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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC vs.
Revision 1.118 by root, Sun May 11 00:01:03 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	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536
59
60	#define dBUF \
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64
65	#define fBUF free (aio_buf)
66
67	enum {
68	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};
80		81
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		84
84	typedef struct aio_cb	85	#define EIO_COMMON \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	86	SV *callback; \
89	SV *fh, *fh2;	87	SV *sv1, *sv2; \
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;	88	STRLEN stroffset; \
97	int type;	89	SV *self
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		90
102	unsigned char flags;	91	#include "libeio/eio.h"
103	unsigned char pri;
104		92
105	SV *self; /* the perl counterpart of this request, if any */	93	static int req_invoke (eio_req *req);
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94	#define EIO_FINISH(req) req_invoke (req)
107	} aio_cb;	95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
108		99
109	enum {	100	enum {
110	FLAG_CANCELLED = 0x01,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	102	};
112		103
		104	#include "libeio/eio.c"
		105
113	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
115		108
116	enum {	109	static SV *on_next_submit;
117	PRI_MIN = -4,
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};
124
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	110	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
126
127	static int started, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;	111	static int max_outstanding;
130	static int respipe [2];
131		112
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137		114
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	115	static void req_destroy (aio_req req);
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141
142	/*
143	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.
146	*/
147	typedef struct {
148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149	int size;
150	} reqq;
151
152	static reqq req_queue;
153	static reqq res_queue;
154
155	int reqq_push (reqq *q, aio_req req)
156	{
157	int pri = req->pri;
158	req->next = 0;
159
160	if (q->qe[pri])
161	{
162	q->qe[pri]->next = req;
163	q->qe[pri] = req;
164	}
165	else
166	q->qe[pri] = q->qs[pri] = req;
167
168	return q->size++;
169	}
170
171	aio_req reqq_shift (reqq *q)
172	{
173	int pri;
174
175	if (!q->size)
176	return 0;
177
178	--q->size;
179
180	for (pri = NUM_PRI; pri--; )
181	{
182	aio_req req = q->qs[pri];
183
184	if (req)
185	{
186	if (!(q->qs[pri] = req->next))
187	q->qe[pri] = 0;
188
189	return req;
190	}
191	}
192
193	abort ();
194	}
195
196	static void req_invoke (aio_req req);	116	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
198		131
199	/* must be called at most once */	132	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
201	{	134	{
202	if (!req->self)	135	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	154	}
222		155
223	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
224	{	157	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	158	if (grp->sv2 && SvOK (grp->sv2))
226	{	159	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	160	dSP;
232		161
233	ENTER;	162	ENTER;
234	SAVETMPS;	163	SAVETMPS;
235	PUSHMARK (SP);	164	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	166	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	168	SPAGAIN;
240	FREETMPS;	169	FREETMPS;
241	LEAVE;	170	LEAVE;
242	}
243
244	/* stop if no progress has been made */
245	if (old_len == grp->length)
246	{
247	SvREFCNT_dec (grp->fh2);
248	grp->fh2 = 0;
249	break;
250	}
251	}	171	}
252	}	172	}
253		173
254	static void aio_grp_dec (aio_req grp)	174	static void req_submit (eio_req *req)
255	{	175	{
256	--grp->length;	176	eio_submit (req);
257		177
258	/* call feeder, if applicable */	178	if (on_next_submit)
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	179	{
264	req_invoke (grp);	180	dSP;
265	req_free (grp);	181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
266	}	188	}
267	}	189	}
268		190
269	static void poll_wait ()	191	static int req_invoke (eio_req *req)
270	{	192	{
271	fd_set rfd;	193	dSP;
272		194
273	while (nreqs)	195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
		197
		198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
274	{	199	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)
295	{
296	dSP;
297
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{
300	errno = req->errorno;
301
302	ENTER;	200	ENTER;
303	SAVETMPS;	201	SAVETMPS;
304	PUSHMARK (SP);	202	PUSHMARK (SP);
305	EXTEND (SP, 1);	203	EXTEND (SP, 1);
306		204
307	switch (req->type)	205	switch (req->type)
308	{	206	{
309	case REQ_READDIR:	207	case EIO_READDIR:
310	{	208	{
311	SV *rv = &PL_sv_undef;	209	SV *rv = &PL_sv_undef;
312		210
