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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.131 by root, Sun Oct 12 22:30:33 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	/* perl stupidly overrides readdir and maybe others */
45	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
46	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
47	#endif	83	#endif
48		84
49	#if __ia64	85	/*****************************************************************************/
50	# define STACKSIZE 65536	86
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	87	#if __GNUC__ >= 3
52	# define STACKSIZE PTHREAD_STACK_MIN	88	# define expect(expr,value) __builtin_expect ((expr),(value))
53	#else	89	#else
54	# define STACKSIZE 16384	90	# define expect(expr,value) (expr)
55	#endif	91	#endif
56		92
57	/* buffer size for various temporary buffers */	93	#define expect_false(expr) expect ((expr) != 0, 0)
58	#define AIO_BUFSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
59		95
60	#define dBUF \	96	/*****************************************************************************/
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64		97
65	#define fBUF free (aio_buf)	98	static HV *stash;
66		99	typedef SV SV8; /* byte-sv, used for argument-checking */
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		100
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		103
84	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	105	SV *callback; \
89	SV *fh, *fh2;	106	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;	107	STRLEN stroffset; \
97	int type;	108	SV *self;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		109
102	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
103	unsigned char pri;
104		111
105	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
107	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
108		118
109	enum {	119	enum {
110	FLAG_CANCELLED = 0x01,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	121	};
112		122
		123	#include "libeio/eio.c"
		124
113	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
115		127
116	enum {	128	static SV *on_next_submit;
117	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	};
123
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	130	static int max_outstanding;
129	static int respipe [2];
130		131
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif
136		133
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	134	static void req_destroy (aio_req req);
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141	static volatile aio_req reqs, reqe; /* queue start, queue end */
142	static volatile aio_req ress, rese; /* queue start, queue end */
143
144	static void req_invoke (aio_req req);	135	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
146		150
147	/* must be called at most once */	151	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
149	{	153	{
150	if (!req->self)	154	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	173	}
170		174
171	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
172	{	176	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	177	if (grp->sv2 && SvOK (grp->sv2))
174	{	178	{
175	int old_len = grp->length;	179	dSP;
176		180
177	if (grp->fh2 && SvOK (grp->fh2))	181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191	}
		192
		193	static void req_submit (eio_req *req)
		194	{
		195	eio_submit (req);
		196
		197	if (expect_false (on_next_submit))
		198	{
		199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
		207	}
		208	}
		209
		210	static int req_invoke (eio_req *req)
		211	{
		212	dSP;
		213
		214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
		218	{
		219	ENTER;
		220	SAVETMPS;
		221	PUSHMARK (SP);
		222	EXTEND (SP, 1);
		223
		224	switch (req->type)
178	{	225	{
179	dSP;	226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
180		229
181	ENTER;	230	if (req->result >= 0)
182	SAVETMPS;	231	{
183	PUSHMARK (SP);	232	int i;
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	233	char *buf = req->ptr2;
185	PUTBACK;	234	AV *av = newAV ();
186	call_sv (grp->fh2, G_VOID | G_EVAL);	235
187	SPAGAIN;	236	av_extend (av, req->result - 1);
188	FREETMPS;	237
189	LEAVE;	238	for (i = 0; i < req->result; ++i)
		239	{
		240	SV *sv = newSVpv (buf, 0);
		241
		242	av_store (av, i, sv);
		243	buf += SvCUR (sv) + 1;
		244	}
		245
		246	rv = sv_2mortal (newRV_noinc ((SV *)av));
		247	}
		248
		249	PUSHs (rv);
		250	}
		251	break;
		252
		253	case EIO_OPEN:
		254	{
		255	/* convert fd to fh */
		256	SV *fh = &PL_sv_undef;
		257
		258	if (req->result >= 0)
		259	{
		260	GV *gv = (GV *)sv_newmortal ();
		261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		262	char sym [64];
		263	int symlen;
		264
		265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		266	gv_init (gv, stash, sym, symlen, 0);
		267
		268	symlen = snprintf (
		269	sym,
		270	sizeof (sym),
		271	"%s&=%d",
