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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 1.115 by root, Sat May 10 18:06:41 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	#ifdef _WIN32
30	# if __linux	19
31	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
32	# elif __freebsd	21	# undef malloc
33	# include <sys/socket.h>	22	# undef free
34	# include <sys/uio.h>	23
35	# elif __hpux	24	// perl overrides all those nice win32 functions
36	# include <sys/socket.h>	25	# undef open
37	# elif __solaris /* not yet */	26	# undef read
38	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
39	# else	56	#else
40	# error sendfile support requested but not available	57
41	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
42	#endif	65	#endif
43		66
44	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
45	#ifndef NAME_MAX	68
46	# define NAME_MAX 4096	69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
47	#endif	74	#endif
48		75
49	#if __ia64	76	static HV *stash;
50	# define STACKSIZE 65536	77	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		78
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		81
84	typedef struct aio_cb	82	#define EIO_COMMON \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	83	SV *callback; \
89	SV *fh, *fh2;	84	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;	85	STRLEN stroffset; \
97	int type;	86	SV *self
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		87
102	unsigned char flags;	88	#include "libeio/eio.h"
103	unsigned char pri;
104		89
105	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
107	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
108		96
109	enum {	97	enum {
110	FLAG_CANCELLED = 0x01,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	99	};
112		100
		101	#include "libeio/eio.c"
		102
113	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
115		105
116	enum {	106	static unsigned int max_outstanding = 0x7fffffff;
117	PRI_MIN = -4,
118	PRI_MAX = 4,
119		107
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;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
126		109
127	static int started, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;
130	static int respipe [2];
131		111
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	112	static void req_destroy (aio_req req);
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
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);	113	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
198		128
199	/* must be called at most once */	129	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
201	{	131	{
202	if (!req->self)	132	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	151	}
222		152
223	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
224	{	154	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
226	{	156	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	157	dSP;
232		158
233	ENTER;	159	ENTER;
234	SAVETMPS;	160	SAVETMPS;
235	PUSHMARK (SP);	161	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	163	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	165	SPAGAIN;
240	FREETMPS;	166	FREETMPS;
241	LEAVE;	167	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	}	168	}
252	}	169	}
253		170
254	static void aio_grp_dec (aio_req grp)	171	static int req_invoke (eio_req *req)
255	{	172	{
256	--grp->length;	173	dSP;
257		174
258	/* call feeder, if applicable */	175	if (req->flags & FLAG_SV2_RO_OFF)
259	aio_grp_feed (grp);	176	SvREADONLY_off (req->sv2);
260		177
261	/* finish, if done */	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
262	if (!grp->length && grp->fd)
263	{	179	{
264	req_invoke (grp);
265	req_free (grp);
266	}
267	}
268
269	static void poll_wait ()
270	{
271	fd_set rfd;
272
273	while (nreqs)
274	{
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;	180	ENTER;
303	SAVETMPS;	181	SAVETMPS;
304	PUSHMARK (SP);	182	PUSHMARK (SP);
305	EXTEND (SP, 1);	183	EXTEND (SP, 1);
306		184
307	switch (req->type)	185	switch (req->type)
308	{	186	{
309	case REQ_READDIR:	187	case EIO_READDIR:
310	{	188	{
311	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
312		190
313	if (req->result >= 0)	191	if (req->result >= 0)
314	{	192	{
		193	int i;
315	char *buf = req->data2ptr;	194	char *buf = req->ptr2;
316	AV *av = newAV ();	195	AV *av = newAV ();
317		196
318	while (req->result)	197	av_extend (av, req->result - 1);
		198
		199	for (i = 0; i < req->result; ++i)
319	{	200	{
320	SV *sv = newSVpv (buf, 0);	201	SV *sv = newSVpv (buf, 0);
321		202