313	if (req->result >= 0)	211	if (req->result >= 0)
314	{	212	{
		213	int i;
315	char *buf = req->data2ptr;	214	char *buf = req->ptr2;
316	AV *av = newAV ();	215	AV *av = newAV ();
317		216
318	while (req->result)	217	av_extend (av, req->result - 1);
		218
		219	for (i = 0; i < req->result; ++i)
319	{	220	{
320	SV *sv = newSVpv (buf, 0);	221	SV *sv = newSVpv (buf, 0);
321		222
322	av_push (av, sv);	223	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	224	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	225	}
326		226
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	227	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	228	}
329		229
330	PUSHs (rv);	230	PUSHs (rv);
331	}	231	}
332	break;	232	break;
333		233
334	case REQ_OPEN:	234	case EIO_OPEN:
335	{	235	{
336	/* convert fd to fh */	236	/* convert fd to fh */
337	SV *fh;	237	SV *fh = &PL_sv_undef;
338		238
339	PUSHs (sv_2mortal (newSViv (req->result)));	239	if (req->result >= 0)
340	PUTBACK;	240	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	241	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
343		248
344	fh = SvREFCNT_inc (POPs);	249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
345		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
346	PUSHMARK (SP);	261	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	262	}
349	break;	263	break;
350		264
351	case REQ_GROUP:	265	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	266	req->int1 = 2; /* mark group as finished */
353		267
354	if (req->data)	268	if (req->sv1)
355	{	269	{
356	int i;	270	int i;
357	AV *av = (AV *)req->data;	271	AV *av = (AV *)req->sv1;
358		272
359	EXTEND (SP, AvFILL (av) + 1);	273	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	274	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	275	PUSHs (*av_fetch (av, i, 0));
362	}	276	}
363	break;	277	break;
364		278
365	case REQ_NOP:	279	case EIO_NOP:
366	case REQ_SLEEP:	280	case EIO_BUSY:
367	break;	281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	{
		286	SvCUR_set (req->sv2, req->result);
		287	*SvEND (req->sv2) = 0;
		288	PUSHs (req->sv2);
		289	}
		290	break;
		291
		292	case EIO_STAT:
		293	case EIO_LSTAT:
		294	case EIO_FSTAT:
		295	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		296	PL_laststatval = req->result;
		297	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		298	PUSHs (sv_2mortal (newSViv (req->result)));
		299	break;
		300
		301	case EIO_READ:
		302	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		303	*SvEND (req->sv2) = 0;
		304	PUSHs (sv_2mortal (newSViv (req->result)));
		305	break;
		306
		307	case EIO_DUP2:
		308	if (req->result > 0)
		309	req->result = 0;
		310	/* FALLTHROUGH */
368		311
369	default:	312	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	313	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	314	break;
372	}	315	}
373		316
		317	errno = req->errorno;
374		318
375	PUTBACK;	319	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	320	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	321	SPAGAIN;
378		322
379	FREETMPS;	323	FREETMPS;
380	LEAVE;	324	LEAVE;
		325
		326	PUTBACK;
381	}	327	}
382		328
383	if (req->grp)	329	return !!SvTRUE (ERRSV);
384	{
385	aio_req grp = req->grp;
386
387	/* unlink request */
388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
390
391	if (grp->grp_first == req)
392	grp->grp_first = req->grp_next;
393
394	aio_grp_dec (grp);
395	}
396
397	if (SvTRUE (ERRSV))
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	330	}
403		331
404	static void req_free (aio_req req)	332	static void req_destroy (aio_req req)
405	{	333	{
406	if (req->self)	334	if (req->self)
407	{	335	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	336	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	337	SvREFCNT_dec (req->self);
410	}	338	}
411		339
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	340	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	341	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	342	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		343
421	Safefree (req);	344	Safefree (req);
422	}	345	}
423		346
424	static void req_cancel (aio_req req)	347	static void req_cancel_subs (aio_req grp)
425	{	348	{
426	req->flags |= FLAG_CANCELLED;	349	aio_req sub;
427		350
428	if (req->type == REQ_GROUP)	351	if (grp->type != EIO_GROUP)
		352	return;
		353
		354	SvREFCNT_dec (grp->sv2);
		355	grp->sv2 = 0;
		356
		357	eio_grp_cancel (grp);
		358	}
		359
		360	#ifdef USE_SOCKETS_AS_HANDLES
		361	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		362	#else
		363	# define TO_SOCKET(x) (x)
		364	#endif
		365
		366	static void
		367	create_respipe (void)
		368	{
		369	int old_readfd = respipe [0];
		370
		371	if (respipe [1] >= 0)
		372	respipe_close (TO_SOCKET (respipe [1]));
		373
		374	#ifdef _WIN32
		375	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		376	#else
		377	if (pipe (respipe))
		378	#endif
		379	croak ("unable to initialize result pipe");