		272	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		273	req->result
		274	);
		275
		276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		277	fh = (SV *)gv;
		278	}
		279
		280	PUSHs (fh);
		281	}
		282	break;
		283
		284	case EIO_GROUP:
		285	req->int1 = 2; /* mark group as finished */
		286
		287	if (req->sv1)
		288	{
		289	int i;
		290	AV *av = (AV *)req->sv1;
		291
		292	EXTEND (SP, AvFILL (av) + 1);
		293	for (i = 0; i <= AvFILL (av); ++i)
		294	PUSHs (*av_fetch (av, i, 0));
		295	}
		296	break;
		297
		298	case EIO_NOP:
		299	case EIO_BUSY:
		300	break;
		301
		302	case EIO_READLINK:
		303	if (req->result > 0)
		304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		305	break;
		306
		307	case EIO_STAT:
		308	case EIO_LSTAT:
		309	case EIO_FSTAT:
		310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		311	PL_laststatval = req->result;
		312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		313	PUSHs (sv_2mortal (newSViv (req->result)));
		314	break;
		315
		316	case EIO_READ:
		317	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		318	*SvEND (req->sv2) = 0;
		319	PUSHs (sv_2mortal (newSViv (req->result)));
		320	break;
		321
		322	case EIO_DUP2:
		323	if (req->result > 0)
		324	req->result = 0;
		325	/* FALLTHROUGH */
		326
		327	default:
		328	PUSHs (sv_2mortal (newSViv (req->result)));
		329	break;
190	}	330	}
191		331
192	/* stop if no progress has been made */	332	errno = req->errorno;
193	if (old_len == grp->length)	333
194	{	334	PUTBACK;
195	SvREFCNT_dec (grp->fh2);	335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
196	grp->fh2 = 0;	336	SPAGAIN;
197	break;	337
198	}	338	FREETMPS;
		339	LEAVE;
		340
		341	PUTBACK;
199	}	342	}
200	}
201		343
202	static void aio_grp_dec (aio_req grp)	344	return !!SvTRUE (ERRSV);
203	{
204	--grp->length;
205
206	/* call feeder, if applicable */
207	aio_grp_feed (grp);
208
209	/* finish, if done */
210	if (!grp->length && grp->fd)
211	{
212	req_invoke (grp);
213	req_free (grp);
214	}
215	}	345	}
216		346
217	static void poll_wait ()
218	{
219	fd_set rfd;
220
221	while (nreqs)
222	{
223	aio_req req;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225	pthread_mutex_lock (&reslock);
226	#endif
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231
232	if (req)
233	return;
234
235	FD_ZERO(&rfd);
236	FD_SET(respipe [0], &rfd);
237
238	select (respipe [0] + 1, &rfd, 0, 0, 0);
239	}
240	}
241
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)	347	static void req_destroy (aio_req req)
342	{	348	{
343	if (req->grp)
344	{
345	aio_req grp = req->grp;
346
347	/* unlink request */
348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351	if (grp->grp_first == req)
352	grp->grp_first = req->grp_next;
353
354	aio_grp_dec (grp);
355	}
356
357	if (req->self)	349	if (req->self)
358	{	350	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	351	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	352	SvREFCNT_dec (req->self);
361	}	353	}
362		354
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	355	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	356	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	357	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		358
372	Safefree (req);	359	Safefree (req);
373	}	360	}
374		361
375	static void req_cancel (aio_req req)	362	static void req_cancel_subs (aio_req grp)
376	{	363	{
377	req->flags |= FLAG_CANCELLED;	364	aio_req sub;
378		365
379	if (req->type == REQ_GROUP)	366	if (grp->type != EIO_GROUP)
		367	return;
		368
		369	SvREFCNT_dec (grp->sv2);
		370	grp->sv2 = 0;
		371
		372	eio_grp_cancel (grp);
		373	}
		374
		375	#ifdef USE_SOCKETS_AS_HANDLES
		376	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		377	#else
		378	# define TO_SOCKET(x) (x)
		379	#endif
		380
		381	static void
		382	create_respipe (void)
		383	{
		384	int old_readfd = respipe [0];
		385
		386	if (respipe [1] >= 0)
		387	respipe_close (TO_SOCKET (respipe [1]));
		388
		389	#ifdef _WIN32
		390	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		391	#else
		392	if (pipe (respipe))
		393	#endif
		394	croak ("unable to initialize result pipe");
		395
		396	if (old_readfd >= 0)
380	{	397	{
381	aio_req sub;	398	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		399	croak ("unable to initialize result pipe(2)");
382		400
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	401	respipe_close (respipe [0]);
384	req_cancel (sub);	402	respipe [0] = old_readfd;
385	}	403	}
386	}
387		404
		405	#ifdef _WIN32
		406	int arg = 1;
		407	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		408	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		409	#else
		410	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		411	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		412	#endif
		413	croak ("unable to initialize result pipe(3)");
		414
		415	respipe_osf [0] = TO_SOCKET (respipe [0]);
