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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.60 by root, Mon Oct 23 20:05:27 2006 UTC vs.
Revision 1.125 by root, Thu Jun 19 09:05:43 2008 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
23		17
24	#if HAVE_SENDFILE	18	/* perl namespace pollution */
25	# if __linux	19	#undef VERSION
26	# include <sys/sendfile.h>	20
27	# elif __freebsd	21	#ifdef _WIN32
28	# include <sys/socket.h>	22
29	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	24	# undef malloc
31	# include <sys/socket.h>	25	# undef free
32	# elif __solaris /* not yet */	26
33	# 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
34	# else	59	#else
35	# error sendfile support requested but not available	60
36	# 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
37	#endif	68	#endif
38		69
39	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
41	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
42	#endif	83	#endif
43		84
44	#if __ia64	85	static HV *stash;
45	# define STACKSIZE 65536	86	typedef SV SV8; /* byte-sv, used for argument-checking */
46	#else
47	# define STACKSIZE 8192
48	#endif
49
50	enum {
51	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};
63		87
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	88	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	89	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		90
67	typedef struct aio_cb	91	#define EIO_REQ_MEMBERS \
68	{
69	struct aio_cb *volatile next;
70
71	SV *data, *callback;	92	SV *callback; \
72	SV *fh, *fh2;	93	SV *sv1, *sv2; \
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;	94	STRLEN stroffset; \
80	int type;	95	SV *self;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84		96
85	unsigned char flags;	97	#define EIO_NO_WRAPPERS 1
86	unsigned char pri;
87		98
88	SV *self; /* the perl counterpart of this request, if any */	99	#include "libeio/eio.h"
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	100
90	} aio_cb;	101	static int req_invoke (eio_req *req);
		102	#define EIO_FINISH(req) req_invoke (req)
		103	static void aio_grp_feed (eio_req *grp);
		104	#define EIO_FEED(req) aio_grp_feed (req)
		105	static void req_destroy (eio_req *grp);
		106	#define EIO_DESTROY(req) req_destroy (req)
91		107
92	enum {	108	enum {
93	FLAG_CANCELLED = 0x01,	109	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	};	110	};
95		111
		112	#include "libeio/eio.c"
		113
96	typedef aio_cb *aio_req;	114	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	115	typedef eio_req *aio_req_ornot;
98		116
99	enum {	117	static SV *on_next_submit;
100	PRI_MIN = 4,	118	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = -4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	119	static int max_outstanding;
112	static int respipe [2];
113		120
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	121	static int respipe_osf [2], respipe [2] = { -1, -1 };
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		122
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	123	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	124	static void req_cancel (aio_req req);
122	static void req_free (aio_req req);	125
		126	static void want_poll (void)
		127	{
		128	/* write a dummy byte to the pipe so fh becomes ready */
		129	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		130	}
		131
		132	static void done_poll (void)
		133	{
		134	/* read any signals sent by the worker threads */
		135	char buf [4];
		136	while (respipe_read (respipe [0], buf, 4) == 4)
		137	;
		138	}
123		139
124	/* must be called at most once */	140	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	141	static SV *req_sv (aio_req req, const char *klass)
126	{	142	{
127	if (!req->self)	143	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	161	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	162	}
147		163
148	static void aio_grp_feed (aio_req grp)	164	static void aio_grp_feed (aio_req grp)
149	{	165	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	166	if (grp->sv2 && SvOK (grp->sv2))
151	{	167	{
152	int old_len = grp->length;	168	dSP;
153		169
154	if (grp->fh2 && SvOK (grp->fh2))	170	ENTER;
		171	SAVETMPS;
		172	PUSHMARK (SP);
		173	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		174	PUTBACK;
		175	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		176	SPAGAIN;
		177	FREETMPS;
		178	LEAVE;
		179	}
		180	}
		181
		182	static void req_submit (eio_req *req)
		183	{
		184	eio_submit (req);
		185
		186	if (on_next_submit)
		187	{
		188	dSP;
		189	SV *cb = sv_2mortal (on_next_submit);
		190
		191	on_next_submit = 0;
		192
		193	PUSHMARK (SP);
		194	PUTBACK;
		195	call_sv (cb, G_DISCARD | G_EVAL);
		196	}
		197	}
		198
		199	static int req_invoke (eio_req *req)
		200	{
		201	dSP;
		202
		203	if (req->flags & FLAG_SV2_RO_OFF)
		204	SvREADONLY_off (req->sv2);
		205
		206	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		207	{
		208	ENTER;
		209	SAVETMPS;
		210	PUSHMARK (SP);
		211	EXTEND (SP, 1);
		212
		213	switch (req->type)
155	{	214	{
156	dSP;	215	case EIO_READDIR:
		216	{
		217	SV *rv = &PL_sv_undef;
157		218
158	ENTER;	219	if (req->result >= 0)
159	SAVETMPS;	220	{
160	PUSHMARK (SP);	221	int i;
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	222	char *buf = req->ptr2;
162	PUTBACK;	223	AV *av = newAV ();
163	call_sv (grp->fh2, G_VOID | G_EVAL);	224
164	SPAGAIN;	225	av_extend (av, req->result - 1);
165	FREETMPS;	226
166	LEAVE;	227	for (i = 0; i < req->result; ++i)
		228	{
		229	SV *sv = newSVpv (buf, 0);
		230
		231	av_store (av, i, sv);
		232	buf += SvCUR (sv) + 1;
		233	}
		234
		235	rv = sv_2mortal (newRV_noinc ((SV *)av));
		236	}
		237
		238	PUSHs (rv);
		239	}
		240	break;
		241
		242	case EIO_OPEN:
		243	{
		244	/* convert fd to fh */
		245	SV *fh = &PL_sv_undef;
		246
		247	if (req->result >= 0)
		248	{
		249	GV *gv = (GV *)sv_newmortal ();
		250	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		251	char sym [64];
		252	int symlen;
		253
		254	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		255	gv_init (gv, stash, sym, symlen, 0);
		256
		257	symlen = snprintf (
		258	sym,
		259	sizeof (sym),
		260	"%s&=%d",
		261	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		262	req->result
		263	);
		264
		265	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		266	fh = (SV *)gv;
		267	}
		268
