respipe [2];
118		112
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		114
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	115	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	116	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
134		131
135	/* must be called at most once */	132	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
137	{	134	{
138	if (!req->self)	135	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	154	}
158		155
159	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
160	{	157	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	158	if (grp->sv2 && SvOK (grp->sv2))
162	{	159	{
163	int old_len = grp->length;	160	dSP;
164		161
165	if (grp->fh2 && SvOK (grp->fh2))	162	ENTER;
		163	SAVETMPS;
		164	PUSHMARK (SP);
		165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		166	PUTBACK;
		167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		168	SPAGAIN;
		169	FREETMPS;
		170	LEAVE;
		171	}
		172	}
		173
		174	static void req_submit (eio_req *req)
		175	{
		176	eio_submit (req);
		177
		178	if (on_next_submit)
		179	{
		180	dSP;
		181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
		188	}
		189	}
		190
		191	static int req_invoke (eio_req *req)
		192	{
		193	dSP;
		194
		195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
		197
		198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		199	{
		200	ENTER;
		201	SAVETMPS;
		202	PUSHMARK (SP);
		203	EXTEND (SP, 1);
		204
		205	switch (req->type)
166	{	206	{
167	dSP;	207	case EIO_READDIR:
		208	{
		209	SV *rv = &PL_sv_undef;
168		210
169	ENTER;	211	if (req->result >= 0)
170	SAVETMPS;	212	{
171	PUSHMARK (SP);	213	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	char *buf = req->ptr2;
173	PUTBACK;	215	AV *av = newAV ();
174	call_sv (grp->fh2, G_VOID | G_EVAL);	216
175	SPAGAIN;	217	av_extend (av, req->result - 1);
176	FREETMPS;	218
177	LEAVE;	219	for (i = 0; i < req->result; ++i)
		220	{
		221	SV *sv = newSVpv (buf, 0);
		222
		223	av_store (av, i, sv);
		224	buf += SvCUR (sv) + 1;
		225	}
		226
		227	rv = sv_2mortal (newRV_noinc ((SV *)av));
		228	}
		229
		230	PUSHs (rv);
		231	}
		232	break;
		233
		234	case EIO_OPEN:
		235	{
		236	/* convert fd to fh */
		237	SV *fh = &PL_sv_undef;
		238
		239	if (req->result >= 0)
		240	{
		241	GV *gv = (GV *)sv_newmortal ();
		242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
		248
		249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
		261	PUSHs (fh);
		262	}
		263	break;
		264
		265	case EIO_GROUP:
		266	req->int1 = 2; /* mark group as finished */
		267
		268	if (req->sv1)
		269	{
		270	int i;
		271	AV *av = (AV *)req->sv1;
		272
		273	EXTEND (SP, AvFILL (av) + 1);
		274	for (i = 0; i <= AvFILL (av); ++i)
		275	PUSHs (*av_fetch (av, i, 0));
		276	}
		277	break;
		278
		279	case EIO_NOP:
		280	case EIO_BUSY:
		281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		286	break;
		287
		288	case EIO_STAT:
		289	case EIO_LSTAT:
		290	case EIO_FSTAT:
		291	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		292	PL_laststatval = req->result;
		293	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		294	PUSHs (sv_2mortal (newSViv (req->result)));
		295	break;
		296
		297	case EIO_READ:
		298	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		299	*SvEND (req->sv2) = 0;
		300	PUSHs (sv_2mortal (newSViv (req->result)));
		301	break;
		302
		303	case EIO_DUP2:
		304	if (req->result > 0)
		305	req->result = 0;
		306	/* FALLTHROUGH */
		307
		308	default:
		309	PUSHs (sv_2mortal (newSViv (req->result)));
		310	break;
178	}	311	}
179		312
180	/* stop if no progress has been made */	313	errno = req->errorno;
181	if (old_len == grp->length)	314
182	{	315	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	317	SPAGAIN;
185	break;	318
186	}	319	FREETMPS;
		320	LEAVE;
		321
		322	PUTBACK;
187	}	323	}
188	}
189		324
190	static void aio_grp_dec (aio_req grp)	325	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	}	326	}