		416	respipe_osf [1] = TO_SOCKET (respipe [1]);
		417	}
		418
		419	static void poll_wait (void)
		420	{
		421	fd_set rfd;
		422
		423	while (eio_nreqs ())
		424	{
		425	int size;
		426
		427	X_LOCK (reslock);
		428	size = res_queue.size;
		429	X_UNLOCK (reslock);
		430
		431	if (size)
		432	return;
		433
		434	etp_maybe_start_thread ();
		435
		436	FD_ZERO (&rfd);
		437	FD_SET (respipe [0], &rfd);
		438
		439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		440	}
		441	}
		442
388	static int poll_cb ()	443	static int poll_cb (void)
389	{	444	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	445	for (;;)
396	{	446	{
397	pthread_mutex_lock (&reslock);	447	int res = eio_poll ();
398	req = ress;
399		448
400	if (req)	449	if (res > 0)
401	{
402	ress = req->next;
403
404	if (!ress)
405	{
406	/* read any signals sent by the worker threads */
407	char buf [32];
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}
413	}
414
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;	450	croak (0);
419		451
420	--nreqs;	452	if (!max_outstanding || max_outstanding > eio_nreqs ())
		453	return res;
421		454
422	if (req->type == REQ_QUIT)	455	poll_wait ();
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	456	}
451
452	return count;
453	}	457	}
454		458
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)	459	static void atfork_child (void)
458	{	460	{
459	sigset_t fullsigset, oldsigset;	461	create_respipe ();
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}	462	}
475		463
476	static void req_send (aio_req req)	464	static SV *
		465	get_cb (SV *cb_sv)
477	{	466	{
478	while (started < wanted && nreqs >= started)	467	HV *st;
479	start_thread ();	468	GV *gvp;
		469	CV *cv;
480		470
481	++nreqs;	471	if (!SvOK (cb_sv))
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}
544
545	static void create_pipe ()
546	{
547	if (pipe (respipe))
548	croak ("unable to initialize result pipe");
549
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551	croak ("cannot set result pipe to nonblocking mode");
552
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554	croak ("cannot set result pipe to nonblocking mode");
555	}
556
557	/*****************************************************************************/
558	/* work around various missing functions */
559
560	#if !HAVE_PREADWRITE
561	# define pread aio_pread
562	# define pwrite aio_pwrite
563
564	/*
565	* make our pread/pwrite safe against themselves, but not against
566	* normal read/write by using a mutex. slows down execution a lot,
567	* but that's your problem, not mine.
568	*/
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{
573	ssize_t res;
574	off_t ooffset;
575
576	pthread_mutex_lock (&preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582
583	return res;
584	}
585
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{
588	ssize_t res;
589	off_t ooffset;
590
591	pthread_mutex_lock (&preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597
598	return res;
599	}
600	#endif
601
602	#if !HAVE_FDATASYNC
603	# define fdatasync fsync
604	#endif
605
606	#if !HAVE_READAHEAD
607	# define readahead aio_readahead
608
609	static ssize_t readahead (int fd, off_t offset, size_t count)
610	{
611	dBUF;
612
613	while (count > 0)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616
617	pread (fd, aio_buf, len, offset);
618	offset += len;
619	count -= len;
620	}
621
622	fBUF;
623
624	errno = 0;
625	}
626	#endif
627
628	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r
630
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{
635	struct dirent *e;
636	int errorno;
637
638	pthread_mutex_lock (&readdirlock);
639
640	e = readdir (dirp);
641	errorno = errno;
642
643	if (e)
644	{
645	*res = ent;
646	strcpy (ent->d_name, e->d_name);
647	}
648	else
649	*res = 0;
650
651	pthread_mutex_unlock (&readdirlock);
652
653	errno = errorno;
654	return e ? 0 : -1;
655	}
656	#endif
657
658	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
660	{
661	ssize_t res;
662
663	if (!count)
664	return 0;	472	return 0;
665		473
666	#if HAVE_SENDFILE	474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669		475
670	# elif __freebsd	476	if (!cv)
671	/*	477	croak ("IO::AIO callback must be undef or a CODE reference");
672	* Of course, the freebsd sendfile is a dire hack with no thoughts
673	* wasted on making it similar to other I/O functions.
674	*/
675	{
676	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		478
679	if (res < 0 && sbytes)	479	return (SV *)cv;
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
681	res = sbytes;
682	}
683
684	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);
686
687	# elif __solaris
688	{
689	struct sendfilevec vec;
690	size_t sbytes;
691
692	vec.sfv_fd = ifd;
693	vec.sfv_flag = 0;
694	vec.sfv_off = offset;
695	vec.sfv_len = count;
696
697	res = sendfilev (ofd, &vec, 1, &sbytes);
698
699	if (res < 0 && sbytes)