		269	PUSHs (fh);
		270	}
		271	break;
		272
		273	case EIO_GROUP:
		274	req->int1 = 2; /* mark group as finished */
		275
		276	if (req->sv1)
		277	{
		278	int i;
		279	AV *av = (AV *)req->sv1;
		280
		281	EXTEND (SP, AvFILL (av) + 1);
		282	for (i = 0; i <= AvFILL (av); ++i)
		283	PUSHs (*av_fetch (av, i, 0));
		284	}
		285	break;
		286
		287	case EIO_NOP:
		288	case EIO_BUSY:
		289	break;
		290
		291	case EIO_READLINK:
		292	if (req->result > 0)
		293	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		294	break;
		295
		296	case EIO_STAT:
		297	case EIO_LSTAT:
		298	case EIO_FSTAT:
		299	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		300	PL_laststatval = req->result;
		301	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		302	PUSHs (sv_2mortal (newSViv (req->result)));
		303	break;
		304
		305	case EIO_READ:
		306	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		307	*SvEND (req->sv2) = 0;
		308	PUSHs (sv_2mortal (newSViv (req->result)));
		309	break;
		310
		311	case EIO_DUP2:
		312	if (req->result > 0)
		313	req->result = 0;
		314	/* FALLTHROUGH */
		315
		316	default:
		317	PUSHs (sv_2mortal (newSViv (req->result)));
		318	break;
167	}	319	}
168		320
169	/* stop if no progress has been made */	321	errno = req->errorno;
170	if (old_len == grp->length)	322
171	{	323	PUTBACK;
172	SvREFCNT_dec (grp->fh2);	324	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
173	grp->fh2 = 0;	325	SPAGAIN;
174	break;	326
175	}	327	FREETMPS;
		328	LEAVE;
		329
		330	PUTBACK;
176	}	331	}
177	}
178		332
179	static void aio_grp_dec (aio_req grp)	333	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	334	}
193		335
194	static void poll_wait ()
195	{
196	while (nreqs)
197	{
198	aio_req req;
199	pthread_mutex_lock (&reslock);
200	req = ress;
201	pthread_mutex_unlock (&reslock);
202
203	if (req)
204	return;
205
206	fd_set rfd;
207	FD_ZERO(&rfd);
208	FD_SET(respipe [0], &rfd);
209
210	select (respipe [0] + 1, &rfd, 0, 0, 0);
211	}
212	}
213
214	static void req_invoke (aio_req req)
215	{
216	dSP;
217	int errorno = errno;
218
219	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
220	return;
221
222	errno = req->errorno;
223
224	ENTER;
225	SAVETMPS;
226	PUSHMARK (SP);
227	EXTEND (SP, 1);
228
229	switch (req->type)
230	{
231	case REQ_READDIR:
232	{
233	SV *rv = &PL_sv_undef;
234
235	if (req->result >= 0)
236	{
237	char *buf = req->data2ptr;
238	AV *av = newAV ();
239
240	while (req->result)
241	{
242	SV *sv = newSVpv (buf, 0);
243
244	av_push (av, sv);
245	buf += SvCUR (sv) + 1;
246	req->result--;
247	}
248
249	rv = sv_2mortal (newRV_noinc ((SV *)av));
250	}
251
252	PUSHs (rv);
253	}
254	break;
255
256	case REQ_OPEN:
257	{
258	/* convert fd to fh */
259	SV *fh;
260
261	PUSHs (sv_2mortal (newSViv (req->result)));
262	PUTBACK;
263	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
264	SPAGAIN;
265
266	fh = SvREFCNT_inc (POPs);
267
268	PUSHMARK (SP);
269	XPUSHs (sv_2mortal (fh));
270	}
271	break;
272
273	case REQ_GROUP:
274	req->fd = 2; /* mark group as finished */
275
276	if (req->data)
277	{
278	int i;
279	AV *av = (AV *)req->data;
280
281	EXTEND (SP, AvFILL (av) + 1);
282	for (i = 0; i <= AvFILL (av); ++i)
283	PUSHs (*av_fetch (av, i, 0));
284	}
285	break;
286
287	case REQ_NOP:
288	case REQ_SLEEP:
289	break;
290
291	default:
292	PUSHs (sv_2mortal (newSViv (req->result)));
293	break;
294	}
295
296
297	PUTBACK;
298	call_sv (req->callback, G_VOID | G_EVAL);
299	SPAGAIN;
300
301	FREETMPS;
302	LEAVE;
303
304	errno = errorno;
305
306	if (SvTRUE (ERRSV))
307	{
308	req_free (req);
309	croak (0);
310	}
311	}
312
313	static void req_free (aio_req req)	336	static void req_destroy (aio_req req)
314	{	337	{
315	if (req->grp)
316	{
317	aio_req grp = req->grp;
318
319	/* unlink request */
320	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
321	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
322
323	if (grp->grp_first == req)
324	grp->grp_first = req->grp_next;
325
326	aio_grp_dec (grp);
327	}
328
329	if (req->self)	338	if (req->self)
330	{	339	{
331	sv_unmagic (req->self, PERL_MAGIC_ext);	340	sv_unmagic (req->self, PERL_MAGIC_ext);
332	SvREFCNT_dec (req->self);	341	SvREFCNT_dec (req->self);
333	}	342	}
334		343
335	SvREFCNT_dec (req->data);
336	SvREFCNT_dec (req->fh);	344	SvREFCNT_dec (req->sv1);
337	SvREFCNT_dec (req->fh2);	345	SvREFCNT_dec (req->sv2);
338	SvREFCNT_dec (req->callback);	346	SvREFCNT_dec (req->callback);
339	Safefree (req->statdata);
340
341	if (req->type == REQ_READDIR && req->result >= 0)
342	free (req->data2ptr);
343		347
344	Safefree (req);	348	Safefree (req);
345	}	349	}
346		350
347	static void req_cancel (aio_req req)	351	static void req_cancel_subs (aio_req grp)
348	{	352	{
349	req->flags |= FLAG_CANCELLED;	353	aio_req sub;
350		354
351	if (req->type == REQ_GROUP)	355	if (grp->type != EIO_GROUP)
		356	return;
		357
		358	SvREFCNT_dec (grp->sv2);
		359	grp->sv2 = 0;
		360
		361	eio_grp_cancel (grp);
		362	}
		363
		364	#ifdef USE_SOCKETS_AS_HANDLES
		365	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		366	#else
		367	# define TO_SOCKET(x) (x)
		368	#endif
		369
		370	static void
		371	create_respipe (void)
		372	{
		373	int old_readfd = respipe [0];
		374
		375	if (respipe [1] >= 0)
		376	respipe_close (TO_SOCKET (respipe [1]));
		377
		378	#ifdef _WIN32
		379	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		380	#else
		381	if (pipe (respipe))
		382	#endif
		383	croak ("unable to initialize result pipe");
		384
		385	if (old_readfd >= 0)
352	{	386	{
353	aio_req sub;	387	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		388	croak ("unable to initialize result pipe(2)");
354		389
355	for (sub = req->grp_first; sub; sub = sub->grp_next)	390	respipe_close (respipe [0]);
356	req_cancel (sub);	391	respipe [0] = old_readfd;
357	}	392	}
358	}
359		393
		394	#ifdef _WIN32
		395	int arg = 1;
		396	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		397	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		398	#else
		399	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		400	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		401	#endif
		402	croak ("unable to initialize result pipe(3)");
		403
		404	respipe_osf [0] = TO_SOCKET (respipe [0]);
		405	respipe_osf [1] = TO_SOCKET (respipe [1]);
		406	}
		407
		408	static void poll_wait (void)
		409	{
		410	fd_set rfd;