204		327
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)	328	static void req_destroy (aio_req req)
326	{	329	{
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)	330	if (req->self)
342	{	331	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	332	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	333	SvREFCNT_dec (req->self);
345	}	334	}
346		335
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	336	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	337	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	338	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352
353	if (req->type == REQ_READDIR && req->result >= 0)
354	free (req->data2ptr);
355		339
356	Safefree (req);	340	Safefree (req);
357	}	341	}
358		342
359	static void req_cancel (aio_req req)	343	static void req_cancel_subs (aio_req grp)
360	{	344	{
361	req->flags |= FLAG_CANCELLED;	345	aio_req sub;
362		346
363	if (req->type == REQ_GROUP)	347	if (grp->type != EIO_GROUP)
		348	return;
		349
		350	SvREFCNT_dec (grp->sv2);
		351	grp->sv2 = 0;
		352
		353	eio_grp_cancel (grp);
		354	}
		355
		356	#ifdef USE_SOCKETS_AS_HANDLES
		357	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		358	#else
		359	# define TO_SOCKET(x) (x)
		360	#endif
		361
		362	static void
		363	create_respipe (void)
		364	{
		365	int old_readfd = respipe [0];
		366
		367	if (respipe [1] >= 0)
		368	respipe_close (TO_SOCKET (respipe [1]));
		369
		370	#ifdef _WIN32
		371	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		372	#else
		373	if (pipe (respipe))
		374	#endif
		375	croak ("unable to initialize result pipe");
		376
		377	if (old_readfd >= 0)
364	{	378	{
365	aio_req sub;	379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		380	croak ("unable to initialize result pipe(2)");
366		381
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	382	respipe_close (respipe [0]);
368	req_cancel (sub);	383	respipe [0] = old_readfd;
369	}	384	}
370	}
371		385
372	static int poll_cb ()	386	#ifdef _WIN32
373	{	387	int arg = 1;
374	dSP;	388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
375	int count = 0;	389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
376	int do_croak = 0;	390	#else
377	aio_req req;	391	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		392	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		393	#endif
		394	croak ("unable to initialize result pipe(3)");
378		395
379	for (;;)	396	respipe_osf [0] = TO_SOCKET (respipe [0]);
		397	respipe_osf [1] = TO_SOCKET (respipe [1]);
		398	}
		399
		400	static void poll_wait (void)
		401	{
		402	fd_set rfd;
		403
		404	while (eio_nreqs ())
380	{	405	{
381	pthread_mutex_lock (&reslock);	406	int size;
382	req = ress;
383		407
		408	X_LOCK (reslock);
		409	size = res_queue.size;
		410	X_UNLOCK (reslock);
		411
384	if (req)	412	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;	413	return;
403		414
404	--nreqs;	415	maybe_start_thread ();
405		416
406	if (req->type == REQ_QUIT)	417	FD_ZERO (&rfd);
407	started--;	418	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		419
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	420	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	}	421	}
435
436	return count;
437	}	422	}
438		423
439	static void *aio_proc(void *arg);	424	static int poll_cb (void)
440
441	static void start_thread (void)
442	{	425	{
443	sigset_t fullsigset, oldsigset;	426	int res;
444	pthread_t tid;
445	pthread_attr_t attr;
446		427
447	pthread_attr_init (&attr);	428	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	{	429	{
473	reqe->next = req;	430	res = eio_poll ();
474	reqe = req;	431
		432	if (res > 0)
		433	croak (0);
475	}	434	}
476	else	435	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		436
567	return res;	437	return res;
568	}	438	}
569		439
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)	440	static void atfork_child (void)