700	res = sbytes;
701	}
702
703	# endif
704	#else
705	res = -1;
706	errno = ENOSYS;
707	#endif
708
709	if (res < 0
710	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711	#if __solaris
712	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
713	#endif
714	)
715	)
716	{
717	/* emulate sendfile. this is a major pain in the ass */
718	dBUF;
719
720	res = 0;
721
722	while (count)
723	{
724	ssize_t cnt;
725
726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728	if (cnt <= 0)
729	{
730	if (cnt && !res) res = -1;
731	break;
732	}
733
734	cnt = write (ofd, aio_buf, cnt);
735
736	if (cnt <= 0)
737	{
738	if (cnt && !res) res = -1;
739	break;
740	}
741
742	offset += cnt;
743	res += cnt;
744	count -= cnt;
745	}
746
747	fBUF;
748	}
749
750	return res;
751	}
752
753	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)
755	{
756	DIR *dirp;
757	union
758	{
759	struct dirent d;
760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761	} *u;
762	struct dirent *entp;
763	char *name, *names;
764	int memlen = 4096;
765	int memofs = 0;
766	int res = 0;
767	int errorno;
768
769	dirp = opendir (path);
770	if (!dirp)
771	return -1;
772
773	u = malloc (sizeof (*u));
774	names = malloc (memlen);
775
776	if (u && names)
777	for (;;)
778	{
779	errno = 0;
780	readdir_r (dirp, &u->d, &entp);
781
782	if (!entp)
783	break;
784
785	name = entp->d_name;
786
787	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788	{
789	int len = strlen (name) + 1;
790
791	res++;
792
793	while (memofs + len > memlen)
794	{
795	memlen *= 2;
796	names = realloc (names, memlen);
797	if (!names)
798	break;
799	}
800
801	memcpy (names + memofs, name, len);
802	memofs += len;
803	}
804	}
805
806	errorno = errno;
807	free (u);
808	closedir (dirp);
809
810	if (errorno)
811	{
812	free (names);
813	errno = errorno;
814	res = -1;
815	}
816
817	*namesp = (void *)names;
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831
832	for (;;)
833	{
834	req = reqs;
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841
842	if (req)
843	break;
844
845	pthread_cond_wait (&reqwait, &reqlock);
846	}
847
848	pthread_mutex_unlock (&reqlock);
849
850	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852
853	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)
855	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878	case REQ_SLEEP:
879	{
880	struct timeval tv;
881
882	tv.tv_sec = req->fd;
883	tv.tv_usec = req->fd2;
884
885	req->result = select (0, 0, 0, 0, &tv);
886	}
887
888	case REQ_GROUP:
889	case REQ_NOP:
890	case REQ_QUIT:
891	break;
892
893	default:
894	req->result = ENOSYS;
895	break;
896	}
897
898	req->errorno = errno;
899
900	pthread_mutex_lock (&reslock);
901
902	req->next = 0;
903
904	if (rese)
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);
915	}
916
917	pthread_mutex_unlock (&reslock);
918	}
919	while (type != REQ_QUIT);
920
921	return 0;
922	}
923
924	/*****************************************************************************/
925
926	static void atfork_prepare (void)
927	{
928	pthread_mutex_lock (&reqlock);
929	pthread_mutex_lock (&reslock);
930	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);
932	#endif
933	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);
935	#endif
936	}
937
938	static void atfork_parent (void)
939	{
940	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);
942	#endif
943	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);
945	#endif
946	pthread_mutex_unlock (&reslock);
947	pthread_mutex_unlock (&reqlock);
948	}
949
950	static void atfork_child (void)
951	{
952	aio_req prv;
953
954	started = 0;
955
956	while (reqs)
957	{
958	prv = reqs;
959	reqs = prv->next;
960	req_free (prv);
961	}
962
963	reqs = reqe = 0;
964
965	while (ress)
966	{
967	prv = ress;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973
974	close (respipe [0]);
975	close (respipe [1]);
976	create_pipe ();
977
978	atfork_parent ();
979	}	480	}
980		481
981	#define dREQ \	482	#define dREQ \
		483	SV *cb_cv; \
982	aio_req req; \	484	aio_req req; \
983	int req_pri = next_pri; \	485	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	486	next_pri = EIO_PRI_DEFAULT; \
985	\	487	\
986	if (SvOK (callback) && !SvROK (callback)) \	488	cb_cv = get_cb (callback); \
987	croak ("callback must be undef or of reference type"); \
988	\	489	\
989	Newz (0, req, 1, aio_cb); \	490	Newz (0, req, 1, eio_req); \
990	if (!req) \	491	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	492	croak ("out of memory during eio_req allocation"); \
992	\	493	\
993	req->callback = newSVsv (callback); \	494	req->callback = SvREFCNT_inc (cb_cv); \
994	req->pri = req_pri	495	req->pri = req_pri
995		496
996	#define REQ_SEND \	497	#define REQ_SEND \
		498	PUTBACK; \
997	req_send (req); \	499	req_submit (req); \
		500	SPAGAIN; \
998	\	501	\
999	if (GIMME_V != G_VOID) \	502	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	503	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001		504