		411
		412	while (eio_nreqs ())
		413	{
		414	int size;
		415
		416	X_LOCK (reslock);
		417	size = res_queue.size;
		418	X_UNLOCK (reslock);
		419
		420	if (size)
		421	return;
		422
		423	etp_maybe_start_thread ();
		424
		425	FD_ZERO (&rfd);
		426	FD_SET (respipe [0], &rfd);
		427
		428	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		429	}
		430	}
		431
360	static int poll_cb ()	432	static int poll_cb (void)
361	{	433	{
362	dSP;
363	int count = 0;
364	int do_croak = 0;
365	aio_req req;
366
367	for (;;)	434	for (;;)
368	{	435	{
369	pthread_mutex_lock (&reslock);	436	int res = eio_poll ();
370	req = ress;
371		437
372	if (req)	438	if (res > 0)
373	{
374	ress = req->next;
375
376	if (!ress)
377	{
378	/* read any signals sent by the worker threads */
379	char buf [32];
380	while (read (respipe [0], buf, 32) == 32)
381	;
382
383	rese = 0;
384	}
385	}
386
387	pthread_mutex_unlock (&reslock);
388
389	if (!req)
390	break;	439	croak (0);
391		440
392	--nreqs;	441	if (!max_outstanding || max_outstanding > eio_nreqs ())
		442	return res;
393		443
394	if (req->type == REQ_QUIT)	444	poll_wait ();
395	started--;
396	else if (req->type == REQ_GROUP && req->length)
397	{
398	req->fd = 1; /* mark request as delayed */
399	continue;
400	}
401	else
402	{
403	if (req->type == REQ_READ)
404	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
405
406	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
407	SvREADONLY_off (req->data);
408
409	if (req->statdata)
410	{
411	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
412	PL_laststatval = req->result;
413	PL_statcache = *(req->statdata);
414	}
415
416	req_invoke (req);
417
418	count++;
419	}
420
421	req_free (req);
422	}	445	}
423
424	return count;
425	}
426
427	static void *aio_proc(void *arg);
428
429	static void start_thread (void)
430	{
431	sigset_t fullsigset, oldsigset;
432	pthread_t tid;
433	pthread_attr_t attr;
434
435	pthread_attr_init (&attr);
436	pthread_attr_setstacksize (&attr, STACKSIZE);
437	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
438
439	sigfillset (&fullsigset);
440	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
441
442	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
443	started++;
444
445	sigprocmask (SIG_SETMASK, &oldsigset, 0);
446	}
447
448	static void req_send (aio_req req)
449	{
450	while (started < wanted && nreqs >= started)
451	start_thread ();
452
453	++nreqs;
454
455	pthread_mutex_lock (&reqlock);
456
457	req->next = 0;
458
459	if (reqe)
460	{
461	reqe->next = req;
462	reqe = req;
463	}
464	else
465	reqe = reqs = req;
466
467	pthread_cond_signal (&reqwait);
468	pthread_mutex_unlock (&reqlock);
469
470	if (nreqs > max_outstanding)
471	for (;;)
472	{
473	poll_cb ();
474
475	if (nreqs <= max_outstanding)
476	break;
477
478	poll_wait ();
479	}
480	}
481
482	static void end_thread (void)
483	{
484	aio_req req;
485	Newz (0, req, 1, aio_cb);
486	req->type = REQ_QUIT;
487
488	req_send (req);
489	}
490
491	static void min_parallel (int nthreads)
492	{
493	if (wanted < nthreads)
494	wanted = nthreads;
495	}
496
497	static void max_parallel (int nthreads)
498	{
499	int cur = started;
500
501	if (wanted > nthreads)
502	wanted = nthreads;
503
504	while (cur > wanted)
505	{
506	end_thread ();
507	cur--;
508	}
509
510	while (started > wanted)
511	{
512	poll_wait ();
513	poll_cb ();
514	}
515	}
516
517	static void create_pipe ()
518	{
519	if (pipe (respipe))
520	croak ("unable to initialize result pipe");
521
522	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
523	croak ("cannot set result pipe to nonblocking mode");
524
525	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
526	croak ("cannot set result pipe to nonblocking mode");
527	}
528
529	/*****************************************************************************/
530	/* work around various missing functions */
531
532	#if !HAVE_PREADWRITE
533	# define pread aio_pread
534	# define pwrite aio_pwrite
535
536	/*
537	* make our pread/pwrite safe against themselves, but not against
538	* normal read/write by using a mutex. slows down execution a lot,
539	* but that's your problem, not mine.
540	*/
541	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
542
543	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
544	{
545	ssize_t res;
546	off_t ooffset;
547
548	pthread_mutex_lock (&preadwritelock);
549	ooffset = lseek (fd, 0, SEEK_CUR);
550	lseek (fd, offset, SEEK_SET);
551	res = read (fd, buf, count);
552	lseek (fd, ooffset, SEEK_SET);
553	pthread_mutex_unlock (&preadwritelock);
554
555	return res;
556	}
557
558	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
559	{
560	ssize_t res;
561	off_t ooffset;
562
563	pthread_mutex_lock (&preadwritelock);
564	ooffset = lseek (fd, 0, SEEK_CUR);
565	lseek (fd, offset, SEEK_SET);
566	res = write (fd, buf, count);
567	lseek (fd, offset, SEEK_SET);
568	pthread_mutex_unlock (&preadwritelock);
569
570	return res;
571	}
572	#endif
573
574	#if !HAVE_FDATASYNC
575	# define fdatasync fsync
576	#endif
577
578	#if !HAVE_READAHEAD
579	# define readahead aio_readahead
580
581	static ssize_t readahead (int fd, off_t offset, size_t count)
582	{
583	char readahead_buf[4096];
584
585	while (count > 0)
586	{
587	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
588
589	pread (fd, readahead_buf, len, offset);
590	offset += len;
591	count -= len;
592	}
593
594	errno = 0;
595	}
596	#endif
597
598	#if !HAVE_READDIR_R
599	# define readdir_r aio_readdir_r
600
601	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
602
603	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
604	{
605	struct dirent *e;
606	int errorno;
607
608	pthread_mutex_lock (&readdirlock);
609
610	e = readdir (dirp);
611	errorno = errno;
612
613	if (e)
614	{
615	*res = ent;
616	strcpy (ent->d_name, e->d_name);
617	}
618	else
619	*res = 0;
620
621	pthread_mutex_unlock (&readdirlock);
622
623	errno = errorno;
624	return e ? 0 : -1;
625	}
626	#endif
627
628	/* sendfile always needs emulation */
629	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
630	{
631	ssize_t res;
632
633	if (!count)
634	return 0;
635
636	#if HAVE_SENDFILE
637	# if __linux
638	res = sendfile (ofd, ifd, &offset, count);
639
640	# elif __freebsd
641	/*
642	* Of course, the freebsd sendfile is a dire hack with no thoughts
643	* wasted on making it similar to other I/O functions.
