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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 1.119 by root, Sun May 11 19:11:05 2008 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
28		17
29	#if HAVE_SENDFILE	18	/* perl namespace pollution */
30	# if __linux	19	#undef VERSION
31	# include <sys/sendfile.h>	20
32	# elif __freebsd	21	#ifdef _WIN32
33	# include <sys/socket.h>	22
34	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __hpux	24	# undef malloc
36	# include <sys/socket.h>	25	# undef free
37	# elif __solaris /* not yet */	26
38	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
39	# else	59	#else
40	# error sendfile support requested but not available	60
41	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
42	#endif	68	#endif
43		69
44	/* used for struct dirent, AIX doesn't provide it */	70	#define EIO_STRUCT_STAT Stat_t
45	#ifndef NAME_MAX	71
46	# define NAME_MAX 4096	72	/* use NV for 32 bit perls as it allows larger offsets */
		73	#if IVSIZE >= 8
		74	# define SvVAL64 SvIV
		75	#else
		76	# define SvVAL64 SvNV
47	#endif	77	#endif
48		78
49	#if __ia64	79	static HV *stash;
50	# define STACKSIZE 65536	80	typedef SV SV8; /* byte-sv, used for argument-checking */
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536
59
60	#define dBUF \
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64
65	#define fBUF free (aio_buf)
66
67	enum {
68	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};
80		81
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		84
84	typedef struct aio_cb	85	#define EIO_COMMON \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	86	SV *callback; \
89	SV *fh, *fh2;	87	SV *sv1, *sv2; \
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;	88	STRLEN stroffset; \
97	int type;	89	SV *self
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		90
102	unsigned char flags;	91	#include "libeio/eio.h"
103	unsigned char pri;
104		92
105	SV *self; /* the perl counterpart of this request, if any */	93	static int req_invoke (eio_req *req);
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94	#define EIO_FINISH(req) req_invoke (req)
107	} aio_cb;	95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
108		99
109	enum {	100	enum {
110	FLAG_CANCELLED = 0x01,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	102	};
112		103
		104	#include "libeio/eio.c"
		105
113	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
115		108
116	enum {	109	static SV *on_next_submit;
117	PRI_MIN = -4,
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	};
123
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;	110	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	111	static int max_outstanding;
129	static int respipe [2];
130		112
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	113	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		114
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	115	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);	116	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
146		131
147	/* must be called at most once */	132	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
149	{	134	{
150	if (!req->self)	135	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	154	}
170		155
171	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
172	{	157	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	158	if (grp->sv2 && SvOK (grp->sv2))
174	{	159	{
175	int old_len = grp->length;	160	dSP;
176		161
177	if (grp->fh2 && SvOK (grp->fh2))	162	ENTER;
		163	SAVETMPS;
		164	PUSHMARK (SP);
		165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		166	PUTBACK;
		167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		168	SPAGAIN;
		169	FREETMPS;
		170	LEAVE;
		171	}
		172	}
		173
		174	static void req_submit (eio_req *req)
		175	{
		176	eio_submit (req);
		177
		178	if (on_next_submit)
		179	{
		180	dSP;
		181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
		188	}
		189	}
		190
		191	static int req_invoke (eio_req *req)
		192	{
		193	dSP;
		194
		195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
		197
		198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		199	{
		200	ENTER;
		201	SAVETMPS;
		202	PUSHMARK (SP);
		203	EXTEND (SP, 1);
		204
		205	switch (req->type)
178	{	206	{
179	dSP;	207	case EIO_READDIR:
		208	{
		209	SV *rv = &PL_sv_undef;
180		210
181	ENTER;	211	if (req->result >= 0)
182	SAVETMPS;	212	{
183	PUSHMARK (SP);	213	int i;
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	char *buf = req->ptr2;
185	PUTBACK;	215	AV *av = newAV ();
186	call_sv (grp->fh2, G_VOID | G_EVAL);	216
187	SPAGAIN;	217	av_extend (av, req->result - 1);
188	FREETMPS;	218
189	LEAVE;	219	for (i = 0; i < req->result; ++i)
		220	{
		221	SV *sv = newSVpv (buf, 0);
		222
		223	av_store (av, i, sv);
		224	buf += SvCUR (sv) + 1;
		225	}
		226