925	{	441	{
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 ();	442	create_respipe ();
951
952	atfork_parent ();
953	}	443	}
954		444
955	#define dREQ \	445	#define dREQ \
956	aio_req req; \	446	aio_req req; \
957	int req_pri = next_pri; \	447	int req_pri = next_pri; \
958	next_pri = DEFAULT_PRI + PRI_BIAS; \	448	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
959	\	449	\
960	if (SvOK (callback) && !SvROK (callback)) \	450	if (SvOK (callback) && !SvROK (callback)) \
961	croak ("callback must be undef or of reference type"); \	451	croak ("callback must be undef or of reference type"); \
962	\	452	\
963	Newz (0, req, 1, aio_cb); \	453	Newz (0, req, 1, eio_req); \
964	if (!req) \	454	if (!req) \
965	croak ("out of memory during aio_req allocation"); \	455	croak ("out of memory during eio_req allocation"); \
966	\	456	\
967	req->callback = newSVsv (callback); \	457	req->callback = newSVsv (callback); \
968	req->pri = req_pri	458	req->pri = req_pri
969		459
970	#define REQ_SEND \	460	#define REQ_SEND \
971	req_send (req); \	461	req_submit (req); \
972	\	462	\
973	if (GIMME_V != G_VOID) \	463	if (GIMME_V != G_VOID) \
974	XPUSHs (req_sv (req, AIO_REQ_KLASS));	464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
975		465
976	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
977		467
978	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
979		469
980	BOOT:	470	BOOT:
981	{	471	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	472	stash = gv_stashpv ("IO::AIO", 1);
		473
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		479	#ifdef _WIN32
		480	X_MUTEX_CHECK (wrklock);
		481	X_MUTEX_CHECK (reslock);
		482	X_MUTEX_CHECK (reqlock);
		483	X_MUTEX_CHECK (reqwait);
		484	X_MUTEX_CHECK (preadwritelock);
		485	X_MUTEX_CHECK (readdirlock);
986		486
987	create_pipe ();	487	X_COND_CHECK (reqwait);
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	488	#else
989	}	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		490	#endif
990		491
		492	create_respipe ();
		493
		494	if (eio_init (want_poll, done_poll) < 0)
		495	croak ("IO::AIO: unable to initialise eio library");
		496
		497	/* atfork child called in fifo order, so before eio's handler */
		498	X_THREAD_ATFORK (0, 0, atfork_child);
		499	}
		500
991	void	501	void
992	min_parallel (nthreads)	502	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	503	PROTOTYPE: $
		504	CODE:
		505	eio_set_max_poll_reqs (nreqs);
995		506
996	void	507	void
997	max_parallel (nthreads)	508	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	509	PROTOTYPE: $
1000
1001	int
1002	max_outstanding (nreqs)
1003	int nreqs
1004	PROTOTYPE: $
1005	CODE:	510	CODE:
1006	RETVAL = max_outstanding;	511	eio_set_max_poll_time (nseconds);
		512
		513	void
		514	min_parallel (int nthreads)
		515	PROTOTYPE: $
		516	CODE:
		517	eio_set_min_parallel (nthreads);
		518
		519	void
		520	max_parallel (int nthreads)
		521	PROTOTYPE: $
		522	CODE:
		523	eio_set_max_parallel (nthreads);
		524
		525	void
		526	max_idle (int nthreads)
		527	PROTOTYPE: $
		528	CODE:
		529	eio_set_max_idle (nthreads);
		530
		531	void
		532	max_outstanding (int maxreqs)
		533	PROTOTYPE: $
		534	CODE:
1007	max_outstanding = nreqs;	535	max_outstanding = maxreqs;
1008		536
1009	void	537	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	538	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: $$$;$	539	PROTOTYPE: $$$;$
1016	PPCODE:	540	PPCODE:
1017	{	541	{
1018	dREQ;	542	dREQ;
1019		543
1020	req->type = REQ_OPEN;	544	req->type = EIO_OPEN;
1021	req->data = newSVsv (pathname);	545	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	546	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	547	req->int1 = flags;
1024	req->mode = mode;	548	req->int2 = mode;
1025		549
1026	REQ_SEND;	550	REQ_SEND;
1027	}	551	}
1028		552
1029	void	553	void