644	*/
645	{
646	off_t sbytes;
647	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
648
649	if (res < 0 && sbytes)
650	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
651	res = sbytes;
652	}
653
654	# elif __hpux
655	res = sendfile (ofd, ifd, offset, count, 0, 0);
656
657	# elif __solaris
658	{
659	struct sendfilevec vec;
660	size_t sbytes;
661
662	vec.sfv_fd = ifd;
663	vec.sfv_flag = 0;
664	vec.sfv_off = offset;
665	vec.sfv_len = count;
666
667	res = sendfilev (ofd, &vec, 1, &sbytes);
668
669	if (res < 0 && sbytes)
670	res = sbytes;
671	}
672
673	# endif
674	#else
675	res = -1;
676	errno = ENOSYS;
677	#endif
678
679	if (res < 0
680	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
681	#if __solaris
682	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
683	#endif
684	)
685	)
686	{
687	/* emulate sendfile. this is a major pain in the ass */
688	char buf[4096];
689	res = 0;
690
691	while (count)
692	{
693	ssize_t cnt;
694
695	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
696
697	if (cnt <= 0)
698	{
699	if (cnt && !res) res = -1;
700	break;
701	}
702
703	cnt = write (ofd, buf, cnt);
704
705	if (cnt <= 0)
706	{
707	if (cnt && !res) res = -1;
708	break;
709	}
710
711	offset += cnt;
712	res += cnt;
713	count -= cnt;
714	}
715	}
716
717	return res;
718	}
719
720	/* read a full directory */
721	static int scandir_ (const char *path, void **namesp)
722	{
723	DIR *dirp = opendir (path);
724	union
725	{
726	struct dirent d;
727	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
728	} u;
729	struct dirent *entp;
730	char *name, *names;
731	int memlen = 4096;
732	int memofs = 0;
733	int res = 0;
734	int errorno;
735
736	if (!dirp)
737	return -1;
738
739	names = malloc (memlen);
740
741	for (;;)
742	{
743	errno = 0, readdir_r (dirp, &u.d, &entp);
744
745	if (!entp)
746	break;
747
748	name = entp->d_name;
749
750	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
751	{
752	int len = strlen (name) + 1;
753
754	res++;
755
756	while (memofs + len > memlen)
757	{
758	memlen *= 2;
759	names = realloc (names, memlen);
760	if (!names)
761	break;
762	}
763
764	memcpy (names + memofs, name, len);
765	memofs += len;
766	}
767	}
768
769	errorno = errno;
770	closedir (dirp);
771
772	if (errorno)
773	{
774	free (names);
775	errno = errorno;
776	res = -1;
777	}
778
779	*namesp = (void *)names;
780	return res;
781	}
782
783	/*****************************************************************************/
784
785	static void *aio_proc (void *thr_arg)
786	{
787	aio_req req;
788	int type;
789
790	do
791	{
792	pthread_mutex_lock (&reqlock);
793
794	for (;;)
795	{
796	req = reqs;
797
798	if (reqs)
799	{
800	reqs = reqs->next;
801	if (!reqs) reqe = 0;
802	}
803
804	if (req)
805	break;
806
807	pthread_cond_wait (&reqwait, &reqlock);
808	}
809
810	pthread_mutex_unlock (&reqlock);
811
812	errno = 0; /* strictly unnecessary */
813	type = req->type; /* remember type for QUIT check */
814
815	if (!(req->flags & FLAG_CANCELLED))
816	switch (type)
817	{
818	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
819	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
820
821	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
822	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
823
824	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
825	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
826	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
827
828	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
829	case REQ_CLOSE: req->result = close (req->fd); break;
830	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
831	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
832	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
833	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
834	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
835
836	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
837	case REQ_FSYNC: req->result = fsync (req->fd); break;
838	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
839
840	case REQ_SLEEP:
841	{
842	struct timeval tv;
843
844	tv.tv_sec = req->fd;
845	tv.tv_usec = req->fd2;
846
847	req->result = select (0, 0, 0, 0, &tv);
848	}
849
850	case REQ_GROUP:
851	case REQ_NOP:
852	case REQ_QUIT:
853	break;
854
855	default:
856	req->result = ENOSYS;
857	break;
858	}
859
860	req->errorno = errno;
861
862	pthread_mutex_lock (&reslock);
863
864	req->next = 0;
865
866	if (rese)
867	{
868	rese->next = req;
869	rese = req;
870	}
871	else
872	{
873	rese = ress = req;
874
875	/* write a dummy byte to the pipe so fh becomes ready */
876	write (respipe [1], &respipe, 1);
877	}
878
879	pthread_mutex_unlock (&reslock);
880	}
881	while (type != REQ_QUIT);
882
883	return 0;
884	}
885
886	/*****************************************************************************/
887
888	static void atfork_prepare (void)
889	{
890	pthread_mutex_lock (&reqlock);
891	pthread_mutex_lock (&reslock);
892	#if !HAVE_PREADWRITE
893	pthread_mutex_lock (&preadwritelock);
894	#endif
895	#if !HAVE_READDIR_R
896	pthread_mutex_lock (&readdirlock);
897	#endif
898	}
899
900	static void atfork_parent (void)
901	{
902	#if !HAVE_READDIR_R
903	pthread_mutex_unlock (&readdirlock);
904	#endif
905	#if !HAVE_PREADWRITE
906	pthread_mutex_unlock (&preadwritelock);
907	#endif
908	pthread_mutex_unlock (&reslock);
909	pthread_mutex_unlock (&reqlock);
910	}	446	}
911		447
912	static void atfork_child (void)	448	static void atfork_child (void)
913	{	449	{
914	aio_req prv;
915
916	started = 0;