		227	rv = sv_2mortal (newRV_noinc ((SV *)av));
		228	}
		229
		230	PUSHs (rv);
		231	}
		232	break;
		233
		234	case EIO_OPEN:
		235	{
		236	/* convert fd to fh */
		237	SV *fh = &PL_sv_undef;
		238
		239	if (req->result >= 0)
		240	{
		241	GV *gv = (GV *)sv_newmortal ();
		242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
		248
		249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
		261	PUSHs (fh);
		262	}
		263	break;
		264
		265	case EIO_GROUP:
		266	req->int1 = 2; /* mark group as finished */
		267
		268	if (req->sv1)
		269	{
		270	int i;
		271	AV *av = (AV *)req->sv1;
		272
		273	EXTEND (SP, AvFILL (av) + 1);
		274	for (i = 0; i <= AvFILL (av); ++i)
		275	PUSHs (*av_fetch (av, i, 0));
		276	}
		277	break;
		278
		279	case EIO_NOP:
		280	case EIO_BUSY:
		281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		286	break;
		287
		288	case EIO_STAT:
		289	case EIO_LSTAT:
		290	case EIO_FSTAT:
		291	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		292	PL_laststatval = req->result;
		293	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		294	PUSHs (sv_2mortal (newSViv (req->result)));
		295	break;
		296
		297	case EIO_READ:
		298	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		299	*SvEND (req->sv2) = 0;
		300	PUSHs (sv_2mortal (newSViv (req->result)));
		301	break;
		302
		303	case EIO_DUP2:
		304	if (req->result > 0)
		305	req->result = 0;
		306	/* FALLTHROUGH */
		307
		308	default:
		309	PUSHs (sv_2mortal (newSViv (req->result)));
		310	break;
190	}	311	}
191		312
192	/* stop if no progress has been made */	313	errno = req->errorno;
193	if (old_len == grp->length)	314
194	{	315	PUTBACK;
195	SvREFCNT_dec (grp->fh2);	316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
196	grp->fh2 = 0;	317	SPAGAIN;
197	break;	318
198	}	319	FREETMPS;
		320	LEAVE;
		321
		322	PUTBACK;
199	}	323	}
200	}
201		324
202	static void aio_grp_dec (aio_req grp)	325	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	}	326	}
216		327
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)	328	static void req_destroy (aio_req req)
342	{	329	{
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)	330	if (req->self)
358	{	331	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	332	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	333	SvREFCNT_dec (req->self);
361	}	334	}
362		335
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	336	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	337	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	338	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		339
372	Safefree (req);	340	Safefree (req);
373	}	341	}
374		342
375	static void req_cancel (aio_req req)	343	static void req_cancel_subs (aio_req grp)
376	{	344	{
377	req->flags |= FLAG_CANCELLED;	345	aio_req sub;
378		346
379	if (req->type == REQ_GROUP)	347	if (grp->type != EIO_GROUP)
		348	return;
		349
		350	SvREFCNT_dec (grp->sv2);
		351	grp->sv2 = 0;
		352
		353	eio_grp_cancel (grp);
		354	}
		355
		356	#ifdef USE_SOCKETS_AS_HANDLES
		357	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		358	#else
		359	# define TO_SOCKET(x) (x)
		360	#endif
		361
		362	static void
		363	create_respipe (void)
		364	{
		365	int old_readfd = respipe [0];
		366
		367	if (respipe [1] >= 0)
		368	respipe_close (TO_SOCKET (respipe [1]));
		369
		370	#ifdef _WIN32
		371	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		372	#else
		373	if (pipe (respipe))
		374	#endif
		375	croak ("unable to initialize result pipe");
		376
		377	if (old_readfd >= 0)
380	{	378	{
381	aio_req sub;	379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		380	croak ("unable to initialize result pipe(2)");
382		381
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	382	respipe_close (respipe [0]);
384	req_cancel (sub);	383	respipe [0] = old_readfd;
385	}	384	}
386	}
387		385
388	static int poll_cb ()	386	#ifdef _WIN32
389	{	387	int arg = 1;
390	dSP;	388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
391	int count = 0;	389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
392	int do_croak = 0;	390	#else
393	aio_req req;	391	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		392	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		393	#endif
		394	croak ("unable to initialize result pipe(3)");
394		395
395	for (;;)	396	respipe_osf [0] = TO_SOCKET (respipe [0]);
		397	respipe_osf [1] = TO_SOCKET (respipe [1]);
		398	}
		399
		400	static void poll_wait (void)
		401	{
		402	fd_set rfd;
		403
		404	while (eio_nreqs ())
396	{	405	{
397	pthread_mutex_lock (&reslock);	406	int size;
398	req = ress;
399		407
		408	X_LOCK (reslock);
		409	size = res_queue.size;
		410	X_UNLOCK (reslock);
		411
400	if (req)	412	if (size)
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;	413	return;
419		414
420	--nreqs;	415	maybe_start_thread ();
421		416