1030	aio_close (fh,callback=&PL_sv_undef)	554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	555	PROTOTYPE: $;$
1034	ALIAS:	556	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	557	aio_fsync = EIO_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	558	aio_fdatasync = EIO_FDATASYNC
1038	PPCODE:	559	PPCODE:
1039	{	560	{
1040	dREQ;	561	dREQ;
1041		562
1042	req->type = ix;	563	req->type = ix;
1043	req->fh = newSVsv (fh);	564	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045		566
1046	REQ_SEND (req);	567	REQ_SEND (req);
1047	}	568	}
1048		569
1049	void	570	void
		571	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		572	PROTOTYPE: $;$
		573	PPCODE:
		574	{
		575	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		576	dREQ;
		577
		578	if (close_pipe < 0)
		579	{
		580	int pipefd [2];
		581
		582	if (pipe (pipefd) < 0
		583	|| close (pipefd [1]) < 0
		584	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		585	abort (); /*D*/
		586
		587	close_pipe = pipefd [0];
		588	}
		589
		590	req->type = EIO_DUP2;
		591	req->int1 = close_pipe;
		592	req->sv2 = newSVsv (fh);
		593	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		594
		595	REQ_SEND (req);
		596	}
		597
		598	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	599	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:	600	ALIAS:
1058	aio_read = REQ_READ	601	aio_read = EIO_READ
1059	aio_write = REQ_WRITE	602	aio_write = EIO_WRITE
1060	PROTOTYPE: $$$$$;$	603	PROTOTYPE: $$$$$;$
1061	PPCODE:	604	PPCODE:
1062	{	605	{
1063	aio_req req;
1064	STRLEN svlen;	606	STRLEN svlen;
1065	char *svptr = SvPVbyte (data, svlen);	607	char *svptr = SvPVbyte (data, svlen);
		608	UV len = SvUV (length);
1066		609
1067	SvUPGRADE (data, SVt_PV);	610	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);	611	SvPOK_on (data);
1069		612
1070	if (dataoffset < 0)	613	if (dataoffset < 0)
1071	dataoffset += svlen;	614	dataoffset += svlen;
1072		615
1073	if (dataoffset < 0 || dataoffset > svlen)	616	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	617	croak ("dataoffset outside of data scalar");
1075		618
1076	if (ix == REQ_WRITE)	619	if (ix == EIO_WRITE)
1077	{	620	{
1078	/* write: check length and adjust. */	621	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	622	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	623	len = svlen - dataoffset;
1081	}	624	}
1082	else	625	else
1083	{	626	{
1084	/* read: grow scalar as necessary */	627	/* read: grow scalar as necessary */
1085	svptr = SvGROW (data, length + dataoffset);	628	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	629	}
1087		630
1088	if (length < 0)	631	if (len < 0)
1089	croak ("length must not be negative");	632	croak ("length must not be negative");
1090		633
1091	{	634	{
1092	dREQ;	635	dREQ;
1093		636
1094	req->type = ix;	637	req->type = ix;
1095	req->fh = newSVsv (fh);	638	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1097	: IoOFP (sv_2io (fh)));	640	: IoOFP (sv_2io (fh)));
		641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	642	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	643	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	644	req->ptr2 = (char *)svptr + dataoffset;
		645	req->stroffset = dataoffset;
1102		646
1103	if (!SvREADONLY (data))	647	if (!SvREADONLY (data))
1104	{	648	{
1105	SvREADONLY_on (data);	649	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	650	req->flags |= FLAG_SV2_RO_OFF;
1107	}	651	}
1108		652
1109	REQ_SEND;	653	REQ_SEND;
1110	}	654	}
1111	}	655	}
1112		656
1113	void	657	void
		658	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		659	PROTOTYPE: $$;$
		660	PPCODE:
		661	{
		662	SV *data;
		663	dREQ;
		664
		665	req->type = EIO_READLINK;
		666	req->sv1 = newSVsv (path);
		667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		668
		669	REQ_SEND;
		670	}
		671
		672	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	673	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: $$$$;$	674	PROTOTYPE: $$$$;$