917
918	while (reqs)
919	{
920	prv = reqs;
921	reqs = prv->next;
922	req_free (prv);
923	}
924
925	reqs = reqe = 0;
926
927	while (ress)
928	{
929	prv = ress;
930	ress = prv->next;
931	req_free (prv);
932	}
933
934	ress = rese = 0;
935
936	close (respipe [0]);
937	close (respipe [1]);
938	create_pipe ();	450	create_respipe ();
939
940	atfork_parent ();
941	}	451	}
942		452
943	#define dREQ \	453	#define dREQ \
944	aio_req req; \	454	aio_req req; \
945	int req_pri = next_pri; \	455	int req_pri = next_pri; \
946	next_pri = DEFAULT_PRI + PRI_BIAS; \	456	next_pri = EIO_PRI_DEFAULT; \
947	\	457	\
948	if (SvOK (callback) && !SvROK (callback)) \	458	if (SvOK (callback) && !SvROK (callback)) \
949	croak ("callback must be undef or of reference type"); \	459	croak ("callback must be undef or of reference type"); \
950	\	460	\
951	Newz (0, req, 1, aio_cb); \	461	Newz (0, req, 1, eio_req); \
952	if (!req) \	462	if (!req) \
953	croak ("out of memory during aio_req allocation"); \	463	croak ("out of memory during eio_req allocation"); \
954	\	464	\
955	req->callback = newSVsv (callback); \	465	req->callback = newSVsv (callback); \
956	req->pri = req_pri	466	req->pri = req_pri
957		467
958	#define REQ_SEND \	468	#define REQ_SEND \
959	req_send (req); \	469	req_submit (req); \
960	\	470	\
961	if (GIMME_V != G_VOID) \	471	if (GIMME_V != G_VOID) \
962	XPUSHs (req_sv (req, AIO_REQ_KLASS));	472	XPUSHs (req_sv (req, AIO_REQ_KLASS));
963		473
964	MODULE = IO::AIO PACKAGE = IO::AIO	474	MODULE = IO::AIO PACKAGE = IO::AIO
965		475
966	PROTOTYPES: ENABLE	476	PROTOTYPES: ENABLE
967		477
968	BOOT:	478	BOOT:
969	{	479	{
970	HV *stash = gv_stashpv ("IO::AIO", 1);	480	stash = gv_stashpv ("IO::AIO", 1);
		481
971	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	482	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
972	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	483	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
973	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	484	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		485	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		486	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		487	#ifndef _WIN32
		488	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		489	#endif
974		490
975	create_pipe ();	491	create_respipe ();
976	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
977	}
978		492
		493	if (eio_init (want_poll, done_poll) < 0)
		494	croak ("IO::AIO: unable to initialise eio library");
		495
		496	/* atfork child called in fifo order, so before eio's handler */
		497	X_THREAD_ATFORK (0, 0, atfork_child);
		498	}
		499
979	void	500	void
980	min_parallel (nthreads)	501	max_poll_reqs (int nreqs)
981	int nthreads
982	PROTOTYPE: $	502	PROTOTYPE: $
		503	CODE:
		504	eio_set_max_poll_reqs (nreqs);
983		505
984	void	506	void
985	max_parallel (nthreads)	507	max_poll_time (double nseconds)
986	int nthreads
987	PROTOTYPE: $	508	PROTOTYPE: $
988
989	int
990	max_outstanding (nreqs)
991	int nreqs
992	PROTOTYPE: $
993	CODE:	509	CODE:
994	RETVAL = max_outstanding;	510	eio_set_max_poll_time (nseconds);
		511
		512	void
		513	min_parallel (int nthreads)
		514	PROTOTYPE: $
		515	CODE:
		516	eio_set_min_parallel (nthreads);
		517
		518	void
		519	max_parallel (int nthreads)
		520	PROTOTYPE: $
		521	CODE:
		522	eio_set_max_parallel (nthreads);
		523
		524	void
		525	max_idle (int nthreads)
		526	PROTOTYPE: $
		527	CODE:
		528	eio_set_max_idle (nthreads);
		529
		530	void
		531	max_outstanding (int maxreqs)
		532	PROTOTYPE: $
		533	CODE:
995	max_outstanding = nreqs;	534	max_outstanding = maxreqs;
996		535
997	void	536	void
998	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	537	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
999	SV * pathname
1000	int flags
1001	int mode
1002	SV * callback
1003	PROTOTYPE: $$$;$	538	PROTOTYPE: $$$;$
1004	PPCODE:	539	PPCODE:
1005	{	540	{
1006	dREQ;	541	dREQ;
1007		542
1008	req->type = REQ_OPEN;	543	req->type = EIO_OPEN;
1009	req->data = newSVsv (pathname);	544	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	545	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011	req->fd = flags;	546	req->int1 = flags;
1012	req->mode = mode;	547	req->int2 = mode;
1013		548
1014	REQ_SEND;	549	REQ_SEND;
1015	}	550	}
1016		551
1017	void	552	void
1018	aio_close (fh,callback=&PL_sv_undef)	553	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1019	SV * fh
1020	SV * callback
1021	PROTOTYPE: $;$	554	PROTOTYPE: $;$
1022	ALIAS:	555	ALIAS:
1023	aio_close = REQ_CLOSE
1024	aio_fsync = REQ_FSYNC	556	aio_fsync = EIO_FSYNC
1025	aio_fdatasync = REQ_FDATASYNC	557	aio_fdatasync = EIO_FDATASYNC
1026	PPCODE:	558	PPCODE:
1027	{	559	{
1028	dREQ;	560	dREQ;
1029		561
1030	req->type = ix;	562	req->type = ix;
1031	req->fh = newSVsv (fh);	563	req->sv1 = newSVsv (fh);
1032	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1033		565
1034	REQ_SEND (req);	566	REQ_SEND (req);
1035	}	567	}
1036		568
1037	void	569	void
		570	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		571	PROTOTYPE: $;$
		572	PPCODE:
		573	{
		574	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		575	dREQ;
		576
		577	if (close_pipe < 0)
		578	{
		579	int pipefd [2];
		580
		581	if (pipe (pipefd) < 0
		582	|| close (pipefd [1]) < 0
		583	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		584	abort (); /*D*/
		585
		586	close_pipe = pipefd [0];
		587	}
		588
		589	req->type = EIO_DUP2;
		590	req->int1 = close_pipe;
		591	req->sv2 = newSVsv (fh);
