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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.123 by root, Sat May 17 12:17:25 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_REQ_MEMBERS \
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	#define EIO_NO_WRAPPERS 1
91	unsigned char pri;
92		92
93	SV *self; /* the perl counterpart of this request, if any */	93	#include "libeio/eio.h"
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94
95	} aio_cb;	95	static int req_invoke (eio_req *req);
		96	#define EIO_FINISH(req) req_invoke (req)
		97	static void aio_grp_feed (eio_req *grp);
		98	#define EIO_FEED(req) aio_grp_feed (req)
		99	static void req_destroy (eio_req *grp);
		100	#define EIO_DESTROY(req) req_destroy (req)
96		101
97	enum {	102	enum {
98	FLAG_CANCELLED = 0x01,	103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	104	};
100		105
		106	#include "libeio/eio.c"
		107
101	typedef aio_cb *aio_req;	108	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	109	typedef eio_req *aio_req_ornot;
103		110
104	enum {	111	static SV *on_next_submit;
105	PRI_MIN = -4,	112	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	113	static int max_outstanding;
117	static int respipe [2];
118		114
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	115	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		116
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	117	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);	118	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	119
		120	static void want_poll (void)
		121	{
		122	/* write a dummy byte to the pipe so fh becomes ready */
		123	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		124	}
		125
		126	static void done_poll (void)
		127	{
		128	/* read any signals sent by the worker threads */
		129	char buf [4];
		130	while (respipe_read (respipe [0], buf, 4) == 4)
		131	;
		132	}
134		133
135	/* must be called at most once */	134	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	135	static SV *req_sv (aio_req req, const char *klass)
137	{	136	{
138	if (!req->self)	137	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	155	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	156	}
158		157
159	static void aio_grp_feed (aio_req grp)	158	static void aio_grp_feed (aio_req grp)
160	{	159	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	160	if (grp->sv2 && SvOK (grp->sv2))
162	{	161	{
163	int old_len = grp->length;	162	dSP;
164		163
165	if (grp->fh2 && SvOK (grp->fh2))	164	ENTER;
		165	SAVETMPS;
		166	PUSHMARK (SP);
		167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		168	PUTBACK;
		169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		170	SPAGAIN;
		171	FREETMPS;
		172	LEAVE;
		173	}
		174	}
		175
		176	static void req_submit (eio_req *req)
		177	{
		178	eio_submit (req);
		179
		180	if (on_next_submit)
		181	{
		182	dSP;
		183	SV *cb = sv_2mortal (on_next_submit);
		184
		185	on_next_submit = 0;
		186
		187	PUSHMARK (SP);
		188	PUTBACK;
		189	call_sv (cb, G_DISCARD | G_EVAL);
		190	}
		191	}
		192
		193	static int req_invoke (eio_req *req)
		194	{
		195	dSP;
		196
		197	if (req->flags & FLAG_SV2_RO_OFF)
		198	SvREADONLY_off (req->sv2);
		199
		200	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		201	{
		202	ENTER;
		203	SAVETMPS;
		204	PUSHMARK (SP);
		205	EXTEND (SP, 1);
		206
		207	switch (req->type)
166	{	208	{
167	dSP;	209	case EIO_READDIR:
		210	{
		211	SV *rv = &PL_sv_undef;
168		212
169	ENTER;	213	if (req->result >= 0)
170	SAVETMPS;	214	{
171	PUSHMARK (SP);	215	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	char *buf = req->ptr2;
173	PUTBACK;	217	AV *av = newAV ();
174	call_sv (grp->fh2, G_VOID | G_EVAL);	218
175	SPAGAIN;	219	av_extend (av, req->result - 1);
176	FREETMPS;	220
177	LEAVE;	221	for (i = 0; i < req->result; ++i)
		222	{
		223	SV *sv = newSVpv (buf, 0);
		224
		225	av_store (av, i, sv);
		226	buf += SvCUR (sv) + 1;
		227	}
		228
		229	rv = sv_2mortal (newRV_noinc ((SV *)av));
		230	}
		231
		232	PUSHs (rv);
		233	}
		234	break;
		235
		236	case EIO_OPEN:
		237	{
		238	/* convert fd to fh */
		239	SV *fh = &PL_sv_undef;
		240
		241	if (req->result >= 0)
		242	{
		243	GV *gv = (GV *)sv_newmortal ();
		244	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		245	char sym [64];
		246	int symlen;
		247
		248	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		249	gv_init (gv, stash, sym, symlen, 0);
		250
		251	symlen = snprintf (
		252	sym,
		253	sizeof (sym),
		254	"%s&=%d",
		255	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		256	req->result
		257	);
		258
		259	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		260	fh = (SV *)gv;
		261	}
		262
		263	PUSHs (fh);
		264	}
		265	break;
		266
		267	case EIO_GROUP:
		268	req->int1 = 2; /* mark group as finished */
		269
		270	if (req->sv1)
		271	{
		272	int i;
		273	AV *av = (AV *)req->sv1;
		274
		275	EXTEND (SP, AvFILL (av) + 1);
		276	for (i = 0; i <= AvFILL (av); ++i)
		277	PUSHs (*av_fetch (av, i, 0));
		278	}
		279	break;
		280
		281	case EIO_NOP:
		282	case EIO_BUSY:
		283	break;
		284
		285	case EIO_READLINK:
		286	if (req->result > 0)
		287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		288	break;
		289
		290	case EIO_STAT:
		291	case EIO_LSTAT:
		292	case EIO_FSTAT:
		293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		294	PL_laststatval = req->result;
		295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		296	PUSHs (sv_2mortal (newSViv (req->result)));
		297	break;
		298
		299	case EIO_READ:
		300	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		301	*SvEND (req->sv2) = 0;
		302	PUSHs (sv_2mortal (newSViv (req->result)));
		303	break;
		304
		305	case EIO_DUP2:
		306	if (req->result > 0)