1121	PPCODE:	675	PPCODE:
1122	{	676	{
1123	dREQ;	677	dREQ;
1124		678
1125	req->type = REQ_SENDFILE;	679	req->type = EIO_SENDFILE;
1126	req->fh = newSVsv (out_fh);	680	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1128	req->fh2 = newSVsv (in_fh);	682	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1130	req->offset = in_offset;	684	req->offs = SvVAL64 (in_offset);
1131	req->length = length;	685	req->size = length;
1132		686
1133	REQ_SEND;	687	REQ_SEND;
1134	}	688	}
1135		689
1136	void	690	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	691	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	692	PROTOTYPE: $$$;$
1143	PPCODE:	693	PPCODE:
1144	{	694	{
1145	dREQ;	695	dREQ;
1146		696
1147	req->type = REQ_READAHEAD;	697	req->type = EIO_READAHEAD;
1148	req->fh = newSVsv (fh);	698	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1150	req->offset = offset;	700	req->offs = SvVAL64 (offset);
1151	req->length = length;	701	req->size = length;
1152		702
1153	REQ_SEND;	703	REQ_SEND;
1154	}	704	}
1155		705
1156	void	706	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	708	ALIAS:
1161	aio_stat = REQ_STAT	709	aio_stat = EIO_STAT
1162	aio_lstat = REQ_LSTAT	710	aio_lstat = EIO_LSTAT
1163	PPCODE:	711	PPCODE:
1164	{	712	{
1165	dREQ;	713	dREQ;
1166		714
1167	New (0, req->statdata, 1, Stat_t);	715	req->sv1 = newSVsv (fh_or_path);
1168	if (!req->statdata)
1169	{
1170	req_free (req);
1171	croak ("out of memory during aio_req->statdata allocation");
1172	}
1173		716
1174	if (SvPOK (fh_or_path))	717	if (SvPOK (req->sv1))
1175	{	718	{
1176	req->type = ix;	719	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	721	}
1180	else	722	else
1181	{	723	{
1182	req->type = REQ_FSTAT;	724	req->type = EIO_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	726	}
1186		727
1187	REQ_SEND;	728	REQ_SEND;
1188	}	729	}
1189		730
1190	void	731	void
		732	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		733	PPCODE:
		734	{
		735	dREQ;
		736
		737	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		738	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		739	req->sv1 = newSVsv (fh_or_path);
		740
		741	if (SvPOK (req->sv1))
		742	{
		743	req->type = EIO_UTIME;
		744	req->ptr1 = SvPVbyte_nolen (req->sv1);
		745	}
		746	else
		747	{
		748	req->type = EIO_FUTIME;
		749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		750	}
		751
		752	REQ_SEND;
		753	}
		754
		755	void
		756	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		757	PPCODE:
		758	{
		759	dREQ;
		760
		761	req->sv1 = newSVsv (fh_or_path);
		762	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		763
		764	if (SvPOK (req->sv1))
		765	{
		766	req->type = EIO_TRUNCATE;
		767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		768	}
		769	else
		770	{
		771	req->type = EIO_FTRUNCATE;
		772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		773	}
		774
		775	REQ_SEND;
		776	}
		777
		778	void
		779	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		780	ALIAS:
		781	aio_chmod = EIO_CHMOD
		782	aio_mkdir = EIO_MKDIR
		783	PPCODE:
		784	{
		785	dREQ;
		786
		787	req->int2 = mode;
		788	req->sv1 = newSVsv (fh_or_path);
		789
		790	if (SvPOK (req->sv1))
		791	{
		792	req->type = EIO_FCHMOD;
		793	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		794	}
		795	else
		796	{
		797	req->type = ix;
		798	req->ptr1 = SvPVbyte_nolen (req->sv1);
		799	}
		800
		801	REQ_SEND;
		802	}
		803
		804	void
		805	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		806	PPCODE:
		807	{
		808	dREQ;
		809
		810	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		811	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		812	req->sv1 = newSVsv (fh_or_path);
		813
		814	if (SvPOK (req->sv1))
		815	{
		816	req->type = EIO_CHOWN;
		817	req->ptr1 = SvPVbyte_nolen (req->sv1);
		818	}
		819	else
		820	{
		821	req->type = EIO_FCHOWN;