1002	MODULE = IO::AIO PACKAGE = IO::AIO	505	MODULE = IO::AIO PACKAGE = IO::AIO
1003		506
1004	PROTOTYPES: ENABLE	507	PROTOTYPES: ENABLE
1005		508
1006	BOOT:	509	BOOT:
1007	{	510	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	511	stash = gv_stashpv ("IO::AIO", 1);
		512
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	513	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	514	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	515	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		516	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		517	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		518	#ifndef _WIN32
		519	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		520	#endif
1012		521
1013	create_pipe ();	522	create_respipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016		523
		524	if (eio_init (want_poll, done_poll) < 0)
		525	croak ("IO::AIO: unable to initialise eio library");
		526
		527	/* atfork child called in fifo order, so before eio's handler */
		528	X_THREAD_ATFORK (0, 0, atfork_child);
		529	}
		530
1017	void	531	void
1018	min_parallel (nthreads)	532	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	533	PROTOTYPE: $
		534	CODE:
		535	eio_set_max_poll_reqs (nreqs);
1021		536
1022	void	537	void
1023	max_parallel (nthreads)	538	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	539	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	540	CODE:
1032	RETVAL = max_outstanding;	541	eio_set_max_poll_time (nseconds);
		542
		543	void
		544	min_parallel (int nthreads)
		545	PROTOTYPE: $
		546	CODE:
		547	eio_set_min_parallel (nthreads);
		548
		549	void
		550	max_parallel (int nthreads)
		551	PROTOTYPE: $
		552	CODE:
		553	eio_set_max_parallel (nthreads);
		554
		555	void
		556	max_idle (int nthreads)
		557	PROTOTYPE: $
		558	CODE:
		559	eio_set_max_idle (nthreads);
		560
		561	void
		562	max_outstanding (int maxreqs)
		563	PROTOTYPE: $
		564	CODE:
1033	max_outstanding = nreqs;	565	max_outstanding = maxreqs;
1034		566
1035	void	567	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	568	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$	569	PROTOTYPE: $$$;$
1042	PPCODE:	570	PPCODE:
1043	{	571	{
1044	dREQ;	572	dREQ;
1045		573
1046	req->type = REQ_OPEN;	574	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	575	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	576	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	577	req->int1 = flags;
1050	req->mode = mode;	578	req->int2 = mode;
1051		579
1052	REQ_SEND;	580	REQ_SEND;
1053	}	581	}
1054		582
1055	void	583	void
1056	aio_close (fh,callback=&PL_sv_undef)	584	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	585	PROTOTYPE: $;$
1060	ALIAS:	586	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	587	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	588	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	589	PPCODE:
1065	{	590	{
1066	dREQ;	591	dREQ;
1067		592
1068	req->type = ix;	593	req->type = ix;
1069	req->fh = newSVsv (fh);	594	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	595	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071		596
1072	REQ_SEND (req);	597	REQ_SEND (req);
1073	}	598	}
1074		599
1075	void	600	void
		601	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		602	PROTOTYPE: $;$
		603	PPCODE:
		604	{
		605	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		606	dREQ;
		607
		608	if (close_pipe < 0)
		609	{
		610	int pipefd [2];
		611
		612	if (pipe (pipefd) < 0
		613	|| close (pipefd [1]) < 0
		614	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		615	abort (); /*D*/
		616
		617	close_pipe = pipefd [0];
		618	}
		619
		620	req->type = EIO_DUP2;
		621	req->int1 = close_pipe;
		622	req->sv2 = newSVsv (fh);
		623	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		624
		625	REQ_SEND (req);
		626	}
		627
		628	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	629	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	630	ALIAS:
1084	aio_read = REQ_READ	631	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	632	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$	633	PROTOTYPE: $$$$$;$
1087	PPCODE:	634	PPCODE:
1088	{	635	{
1089	aio_req req;
1090	STRLEN svlen;	636	STRLEN svlen;
1091	char *svptr = SvPVbyte (data, svlen);	637	char *svptr = SvPVbyte (data, svlen);
		638	UV len = SvUV (length);
1092		639
1093	SvUPGRADE (data, SVt_PV);	640	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);	641	SvPOK_on (data);
1095		642
1096	if (dataoffset < 0)	643	if (dataoffset < 0)
1097	dataoffset += svlen;	644	dataoffset += svlen;
1098		645
1099	if (dataoffset < 0 || dataoffset > svlen)	646	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	647	croak ("dataoffset outside of data scalar");
1101		648
1102	if (ix == REQ_WRITE)	649	if (ix == EIO_WRITE)
1103	{	650	{