		307	req->result = 0;
		308	/* FALLTHROUGH */
		309
		310	default:
		311	PUSHs (sv_2mortal (newSViv (req->result)));
		312	break;
178	}	313	}
179		314
180	/* stop if no progress has been made */	315	errno = req->errorno;
181	if (old_len == grp->length)	316
182	{	317	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	318	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	319	SPAGAIN;
185	break;	320
186	}	321	FREETMPS;
		322	LEAVE;
		323
		324	PUTBACK;
187	}	325	}
188	}
189		326
190	static void aio_grp_dec (aio_req grp)	327	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	}	328	}
204		329
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213	pthread_mutex_lock (&reslock);
214	#endif
215	req = ress;
216	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217	pthread_mutex_unlock (&reslock);
218	#endif
219
220	if (req)
221	return;
222
223	FD_ZERO(&rfd);
224	FD_SET(respipe [0], &rfd);
225
226	select (respipe [0] + 1, &rfd, 0, 0, 0);
227	}
228	}
229
230	static void req_invoke (aio_req req)
231	{
232	dSP;
233	int errorno = errno;
234
235	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236	return;
237
238	errno = req->errorno;
239
240	ENTER;
241	SAVETMPS;
242	PUSHMARK (SP);
243	EXTEND (SP, 1);
244
245	switch (req->type)
246	{
247	case REQ_READDIR:
248	{
249	SV *rv = &PL_sv_undef;
250
251	if (req->result >= 0)
252	{
253	char *buf = req->data2ptr;
254	AV *av = newAV ();
255
256	while (req->result)
257	{
258	SV *sv = newSVpv (buf, 0);
259
260	av_push (av, sv);
261	buf += SvCUR (sv) + 1;
262	req->result--;
263	}
264
265	rv = sv_2mortal (newRV_noinc ((SV *)av));
266	}
267
268	PUSHs (rv);
269	}
270	break;
271
272	case REQ_OPEN:
273	{
274	/* convert fd to fh */
275	SV *fh;
276
277	PUSHs (sv_2mortal (newSViv (req->result)));
278	PUTBACK;
279	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280	SPAGAIN;
281
282	fh = SvREFCNT_inc (POPs);
283
284	PUSHMARK (SP);
285	XPUSHs (sv_2mortal (fh));
286	}
287	break;
288
289	case REQ_GROUP:
290	req->fd = 2; /* mark group as finished */
291
292	if (req->data)
293	{
294	int i;
295	AV *av = (AV *)req->data;
296
297	EXTEND (SP, AvFILL (av) + 1);
298	for (i = 0; i <= AvFILL (av); ++i)
299	PUSHs (*av_fetch (av, i, 0));
300	}
301	break;
302
303	case REQ_NOP:
304	case REQ_SLEEP:
305	break;
306
307	default:
308	PUSHs (sv_2mortal (newSViv (req->result)));
309	break;
310	}
311
312
313	PUTBACK;
314	call_sv (req->callback, G_VOID | G_EVAL);
315	SPAGAIN;
316
317	FREETMPS;
318	LEAVE;
319
320	errno = errorno;
321
322	if (SvTRUE (ERRSV))
323	{
324	req_free (req);
325	croak (0);
326	}
327	}
328
329	static void req_free (aio_req req)	330	static void req_destroy (aio_req req)
330	{	331	{
331	if (req->grp)
332	{
333	aio_req grp = req->grp;
334
335	/* unlink request */
336	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339	if (grp->grp_first == req)
340	grp->grp_first = req->grp_next;
341
342	aio_grp_dec (grp);
343	}
344
345	if (req->self)	332	if (req->self)
346	{	333	{
347	sv_unmagic (req->self, PERL_MAGIC_ext);	334	sv_unmagic (req->self, PERL_MAGIC_ext);
348	SvREFCNT_dec (req->self);	335	SvREFCNT_dec (req->self);
349	}	336	}
350		337
351	SvREFCNT_dec (req->data);
352	SvREFCNT_dec (req->fh);	338	SvREFCNT_dec (req->sv1);
353	SvREFCNT_dec (req->fh2);	339	SvREFCNT_dec (req->sv2);
354	SvREFCNT_dec (req->callback);	340	SvREFCNT_dec (req->callback);
355	Safefree (req->statdata);
356
357	if (req->type == REQ_READDIR && req->result >= 0)
358	free (req->data2ptr);
359		341
360	Safefree (req);	342	Safefree (req);
361	}	343	}
362		344
363	static void req_cancel (aio_req req)	345	static void req_cancel_subs (aio_req grp)
364	{	346	{
365	req->flags |= FLAG_CANCELLED;	347	aio_req sub;
366		348
367	if (req->type == REQ_GROUP)	349	if (grp->type != EIO_GROUP)
		350	return;
		351
		352	SvREFCNT_dec (grp->sv2);
		353	grp->sv2 = 0;
		354
		355	eio_grp_cancel (grp);
		356	}
		357
		358	#ifdef USE_SOCKETS_AS_HANDLES
		359	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		360	#else
		361	# define TO_SOCKET(x) (x)
		362	#endif
		363
		364	static void
		365	create_respipe (void)
		366	{
		367	int old_readfd = respipe [0];
		368
		369	if (respipe [1] >= 0)
		370	respipe_close (TO_SOCKET (respipe [1]));
		371
		372	#ifdef _WIN32
		373	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		374	#else
		375	if (pipe (respipe))
		376	#endif
		377	croak ("unable to initialize result pipe");
		378
		379	if (old_readfd >= 0)
368	{	380	{
369	aio_req sub;	381	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		382	croak ("unable to initialize result pipe(2)");
370		383
371	for (sub = req->grp_first; sub; sub = sub->grp_next)	384	respipe_close (respipe [0]);
372	req_cancel (sub);	385	respipe [0] = old_readfd;
373	}	386	}
374	}
375		387
376	static int poll_cb ()	388	#ifdef _WIN32
377	{	389	int arg = 1;
378	dSP;	390	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
379	int count = 0;	391	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
380	int do_croak = 0;	392	#else
381	aio_req req;	393	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		394	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		395	#endif
		396	croak ("unable to initialize result pipe(3)");
382		397
383	for (;;)	398	respipe_osf [0] = TO_SOCKET (respipe [0]);
		399	respipe_osf [1] = TO_SOCKET (respipe [1]);
		400	}
		401
		402	static void poll_wait (void)
		403	{
		404	fd_set rfd;
		405
		406	while (eio_nreqs ())
384	{	407	{
385	pthread_mutex_lock (&reslock);	408	int size;
386	req = ress;
387		409
		410	X_LOCK (reslock);
		411	size = res_queue.size;
		412	X_UNLOCK (reslock);
		413
388	if (req)	414	if (size)
389	{
390	ress = req->next;
391
392	if (!ress)
393	{
394	/* read any signals sent by the worker threads */
395	char buf [32];