422	if (req->type == REQ_QUIT)	417	FD_ZERO (&rfd);
423	started--;	418	FD_SET (respipe [0], &rfd);
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		419
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	420	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
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	}	421	}
451
452	return count;
453	}	422	}
454		423
455	static void *aio_proc(void *arg);	424	static int poll_cb (void)
456
457	static void start_thread (void)
458	{	425	{
459	sigset_t fullsigset, oldsigset;	426	int res;
460	pthread_t tid;
461	pthread_attr_t attr;
462		427
463	pthread_attr_init (&attr);	428	do
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	}
475
476	static void req_send (aio_req req)
477	{
478	while (started < wanted && nreqs >= started)
479	start_thread ();
480
481	++nreqs;
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{	429	{
489	reqe->next = req;	430	res = eio_poll ();
490	reqe = req;	431
		432	if (res > 0)
		433	croak (0);
491	}	434	}
492	else	435	while (max_outstanding && max_outstanding <= eio_nreqs ());
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		436
583	return res;	437	return res;
584	}	438	}
585		439
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;
665
666	#if HAVE_SENDFILE
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669
670	# elif __freebsd
671	/*
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
679	if (res < 0 && sbytes)
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)	440	static void atfork_child (void)
951	{	441	{
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 ();	442	create_respipe ();
977
978	atfork_parent ();
979	}	443	}
980		444
981	#define dREQ \	445	#define dREQ \
982	aio_req req; \	446	aio_req req; \
983	int req_pri = next_pri; \	447	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	448	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
985	\	449	\
986	if (SvOK (callback) && !SvROK (callback)) \	450	if (SvOK (callback) && !SvROK (callback)) \
987	croak ("callback must be undef or of reference type"); \	451	croak ("callback must be undef or of reference type"); \
988	\	452	\
989	Newz (0, req, 1, aio_cb); \	453	Newz (0, req, 1, eio_req); \
990	if (!req) \	454	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	455	croak ("out of memory during eio_req allocation"); \
992	\	456	\
993	req->callback = newSVsv (callback); \	457	req->callback = newSVsv (callback); \
994	req->pri = req_pri	458	req->pri = req_pri
995		459
996	#define REQ_SEND \	460	#define REQ_SEND \
997	req_send (req); \	461	req_submit (req); \
998	\	462	\
999	if (GIMME_V != G_VOID) \	463	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001		465
1002	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
1003		467
1004	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
1005		469
1006	BOOT:	470	BOOT:
1007	{	471	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	472	stash = gv_stashpv ("IO::AIO", 1);
		473
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		479	#ifdef _WIN32
		480	X_MUTEX_CHECK (wrklock);
		481	X_MUTEX_CHECK (reslock);
		482	X_MUTEX_CHECK (reqlock);
		483	X_MUTEX_CHECK (reqwait);
		484	X_MUTEX_CHECK (preadwritelock);
		485	X_MUTEX_CHECK (readdirlock);
1012		486
1013	create_pipe ();	487	X_COND_CHECK (reqwait);
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	488	#else
1015	}	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		490	#endif
1016		491
		492	create_respipe ();
		493
		494	if (eio_init (want_poll, done_poll) < 0)
		495	croak ("IO::AIO: unable to initialise eio library");
		496
		497	/* atfork child called in fifo order, so before eio's handler */
		498	X_THREAD_ATFORK (0, 0, atfork_child);
		499	}
		500
1017	void	501	void
1018	min_parallel (nthreads)	502	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	503	PROTOTYPE: $
		504	CODE:
		505	eio_set_max_poll_reqs (nreqs);
1021		506
1022	void	507	void
1023	max_parallel (nthreads)	508	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	509	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	510	CODE:
1032	RETVAL = max_outstanding;	511	eio_set_max_poll_time (nseconds);
		512
		513	void
		514	min_parallel (int nthreads)
		515	PROTOTYPE: $
		516	CODE:
		517	eio_set_min_parallel (nthreads);
		518
		519	void
		520	max_parallel (int nthreads)
		521	PROTOTYPE: $
		522	CODE:
		523	eio_set_max_parallel (nthreads);
		524
		525	void
		526	max_idle (int nthreads)
		527	PROTOTYPE: $
		528	CODE:
		529	eio_set_max_idle (nthreads);
		530
		531	void
		532	max_outstanding (int maxreqs)
		533	PROTOTYPE: $
		534	CODE:
1033	max_outstanding = nreqs;	535	max_outstanding = maxreqs;
1034		536
1035	void	537	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	538	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: $$$;$	539	PROTOTYPE: $$$;$
1042	PPCODE:	540	PPCODE:
1043	{	541	{
1044	dREQ;	542	dREQ;