		592	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		593
		594	REQ_SEND (req);
		595	}
		596
		597	void
1038	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	598	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1039	SV * fh
1040	UV offset
1041	UV length
1042	SV * data
1043	UV dataoffset
1044	SV * callback
1045	ALIAS:	599	ALIAS:
1046	aio_read = REQ_READ	600	aio_read = EIO_READ
1047	aio_write = REQ_WRITE	601	aio_write = EIO_WRITE
1048	PROTOTYPE: $$$$$;$	602	PROTOTYPE: $$$$$;$
1049	PPCODE:	603	PPCODE:
1050	{	604	{
1051	aio_req req;
1052	STRLEN svlen;	605	STRLEN svlen;
1053	char *svptr = SvPVbyte (data, svlen);	606	char *svptr = SvPVbyte (data, svlen);
		607	UV len = SvUV (length);
1054		608
1055	SvUPGRADE (data, SVt_PV);	609	SvUPGRADE (data, SVt_PV);
1056	SvPOK_on (data);	610	SvPOK_on (data);
1057		611
1058	if (dataoffset < 0)	612	if (dataoffset < 0)
1059	dataoffset += svlen;	613	dataoffset += svlen;
1060		614
1061	if (dataoffset < 0 || dataoffset > svlen)	615	if (dataoffset < 0 || dataoffset > svlen)
1062	croak ("data offset outside of string");	616	croak ("dataoffset outside of data scalar");
1063		617
1064	if (ix == REQ_WRITE)	618	if (ix == EIO_WRITE)
1065	{	619	{
1066	/* write: check length and adjust. */	620	/* write: check length and adjust. */
1067	if (length < 0 || length + dataoffset > svlen)	621	if (!SvOK (length) || len + dataoffset > svlen)
1068	length = svlen - dataoffset;	622	len = svlen - dataoffset;
1069	}	623	}
1070	else	624	else
1071	{	625	{
1072	/* read: grow scalar as necessary */	626	/* read: grow scalar as necessary */
1073	svptr = SvGROW (data, length + dataoffset);	627	svptr = SvGROW (data, len + dataoffset + 1);
1074	}	628	}
1075		629
1076	if (length < 0)	630	if (len < 0)
1077	croak ("length must not be negative");	631	croak ("length must not be negative");
1078		632
1079	{	633	{
1080	dREQ;	634	dREQ;
1081		635
1082	req->type = ix;	636	req->type = ix;
1083	req->fh = newSVsv (fh);	637	req->sv1 = newSVsv (fh);
1084	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	638	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1085	: IoOFP (sv_2io (fh)));	639	: IoOFP (sv_2io (fh)));
		640	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1086	req->offset = offset;	641	req->size = len;
1087	req->length = length;
1088	req->data = SvREFCNT_inc (data);	642	req->sv2 = SvREFCNT_inc (data);
1089	req->dataptr = (char *)svptr + dataoffset;	643	req->ptr2 = (char *)svptr + dataoffset;
		644	req->stroffset = dataoffset;
1090		645
1091	if (!SvREADONLY (data))	646	if (!SvREADONLY (data))
1092	{	647	{
1093	SvREADONLY_on (data);	648	SvREADONLY_on (data);
1094	req->data2ptr = (void *)data;	649	req->flags |= FLAG_SV2_RO_OFF;
1095	}	650	}
1096		651
1097	REQ_SEND;	652	REQ_SEND;
1098	}	653	}
1099	}	654	}
1100		655
1101	void	656	void
		657	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		658	PROTOTYPE: $$;$
		659	PPCODE:
		660	{
		661	SV *data;
		662	dREQ;
		663
		664	req->type = EIO_READLINK;
		665	req->sv1 = newSVsv (path);
		666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		667
		668	REQ_SEND;
		669	}
		670
		671	void
1102	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	672	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1103	SV * out_fh
1104	SV * in_fh
1105	UV in_offset
1106	UV length
1107	SV * callback
1108	PROTOTYPE: $$$$;$	673	PROTOTYPE: $$$$;$
1109	PPCODE:	674	PPCODE:
1110	{	675	{
1111	dREQ;	676	dREQ;
1112		677
1113	req->type = REQ_SENDFILE;	678	req->type = EIO_SENDFILE;
1114	req->fh = newSVsv (out_fh);	679	req->sv1 = newSVsv (out_fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	680	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1116	req->fh2 = newSVsv (in_fh);	681	req->sv2 = newSVsv (in_fh);
1117	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	682	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1118	req->offset = in_offset;	683	req->offs = SvVAL64 (in_offset);
1119	req->length = length;	684	req->size = length;
1120		685
1121	REQ_SEND;	686	REQ_SEND;
1122	}	687	}
1123		688
1124	void	689	void
1125	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	690	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1126	SV * fh
1127	UV offset
1128	IV length
1129	SV * callback
1130	PROTOTYPE: $$$;$	691	PROTOTYPE: $$$;$
1131	PPCODE:	692	PPCODE:
1132	{	693	{
1133	dREQ;	694	dREQ;
1134		695
1135	req->type = REQ_READAHEAD;	696	req->type = EIO_READAHEAD;
1136	req->fh = newSVsv (fh);	697	req->sv1 = newSVsv (fh);
1137	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	698	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1138	req->offset = offset;	699	req->offs = SvVAL64 (offset);
1139	req->length = length;	700	req->size = length;
1140		701
1141	REQ_SEND;	702	REQ_SEND;
1142	}	703	}
1143		704
1144	void	705	void
1145	aio_stat (fh_or_path,callback=&PL_sv_undef)	706	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1146	SV * fh_or_path
1147	SV * callback
1148	ALIAS:	707	ALIAS:
1149	aio_stat = REQ_STAT	708	aio_stat = EIO_STAT
1150	aio_lstat = REQ_LSTAT	709	aio_lstat = EIO_LSTAT
1151	PPCODE:	710	PPCODE:
1152	{	711	{
1153	dREQ;	712	dREQ;
1154		713
1155	New (0, req->statdata, 1, Stat_t);	714	req->sv1 = newSVsv (fh_or_path);
1156	if (!req->statdata)
1157	{
1158	req_free (req);
1159	croak ("out of memory during aio_req->statdata allocation");
1160	}
1161		715
1162	if (SvPOK (fh_or_path))	716	if (SvPOK (req->sv1))
1163	{	717	{
1164	req->type = ix;	718	req->type = ix;
1165	req->data = newSVsv (fh_or_path);