396	while (read (respipe [0], buf, 32) == 32)
397	;
398
399	rese = 0;
400	}
401	}
402
403	pthread_mutex_unlock (&reslock);
404
405	if (!req)
406	break;	415	return;
407		416
408	--nreqs;	417	etp_maybe_start_thread ();
409		418
410	if (req->type == REQ_QUIT)	419	FD_ZERO (&rfd);
411	started--;	420	FD_SET (respipe [0], &rfd);
412	else if (req->type == REQ_GROUP && req->length)
413	{
414	req->fd = 1; /* mark request as delayed */
415	continue;
416	}
417	else
418	{
419	if (req->type == REQ_READ)
420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421		421
422	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	422	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
423	SvREADONLY_off (req->data);
424
425	if (req->statdata)
426	{
427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428	PL_laststatval = req->result;
429	PL_statcache = *(req->statdata);
430	}
431
432	req_invoke (req);
433
434	count++;
435	}
436
437	req_free (req);
438	}	423	}
439
440	return count;
441	}	424	}
442		425
443	static void *aio_proc(void *arg);	426	static int poll_cb (void)
444
445	static void start_thread (void)
446	{	427	{
447	sigset_t fullsigset, oldsigset;	428	int res;
448	pthread_t tid;
449	pthread_attr_t attr;
450		429
451	pthread_attr_init (&attr);	430	do
452	pthread_attr_setstacksize (&attr, STACKSIZE);
453	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455	sigfillset (&fullsigset);
456	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459	started++;
460
461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
462	}
463
464	static void req_send (aio_req req)
465	{
466	while (started < wanted && nreqs >= started)
467	start_thread ();
468
469	++nreqs;
470
471	pthread_mutex_lock (&reqlock);
472
473	req->next = 0;
474
475	if (reqe)
476	{	431	{
477	reqe->next = req;	432	res = eio_poll ();
478	reqe = req;	433
		434	if (res > 0)
		435	croak (0);
479	}	436	}
480	else	437	while (max_outstanding && max_outstanding <= eio_nreqs ());
481	reqe = reqs = req;
482
483	pthread_cond_signal (&reqwait);
484	pthread_mutex_unlock (&reqlock);
485
486	if (nreqs > max_outstanding)
487	for (;;)
488	{
489	poll_cb ();
490
491	if (nreqs <= max_outstanding)
492	break;
493
494	poll_wait ();
495	}
496	}
497
498	static void end_thread (void)
499	{
500	aio_req req;
501	Newz (0, req, 1, aio_cb);
502	req->type = REQ_QUIT;
503
504	req_send (req);
505	}
506
507	static void min_parallel (int nthreads)
508	{
509	if (wanted < nthreads)
510	wanted = nthreads;
511	}
512
513	static void max_parallel (int nthreads)
514	{
515	int cur = started;
516
517	if (wanted > nthreads)
518	wanted = nthreads;
519
520	while (cur > wanted)
521	{
522	end_thread ();
523	cur--;
524	}
525
526	while (started > wanted)
527	{
528	poll_wait ();
529	poll_cb ();
530	}
531	}
532
533	static void create_pipe ()
534	{
535	if (pipe (respipe))
536	croak ("unable to initialize result pipe");
537
538	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539	croak ("cannot set result pipe to nonblocking mode");
540
541	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542	croak ("cannot set result pipe to nonblocking mode");
543	}
544
545	/*****************************************************************************/
546	/* work around various missing functions */
547
548	#if !HAVE_PREADWRITE
549	# define pread aio_pread
550	# define pwrite aio_pwrite
551
552	/*
553	* make our pread/pwrite safe against themselves, but not against
554	* normal read/write by using a mutex. slows down execution a lot,
555	* but that's your problem, not mine.
556	*/
557	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
558
559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560	{
561	ssize_t res;
562	off_t ooffset;
563
564	pthread_mutex_lock (&preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = read (fd, buf, count);
568	lseek (fd, ooffset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570		438
571	return res;	439	return res;
572	}	440	}
573		441
574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575	{
576	ssize_t res;
577	off_t ooffset;
578
579	pthread_mutex_lock (&preadwritelock);
580	ooffset = lseek (fd, 0, SEEK_CUR);
581	lseek (fd, offset, SEEK_SET);
582	res = write (fd, buf, count);
583	lseek (fd, offset, SEEK_SET);
584	pthread_mutex_unlock (&preadwritelock);
585
586	return res;
587	}
588	#endif
589
590	#if !HAVE_FDATASYNC
591	# define fdatasync fsync
592	#endif
593
594	#if !HAVE_READAHEAD
595	# define readahead aio_readahead
596
597	static ssize_t readahead (int fd, off_t offset, size_t count)
598	{
599	char readahead_buf[4096];
600
601	while (count > 0)
602	{
603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
604
605	pread (fd, readahead_buf, len, offset);
606	offset += len;
607	count -= len;
608	}
609
610	errno = 0;
611	}
612	#endif
613
614	#if !HAVE_READDIR_R
615	# define readdir_r aio_readdir_r
616
617	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
618
619	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620	{
621	struct dirent *e;
622	int errorno;
623
624	pthread_mutex_lock (&readdirlock);
625
626	e = readdir (dirp);
627	errorno = errno;
628
629	if (e)
630	{
631	*res = ent;
632	strcpy (ent->d_name, e->d_name);
633	}
634	else
635	*res = 0;
636
637	pthread_mutex_unlock (&readdirlock);
638
639	errno = errorno;
640	return e ? 0 : -1;
641	}
642	#endif
643
644	/* sendfile always needs emulation */
645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
646	{
647	ssize_t res;
648
649	if (!count)
650	return 0;
651
652	#if HAVE_SENDFILE
653	# if __linux
654	res = sendfile (ofd, ifd, &offset, count);
655
656	# elif __freebsd
657	/*
658	* Of course, the freebsd sendfile is a dire hack with no thoughts
659	* wasted on making it similar to other I/O functions.