		380
		381	if (old_readfd >= 0)
429	{	382	{
430	aio_req sub;	383	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		384	croak ("unable to initialize result pipe(2)");
431		385
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	386	respipe_close (respipe [0]);
433	req_cancel (sub);	387	respipe [0] = old_readfd;
434	}	388	}
435	}
436		389
437	static int poll_cb ()	390	#ifdef _WIN32
438	{	391	int arg = 1;
439	dSP;	392	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
440	int count = 0;	393	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
441	int do_croak = 0;	394	#else
442	aio_req req;	395	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		396	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		397	#endif
		398	croak ("unable to initialize result pipe(3)");
443		399
444	for (;;)	400	respipe_osf [0] = TO_SOCKET (respipe [0]);
		401	respipe_osf [1] = TO_SOCKET (respipe [1]);
		402	}
		403
		404	static void poll_wait (void)
		405	{
		406	fd_set rfd;
		407
		408	while (eio_nreqs ())
445	{	409	{
446	pthread_mutex_lock (&reslock);	410	int size;
447	req = reqq_shift (&res_queue);
448		411
		412	X_LOCK (reslock);
		413	size = res_queue.size;
		414	X_UNLOCK (reslock);
		415
449	if (req)	416	if (size)
450	{
451	if (!res_queue.size)
452	{
453	/* read any signals sent by the worker threads */
454	char buf [32];
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}
458	}
459
460	pthread_mutex_unlock (&reslock);
461
462	if (!req)
463	break;	417	return;
464		418
465	--nreqs;	419	maybe_start_thread ();
466		420
467	if (req->type == REQ_QUIT)	421	FD_ZERO (&rfd);
468	started--;	422	FD_SET (respipe [0], &rfd);
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478		423
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	424	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	425	}
496
497	return count;
498	}	426	}
499		427
500	static void *aio_proc(void *arg);	428	static int poll_cb (void)
501
502	static void start_thread (void)
503	{	429	{
504	sigset_t fullsigset, oldsigset;	430	int res;
505	pthread_t tid;
506	pthread_attr_t attr;
507		431
508	pthread_attr_init (&attr);	432	do
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}
520
521	static void req_send (aio_req req)
522	{
523	while (started < wanted && nreqs >= started)
524	start_thread ();
525
526	++nreqs;
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{	433	{
572	end_thread ();	434	res = eio_poll ();
573	cur--;	435
		436	if (res > 0)
		437	croak (0);
574	}	438	}
575		439	while (max_outstanding && max_outstanding <= eio_nreqs ());
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}
582
583	static void create_pipe ()
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
589	croak ("cannot set result pipe to nonblocking mode");
590
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593	}
594
595	/*****************************************************************************/
596	/* work around various missing functions */
597
598	#if !HAVE_PREADWRITE
599	# define pread aio_pread
600	# define pwrite aio_pwrite
601
602	/*
603	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.
606	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
608
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{
611	ssize_t res;
612	off_t ooffset;
613
614	pthread_mutex_lock (&preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);
620		440
621	return res;	441	return res;
622	}	442	}
623		443
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{
626	ssize_t res;
627	off_t ooffset;
628
629	pthread_mutex_lock (&preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);
635
636	return res;
637	}
638	#endif
639
640	#if !HAVE_FDATASYNC
641	# define fdatasync fsync
642	#endif
643
644	#if !HAVE_READAHEAD
645	# define readahead aio_readahead
646
647	static ssize_t readahead (int fd, off_t offset, size_t count)
648	{
649	dBUF;
650
651	while (count > 0)
652	{
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
654
655	pread (fd, aio_buf, len, offset);
656	offset += len;
657	count -= len;
658	}
659
660	fBUF;
661
662	errno = 0;
663	}
664	#endif
665
666	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r
668
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
670
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{
673	struct dirent *e;
674	int errorno;
675
676	pthread_mutex_lock (&readdirlock);
677
678	e = readdir (dirp);
679	errorno = errno;
680
681	if (e)
682	{
683	*res = ent;
684	strcpy (ent->d_name, e->d_name);
685	}
686	else
687	*res = 0;
688
689	pthread_mutex_unlock (&readdirlock);
690
691	errno = errorno;
692	return e ? 0 : -1;
693	}
694	#endif
695
696	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
698	{
699	ssize_t res;
700
701	if (!count)
702	return 0;
703
704	#if HAVE_SENDFILE
705	# if __linux
706	res = sendfile (ofd, ifd, &offset, count);
707
708	# elif __freebsd
709	/*
710	* Of course, the freebsd sendfile is a dire hack with no thoughts
711	* wasted on making it similar to other I/O functions.