1104	/* write: check length and adjust. */	651	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	652	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	653	len = svlen - dataoffset;
1107	}	654	}
1108	else	655	else
1109	{	656	{
1110	/* read: grow scalar as necessary */	657	/* read: grow scalar as necessary */
1111	svptr = SvGROW (data, length + dataoffset);	658	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	659	}
1113		660
1114	if (length < 0)	661	if (len < 0)
1115	croak ("length must not be negative");	662	croak ("length must not be negative");
1116		663
1117	{	664	{
1118	dREQ;	665	dREQ;
1119		666
1120	req->type = ix;	667	req->type = ix;
1121	req->fh = newSVsv (fh);	668	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	669	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1123	: IoOFP (sv_2io (fh)));	670	: IoOFP (sv_2io (fh)));
		671	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	672	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	673	req->sv2 = SvREFCNT_inc_NN (data);
1127	req->dataptr = (char *)svptr + dataoffset;	674	req->ptr2 = (char *)svptr + dataoffset;
		675	req->stroffset = dataoffset;
1128		676
1129	if (!SvREADONLY (data))	677	if (!SvREADONLY (data))
1130	{	678	{
1131	SvREADONLY_on (data);	679	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	680	req->flags |= FLAG_SV2_RO_OFF;
1133	}	681	}
1134		682
1135	REQ_SEND;	683	REQ_SEND;
1136	}	684	}
1137	}	685	}
1138		686
1139	void	687	void
		688	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		689	PROTOTYPE: $$;$
		690	PPCODE:
		691	{
		692	SV *data;
		693	dREQ;
		694
		695	req->type = EIO_READLINK;
		696	req->sv1 = newSVsv (path);
		697	req->ptr1 = SvPVbyte_nolen (req->sv1);
		698
		699	REQ_SEND;
		700	}
		701
		702	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	703	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$	704	PROTOTYPE: $$$$;$
1147	PPCODE:	705	PPCODE:
1148	{	706	{
1149	dREQ;	707	dREQ;
1150		708
1151	req->type = REQ_SENDFILE;	709	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	710	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	711	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154	req->fh2 = newSVsv (in_fh);	712	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	713	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156	req->offset = in_offset;	714	req->offs = SvVAL64 (in_offset);
1157	req->length = length;	715	req->size = length;
1158		716
1159	REQ_SEND;	717	REQ_SEND;
1160	}	718	}
1161		719
1162	void	720	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	721	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	722	PROTOTYPE: $$$;$
1169	PPCODE:	723	PPCODE:
1170	{	724	{
1171	dREQ;	725	dREQ;
1172		726
1173	req->type = REQ_READAHEAD;	727	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	728	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	729	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176	req->offset = offset;	730	req->offs = SvVAL64 (offset);
1177	req->length = length;	731	req->size = length;
1178		732
1179	REQ_SEND;	733	REQ_SEND;
1180	}	734	}
1181		735
1182	void	736	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	737	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	738	ALIAS:
1187	aio_stat = REQ_STAT	739	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	740	aio_lstat = EIO_LSTAT
1189	PPCODE:	741	PPCODE:
1190	{	742	{
1191	dREQ;	743	dREQ;
1192		744
1193	New (0, req->statdata, 1, Stat_t);	745	req->sv1 = newSVsv (fh_or_path);
1194	if (!req->statdata)
1195	{
1196	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");
1198	}
1199		746
1200	if (SvPOK (fh_or_path))	747	if (SvPOK (req->sv1))
1201	{	748	{
1202	req->type = ix;	749	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	750	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	751	}
1206	else	752	else
1207	{	753	{
1208	req->type = REQ_FSTAT;	754	req->type = EIO_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	756	}
1212		757
1213	REQ_SEND;	758	REQ_SEND;
1214	}	759	}
1215		760
1216	void	761	void
		762	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		763	PPCODE:
		764	{
		765	dREQ;
		766
		767	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		768	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		769	req->sv1 = newSVsv (fh_or_path);
		770
		771	if (SvPOK (req->sv1))
		772	{
		773	req->type = EIO_UTIME;
		774	req->ptr1 = SvPVbyte_nolen (req->sv1);
		775	}
		776	else
		777	{
		778	req->type = EIO_FUTIME;
		779	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		780	}
		781
		782	REQ_SEND;
		783	}
		784
		785	void
		786	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		787	PPCODE:
		788	{
		789	dREQ;
		790
		791	req->sv1 = newSVsv (fh_or_path);
		792	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		793
		794	if (SvPOK (req->sv1))
		795	{
		796	req->type = EIO_TRUNCATE;
		797	req->ptr1 = SvPVbyte_nolen (req->sv1);
		798	}
		799	else
		800	{
		801	req->type = EIO_FTRUNCATE;