660	*/
661	{
662	off_t sbytes;
663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664
665	if (res < 0 && sbytes)
666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
667	res = sbytes;
668	}
669
670	# elif __hpux
671	res = sendfile (ofd, ifd, offset, count, 0, 0);
672
673	# elif __solaris
674	{
675	struct sendfilevec vec;
676	size_t sbytes;
677
678	vec.sfv_fd = ifd;
679	vec.sfv_flag = 0;
680	vec.sfv_off = offset;
681	vec.sfv_len = count;
682
683	res = sendfilev (ofd, &vec, 1, &sbytes);
684
685	if (res < 0 && sbytes)
686	res = sbytes;
687	}
688
689	# endif
690	#else
691	res = -1;
692	errno = ENOSYS;
693	#endif
694
695	if (res < 0
696	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
697	#if __solaris
698	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
699	#endif
700	)
701	)
702	{
703	/* emulate sendfile. this is a major pain in the ass */
704	char buf[4096];
705	res = 0;
706
707	while (count)
708	{
709	ssize_t cnt;
710
711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
712
713	if (cnt <= 0)
714	{
715	if (cnt && !res) res = -1;
716	break;
717	}
718
719	cnt = write (ofd, buf, cnt);
720
721	if (cnt <= 0)
722	{
723	if (cnt && !res) res = -1;
724	break;
725	}
726
727	offset += cnt;
728	res += cnt;
729	count -= cnt;
730	}
731	}
732
733	return res;
734	}
735
736	/* read a full directory */
737	static int scandir_ (const char *path, void **namesp)
738	{
739	DIR *dirp = opendir (path);
740	union
741	{
742	struct dirent d;
743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744	} u;
745	struct dirent *entp;
746	char *name, *names;
747	int memlen = 4096;
748	int memofs = 0;
749	int res = 0;
750	int errorno;
751
752	if (!dirp)
753	return -1;
754
755	names = malloc (memlen);
756
757	for (;;)
758	{
759	errno = 0, readdir_r (dirp, &u.d, &entp);
760
761	if (!entp)
762	break;
763
764	name = entp->d_name;
765
766	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767	{
768	int len = strlen (name) + 1;
769
770	res++;
771
772	while (memofs + len > memlen)
773	{
774	memlen *= 2;
775	names = realloc (names, memlen);
776	if (!names)
777	break;
778	}
779
780	memcpy (names + memofs, name, len);
781	memofs += len;
782	}
783	}
784
785	errorno = errno;
786	closedir (dirp);
787
788	if (errorno)
789	{
790	free (names);
791	errno = errorno;
792	res = -1;
793	}
794
795	*namesp = (void *)names;
796	return res;
797	}
798
799	/*****************************************************************************/
800
801	static void *aio_proc (void *thr_arg)
802	{
803	aio_req req;
804	int type;
805
806	do
807	{
808	pthread_mutex_lock (&reqlock);
809
810	for (;;)
811	{
812	req = reqs;
813
814	if (reqs)
815	{
816	reqs = reqs->next;
817	if (!reqs) reqe = 0;
818	}
819
820	if (req)
821	break;
822
823	pthread_cond_wait (&reqwait, &reqlock);
824	}
825
826	pthread_mutex_unlock (&reqlock);
827
828	errno = 0; /* strictly unnecessary */
829	type = req->type; /* remember type for QUIT check */
830
831	if (!(req->flags & FLAG_CANCELLED))
832	switch (type)
833	{
834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
836
837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
839
840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
843
844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
845	case REQ_CLOSE: req->result = close (req->fd); break;
846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
851
852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853	case REQ_FSYNC: req->result = fsync (req->fd); break;
854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855
856	case REQ_SLEEP:
857	{
858	struct timeval tv;
859
860	tv.tv_sec = req->fd;
861	tv.tv_usec = req->fd2;
862
863	req->result = select (0, 0, 0, 0, &tv);
864	}
865
866	case REQ_GROUP:
867	case REQ_NOP:
868	case REQ_QUIT:
869	break;
870
871	default:
872	req->result = ENOSYS;
873	break;
874	}
875
876	req->errorno = errno;
877
878	pthread_mutex_lock (&reslock);
879
880	req->next = 0;
881
882	if (rese)
883	{
884	rese->next = req;
885	rese = req;
886	}
887	else
888	{
889	rese = ress = req;
890
891	/* write a dummy byte to the pipe so fh becomes ready */
892	write (respipe [1], &respipe, 1);
893	}
894
895	pthread_mutex_unlock (&reslock);
896	}
897	while (type != REQ_QUIT);
898
899	return 0;
900	}
901
902	/*****************************************************************************/
903
904	static void atfork_prepare (void)
905	{
906	pthread_mutex_lock (&reqlock);
907	pthread_mutex_lock (&reslock);
908	#if !HAVE_PREADWRITE
909	pthread_mutex_lock (&preadwritelock);
910	#endif
911	#if !HAVE_READDIR_R
912	pthread_mutex_lock (&readdirlock);
913	#endif
914	}
915
916	static void atfork_parent (void)
917	{
918	#if !HAVE_READDIR_R
919	pthread_mutex_unlock (&readdirlock);
920	#endif
921	#if !HAVE_PREADWRITE
922	pthread_mutex_unlock (&preadwritelock);
923	#endif
924	pthread_mutex_unlock (&reslock);
925	pthread_mutex_unlock (&reqlock);
926	}
927
928	static void atfork_child (void)	442	static void atfork_child (void)
929	{	443	{
930	aio_req prv;
931
932	started = 0;
933
934	while (reqs)
935	{
936	prv = reqs;
937	reqs = prv->next;
938	req_free (prv);
939	}
940