712	*/
713	{
714	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716
717	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
719	res = sbytes;
720	}
721
722	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);
724
725	# elif __solaris
726	{
727	struct sendfilevec vec;
728	size_t sbytes;
729
730	vec.sfv_fd = ifd;
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734
735	res = sendfilev (ofd, &vec, 1, &sbytes);
736
737	if (res < 0 && sbytes)
738	res = sbytes;
739	}
740
741	# endif
742	#else
743	res = -1;
744	errno = ENOSYS;
745	#endif
746
747	if (res < 0
748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
749	#if __solaris
750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
751	#endif
752	)
753	)
754	{
755	/* emulate sendfile. this is a major pain in the ass */
756	dBUF;
757
758	res = 0;
759
760	while (count)
761	{
762	ssize_t cnt;
763
764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
765
766	if (cnt <= 0)
767	{
768	if (cnt && !res) res = -1;
769	break;
770	}
771
772	cnt = write (ofd, aio_buf, cnt);
773
774	if (cnt <= 0)
775	{
776	if (cnt && !res) res = -1;
777	break;
778	}
779
780	offset += cnt;
781	res += cnt;
782	count -= cnt;
783	}
784
785	fBUF;
786	}
787
788	return res;
789	}
790
791	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)
793	{
794	DIR *dirp;
795	union
796	{
797	struct dirent d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
799	} *u;
800	struct dirent *entp;
801	char *name, *names;
802	int memlen = 4096;
803	int memofs = 0;
804	int res = 0;
805	int errorno;
806
807	dirp = opendir (path);
808	if (!dirp)
809	return -1;
810
811	u = malloc (sizeof (*u));
812	names = malloc (memlen);
813
814	if (u && names)
815	for (;;)
816	{
817	errno = 0;
818	readdir_r (dirp, &u->d, &entp);
819
820	if (!entp)
821	break;
822
823	name = entp->d_name;
824
825	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
826	{
827	int len = strlen (name) + 1;
828
829	res++;
830
831	while (memofs + len > memlen)
832	{
833	memlen *= 2;
834	names = realloc (names, memlen);
835	if (!names)
836	break;
837	}
838
839	memcpy (names + memofs, name, len);
840	memofs += len;
841	}
842	}
843
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854
855	*namesp = (void *)names;
856	return res;
857	}
858
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869
870	for (;;)
871	{
872	req = reqq_shift (&req_queue);
873
874	if (req)
875	break;
876
877	pthread_cond_wait (&reqwait, &reqlock);
878	}
879
880	pthread_mutex_unlock (&reqlock);
881
882	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884
885	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)
887	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
890
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
893
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
897
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
905
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
909
910	case REQ_SLEEP:
911	{
912	struct timeval tv;
913
914	tv.tv_sec = req->fd;
915	tv.tv_usec = req->fd2;
916
917	req->result = select (0, 0, 0, 0, &tv);
918	}
919
920	case REQ_GROUP:
921	case REQ_NOP:
922	case REQ_QUIT:
923	break;
924
925	default:
926	req->result = ENOSYS;
927	break;
928	}
929
930	req->errorno = errno;
931
932	pthread_mutex_lock (&reslock);
933
934	if (!reqq_push (&res_queue, req))
935	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);
937
938	pthread_mutex_unlock (&reslock);
939	}
940	while (type != REQ_QUIT);
941
942	return 0;
943	}
944
945	/*****************************************************************************/
946
947	static void atfork_prepare (void)
948	{
949	pthread_mutex_lock (&reqlock);
950	pthread_mutex_lock (&reslock);
951	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);
953	#endif
954	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);
956	#endif
957	}
958
959	static void atfork_parent (void)
960	{
961	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);
963	#endif
964	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);
966	#endif
967	pthread_mutex_unlock (&reslock);
968	pthread_mutex_unlock (&reqlock);
969	}
970
971	static void atfork_child (void)	444	static void atfork_child (void)
972	{	445	{
973	aio_req prv;
974
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))
978	req_free (prv);
979
980	while (prv = reqq_shift (&res_queue))
981	req_free (prv);
982
983	close (respipe [0]);
984	close (respipe [1]);
985	create_pipe ();	446	create_respipe ();
986
987	atfork_parent ();
988	}	447	}
989		448
990	#define dREQ \	449	#define dREQ \
991	aio_req req; \	450	aio_req req; \
992	int req_pri = next_pri; \	451	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \	452	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
994	\	453	\
995	if (SvOK (callback) && !SvROK (callback)) \	454	if (SvOK (callback) && !SvROK (callback)) \
996	croak ("callback must be undef or of reference type"); \	455	croak ("callback must be undef or of reference type"); \
997	\	456	\
998	Newz (0, req, 1, aio_cb); \	457	Newz (0, req, 1, eio_req); \