1166	req->dataptr = SvPVbyte_nolen (req->data);	719	req->ptr1 = SvPVbyte_nolen (req->sv1);
1167	}	720	}
1168	else	721	else
1169	{	722	{
1170	req->type = REQ_FSTAT;	723	req->type = EIO_FSTAT;
1171	req->fh = newSVsv (fh_or_path);
1172	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1173	}	725	}
1174		726
1175	REQ_SEND;	727	REQ_SEND;
1176	}	728	}
1177		729
1178	void	730	void
		731	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		732	PPCODE:
		733	{
		734	dREQ;
		735
		736	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		737	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		738	req->sv1 = newSVsv (fh_or_path);
		739
		740	if (SvPOK (req->sv1))
		741	{
		742	req->type = EIO_UTIME;
		743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		744	}
		745	else
		746	{
		747	req->type = EIO_FUTIME;
		748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		749	}
		750
		751	REQ_SEND;
		752	}
		753
		754	void
		755	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		756	PPCODE:
		757	{
		758	dREQ;
		759
		760	req->sv1 = newSVsv (fh_or_path);
		761	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		762
		763	if (SvPOK (req->sv1))
		764	{
		765	req->type = EIO_TRUNCATE;
		766	req->ptr1 = SvPVbyte_nolen (req->sv1);
		767	}
		768	else
		769	{
		770	req->type = EIO_FTRUNCATE;
		771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		772	}
		773
		774	REQ_SEND;
		775	}
		776
		777	void
		778	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		779	ALIAS:
		780	aio_chmod = EIO_CHMOD
		781	aio_mkdir = EIO_MKDIR
		782	PPCODE:
		783	{
		784	dREQ;
		785
		786	req->int2 = mode;
		787	req->sv1 = newSVsv (fh_or_path);
		788
		789	if (SvPOK (req->sv1))
		790	{
		791	req->type = ix;
		792	req->ptr1 = SvPVbyte_nolen (req->sv1);
		793	}
		794	else
		795	{
		796	req->type = EIO_FCHMOD;
		797	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		798	}
		799
		800	REQ_SEND;
		801	}
		802
		803	void
		804	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		805	PPCODE:
		806	{
		807	dREQ;
		808
		809	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		810	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		811	req->sv1 = newSVsv (fh_or_path);
		812
		813	if (SvPOK (req->sv1))
		814	{
		815	req->type = EIO_CHOWN;
		816	req->ptr1 = SvPVbyte_nolen (req->sv1);
		817	}
		818	else
		819	{
		820	req->type = EIO_FCHOWN;
		821	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		822	}
		823
		824	REQ_SEND;
		825	}
		826
		827	void
1179	aio_unlink (pathname,callback=&PL_sv_undef)	828	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1180	SV * pathname
1181	SV * callback
1182	ALIAS:	829	ALIAS:
1183	aio_unlink = REQ_UNLINK	830	aio_unlink = EIO_UNLINK
1184	aio_rmdir = REQ_RMDIR	831	aio_rmdir = EIO_RMDIR
1185	aio_readdir = REQ_READDIR	832	aio_readdir = EIO_READDIR
1186	PPCODE:	833	PPCODE:
1187	{	834	{
1188	dREQ;	835	dREQ;
1189		836
1190	req->type = ix;	837	req->type = ix;
1191	req->data = newSVsv (pathname);	838	req->sv1 = newSVsv (pathname);
1192	req->dataptr = SvPVbyte_nolen (req->data);	839	req->ptr1 = SvPVbyte_nolen (req->sv1);
		840
		841	REQ_SEND;
		842	}
		843
		844	void
		845	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		846	ALIAS:
		847	aio_link = EIO_LINK
		848	aio_symlink = EIO_SYMLINK
		849	aio_rename = EIO_RENAME
		850	PPCODE:
		851	{
		852	dREQ;
		853
		854	req->type = ix;
		855	req->sv1 = newSVsv (oldpath);
		856	req->ptr1 = SvPVbyte_nolen (req->sv1);
		857	req->sv2 = newSVsv (newpath);
		858	req->ptr2 = SvPVbyte_nolen (req->sv2);
1193		859
1194	REQ_SEND;	860	REQ_SEND;
1195	}	861	}
1196		862
1197	void	863	void
1198	aio_link (oldpath,newpath,callback=&PL_sv_undef)	864	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1199	SV * oldpath
1200	SV * newpath
1201	SV * callback
1202	ALIAS:
1203	aio_link = REQ_LINK
1204	aio_symlink = REQ_SYMLINK
1205	aio_rename = REQ_RENAME
1206	PPCODE:	865	PPCODE:
1207	{	866	{
1208	dREQ;	867	dREQ;
1209		868
1210	req->type = ix;	869	req->type = EIO_MKNOD;
1211	req->fh = newSVsv (oldpath);	870	req->sv1 = newSVsv (pathname);
1212	req->data2ptr = SvPVbyte_nolen (req->fh);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1213	req->data = newSVsv (newpath);	872	req->int2 = (mode_t)mode;
1214	req->dataptr = SvPVbyte_nolen (req->data);	873	req->offs = dev;
1215		874
1216	REQ_SEND;	875	REQ_SEND;
1217	}	876	}
1218		877
1219	void	878	void
1220	aio_sleep (delay,callback=&PL_sv_undef)	879	aio_busy (double delay, SV *callback=&PL_sv_undef)
1221	double delay
1222	SV * callback
1223	PPCODE:	880	PPCODE:
1224	{	881	{
1225	dREQ;	882	dREQ;
1226		883
1227	req->type = REQ_SLEEP;	884	req->type = EIO_BUSY;
1228	req->fd = delay < 0. ? 0 : delay;	885	req->nv1 = delay < 0. ? 0. : delay;
1229	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1230		886
1231	REQ_SEND;	887	REQ_SEND;
1232	}	888	}
1233		889
1234	void	890	void
1235	aio_group (callback=&PL_sv_undef)	891	aio_group (SV *callback=&PL_sv_undef)
1236	SV * callback
1237	PROTOTYPE: ;$	892	PROTOTYPE: ;$
1238	PPCODE:	893	PPCODE:
1239	{	894	{
1240	dREQ;	895	dREQ;
1241		896
1242	req->type = REQ_GROUP;	897	req->type = EIO_GROUP;
		898
1243	req_send (req);	899	eio_submit (req);
1244
1245	XPUSHs (req_sv (req, AIO_GRP_KLASS));	900	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1246	}	901	}
1247		902
1248	void	903	void
1249	aio_nop (callback=&PL_sv_undef)	904	aio_nop (SV *callback=&PL_sv_undef)
1250	SV * callback	905	ALIAS:
		906	aio_nop = EIO_NOP
		907	aio_sync = EIO_SYNC
1251	PPCODE:	908	PPCODE:
1252	{	909	{
1253	dREQ;	910	dREQ;