		822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		823	}
		824
		825	REQ_SEND;
		826	}
		827
		828	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	830	ALIAS:
1195	aio_unlink = REQ_UNLINK	831	aio_unlink = EIO_UNLINK
1196	aio_rmdir = REQ_RMDIR	832	aio_rmdir = EIO_RMDIR
1197	aio_readdir = REQ_READDIR	833	aio_readdir = EIO_READDIR
1198	PPCODE:	834	PPCODE:
1199	{	835	{
1200	dREQ;	836	dREQ;
1201		837
1202	req->type = ix;	838	req->type = ix;
1203	req->data = newSVsv (pathname);	839	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841
		842	REQ_SEND;
		843	}
		844
		845	void
		846	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_link = EIO_LINK
		849	aio_symlink = EIO_SYMLINK
		850	aio_rename = EIO_RENAME
		851	PPCODE:
		852	{
		853	dREQ;
		854
		855	req->type = ix;
		856	req->sv1 = newSVsv (oldpath);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858	req->sv2 = newSVsv (newpath);
		859	req->ptr2 = SvPVbyte_nolen (req->sv2);
1205		860
1206	REQ_SEND;	861	REQ_SEND;
1207	}	862	}
1208		863
1209	void	864	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	865	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:	866	PPCODE:
1219	{	867	{
1220	dREQ;	868	dREQ;
1221		869
1222	req->type = ix;	870	req->type = EIO_MKNOD;
1223	req->fh = newSVsv (oldpath);	871	req->sv1 = newSVsv (pathname);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
1225	req->data = newSVsv (newpath);	873	req->int2 = (mode_t)mode;
1226	req->dataptr = SvPVbyte_nolen (req->data);	874	req->offs = dev;
1227		875
1228	REQ_SEND;	876	REQ_SEND;
1229	}	877	}
1230		878
1231	void	879	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	880	aio_busy (double delay, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	881	PPCODE:
1236	{	882	{
1237	dREQ;	883	dREQ;
1238		884
1239	req->type = REQ_SLEEP;	885	req->type = EIO_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	886	req->nv1 = delay < 0. ? 0. : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1242		887
1243	REQ_SEND;	888	REQ_SEND;
1244	}	889	}
1245		890
1246	void	891	void
1247	aio_group (callback=&PL_sv_undef)	892	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	893	PROTOTYPE: ;$
1250	PPCODE:	894	PPCODE:
1251	{	895	{
1252	dREQ;	896	dREQ;
1253		897
1254	req->type = REQ_GROUP;	898	req->type = EIO_GROUP;
		899
1255	req_send (req);	900	eio_submit (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	902	}
1259		903
1260	void	904	void
1261	aio_nop (callback=&PL_sv_undef)	905	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback	906	ALIAS:
		907	aio_nop = EIO_NOP
		908	aio_sync = EIO_SYNC
1263	PPCODE:	909	PPCODE:
1264	{	910	{
1265	dREQ;	911	dREQ;
1266		912
1267	req->type = REQ_NOP;	913	req->type = ix;
1268		914
1269	REQ_SEND;	915	REQ_SEND;
1270	}	916	}
1271		917
1272	#if 0	918	int
1273		919	aioreq_pri (int pri = 0)
1274	void	920	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	921	CODE:
		922	RETVAL = next_pri - EIO_PRI_BIAS;
		923	if (items > 0)
		924	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	925	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	926	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	927	next_pri = pri + EIO_PRI_BIAS;
		928	}
		929	OUTPUT:
		930	RETVAL
1280		931
1281	#endif	932	void
		933	aioreq_nice (int nice = 0)
		934	CODE:
		935	nice = next_pri - nice;
		936	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		937	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		938	next_pri = nice + EIO_PRI_BIAS;
1282		939
1283	void	940	void
1284	flush ()	941	flush ()
1285	PROTOTYPE:	942	PROTOTYPE:
1286	CODE:	943	CODE:
1287	while (nreqs)	944	while (eio_nreqs ())
1288	{	945	{
1289	poll_wait ();	946	poll_wait ();
1290	poll_cb ();	947	poll_cb ();
1291	}	948	}
1292		949
1293	void	950	int
1294	poll()	951	poll()
1295	PROTOTYPE:	952	PROTOTYPE:
1296	CODE:	953	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	954	poll_wait ();
1300	poll_cb ();	955	RETVAL = poll_cb ();