999	if (!req) \	458	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \	459	croak ("out of memory during eio_req allocation"); \
1001	\	460	\
1002	req->callback = newSVsv (callback); \	461	req->callback = newSVsv (callback); \
1003	req->pri = req_pri	462	req->pri = req_pri
1004		463
1005	#define REQ_SEND \	464	#define REQ_SEND \
1006	req_send (req); \	465	req_submit (req); \
1007	\	466	\
1008	if (GIMME_V != G_VOID) \	467	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));	468	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010		469
1011	MODULE = IO::AIO PACKAGE = IO::AIO	470	MODULE = IO::AIO PACKAGE = IO::AIO
1012		471
1013	PROTOTYPES: ENABLE	472	PROTOTYPES: ENABLE
1014		473
1015	BOOT:	474	BOOT:
1016	{	475	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	476	stash = gv_stashpv ("IO::AIO", 1);
		477
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	478	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	479	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	480	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		481	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		482	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		483	#ifdef _WIN32
		484	X_MUTEX_CHECK (wrklock);
		485	X_MUTEX_CHECK (reslock);
		486	X_MUTEX_CHECK (reqlock);
		487	X_MUTEX_CHECK (reqwait);
		488	X_MUTEX_CHECK (preadwritelock);
		489	X_MUTEX_CHECK (readdirlock);
1021		490
1022	create_pipe ();	491	X_COND_CHECK (reqwait);
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	492	#else
1024	}	493	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		494	#endif
1025		495
		496	create_respipe ();
		497
		498	if (eio_init (want_poll, done_poll) < 0)
		499	croak ("IO::AIO: unable to initialise eio library");
		500
		501	/* atfork child called in fifo order, so before eio's handler */
		502	X_THREAD_ATFORK (0, 0, atfork_child);
		503	}
		504
1026	void	505	void
1027	min_parallel (nthreads)	506	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	507	PROTOTYPE: $
		508	CODE:
		509	eio_set_max_poll_reqs (nreqs);
1030		510
1031	void	511	void
1032	max_parallel (nthreads)	512	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	513	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	514	CODE:
1041	RETVAL = max_outstanding;	515	eio_set_max_poll_time (nseconds);
		516
		517	void
		518	min_parallel (int nthreads)
		519	PROTOTYPE: $
		520	CODE:
		521	eio_set_min_parallel (nthreads);
		522
		523	void
		524	max_parallel (int nthreads)
		525	PROTOTYPE: $
		526	CODE:
		527	eio_set_max_parallel (nthreads);
		528
		529	void
		530	max_idle (int nthreads)
		531	PROTOTYPE: $
		532	CODE:
		533	eio_set_max_idle (nthreads);
		534
		535	void
		536	max_outstanding (int maxreqs)
		537	PROTOTYPE: $
		538	CODE:
1042	max_outstanding = nreqs;	539	max_outstanding = maxreqs;
1043		540
1044	void	541	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	542	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$	543	PROTOTYPE: $$$;$
1051	PPCODE:	544	PPCODE:
1052	{	545	{
1053	dREQ;	546	dREQ;
1054		547
1055	req->type = REQ_OPEN;	548	req->type = EIO_OPEN;
1056	req->data = newSVsv (pathname);	549	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	550	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	551	req->int1 = flags;
1059	req->mode = mode;	552	req->int2 = mode;
1060		553
1061	REQ_SEND;	554	REQ_SEND;
1062	}	555	}
1063		556
1064	void	557	void
1065	aio_close (fh,callback=&PL_sv_undef)	558	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	559	PROTOTYPE: $;$
1069	ALIAS:	560	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	561	aio_fsync = EIO_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	562	aio_fdatasync = EIO_FDATASYNC
1073	PPCODE:	563	PPCODE:
1074	{	564	{
1075	dREQ;	565	dREQ;
1076		566
1077	req->type = ix;	567	req->type = ix;
1078	req->fh = newSVsv (fh);	568	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	569	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		570
1081	REQ_SEND (req);	571	REQ_SEND (req);
1082	}	572	}
1083		573
1084	void	574	void
		575	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		576	PROTOTYPE: $;$
		577	PPCODE:
		578	{
		579	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		580	dREQ;
		581
		582	if (close_pipe < 0)
		583	{
		584	int pipefd [2];
		585
		586	if (pipe (pipefd) < 0
		587	|| close (pipefd [1]) < 0
		588	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		589	abort (); /*D*/
		590
		591	close_pipe = pipefd [0];
		592	}
		593
		594	req->type = EIO_DUP2;
		595	req->int1 = close_pipe;
		596	req->sv2 = newSVsv (fh);
		597	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		598
		599	REQ_SEND (req);
		600	}
		601
		602	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	603	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	604	ALIAS:
1093	aio_read = REQ_READ	605	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	606	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$	607	PROTOTYPE: $$$$$;$
1096	PPCODE:	608	PPCODE:
1097	{	609	{