941	reqs = reqe = 0;
942
943	while (ress)
944	{
945	prv = ress;
946	ress = prv->next;
947	req_free (prv);
948	}
949
950	ress = rese = 0;
951
952	close (respipe [0]);
953	close (respipe [1]);
954	create_pipe ();	444	create_respipe ();
955
956	atfork_parent ();
957	}	445	}
958		446
959	#define dREQ \	447	#define dREQ \
960	aio_req req; \	448	aio_req req; \
961	int req_pri = next_pri; \	449	int req_pri = next_pri; \
962	next_pri = DEFAULT_PRI + PRI_BIAS; \	450	next_pri = EIO_PRI_DEFAULT; \
963	\	451	\
964	if (SvOK (callback) && !SvROK (callback)) \	452	if (SvOK (callback) && !SvROK (callback)) \
965	croak ("callback must be undef or of reference type"); \	453	croak ("callback must be undef or of reference type"); \
966	\	454	\
967	Newz (0, req, 1, aio_cb); \	455	Newz (0, req, 1, eio_req); \
968	if (!req) \	456	if (!req) \
969	croak ("out of memory during aio_req allocation"); \	457	croak ("out of memory during eio_req allocation"); \
970	\	458	\
971	req->callback = newSVsv (callback); \	459	req->callback = newSVsv (callback); \
972	req->pri = req_pri	460	req->pri = req_pri
973		461
974	#define REQ_SEND \	462	#define REQ_SEND \
975	req_send (req); \	463	req_submit (req); \
976	\	464	\
977	if (GIMME_V != G_VOID) \	465	if (GIMME_V != G_VOID) \
978	XPUSHs (req_sv (req, AIO_REQ_KLASS));	466	XPUSHs (req_sv (req, AIO_REQ_KLASS));
979		467
980	MODULE = IO::AIO PACKAGE = IO::AIO	468	MODULE = IO::AIO PACKAGE = IO::AIO
981		469
982	PROTOTYPES: ENABLE	470	PROTOTYPES: ENABLE
983		471
984	BOOT:	472	BOOT:
985	{	473	{
986	HV *stash = gv_stashpv ("IO::AIO", 1);	474	stash = gv_stashpv ("IO::AIO", 1);
		475
987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		481	#ifndef _WIN32
		482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		483	#endif
990		484
991	create_pipe ();	485	create_respipe ();
992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
993	}
994		486
		487	if (eio_init (want_poll, done_poll) < 0)
		488	croak ("IO::AIO: unable to initialise eio library");
		489
		490	/* atfork child called in fifo order, so before eio's handler */
		491	X_THREAD_ATFORK (0, 0, atfork_child);
		492	}
		493
995	void	494	void
996	min_parallel (nthreads)	495	max_poll_reqs (int nreqs)
997	int nthreads
998	PROTOTYPE: $	496	PROTOTYPE: $
		497	CODE:
		498	eio_set_max_poll_reqs (nreqs);
999		499
1000	void	500	void
1001	max_parallel (nthreads)	501	max_poll_time (double nseconds)
1002	int nthreads
1003	PROTOTYPE: $	502	PROTOTYPE: $
1004
1005	int
1006	max_outstanding (nreqs)
1007	int nreqs
1008	PROTOTYPE: $
1009	CODE:	503	CODE:
1010	RETVAL = max_outstanding;	504	eio_set_max_poll_time (nseconds);
		505
		506	void
		507	min_parallel (int nthreads)
		508	PROTOTYPE: $
		509	CODE:
		510	eio_set_min_parallel (nthreads);
		511
		512	void
		513	max_parallel (int nthreads)
		514	PROTOTYPE: $
		515	CODE:
		516	eio_set_max_parallel (nthreads);
		517
		518	void
		519	max_idle (int nthreads)
		520	PROTOTYPE: $
		521	CODE:
		522	eio_set_max_idle (nthreads);
		523
		524	void
		525	max_outstanding (int maxreqs)
		526	PROTOTYPE: $
		527	CODE:
1011	max_outstanding = nreqs;	528	max_outstanding = maxreqs;
1012		529
1013	void	530	void
1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	531	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015	SV * pathname
1016	int flags
1017	int mode
1018	SV * callback
1019	PROTOTYPE: $$$;$	532	PROTOTYPE: $$$;$
1020	PPCODE:	533	PPCODE:
1021	{	534	{
1022	dREQ;	535	dREQ;
1023		536
1024	req->type = REQ_OPEN;	537	req->type = EIO_OPEN;
1025	req->data = newSVsv (pathname);	538	req->sv1 = newSVsv (pathname);
1026	req->dataptr = SvPVbyte_nolen (req->data);	539	req->ptr1 = SvPVbyte_nolen (req->sv1);
1027	req->fd = flags;	540	req->int1 = flags;
1028	req->mode = mode;	541	req->int2 = mode;
1029		542
1030	REQ_SEND;	543	REQ_SEND;
1031	}	544	}
1032		545
1033	void	546	void
1034	aio_close (fh,callback=&PL_sv_undef)	547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035	SV * fh
1036	SV * callback
1037	PROTOTYPE: $;$	548	PROTOTYPE: $;$
1038	ALIAS:	549	ALIAS:
1039	aio_close = REQ_CLOSE
1040	aio_fsync = REQ_FSYNC	550	aio_fsync = EIO_FSYNC
1041	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = EIO_FDATASYNC
1042	PPCODE:	552	PPCODE:
1043	{	553	{
1044	dREQ;	554	dREQ;
1045		555
1046	req->type = ix;	556	req->type = ix;
1047	req->fh = newSVsv (fh);	557	req->sv1 = newSVsv (fh);
1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	558	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1049		559
1050	REQ_SEND (req);	560	REQ_SEND (req);
1051	}	561	}
1052		562
1053	void	563	void
		564	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		565	PROTOTYPE: $;$
		566	PPCODE:
		567	{
		568	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		569	dREQ;
		570
		571	if (close_pipe < 0)
		572	{
		573	int pipefd [2];
		574
		575	if (pipe (pipefd) < 0
		576	|| close (pipefd [1]) < 0
		577	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		578	abort (); /*D*/
		579
		580	close_pipe = pipefd [0];
		581	}
		582
		583	req->type = EIO_DUP2;
		584	req->int1 = close_pipe;
		585	req->sv2 = newSVsv (fh);
		586	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		587