322	av_push (av, sv);	203	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	204	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	205	}
326		206
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	207	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	208	}
329		209
330	PUSHs (rv);	210	PUSHs (rv);
331	}	211	}
332	break;	212	break;
333		213
334	case REQ_OPEN:	214	case EIO_OPEN:
335	{	215	{
336	/* convert fd to fh */	216	/* convert fd to fh */
337	SV *fh;	217	SV *fh = &PL_sv_undef;
338		218
339	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
340	PUTBACK;	220	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
343		228
344	fh = SvREFCNT_inc (POPs);	229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
345		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
346	PUSHMARK (SP);	241	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	242	}
349	break;	243	break;
350		244
351	case REQ_GROUP:	245	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
353		247
354	if (req->data)	248	if (req->sv1)
355	{	249	{
356	int i;	250	int i;
357	AV *av = (AV *)req->data;	251	AV *av = (AV *)req->sv1;
358		252
359	EXTEND (SP, AvFILL (av) + 1);	253	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
362	}	256	}
363	break;	257	break;
364		258
365	case REQ_NOP:	259	case EIO_NOP:
366	case REQ_SLEEP:	260	case EIO_BUSY:
367	break;	261	break;
		262
		263	case EIO_READLINK:
		264	if (req->result > 0)
		265	{
		266	SvCUR_set (req->sv2, req->result);
		267	*SvEND (req->sv2) = 0;
		268	PUSHs (req->sv2);
		269	}
		270	break;
		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
		281	case EIO_READ:
		282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		283	*SvEND (req->sv2) = 0;
		284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
368		291
369	default:	292	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	294	break;
372	}	295	}
373		296
		297	errno = req->errorno;
374		298
375	PUTBACK;	299	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	301	SPAGAIN;
378		302
379	FREETMPS;	303	FREETMPS;
380	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
381	}	307	}
382		308
383	if (req->grp)	309	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	}	310	}
403		311
404	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
405	{	313	{
406	if (req->self)	314	if (req->self)
407	{	315	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
410	}	318	}
411		319
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	320	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	321	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		323
421	Safefree (req);	324	Safefree (req);
422	}	325	}
423		326
424	static void req_cancel (aio_req req)	327	static void req_cancel_subs (aio_req grp)
425	{	328	{
426	req->flags |= FLAG_CANCELLED;	329	aio_req sub;
427		330
428	if (req->type == REQ_GROUP)	331	if (grp->type != EIO_GROUP)
		332	return;
		333
		334	SvREFCNT_dec (grp->sv2);
		335	grp->sv2 = 0;
		336
		337	eio_grp_cancel (grp);
		338	}
		339
		340	#ifdef USE_SOCKETS_AS_HANDLES
		341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		342	#else
		343	# define TO_SOCKET(x) (x)
		344	#endif
		345
		346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
		350
		351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
		360
		361	if (old_readfd >= 0)
429	{	362	{
430	aio_req sub;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		364	croak ("unable to initialize result pipe(2)");
431		365
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	366	respipe_close (respipe [0]);
433	req_cancel (sub);	367	respipe [0] = old_readfd;
434	}	368	}
435	}
436		369
437	static int poll_cb ()	370	#ifdef _WIN32
438	{	371	int arg = 1;
439	dSP;	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
440	int count = 0;	373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
441	int do_croak = 0;	374	#else
442	aio_req req;	375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
443		379
444	for (;;)	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
		381	respipe_osf [1] = TO_SOCKET (respipe [1]);
		382	}
		383
		384	static void poll_wait (void)
		385	{
		386	fd_set rfd;
		387
		388	while (eio_nreqs ())
445	{	389	{
446	pthread_mutex_lock (&reslock);	390	int size;
447	req = reqq_shift (&res_queue);
448		391
		392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
449	if (req)	396	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;	397	return;
464		398
465	--nreqs;	399	maybe_start_thread ();
466		400
467	if (req->type == REQ_QUIT)	401	FD_ZERO (&rfd);
468	started--;	402	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		403