1098	aio_req req;
1099	STRLEN svlen;	610	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	611	char *svptr = SvPVbyte (data, svlen);
		612	UV len = SvUV (length);
1101		613
1102	SvUPGRADE (data, SVt_PV);	614	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	615	SvPOK_on (data);
1104		616
1105	if (dataoffset < 0)	617	if (dataoffset < 0)
1106	dataoffset += svlen;	618	dataoffset += svlen;
1107		619
1108	if (dataoffset < 0 || dataoffset > svlen)	620	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	621	croak ("dataoffset outside of data scalar");
1110		622
1111	if (ix == REQ_WRITE)	623	if (ix == EIO_WRITE)
1112	{	624	{
1113	/* write: check length and adjust. */	625	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	626	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	627	len = svlen - dataoffset;
1116	}	628	}
1117	else	629	else
1118	{	630	{
1119	/* read: grow scalar as necessary */	631	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	632	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	633	}
1122		634
1123	if (length < 0)	635	if (len < 0)
1124	croak ("length must not be negative");	636	croak ("length must not be negative");
1125		637
1126	{	638	{
1127	dREQ;	639	dREQ;
1128		640
1129	req->type = ix;	641	req->type = ix;
1130	req->fh = newSVsv (fh);	642	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	643	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	644	: IoOFP (sv_2io (fh)));
		645	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	646	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	647	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	648	req->ptr2 = (char *)svptr + dataoffset;
		649	req->stroffset = dataoffset;
1137		650
1138	if (!SvREADONLY (data))	651	if (!SvREADONLY (data))
1139	{	652	{
1140	SvREADONLY_on (data);	653	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	654	req->flags |= FLAG_SV2_RO_OFF;
1142	}	655	}
1143		656
1144	REQ_SEND;	657	REQ_SEND;
1145	}	658	}
1146	}	659	}
1147		660
1148	void	661	void
		662	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		663	PROTOTYPE: $$;$
		664	PPCODE:
		665	{
		666	SV *data;
		667	dREQ;
		668
		669	data = newSV (NAME_MAX);
		670	SvPOK_on (data);
		671
		672	req->type = EIO_READLINK;
		673	req->sv1 = newSVsv (path);
		674	req->ptr1 = SvPVbyte_nolen (req->sv1);
		675	req->sv2 = data;
		676	req->ptr2 = SvPVbyte_nolen (data);
		677
		678	REQ_SEND;
		679	}
		680
		681	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	682	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$	683	PROTOTYPE: $$$$;$
1156	PPCODE:	684	PPCODE:
1157	{	685	{
1158	dREQ;	686	dREQ;
1159		687
1160	req->type = REQ_SENDFILE;	688	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	689	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	690	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	691	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	692	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	693	req->offs = SvVAL64 (in_offset);
1166	req->length = length;	694	req->size = length;
1167		695
1168	REQ_SEND;	696	REQ_SEND;
1169	}	697	}
1170		698
1171	void	699	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	700	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	701	PROTOTYPE: $$$;$
1178	PPCODE:	702	PPCODE:
1179	{	703	{
1180	dREQ;	704	dREQ;
1181		705
1182	req->type = REQ_READAHEAD;	706	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	707	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	709	req->offs = SvVAL64 (offset);
1186	req->length = length;	710	req->size = length;
1187		711
1188	REQ_SEND;	712	REQ_SEND;
1189	}	713	}
1190		714
1191	void	715	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	716	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	717	ALIAS:
1196	aio_stat = REQ_STAT	718	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	719	aio_lstat = EIO_LSTAT
1198	PPCODE:	720	PPCODE:
1199	{	721	{
1200	dREQ;	722	dREQ;
1201		723
1202	New (0, req->statdata, 1, Stat_t);	724	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1203	if (!req->statdata)	725	if (!req->ptr2)
1204	{	726	{
1205	req_free (req);	727	req_destroy (req);
1206	croak ("out of memory during aio_req->statdata allocation");	728	croak ("out of memory during aio_stat statdata allocation");
1207	}	729	}
		730
		731	req->flags |= EIO_FLAG_PTR2_FREE;
		732	req->sv1 = newSVsv (fh_or_path);
1208		733
1209	if (SvPOK (fh_or_path))	734	if (SvPOK (fh_or_path))
1210	{	735	{
1211	req->type = ix;	736	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	738	}
1215	else	739	else
1216	{	740	{
1217	req->type = REQ_FSTAT;	741	req->type = EIO_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	743	}
1221		744
1222	REQ_SEND;	745	REQ_SEND;
1223	}	746	}
1224		747
1225	void	748	void
		749	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		755	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		756	req->sv1 = newSVsv (fh_or_path);
		757
		758	if (SvPOK (fh_or_path))
		759	{
		760	req->type = EIO_UTIME;
		761	req->ptr1 = SvPVbyte_nolen (req->sv1);