		802	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		803	}
		804
		805	REQ_SEND;
		806	}
		807
		808	void
		809	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		810	ALIAS:
		811	aio_chmod = EIO_CHMOD
		812	aio_mkdir = EIO_MKDIR
		813	PPCODE:
		814	{
		815	dREQ;
		816
		817	req->int2 = mode;
		818	req->sv1 = newSVsv (fh_or_path);
		819
		820	if (SvPOK (req->sv1))
		821	{
		822	req->type = ix;
		823	req->ptr1 = SvPVbyte_nolen (req->sv1);
		824	}
		825	else
		826	{
		827	req->type = EIO_FCHMOD;
		828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		829	}
		830
		831	REQ_SEND;
		832	}
		833
		834	void
		835	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		836	PPCODE:
		837	{
		838	dREQ;
		839
		840	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		841	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		842	req->sv1 = newSVsv (fh_or_path);
		843
		844	if (SvPOK (req->sv1))
		845	{
		846	req->type = EIO_CHOWN;
		847	req->ptr1 = SvPVbyte_nolen (req->sv1);
		848	}
		849	else
		850	{
		851	req->type = EIO_FCHOWN;
		852	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		853	}
		854
		855	REQ_SEND;
		856	}
		857
		858	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	859	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	860	ALIAS:
1221	aio_unlink = REQ_UNLINK	861	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	862	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	863	aio_readdir = EIO_READDIR
1224	PPCODE:	864	PPCODE:
1225	{	865	{
1226	dREQ;	866	dREQ;
1227		867
1228	req->type = ix;	868	req->type = ix;
1229	req->data = newSVsv (pathname);	869	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871
		872	REQ_SEND;
		873	}
		874
		875	void
		876	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		877	ALIAS:
		878	aio_link = EIO_LINK
		879	aio_symlink = EIO_SYMLINK
		880	aio_rename = EIO_RENAME
		881	PPCODE:
		882	{
		883	dREQ;
		884
		885	req->type = ix;
		886	req->sv1 = newSVsv (oldpath);
		887	req->ptr1 = SvPVbyte_nolen (req->sv1);
		888	req->sv2 = newSVsv (newpath);
		889	req->ptr2 = SvPVbyte_nolen (req->sv2);
1231		890
1232	REQ_SEND;	891	REQ_SEND;
1233	}	892	}
1234		893
1235	void	894	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	895	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:
1241	aio_link = REQ_LINK
1242	aio_symlink = REQ_SYMLINK
1243	aio_rename = REQ_RENAME
1244	PPCODE:	896	PPCODE:
1245	{	897	{
1246	dREQ;	898	dREQ;
1247		899
1248	req->type = ix;	900	req->type = EIO_MKNOD;
1249	req->fh = newSVsv (oldpath);	901	req->sv1 = newSVsv (pathname);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	902	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	903	req->int2 = (mode_t)mode;
1252	req->dataptr = SvPVbyte_nolen (req->data);	904	req->offs = dev;
1253		905
1254	REQ_SEND;	906	REQ_SEND;
1255	}	907	}
1256		908
1257	void	909	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	910	aio_busy (double delay, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	911	PPCODE:
1262	{	912	{
1263	dREQ;	913	dREQ;
1264		914
1265	req->type = REQ_SLEEP;	915	req->type = EIO_BUSY;
1266	req->fd = delay < 0. ? 0 : delay;	916	req->nv1 = delay < 0. ? 0. : delay;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1268		917
1269	REQ_SEND;	918	REQ_SEND;
1270	}	919	}
1271		920
1272	void	921	void
1273	aio_group (callback=&PL_sv_undef)	922	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	923	PROTOTYPE: ;$
1276	PPCODE:	924	PPCODE:
1277	{	925	{
1278	dREQ;	926	dREQ;
1279		927
1280	req->type = REQ_GROUP;	928	req->type = EIO_GROUP;
		929
1281	req_send (req);	930	req_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	931	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	932	}
1285		933
1286	void	934	void
1287	aio_nop (callback=&PL_sv_undef)	935	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	936	ALIAS:
		937	aio_nop = EIO_NOP
		938	aio_sync = EIO_SYNC
1289	PPCODE:	939	PPCODE:
1290	{	940	{
1291	dREQ;	941	dREQ;
1292		942
1293	req->type = REQ_NOP;	943	req->type = ix;
1294		944
1295	REQ_SEND;	945	REQ_SEND;
1296	}	946	}
1297		947
1298	#if 0	948	int
1299		949	aioreq_pri (int pri = 0)
1300	void	950	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	951	CODE:
		952	RETVAL = next_pri;
		953	if (items > 0)
		954	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	955	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	956	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	957	next_pri = pri;
		958	}
		959	OUTPUT:
		960	RETVAL
1306		961
1307	#endif	962	void
		963	aioreq_nice (int nice = 0)
		964	CODE:
		965	nice = next_pri - nice;
		966	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		967	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		968	next_pri = nice;
1308		969
1309	void	970	void
1310	flush ()	971	flush ()
1311	PROTOTYPE:	972	PROTOTYPE:
1312	CODE:	973	CODE:
1313	while (nreqs)	974	while (eio_nreqs ())
1314	{	975	{