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	404	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	}	405	}
496
497	return count;
498	}	406	}
499		407
500	static void *aio_proc(void *arg);	408	static int poll_cb (void)
501
502	static void start_thread (void)
503	{	409	{
504	sigset_t fullsigset, oldsigset;	410	int res = eio_poll ();
505	pthread_t tid;
506	pthread_attr_t attr;
507		411
508	pthread_attr_init (&attr);	412	if (res > 0)
509	pthread_attr_setstacksize (&attr, STACKSIZE);	413	croak (0);
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	{
572	end_thread ();
573	cur--;
574	}
575
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		414
621	return res;	415	return res;
622	}
623
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)
972	{
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 ();
986
987	atfork_parent ();
988	}	416	}
989		417
990	#define dREQ \	418	#define dREQ \
991	aio_req req; \	419	aio_req req; \
992	int req_pri = next_pri; \	420	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \	421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
994	\	422	\
995	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
996	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
997	\	425	\
998	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
999	if (!req) \	427	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
1001	\	429	\
1002	req->callback = newSVsv (callback); \	430	req->callback = newSVsv (callback); \
1003	req->pri = req_pri	431	req->pri = req_pri
1004		432
1005	#define REQ_SEND \	433	#define REQ_SEND \
1006	req_send (req); \	434	eio_submit (req); \
1007	\	435	\
1008	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1010		438
1011	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
1012		440
1013	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
1014		442
1015	BOOT:	443	BOOT:
1016	{	444	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
		446
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
1021		459
1022	create_pipe ();	460	X_COND_CHECK (reqwait);
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	461	#else
1024	}	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
1025		464
		465	create_respipe ();
		466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
		469	}
		470
1026	void	471	void
1027	min_parallel (nthreads)	472	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
1030		476
1031	void	477	void
1032	max_parallel (nthreads)	478	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	479	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	480	CODE:
1041	RETVAL = max_outstanding;	481	eio_set_max_poll_time (nseconds);
		482
		483	void
		484	min_parallel (int nthreads)
		485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
		488
		489	void
		490	max_parallel (int nthreads)
		491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
		494
		495	void
		496	max_idle (int nthreads)
		497	PROTOTYPE: $
		498	CODE:
		499	eio_set_max_idle (nthreads);
		500
		501	void
		502	max_outstanding (int maxreqs)
		503	PROTOTYPE: $
		504	CODE:
1042	max_outstanding = nreqs;	505	max_outstanding = maxreqs;
1043		506
1044	void	507	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	508	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: $$$;$	509	PROTOTYPE: $$$;$
1051	PPCODE:	510	PPCODE:
1052	{	511	{
1053	dREQ;	512	dREQ;
1054		513
1055	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
1056	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	517	req->int1 = flags;
1059	req->mode = mode;	518	req->int2 = mode;
1060		519
1061	REQ_SEND;	520	REQ_SEND;
1062	}	521	}
1063		522
1064	void	523	void
1065	aio_close (fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	525	PROTOTYPE: $;$
1069	ALIAS:	526	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
1073	PPCODE:	529	PPCODE:
1074	{	530	{
1075	dREQ;	531	dREQ;
1076		532
1077	req->type = ix;	533	req->type = ix;
1078	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		536
1081	REQ_SEND (req);	537	REQ_SEND (req);
1082	}	538	}
1083		539
1084	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	570	ALIAS:
1093	aio_read = REQ_READ	571	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1096	PPCODE:	574	PPCODE:
1097	{	575	{
1098	aio_req req;
1099	STRLEN svlen;	576	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
1101		579
1102	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	581	SvPOK_on (data);
1104		582
1105	if (dataoffset < 0)	583	if (dataoffset < 0)
1106	dataoffset += svlen;	584	dataoffset += svlen;
1107		585
1108	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
1110		588
1111	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1112	{	590	{