		762	}
		763	else
		764	{
		765	req->type = EIO_FUTIME;
		766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		767	}
		768
		769	REQ_SEND;
		770	}
		771
		772	void
		773	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		774	PPCODE:
		775	{
		776	dREQ;
		777
		778	req->sv1 = newSVsv (fh_or_path);
		779	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		780
		781	if (SvPOK (fh_or_path))
		782	{
		783	req->type = EIO_TRUNCATE;
		784	req->ptr1 = SvPVbyte_nolen (req->sv1);
		785	}
		786	else
		787	{
		788	req->type = EIO_FTRUNCATE;
		789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		790	}
		791
		792	REQ_SEND;
		793	}
		794
		795	void
		796	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		797	ALIAS:
		798	aio_chmod = EIO_CHMOD
		799	aio_fchmod = EIO_FCHMOD
		800	aio_mkdir = EIO_MKDIR
		801	PPCODE:
		802	{
		803	dREQ;
		804
		805	req->type = ix;
		806	req->int2 = mode;
		807	req->sv1 = newSVsv (fh_or_path);
		808
		809	if (ix == EIO_FCHMOD)
		810	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		811	else
		812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		813
		814	REQ_SEND;
		815	}
		816
		817	void
		818	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		819	PPCODE:
		820	{
		821	dREQ;
		822
		823	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		824	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		825	req->sv1 = newSVsv (fh_or_path);
		826
		827	if (SvPOK (fh_or_path))
		828	{
		829	req->type = EIO_CHOWN;
		830	req->ptr1 = SvPVbyte_nolen (req->sv1);
		831	}
		832	else
		833	{
		834	req->type = EIO_FCHOWN;
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		836	}
		837
		838	REQ_SEND;
		839	}
		840
		841	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	842	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	843	ALIAS:
1230	aio_unlink = REQ_UNLINK	844	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	845	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	846	aio_readdir = EIO_READDIR
1233	PPCODE:	847	PPCODE:
1234	{	848	{
1235	dREQ;	849	dREQ;
1236		850
1237	req->type = ix;	851	req->type = ix;
1238	req->data = newSVsv (pathname);	852	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	853	req->ptr1 = SvPVbyte_nolen (req->sv1);
		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		860	ALIAS:
		861	aio_link = EIO_LINK
		862	aio_symlink = EIO_SYMLINK
		863	aio_rename = EIO_RENAME
		864	PPCODE:
		865	{
		866	dREQ;
		867
		868	req->type = ix;
		869	req->sv1 = newSVsv (oldpath);
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	req->sv2 = newSVsv (newpath);
		872	req->ptr2 = SvPVbyte_nolen (req->sv2);
1240		873
1241	REQ_SEND;	874	REQ_SEND;
1242	}	875	}
1243		876
1244	void	877	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	878	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:
1250	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME
1253	PPCODE:	879	PPCODE:
1254	{	880	{
1255	dREQ;	881	dREQ;
1256		882
1257	req->type = ix;	883	req->type = EIO_MKNOD;
1258	req->fh = newSVsv (oldpath);	884	req->sv1 = newSVsv (pathname);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	885	req->ptr1 = SvPVbyte_nolen (req->sv1);
1260	req->data = newSVsv (newpath);	886	req->int2 = (mode_t)mode;
1261	req->dataptr = SvPVbyte_nolen (req->data);	887	req->offs = dev;
1262		888
1263	REQ_SEND;	889	REQ_SEND;
1264	}	890	}
1265		891
1266	void	892	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	893	aio_busy (double delay, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	894	PPCODE:
1271	{	895	{
1272	dREQ;	896	dREQ;
1273		897
1274	req->type = REQ_SLEEP;	898	req->type = EIO_BUSY;
1275	req->fd = delay < 0. ? 0 : delay;	899	req->nv1 = delay < 0. ? 0. : delay;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1277		900
1278	REQ_SEND;	901	REQ_SEND;
1279	}	902	}
1280		903
1281	void	904	void
1282	aio_group (callback=&PL_sv_undef)	905	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	906	PROTOTYPE: ;$
1285	PPCODE:	907	PPCODE:
1286	{	908	{
1287	dREQ;	909	dREQ;
1288		910
1289	req->type = REQ_GROUP;	911	req->type = EIO_GROUP;
		912
1290	req_send (req);	913	eio_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	914	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	915	}
1294		916
1295	void	917	void
1296	aio_nop (callback=&PL_sv_undef)	918	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	919	ALIAS:
		920	aio_nop = EIO_NOP
		921	aio_sync = EIO_SYNC
1298	PPCODE:	922	PPCODE:
1299	{	923	{
1300	dREQ;	924	dREQ;
1301		925
1302	req->type = REQ_NOP;	926	req->type = ix;
1303		927
1304	REQ_SEND;	928	REQ_SEND;
1305	}	929	}
1306		930
1307	void	931	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	932	aioreq_pri (int pri = 0)
		933	PROTOTYPE: ;$
1309	CODE:	934	CODE:
		935	RETVAL = next_pri - EIO_PRI_BIAS;
		936	if (items > 0)
		937	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	938	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	939	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	940	next_pri = pri + EIO_PRI_BIAS;
		941	}