		588	REQ_SEND (req);
		589	}
		590
		591	void
1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	592	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055	SV * fh
1056	UV offset
1057	UV length
1058	SV * data
1059	UV dataoffset
1060	SV * callback
1061	ALIAS:	593	ALIAS:
1062	aio_read = REQ_READ	594	aio_read = EIO_READ
1063	aio_write = REQ_WRITE	595	aio_write = EIO_WRITE
1064	PROTOTYPE: $$$$$;$	596	PROTOTYPE: $$$$$;$
1065	PPCODE:	597	PPCODE:
1066	{	598	{
1067	aio_req req;
1068	STRLEN svlen;	599	STRLEN svlen;
1069	char *svptr = SvPVbyte (data, svlen);	600	char *svptr = SvPVbyte (data, svlen);
		601	UV len = SvUV (length);
1070		602
1071	SvUPGRADE (data, SVt_PV);	603	SvUPGRADE (data, SVt_PV);
1072	SvPOK_on (data);	604	SvPOK_on (data);
1073		605
1074	if (dataoffset < 0)	606	if (dataoffset < 0)
1075	dataoffset += svlen;	607	dataoffset += svlen;
1076		608
1077	if (dataoffset < 0 || dataoffset > svlen)	609	if (dataoffset < 0 || dataoffset > svlen)
1078	croak ("data offset outside of string");	610	croak ("dataoffset outside of data scalar");
1079		611
1080	if (ix == REQ_WRITE)	612	if (ix == EIO_WRITE)
1081	{	613	{
1082	/* write: check length and adjust. */	614	/* write: check length and adjust. */
1083	if (length < 0 || length + dataoffset > svlen)	615	if (!SvOK (length) || len + dataoffset > svlen)
1084	length = svlen - dataoffset;	616	len = svlen - dataoffset;
1085	}	617	}
1086	else	618	else
1087	{	619	{
1088	/* read: grow scalar as necessary */	620	/* read: grow scalar as necessary */
1089	svptr = SvGROW (data, length + dataoffset);	621	svptr = SvGROW (data, len + dataoffset + 1);
1090	}	622	}
1091		623
1092	if (length < 0)	624	if (len < 0)
1093	croak ("length must not be negative");	625	croak ("length must not be negative");
1094		626
1095	{	627	{
1096	dREQ;	628	dREQ;
1097		629
1098	req->type = ix;	630	req->type = ix;
1099	req->fh = newSVsv (fh);	631	req->sv1 = newSVsv (fh);
1100	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1101	: IoOFP (sv_2io (fh)));	633	: IoOFP (sv_2io (fh)));
		634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102	req->offset = offset;	635	req->size = len;
1103	req->length = length;
1104	req->data = SvREFCNT_inc (data);	636	req->sv2 = SvREFCNT_inc (data);
1105	req->dataptr = (char *)svptr + dataoffset;	637	req->ptr2 = (char *)svptr + dataoffset;
		638	req->stroffset = dataoffset;
1106		639
1107	if (!SvREADONLY (data))	640	if (!SvREADONLY (data))
1108	{	641	{
1109	SvREADONLY_on (data);	642	SvREADONLY_on (data);
1110	req->data2ptr = (void *)data;	643	req->flags |= FLAG_SV2_RO_OFF;
1111	}	644	}
1112		645
1113	REQ_SEND;	646	REQ_SEND;
1114	}	647	}
1115	}	648	}
1116		649
1117	void	650	void
		651	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		652	PROTOTYPE: $$;$
		653	PPCODE:
		654	{
		655	SV *data;
		656	dREQ;
		657
		658	req->type = EIO_READLINK;
		659	req->sv1 = newSVsv (path);
		660	req->ptr1 = SvPVbyte_nolen (req->sv1);
		661
		662	REQ_SEND;
		663	}
		664
		665	void
1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	666	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1119	SV * out_fh
1120	SV * in_fh
1121	UV in_offset
1122	UV length
1123	SV * callback
1124	PROTOTYPE: $$$$;$	667	PROTOTYPE: $$$$;$
1125	PPCODE:	668	PPCODE:
1126	{	669	{
1127	dREQ;	670	dREQ;
1128		671
1129	req->type = REQ_SENDFILE;	672	req->type = EIO_SENDFILE;
1130	req->fh = newSVsv (out_fh);	673	req->sv1 = newSVsv (out_fh);
1131	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1132	req->fh2 = newSVsv (in_fh);	675	req->sv2 = newSVsv (in_fh);
1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1134	req->offset = in_offset;	677	req->offs = SvVAL64 (in_offset);
1135	req->length = length;	678	req->size = length;
1136		679
1137	REQ_SEND;	680	REQ_SEND;
1138	}	681	}
1139		682
1140	void	683	void
1141	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	684	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	UV offset
1144	IV length
1145	SV * callback
1146	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1147	PPCODE:	686	PPCODE:
1148	{	687	{
1149	dREQ;	688	dREQ;
1150		689
1151	req->type = REQ_READAHEAD;	690	req->type = EIO_READAHEAD;
1152	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1154	req->offset = offset;	693	req->offs = SvVAL64 (offset);
1155	req->length = length;	694	req->size = length;
1156		695
1157	REQ_SEND;	696	REQ_SEND;
1158	}	697	}
1159		698
1160	void	699	void
1161	aio_stat (fh_or_path,callback=&PL_sv_undef)	700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162	SV * fh_or_path
1163	SV * callback
1164	ALIAS:	701	ALIAS:
1165	aio_stat = REQ_STAT	702	aio_stat = EIO_STAT
1166	aio_lstat = REQ_LSTAT	703	aio_lstat = EIO_LSTAT
1167	PPCODE:	704	PPCODE:
1168	{	705	{
1169	dREQ;	706	dREQ;
1170		707
1171	New (0, req->statdata, 1, Stat_t);	708	req->sv1 = newSVsv (fh_or_path);
1172	if (!req->statdata)
1173	{
1174	req_free (req);
1175	croak ("out of memory during aio_req->statdata allocation");
1176	}
1177		709
1178	if (SvPOK (fh_or_path))	710	if (SvPOK (req->sv1))
1179	{	711	{
1180	req->type = ix;	712	req->type = ix;
1181	req->data = newSVsv (fh_or_path);