1301	}	956	OUTPUT:
		957	RETVAL
1302		958
1303	int	959	int
1304	poll_fileno()	960	poll_fileno()
1305	PROTOTYPE:	961	PROTOTYPE:
1306	CODE:	962	CODE:
…		…
1318		974
1319	void	975	void
1320	poll_wait()	976	poll_wait()
1321	PROTOTYPE:	977	PROTOTYPE:
1322	CODE:	978	CODE:
1323	if (nreqs)
1324	poll_wait ();	979	poll_wait ();
1325		980
1326	int	981	int
1327	nreqs()	982	nreqs()
1328	PROTOTYPE:	983	PROTOTYPE:
1329	CODE:	984	CODE:
1330	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
1331	OUTPUT:	986	OUTPUT:
1332	RETVAL	987	RETVAL
1333		988
		989	int
		990	nready()
		991	PROTOTYPE:
		992	CODE:
		993	RETVAL = eio_nready ();
		994	OUTPUT:
		995	RETVAL
		996
		997	int
		998	npending()
		999	PROTOTYPE:
		1000	CODE:
		1001	RETVAL = eio_npending ();
		1002	OUTPUT:
		1003	RETVAL
		1004
		1005	int
		1006	nthreads()
		1007	PROTOTYPE:
		1008	CODE:
		1009	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1010	RETVAL = started;
		1011	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1012	OUTPUT:
		1013	RETVAL
		1014
		1015	void _on_next_submit (SV *cb)
		1016	CODE:
		1017	SvREFCNT_dec (on_next_submit);
		1018	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1019
1334	PROTOTYPES: DISABLE	1020	PROTOTYPES: DISABLE
1335		1021
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1023
1338	void	1024	void
1339	cancel (aio_req_ornot req)	1025	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1026	CODE:
1342	req_cancel (req);	1027	eio_cancel (req);
1343		1028
1344	void	1029	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1030	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1346	CODE:	1031	CODE:
1347	SvREFCNT_dec (req->callback);	1032	SvREFCNT_dec (req->callback);
…		…
1352	void	1037	void
1353	add (aio_req grp, ...)	1038	add (aio_req grp, ...)
1354	PPCODE:	1039	PPCODE:
1355	{	1040	{
1356	int i;	1041	int i;
1357	aio_req req;
1358		1042
1359	if (grp->fd == 2)	1043	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1044	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		1045
1362	for (i = 1; i < items; ++i )	1046	for (i = 1; i < items; ++i )
1363	{	1047	{
		1048	aio_req req;
		1049
1364	if (GIMME_V != G_VOID)	1050	if (GIMME_V != G_VOID)
1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1366		1052
1367	req = SvAIO_REQ (ST (i));	1053	req = SvAIO_REQ (ST (i));
1368		1054
1369	if (req)	1055	if (req)
1370	{	1056	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	}	1057	}
1382	}
1383	}	1058	}
		1059
		1060	void
		1061	cancel_subs (aio_req_ornot req)
		1062	CODE:
		1063	req_cancel_subs (req);
1384		1064
1385	void	1065	void
1386	result (aio_req grp, ...)	1066	result (aio_req grp, ...)
1387	CODE:	1067	CODE:
1388	{	1068	{
1389	int i;	1069	int i;
		1070	AV *av;
		1071
		1072	grp->errorno = errno;
		1073
1390	AV *av = newAV ();	1074	av = newAV ();
1391		1075
1392	for (i = 1; i < items; ++i )	1076	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1077	av_push (av, newSVsv (ST (i)));
1394		1078
1395	SvREFCNT_dec (grp->data);	1079	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1080	grp->sv1 = (SV *)av;
1397	}	1081	}
1398		1082
1399	void	1083	void
		1084	errno (aio_req grp, int errorno = errno)
		1085	CODE:
		1086	grp->errorno = errorno;
		1087
		1088	void
1400	feed_limit (aio_req grp, int limit)	1089	limit (aio_req grp, int limit)
1401	CODE:	1090	CODE:
1402	grp->fd2 = limit;	1091	eio_grp_limit (grp, limit);
1403	aio_grp_feed (grp);
1404		1092
1405	void	1093	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1095	CODE:
1408	{	1096	{
1409	SvREFCNT_dec (grp->fh2);	1097	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1098	grp->sv2 = newSVsv (callback);
1411		1099
1412	if (grp->fd2 <= 0)	1100	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1101	grp->int2 = 2;
1414		1102
1415	aio_grp_feed (grp);	1103	eio_grp_limit (grp, grp->int2);
1416	}	1104	}
1417		1105

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