1113	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	593	len = svlen - dataoffset;
1116	}	594	}
1117	else	595	else
1118	{	596	{
1119	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	599	}
1122		600
1123	if (length < 0)	601	if (len < 0)
1124	croak ("length must not be negative");	602	croak ("length must not be negative");
1125		603
1126	{	604	{
1127	dREQ;	605	dREQ;
1128		606
1129	req->type = ix;	607	req->type = ix;
1130	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	612	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
1137		616
1138	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1139	{	618	{
1140	SvREADONLY_on (data);	619	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
1142	}	621	}
1143		622
1144	REQ_SEND;	623	REQ_SEND;
1145	}	624	}
1146	}	625	}
1147		626
1148	void	627	void
		628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		629	PROTOTYPE: $$;$
		630	PPCODE:
		631	{
		632	SV *data;
		633	dREQ;
		634
		635	data = newSV (NAME_MAX);
		636	SvPOK_on (data);
		637
		638	req->type = EIO_READLINK;
		639	req->sv1 = newSVsv (path);
		640	req->ptr1 = SvPVbyte_nolen (req->sv1);
		641	req->sv2 = data;
		642	req->ptr2 = SvPVbyte_nolen (data);
		643
		644	REQ_SEND;
		645	}
		646
		647	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1156	PPCODE:	650	PPCODE:
1157	{	651	{
1158	dREQ;	652	dREQ;
1159		653
1160	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
1166	req->length = length;	660	req->size = length;
1167		661
1168	REQ_SEND;	662	REQ_SEND;
1169	}	663	}
1170		664
1171	void	665	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1178	PPCODE:	668	PPCODE:
1179	{	669	{
1180	dREQ;	670	dREQ;
1181		671
1182	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	675	req->offs = SvVAL64 (offset);
1186	req->length = length;	676	req->size = length;
1187		677
1188	REQ_SEND;	678	REQ_SEND;
1189	}	679	}
1190		680
1191	void	681	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	683	ALIAS:
1196	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1198	PPCODE:	686	PPCODE:
1199	{	687	{
1200	dREQ;	688	dREQ;
1201		689
1202	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1203	if (!req->statdata)	691	if (!req->ptr2)
1204	{	692	{
1205	req_free (req);	693	req_destroy (req);
1206	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1207	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
1208		699
1209	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1210	{	701	{
1211	req->type = ix;	702	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	704	}
1215	else	705	else
1216	{	706	{
1217	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	709	}
1221		710
1222	REQ_SEND;	711	REQ_SEND;
1223	}	712	}
1224		713
1225	void	714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
		725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
		734
		735	REQ_SEND;
		736	}
		737
		738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	809	ALIAS:
1230	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1233	PPCODE:	813	PPCODE:
1234	{	814	{
1235	dREQ;	815	dREQ;
1236		816
1237	req->type = ix;	817	req->type = ix;
1238	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1240		839
1241	REQ_SEND;	840	REQ_SEND;
1242	}	841	}
1243		842
1244	void	843	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	844	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:	845	PPCODE:
1254	{	846	{
1255	dREQ;	847	dREQ;
1256		848
1257	req->type = ix;	849	req->type = EIO_MKNOD;
1258	req->fh = newSVsv (oldpath);	850	req->sv1 = newSVsv (pathname);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1260	req->data = newSVsv (newpath);	852	req->int2 = (mode_t)mode;
1261	req->dataptr = SvPVbyte_nolen (req->data);	853	req->offs = dev;
1262		854
1263	REQ_SEND;	855	REQ_SEND;
1264	}	856	}
1265		857
1266	void	858	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	860	PPCODE:
1271	{	861	{
1272	dREQ;	862	dREQ;
1273		863
1274	req->type = REQ_SLEEP;	864	req->type = EIO_BUSY;
1275	req->fd = delay < 0. ? 0 : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1277		866
1278	REQ_SEND;	867	REQ_SEND;
1279	}	868	}
1280		869
1281	void	870	void
1282	aio_group (callback=&PL_sv_undef)	871	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1285	PPCODE:	873	PPCODE:
1286	{	874	{
1287	dREQ;	875	dREQ;
1288		876
1289	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
		878
1290	req_send (req);	879	eio_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	881	}
1294		882
1295	void	883	void
1296	aio_nop (callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1298	PPCODE:	888	PPCODE:
1299	{	889	{