1182	req->dataptr = SvPVbyte_nolen (req->data);	713	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	}	714	}
1184	else	715	else
1185	{	716	{
1186	req->type = REQ_FSTAT;	717	req->type = EIO_FSTAT;
1187	req->fh = newSVsv (fh_or_path);
1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189	}	719	}
1190		720
1191	REQ_SEND;	721	REQ_SEND;
1192	}	722	}
1193		723
1194	void	724	void
		725	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		726	PPCODE:
		727	{
		728	dREQ;
		729
		730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		732	req->sv1 = newSVsv (fh_or_path);
		733
		734	if (SvPOK (req->sv1))
		735	{
		736	req->type = EIO_UTIME;
		737	req->ptr1 = SvPVbyte_nolen (req->sv1);
		738	}
		739	else
		740	{
		741	req->type = EIO_FUTIME;
		742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		743	}
		744
		745	REQ_SEND;
		746	}
		747
		748	void
		749	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->sv1 = newSVsv (fh_or_path);
		755	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		756
		757	if (SvPOK (req->sv1))
		758	{
		759	req->type = EIO_TRUNCATE;
		760	req->ptr1 = SvPVbyte_nolen (req->sv1);
		761	}
		762	else
		763	{
		764	req->type = EIO_FTRUNCATE;
		765	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		766	}
		767
		768	REQ_SEND;
		769	}
		770
		771	void
		772	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		773	ALIAS:
		774	aio_chmod = EIO_CHMOD
		775	aio_mkdir = EIO_MKDIR
		776	PPCODE:
		777	{
		778	dREQ;
		779
		780	req->int2 = mode;
		781	req->sv1 = newSVsv (fh_or_path);
		782
		783	if (SvPOK (req->sv1))
		784	{
		785	req->type = ix;
		786	req->ptr1 = SvPVbyte_nolen (req->sv1);
		787	}
		788	else
		789	{
		790	req->type = EIO_FCHMOD;
		791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		792	}
		793
		794	REQ_SEND;
		795	}
		796
		797	void
		798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		799	PPCODE:
		800	{
		801	dREQ;
		802
		803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		805	req->sv1 = newSVsv (fh_or_path);
		806
		807	if (SvPOK (req->sv1))
		808	{
		809	req->type = EIO_CHOWN;
		810	req->ptr1 = SvPVbyte_nolen (req->sv1);
		811	}
		812	else
		813	{
		814	req->type = EIO_FCHOWN;
		815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		816	}
		817
		818	REQ_SEND;
		819	}
		820
		821	void
1195	aio_unlink (pathname,callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196	SV * pathname
1197	SV * callback
1198	ALIAS:	823	ALIAS:
1199	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1200	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1201	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1202	PPCODE:	827	PPCODE:
1203	{	828	{
1204	dREQ;	829	dREQ;
1205		830
1206	req->type = ix;	831	req->type = ix;
1207	req->data = newSVsv (pathname);	832	req->sv1 = newSVsv (pathname);
1208	req->dataptr = SvPVbyte_nolen (req->data);	833	req->ptr1 = SvPVbyte_nolen (req->sv1);
		834
		835	REQ_SEND;
		836	}
		837
		838	void
		839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
		844	PPCODE:
		845	{
		846	dREQ;
		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
1209		853
1210	REQ_SEND;	854	REQ_SEND;
1211	}	855	}
1212		856
1213	void	857	void
1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)	858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1215	SV * oldpath
1216	SV * newpath
1217	SV * callback
1218	ALIAS:
1219	aio_link = REQ_LINK
1220	aio_symlink = REQ_SYMLINK
1221	aio_rename = REQ_RENAME
1222	PPCODE:	859	PPCODE:
1223	{	860	{
1224	dREQ;	861	dREQ;
1225		862
1226	req->type = ix;	863	req->type = EIO_MKNOD;
1227	req->fh = newSVsv (oldpath);	864	req->sv1 = newSVsv (pathname);
1228	req->data2ptr = SvPVbyte_nolen (req->fh);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	req->data = newSVsv (newpath);	866	req->int2 = (mode_t)mode;
1230	req->dataptr = SvPVbyte_nolen (req->data);	867	req->offs = dev;
1231		868
1232	REQ_SEND;	869	REQ_SEND;
1233	}	870	}
1234		871
1235	void	872	void
1236	aio_sleep (delay,callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1237	double delay
1238	SV * callback
1239	PPCODE:	874	PPCODE:
1240	{	875	{
1241	dREQ;	876	dREQ;
1242		877
1243	req->type = REQ_SLEEP;	878	req->type = EIO_BUSY;
1244	req->fd = delay < 0. ? 0 : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246		880
1247	REQ_SEND;	881	REQ_SEND;
1248	}	882	}
1249		883
1250	void	884	void
1251	aio_group (callback=&PL_sv_undef)	885	aio_group (SV *callback=&PL_sv_undef)
1252	SV * callback
1253	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1254	PPCODE:	887	PPCODE:
1255	{	888	{
1256	dREQ;	889	dREQ;
1257		890
1258	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
		892
1259	req_send (req);	893	eio_submit (req);
1260
1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262	}	895	}
1263		896
1264	void	897	void
1265	aio_nop (callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1266	SV * callback	899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
1267	PPCODE:	902	PPCODE:
1268	{	903	{
1269	dREQ;	904	dREQ;
1270		905
1271	req->type = REQ_NOP;	906	req->type = ix;
1272		907
1273	REQ_SEND;	908	REQ_SEND;
1274	}	909	}
1275		910