		942	OUTPUT:
		943	RETVAL
		944
		945	void
		946	aioreq_nice (int nice = 0)
		947	CODE:
		948	nice = next_pri - nice;
		949	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		950	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		951	next_pri = nice + EIO_PRI_BIAS;
1313		952
1314	void	953	void
1315	flush ()	954	flush ()
1316	PROTOTYPE:	955	PROTOTYPE:
1317	CODE:	956	CODE:
1318	while (nreqs)	957	while (eio_nreqs ())
1319	{	958	{
1320	poll_wait ();	959	poll_wait ();
1321	poll_cb ();	960	poll_cb ();
1322	}	961	}
1323		962
1324	void	963	int
1325	poll()	964	poll()
1326	PROTOTYPE:	965	PROTOTYPE:
1327	CODE:	966	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();	967	poll_wait ();
1331	poll_cb ();	968	RETVAL = poll_cb ();
1332	}	969	OUTPUT:
		970	RETVAL
1333		971
1334	int	972	int
1335	poll_fileno()	973	poll_fileno()
1336	PROTOTYPE:	974	PROTOTYPE:
1337	CODE:	975	CODE:
…		…
1349		987
1350	void	988	void
1351	poll_wait()	989	poll_wait()
1352	PROTOTYPE:	990	PROTOTYPE:
1353	CODE:	991	CODE:
1354	if (nreqs)
1355	poll_wait ();	992	poll_wait ();
1356		993
1357	int	994	int
1358	nreqs()	995	nreqs()
1359	PROTOTYPE:	996	PROTOTYPE:
1360	CODE:	997	CODE:
1361	RETVAL = nreqs;	998	RETVAL = eio_nreqs ();
1362	OUTPUT:	999	OUTPUT:
1363	RETVAL	1000	RETVAL
1364		1001
		1002	int
		1003	nready()
		1004	PROTOTYPE:
		1005	CODE:
		1006	RETVAL = eio_nready ();
		1007	OUTPUT:
		1008	RETVAL
		1009
		1010	int
		1011	npending()
		1012	PROTOTYPE:
		1013	CODE:
		1014	RETVAL = eio_npending ();
		1015	OUTPUT:
		1016	RETVAL
		1017
		1018	int
		1019	nthreads()
		1020	PROTOTYPE:
		1021	CODE:
		1022	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1023	RETVAL = started;
		1024	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1025	OUTPUT:
		1026	RETVAL
		1027
		1028	void _on_next_submit (SV *cb)
		1029	CODE:
		1030	SvREFCNT_dec (on_next_submit);
		1031	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1032
1365	PROTOTYPES: DISABLE	1033	PROTOTYPES: DISABLE
1366		1034
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1035	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		1036
1369	void	1037	void
1370	cancel (aio_req_ornot req)	1038	cancel (aio_req_ornot req)
1371	CODE:	1039	CODE:
1372	req_cancel (req);	1040	eio_cancel (req);
1373		1041
1374	void	1042	void
1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1043	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1376	CODE:	1044	CODE:
1377	SvREFCNT_dec (req->callback);	1045	SvREFCNT_dec (req->callback);
…		…
1382	void	1050	void
1383	add (aio_req grp, ...)	1051	add (aio_req grp, ...)
1384	PPCODE:	1052	PPCODE:
1385	{	1053	{
1386	int i;	1054	int i;
1387	aio_req req;
1388		1055
1389	if (grp->fd == 2)	1056	if (grp->int1 == 2)
1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1057	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1391		1058
1392	for (i = 1; i < items; ++i )	1059	for (i = 1; i < items; ++i )
1393	{	1060	{
		1061	aio_req req;
		1062
1394	if (GIMME_V != G_VOID)	1063	if (GIMME_V != G_VOID)
1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1064	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1396		1065
1397	req = SvAIO_REQ (ST (i));	1066	req = SvAIO_REQ (ST (i));
1398		1067
1399	if (req)	1068	if (req)
1400	{	1069	eio_grp_add (grp, req);
1401	++grp->length;
1402	req->grp = grp;
1403
1404	req->grp_prev = 0;
1405	req->grp_next = grp->grp_first;
1406
1407	if (grp->grp_first)
1408	grp->grp_first->grp_prev = req;
1409
1410	grp->grp_first = req;
1411	}	1070	}
1412	}
1413	}	1071	}
		1072
		1073	void
		1074	cancel_subs (aio_req_ornot req)
		1075	CODE:
		1076	req_cancel_subs (req);
1414		1077
1415	void	1078	void
1416	result (aio_req grp, ...)	1079	result (aio_req grp, ...)
1417	CODE:	1080	CODE:
1418	{	1081	{
1419	int i;	1082	int i;
		1083	AV *av;
		1084
		1085	grp->errorno = errno;
		1086
1420	AV *av = newAV ();	1087	av = newAV ();
1421		1088
1422	for (i = 1; i < items; ++i )	1089	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	1090	av_push (av, newSVsv (ST (i)));
1424		1091
1425	SvREFCNT_dec (grp->data);	1092	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	1093	grp->sv1 = (SV *)av;
1427	}	1094	}
		1095
		1096	void
		1097	errno (aio_req grp, int errorno = errno)
		1098	CODE:
		1099	grp->errorno = errorno;
1428		1100
1429	void	1101	void
1430	limit (aio_req grp, int limit)	1102	limit (aio_req grp, int limit)
1431	CODE:	1103	CODE:
1432	grp->fd2 = limit;	1104	eio_grp_limit (grp, limit);
1433	aio_grp_feed (grp);
1434		1105
1435	void	1106	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	1107	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	1108	CODE:
1438	{	1109	{
1439	SvREFCNT_dec (grp->fh2);	1110	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	1111	grp->sv2 = newSVsv (callback);
1441		1112
1442	if (grp->fd2 <= 0)	1113	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	1114	grp->int2 = 2;
1444		1115
1445	aio_grp_feed (grp);	1116	eio_grp_limit (grp, grp->int2);
1446	}	1117	}
1447		1118

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