1300	dREQ;	890	dREQ;
1301		891
1302	req->type = REQ_NOP;	892	req->type = ix;
1303		893
1304	REQ_SEND;	894	REQ_SEND;
1305	}	895	}
1306		896
1307	void	897	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	898	aioreq_pri (int pri = 0)
		899	PROTOTYPE: ;$
1309	CODE:	900	CODE:
		901	RETVAL = next_pri - EIO_PRI_BIAS;
		902	if (items > 0)
		903	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	906	next_pri = pri + EIO_PRI_BIAS;
		907	}
		908	OUTPUT:
		909	RETVAL
		910
		911	void
		912	aioreq_nice (int nice = 0)
		913	CODE:
		914	nice = next_pri - nice;
		915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		917	next_pri = nice + EIO_PRI_BIAS;
1313		918
1314	void	919	void
1315	flush ()	920	flush ()
1316	PROTOTYPE:	921	PROTOTYPE:
1317	CODE:	922	CODE:
…		…
1319	{	924	{
1320	poll_wait ();	925	poll_wait ();
1321	poll_cb ();	926	poll_cb ();
1322	}	927	}
1323		928
1324	void	929	int
1325	poll()	930	poll()
1326	PROTOTYPE:	931	PROTOTYPE:
1327	CODE:	932	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();	933	poll_wait ();
1331	poll_cb ();	934	RETVAL = poll_cb ();
1332	}	935	OUTPUT:
		936	RETVAL
1333		937
1334	int	938	int
1335	poll_fileno()	939	poll_fileno()
1336	PROTOTYPE:	940	PROTOTYPE:
1337	CODE:	941	CODE:
…		…
1349		953
1350	void	954	void
1351	poll_wait()	955	poll_wait()
1352	PROTOTYPE:	956	PROTOTYPE:
1353	CODE:	957	CODE:
1354	if (nreqs)
1355	poll_wait ();	958	poll_wait ();
1356		959
1357	int	960	int
1358	nreqs()	961	nreqs()
1359	PROTOTYPE:	962	PROTOTYPE:
1360	CODE:	963	CODE:
1361	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1362	OUTPUT:	965	OUTPUT:
1363	RETVAL	966	RETVAL
1364		967
		968	int
		969	nready()
		970	PROTOTYPE:
		971	CODE:
		972	RETVAL = eio_nready ();
		973	OUTPUT:
		974	RETVAL
		975
		976	int
		977	npending()
		978	PROTOTYPE:
		979	CODE:
		980	RETVAL = eio_npending ();
		981	OUTPUT:
		982	RETVAL
		983
		984	int
		985	nthreads()
		986	PROTOTYPE:
		987	CODE:
		988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		989	RETVAL = started;
		990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		991	OUTPUT:
		992	RETVAL
		993
1365	PROTOTYPES: DISABLE	994	PROTOTYPES: DISABLE
1366		995
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		997
1369	void	998	void
1370	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1371	CODE:	1000	CODE:
1372	req_cancel (req);	1001	eio_cancel (req);
1373		1002
1374	void	1003	void
1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1376	CODE:	1005	CODE:
1377	SvREFCNT_dec (req->callback);	1006	SvREFCNT_dec (req->callback);
…		…
1382	void	1011	void
1383	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1384	PPCODE:	1013	PPCODE:
1385	{	1014	{
1386	int i;	1015	int i;
1387	aio_req req;
1388		1016
1389	if (grp->fd == 2)	1017	if (grp->int1 == 2)
1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1391		1019
1392	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
1393	{	1021	{
		1022	aio_req req;
		1023
1394	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1396		1026
1397	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
1398		1028
1399	if (req)	1029	if (req)
1400	{	1030	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	}	1031	}
1412	}
1413	}	1032	}
		1033
		1034	void
		1035	cancel_subs (aio_req_ornot req)
		1036	CODE:
		1037	req_cancel_subs (req);
1414		1038
1415	void	1039	void
1416	result (aio_req grp, ...)	1040	result (aio_req grp, ...)
1417	CODE:	1041	CODE:
1418	{	1042	{
1419	int i;	1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
1420	AV *av = newAV ();	1048	av = newAV ();
1421		1049
1422	for (i = 1; i < items; ++i )	1050	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	1051	av_push (av, newSVsv (ST (i)));
1424		1052
1425	SvREFCNT_dec (grp->data);	1053	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	1054	grp->sv1 = (SV *)av;
1427	}	1055	}
		1056
		1057	void
		1058	errno (aio_req grp, int errorno = errno)
		1059	CODE:
		1060	grp->errorno = errorno;
1428		1061
1429	void	1062	void
1430	limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
1431	CODE:	1064	CODE:
1432	grp->fd2 = limit;	1065	eio_grp_limit (grp, limit);
1433	aio_grp_feed (grp);
1434		1066
1435	void	1067	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	1069	CODE:
1438	{	1070	{
1439	SvREFCNT_dec (grp->fh2);	1071	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
1441		1073
1442	if (grp->fd2 <= 0)	1074	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	1075	grp->int2 = 2;
1444		1076
1445	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
1446	}	1078	}
1447		1079

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