1276	#if 0	911	int
1277		912	aioreq_pri (int pri = 0)
1278	void	913	PROTOTYPE: ;$
1279	aio_pri (int pri = DEFAULT_PRI)
1280	CODE:	914	CODE:
		915	RETVAL = next_pri;
		916	if (items > 0)
		917	{
1281	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1282	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1283	next_pri = pri + PRI_BIAS;	920	next_pri = pri;
		921	}
		922	OUTPUT:
		923	RETVAL
1284		924
1285	#endif	925	void
		926	aioreq_nice (int nice = 0)
		927	CODE:
		928	nice = next_pri - nice;
		929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		931	next_pri = nice;
1286		932
1287	void	933	void
1288	flush ()	934	flush ()
1289	PROTOTYPE:	935	PROTOTYPE:
1290	CODE:	936	CODE:
1291	while (nreqs)	937	while (eio_nreqs ())
1292	{	938	{
1293	poll_wait ();	939	poll_wait ();
1294	poll_cb ();	940	poll_cb ();
1295	}	941	}
1296		942
1297	void	943	int
1298	poll()	944	poll()
1299	PROTOTYPE:	945	PROTOTYPE:
1300	CODE:	946	CODE:
1301	if (nreqs)
1302	{
1303	poll_wait ();	947	poll_wait ();
1304	poll_cb ();	948	RETVAL = poll_cb ();
1305	}	949	OUTPUT:
		950	RETVAL
1306		951
1307	int	952	int
1308	poll_fileno()	953	poll_fileno()
1309	PROTOTYPE:	954	PROTOTYPE:
1310	CODE:	955	CODE:
…		…
1322		967
1323	void	968	void
1324	poll_wait()	969	poll_wait()
1325	PROTOTYPE:	970	PROTOTYPE:
1326	CODE:	971	CODE:
1327	if (nreqs)
1328	poll_wait ();	972	poll_wait ();
1329		973
1330	int	974	int
1331	nreqs()	975	nreqs()
1332	PROTOTYPE:	976	PROTOTYPE:
1333	CODE:	977	CODE:
1334	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1335	OUTPUT:	979	OUTPUT:
1336	RETVAL	980	RETVAL
1337		981
		982	int
		983	nready()
		984	PROTOTYPE:
		985	CODE:
		986	RETVAL = eio_nready ();
		987	OUTPUT:
		988	RETVAL
		989
		990	int
		991	npending()
		992	PROTOTYPE:
		993	CODE:
		994	RETVAL = eio_npending ();
		995	OUTPUT:
		996	RETVAL
		997
		998	int
		999	nthreads()
		1000	PROTOTYPE:
		1001	CODE:
		1002	RETVAL = eio_nthreads ();
		1003	OUTPUT:
		1004	RETVAL
		1005
		1006	void _on_next_submit (SV *cb)
		1007	CODE:
		1008	SvREFCNT_dec (on_next_submit);
		1009	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1010
1338	PROTOTYPES: DISABLE	1011	PROTOTYPES: DISABLE
1339		1012
1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341		1014
1342	void	1015	void
1343	cancel (aio_req_ornot req)	1016	cancel (aio_req_ornot req)
1344	PROTOTYPE:
1345	CODE:	1017	CODE:
1346	req_cancel (req);	1018	eio_cancel (req);
1347		1019
1348	void	1020	void
1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350	CODE:	1022	CODE:
1351	SvREFCNT_dec (req->callback);	1023	SvREFCNT_dec (req->callback);
…		…
1356	void	1028	void
1357	add (aio_req grp, ...)	1029	add (aio_req grp, ...)
1358	PPCODE:	1030	PPCODE:
1359	{	1031	{
1360	int i;	1032	int i;
1361	aio_req req;
1362		1033
1363	if (grp->fd == 2)	1034	if (grp->int1 == 2)
1364	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1035	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365		1036
1366	for (i = 1; i < items; ++i )	1037	for (i = 1; i < items; ++i )
1367	{	1038	{
		1039	aio_req req;
		1040
1368	if (GIMME_V != G_VOID)	1041	if (GIMME_V != G_VOID)
1369	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1042	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370		1043
1371	req = SvAIO_REQ (ST (i));	1044	req = SvAIO_REQ (ST (i));
1372		1045
1373	if (req)	1046	if (req)
1374	{	1047	eio_grp_add (grp, req);
1375	++grp->length;
1376	req->grp = grp;
1377
1378	req->grp_prev = 0;
1379	req->grp_next = grp->grp_first;
1380
1381	if (grp->grp_first)
1382	grp->grp_first->grp_prev = req;
1383
1384	grp->grp_first = req;
1385	}	1048	}
1386	}
1387	}	1049	}
		1050
		1051	void
		1052	cancel_subs (aio_req_ornot req)
		1053	CODE:
		1054	req_cancel_subs (req);
1388		1055
1389	void	1056	void
1390	result (aio_req grp, ...)	1057	result (aio_req grp, ...)
1391	CODE:	1058	CODE:
1392	{	1059	{
1393	int i;	1060	int i;
		1061	AV *av;
		1062
		1063	grp->errorno = errno;
		1064
1394	AV *av = newAV ();	1065	av = newAV ();
1395		1066
1396	for (i = 1; i < items; ++i )	1067	for (i = 1; i < items; ++i )
1397	av_push (av, newSVsv (ST (i)));	1068	av_push (av, newSVsv (ST (i)));
1398		1069
1399	SvREFCNT_dec (grp->data);	1070	SvREFCNT_dec (grp->sv1);
1400	grp->data = (SV *)av;	1071	grp->sv1 = (SV *)av;
1401	}	1072	}
1402		1073
1403	void	1074	void
		1075	errno (aio_req grp, int errorno = errno)
		1076	CODE:
		1077	grp->errorno = errorno;
		1078
		1079	void
1404	feed_limit (aio_req grp, int limit)	1080	limit (aio_req grp, int limit)
1405	CODE:	1081	CODE:
1406	grp->fd2 = limit;	1082	eio_grp_limit (grp, limit);
1407	aio_grp_feed (grp);
1408		1083
1409	void	1084	void
1410	feed (aio_req grp, SV *callback=&PL_sv_undef)	1085	feed (aio_req grp, SV *callback=&PL_sv_undef)
1411	CODE:	1086	CODE:
1412	{	1087	{
1413	SvREFCNT_dec (grp->fh2);	1088	SvREFCNT_dec (grp->sv2);
1414	grp->fh2 = newSVsv (callback);	1089	grp->sv2 = newSVsv (callback);
1415		1090
1416	if (grp->fd2 <= 0)	1091	if (grp->int2 <= 0)
1417	grp->fd2 = 2;	1092	grp->int2 = 2;
1418		1093
1419	aio_grp_feed (grp);	1094	eio_grp_limit (grp, grp->int2);
1420	}	1095	}
1421		1096

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