1254		911
1255	req->type = REQ_NOP;	912	req->type = ix;
1256		913
1257	REQ_SEND;	914	REQ_SEND;
1258	}	915	}
1259		916
1260	#if 0	917	int
1261		918	aioreq_pri (int pri = 0)
1262	void	919	PROTOTYPE: ;$
1263	aio_pri (int pri = DEFAULT_PRI)
1264	CODE:	920	CODE:
		921	RETVAL = next_pri;
		922	if (items > 0)
		923	{
1265	if (pri > PRI_MIN) pri = PRI_MIN;	924	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1266	if (pri < PRI_MAX) pri = PRI_MAX;	925	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1267	next_pri = pri + PRI_BIAS;	926	next_pri = pri;
		927	}
		928	OUTPUT:
		929	RETVAL
1268		930
1269	#endif	931	void
		932	aioreq_nice (int nice = 0)
		933	CODE:
		934	nice = next_pri - nice;
		935	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		936	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		937	next_pri = nice;
1270		938
1271	void	939	void
1272	flush ()	940	flush ()
1273	PROTOTYPE:	941	PROTOTYPE:
1274	CODE:	942	CODE:
1275	while (nreqs)	943	while (eio_nreqs ())
1276	{	944	{
1277	poll_wait ();	945	poll_wait ();
1278	poll_cb ();	946	poll_cb ();
1279	}	947	}
1280		948
1281	void	949	int
1282	poll()	950	poll()
1283	PROTOTYPE:	951	PROTOTYPE:
1284	CODE:	952	CODE:
1285	if (nreqs)
1286	{
1287	poll_wait ();	953	poll_wait ();
1288	poll_cb ();	954	RETVAL = poll_cb ();
1289	}	955	OUTPUT:
		956	RETVAL
1290		957
1291	int	958	int
1292	poll_fileno()	959	poll_fileno()
1293	PROTOTYPE:	960	PROTOTYPE:
1294	CODE:	961	CODE:
…		…
1306		973
1307	void	974	void
1308	poll_wait()	975	poll_wait()
1309	PROTOTYPE:	976	PROTOTYPE:
1310	CODE:	977	CODE:
1311	if (nreqs)
1312	poll_wait ();	978	poll_wait ();
1313		979
1314	int	980	int
1315	nreqs()	981	nreqs()
1316	PROTOTYPE:	982	PROTOTYPE:
1317	CODE:	983	CODE:
1318	RETVAL = nreqs;	984	RETVAL = eio_nreqs ();
1319	OUTPUT:	985	OUTPUT:
1320	RETVAL	986	RETVAL
1321		987
		988	int
		989	nready()
		990	PROTOTYPE:
		991	CODE:
		992	RETVAL = eio_nready ();
		993	OUTPUT:
		994	RETVAL
		995
		996	int
		997	npending()
		998	PROTOTYPE:
		999	CODE:
		1000	RETVAL = eio_npending ();
		1001	OUTPUT:
		1002	RETVAL
		1003
		1004	int
		1005	nthreads()
		1006	PROTOTYPE:
		1007	CODE:
		1008	RETVAL = eio_nthreads ();
		1009	OUTPUT:
		1010	RETVAL
		1011
		1012	void _on_next_submit (SV *cb)
		1013	CODE:
		1014	SvREFCNT_dec (on_next_submit);
		1015	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1016
1322	PROTOTYPES: DISABLE	1017	PROTOTYPES: DISABLE
1323		1018
1324	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1019	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1325		1020
1326	void	1021	void
1327	cancel (aio_req_ornot req)	1022	cancel (aio_req_ornot req)
1328	PROTOTYPE:
1329	CODE:	1023	CODE:
1330	req_cancel (req);	1024	eio_cancel (req);
1331		1025
1332	void	1026	void
1333	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1027	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1334	CODE:	1028	CODE:
1335	SvREFCNT_dec (req->callback);	1029	SvREFCNT_dec (req->callback);
…		…
1340	void	1034	void
1341	add (aio_req grp, ...)	1035	add (aio_req grp, ...)
1342	PPCODE:	1036	PPCODE:
1343	{	1037	{
1344	int i;	1038	int i;
1345	aio_req req;
1346		1039
1347	if (grp->fd == 2)	1040	if (grp->int1 == 2)
1348	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1041	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1349		1042
1350	for (i = 1; i < items; ++i )	1043	for (i = 1; i < items; ++i )
1351	{	1044	{
		1045	aio_req req;
		1046
1352	if (GIMME_V != G_VOID)	1047	if (GIMME_V != G_VOID)
1353	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1048	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1354		1049
1355	req = SvAIO_REQ (ST (i));	1050	req = SvAIO_REQ (ST (i));
1356		1051
1357	if (req)	1052	if (req)
1358	{	1053	eio_grp_add (grp, req);
1359	++grp->length;
1360	req->grp = grp;
1361
1362	req->grp_prev = 0;
1363	req->grp_next = grp->grp_first;
1364
1365	if (grp->grp_first)
1366	grp->grp_first->grp_prev = req;
1367
1368	grp->grp_first = req;
1369	}	1054	}
1370	}
1371	}	1055	}
		1056
		1057	void
		1058	cancel_subs (aio_req_ornot req)
		1059	CODE:
		1060	req_cancel_subs (req);
1372		1061
1373	void	1062	void
1374	result (aio_req grp, ...)	1063	result (aio_req grp, ...)
1375	CODE:	1064	CODE:
1376	{	1065	{
1377	int i;	1066	int i;
		1067	AV *av;
		1068
		1069	grp->errorno = errno;
		1070
1378	AV *av = newAV ();	1071	av = newAV ();
1379		1072
1380	for (i = 1; i < items; ++i )	1073	for (i = 1; i < items; ++i )
1381	av_push (av, newSVsv (ST (i)));	1074	av_push (av, newSVsv (ST (i)));
1382		1075
1383	SvREFCNT_dec (grp->data);	1076	SvREFCNT_dec (grp->sv1);
1384	grp->data = (SV *)av;	1077	grp->sv1 = (SV *)av;
1385	}	1078	}
1386		1079
1387	void	1080	void
		1081	errno (aio_req grp, int errorno = errno)
		1082	CODE:
		1083	grp->errorno = errorno;
		1084
		1085	void
1388	feed_limit (aio_req grp, int limit)	1086	limit (aio_req grp, int limit)
1389	CODE:	1087	CODE:
1390	grp->fd2 = limit;	1088	eio_grp_limit (grp, limit);
1391	aio_grp_feed (grp);
1392		1089
1393	void	1090	void
1394	feed (aio_req grp, SV *callback=&PL_sv_undef)	1091	feed (aio_req grp, SV *callback=&PL_sv_undef)
1395	CODE:	1092	CODE:
1396	{	1093	{
1397	SvREFCNT_dec (grp->fh2);	1094	SvREFCNT_dec (grp->sv2);
1398	grp->fh2 = newSVsv (callback);	1095	grp->sv2 = newSVsv (callback);
1399		1096
1400	if (grp->fd2 <= 0)	1097	if (grp->int2 <= 0)
1401	grp->fd2 = 2;	1098	grp->int2 = 2;
1402		1099
1403	aio_grp_feed (grp);	1100	eio_grp_limit (grp, grp->int2);
1404	}	1101	}
1405		1102

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