1315	poll_wait ();	976	poll_wait ();
1316	poll_cb ();	977	poll_cb ();
1317	}	978	}
1318		979
1319	void	980	int
1320	poll()	981	poll()
1321	PROTOTYPE:	982	PROTOTYPE:
1322	CODE:	983	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	984	poll_wait ();
1326	poll_cb ();	985	RETVAL = poll_cb ();
1327	}	986	OUTPUT:
		987	RETVAL
1328		988
1329	int	989	int
1330	poll_fileno()	990	poll_fileno()
1331	PROTOTYPE:	991	PROTOTYPE:
1332	CODE:	992	CODE:
…		…
1344		1004
1345	void	1005	void
1346	poll_wait()	1006	poll_wait()
1347	PROTOTYPE:	1007	PROTOTYPE:
1348	CODE:	1008	CODE:
1349	if (nreqs)
1350	poll_wait ();	1009	poll_wait ();
1351		1010
1352	int	1011	int
1353	nreqs()	1012	nreqs()
1354	PROTOTYPE:	1013	PROTOTYPE:
1355	CODE:	1014	CODE:
1356	RETVAL = nreqs;	1015	RETVAL = eio_nreqs ();
1357	OUTPUT:	1016	OUTPUT:
1358	RETVAL	1017	RETVAL
1359		1018
		1019	int
		1020	nready()
		1021	PROTOTYPE:
		1022	CODE:
		1023	RETVAL = eio_nready ();
		1024	OUTPUT:
		1025	RETVAL
		1026
		1027	int
		1028	npending()
		1029	PROTOTYPE:
		1030	CODE:
		1031	RETVAL = eio_npending ();
		1032	OUTPUT:
		1033	RETVAL
		1034
		1035	int
		1036	nthreads()
		1037	PROTOTYPE:
		1038	CODE:
		1039	RETVAL = eio_nthreads ();
		1040	OUTPUT:
		1041	RETVAL
		1042
		1043	void _on_next_submit (SV *cb)
		1044	CODE:
		1045	SvREFCNT_dec (on_next_submit);
		1046	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1047
1360	PROTOTYPES: DISABLE	1048	PROTOTYPES: DISABLE
1361		1049
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1050	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1051
1364	void	1052	void
1365	cancel (aio_req_ornot req)	1053	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1054	CODE:
1368	req_cancel (req);	1055	eio_cancel (req);
1369		1056
1370	void	1057	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1058	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1372	CODE:	1059	PPCODE:
		1060	{
		1061	if (GIMME_V != G_VOID)
		1062	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1063
		1064	if (items > 1)
		1065	{
		1066	SV *cb_cv = get_cb (callback);
		1067
1373	SvREFCNT_dec (req->callback);	1068	SvREFCNT_dec (req->callback);
1374	req->callback = newSVsv (callback);	1069	req->callback = SvREFCNT_inc (cb_cv);
		1070	}
		1071	}
1375		1072
1376	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1073	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1377		1074
1378	void	1075	void
1379	add (aio_req grp, ...)	1076	add (aio_req grp, ...)
1380	PPCODE:	1077	PPCODE:
1381	{	1078	{
1382	int i;	1079	int i;
1383	aio_req req;
1384		1080
1385	if (grp->fd == 2)	1081	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1082	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1083
1388	for (i = 1; i < items; ++i )	1084	for (i = 1; i < items; ++i )
1389	{	1085	{
		1086	aio_req req;
		1087
1390	if (GIMME_V != G_VOID)	1088	if (GIMME_V != G_VOID)
1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1089	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1392		1090
1393	req = SvAIO_REQ (ST (i));	1091	req = SvAIO_REQ (ST (i));
1394		1092
1395	if (req)	1093	if (req)
1396	{	1094	eio_grp_add (grp, req);
1397	++grp->length;
1398	req->grp = grp;
1399
1400	req->grp_prev = 0;
1401	req->grp_next = grp->grp_first;
1402
1403	if (grp->grp_first)
1404	grp->grp_first->grp_prev = req;
1405
1406	grp->grp_first = req;
1407	}	1095	}
1408	}
1409	}	1096	}
		1097
		1098	void
		1099	cancel_subs (aio_req_ornot req)
		1100	CODE:
		1101	req_cancel_subs (req);
1410		1102
1411	void	1103	void
1412	result (aio_req grp, ...)	1104	result (aio_req grp, ...)
1413	CODE:	1105	CODE:
1414	{	1106	{
1415	int i;	1107	int i;
		1108	AV *av;
		1109
		1110	grp->errorno = errno;
		1111
1416	AV *av = newAV ();	1112	av = newAV ();
1417		1113
1418	for (i = 1; i < items; ++i )	1114	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1115	av_push (av, newSVsv (ST (i)));
1420		1116
1421	SvREFCNT_dec (grp->data);	1117	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1118	grp->sv1 = (SV *)av;
1423	}	1119	}
1424		1120
1425	void	1121	void
		1122	errno (aio_req grp, int errorno = errno)
		1123	CODE:
		1124	grp->errorno = errorno;
		1125
		1126	void
1426	feed_limit (aio_req grp, int limit)	1127	limit (aio_req grp, int limit)
1427	CODE:	1128	CODE:
1428	grp->fd2 = limit;	1129	eio_grp_limit (grp, limit);
1429	aio_grp_feed (grp);
1430		1130
1431	void	1131	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1132	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1133	CODE:
1434	{	1134	{
1435	SvREFCNT_dec (grp->fh2);	1135	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1136	grp->sv2 = newSVsv (callback);
		1137	grp->feed = aio_grp_feed;
1437		1138
1438	if (grp->fd2 <= 0)	1139	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1140	grp->int2 = 2;
1440		1141
1441	aio_grp_feed (grp);	1142	eio_grp_limit (grp, grp->int2);
1442	}	1143	}
1443		1144

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