1045		543
1046	req->type = REQ_OPEN;	544	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	545	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	546	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	547	req->int1 = flags;
1050	req->mode = mode;	548	req->int2 = mode;
1051		549
1052	REQ_SEND;	550	REQ_SEND;
1053	}	551	}
1054		552
1055	void	553	void
1056	aio_close (fh,callback=&PL_sv_undef)	554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	555	PROTOTYPE: $;$
1060	ALIAS:	556	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	557	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	558	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	559	PPCODE:
1065	{	560	{
1066	dREQ;	561	dREQ;
1067		562
1068	req->type = ix;	563	req->type = ix;
1069	req->fh = newSVsv (fh);	564	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071		566
1072	REQ_SEND (req);	567	REQ_SEND (req);
1073	}	568	}
1074		569
1075	void	570	void
		571	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		572	PROTOTYPE: $;$
		573	PPCODE:
		574	{
		575	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		576	dREQ;
		577
		578	if (close_pipe < 0)
		579	{
		580	int pipefd [2];
		581
		582	if (pipe (pipefd) < 0
		583	|| close (pipefd [1]) < 0
		584	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		585	abort (); /*D*/
		586
		587	close_pipe = pipefd [0];
		588	}
		589
		590	req->type = EIO_DUP2;
		591	req->int1 = close_pipe;
		592	req->sv2 = newSVsv (fh);
		593	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		594
		595	REQ_SEND (req);
		596	}
		597
		598	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	599	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:	600	ALIAS:
1084	aio_read = REQ_READ	601	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	602	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$	603	PROTOTYPE: $$$$$;$
1087	PPCODE:	604	PPCODE:
1088	{	605	{
1089	aio_req req;
1090	STRLEN svlen;	606	STRLEN svlen;
1091	char *svptr = SvPVbyte (data, svlen);	607	char *svptr = SvPVbyte (data, svlen);
		608	UV len = SvUV (length);
1092		609
1093	SvUPGRADE (data, SVt_PV);	610	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);	611	SvPOK_on (data);
1095		612
1096	if (dataoffset < 0)	613	if (dataoffset < 0)
1097	dataoffset += svlen;	614	dataoffset += svlen;
1098		615
1099	if (dataoffset < 0 || dataoffset > svlen)	616	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	617	croak ("dataoffset outside of data scalar");
1101		618
1102	if (ix == REQ_WRITE)	619	if (ix == EIO_WRITE)
1103	{	620	{
1104	/* write: check length and adjust. */	621	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	622	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	623	len = svlen - dataoffset;
1107	}	624	}
1108	else	625	else
1109	{	626	{
1110	/* read: grow scalar as necessary */	627	/* read: grow scalar as necessary */
1111	svptr = SvGROW (data, length + dataoffset);	628	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	629	}
1113		630
1114	if (length < 0)	631	if (len < 0)
1115	croak ("length must not be negative");	632	croak ("length must not be negative");
1116		633
1117	{	634	{
1118	dREQ;	635	dREQ;
1119		636
1120	req->type = ix;	637	req->type = ix;
1121	req->fh = newSVsv (fh);	638	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1123	: IoOFP (sv_2io (fh)));	640	: IoOFP (sv_2io (fh)));
		641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	642	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	643	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	644	req->ptr2 = (char *)svptr + dataoffset;
		645	req->stroffset = dataoffset;
1128		646
1129	if (!SvREADONLY (data))	647	if (!SvREADONLY (data))
1130	{	648	{
1131	SvREADONLY_on (data);	649	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	650	req->flags |= FLAG_SV2_RO_OFF;
1133	}	651	}
1134		652
1135	REQ_SEND;	653	REQ_SEND;
1136	}	654	}
1137	}	655	}
1138		656
1139	void	657	void
		658	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		659	PROTOTYPE: $$;$
		660	PPCODE:
		661	{
		662	SV *data;
		663	dREQ;
		664
		665	req->type = EIO_READLINK;
		666	req->sv1 = newSVsv (path);
		667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		668
		669	REQ_SEND;
		670	}
		671
		672	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	673	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: $$$$;$	674	PROTOTYPE: $$$$;$
1147	PPCODE:	675	PPCODE:
1148	{	676	{
1149	dREQ;	677	dREQ;
1150		678
1151	req->type = REQ_SENDFILE;	679	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	680	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154	req->fh2 = newSVsv (in_fh);	682	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156	req->offset = in_offset;	684	req->offs = SvVAL64 (in_offset);
1157	req->length = length;	685	req->size = length;
1158		686
1159	REQ_SEND;	687	REQ_SEND;
1160	}	688	}
1161		689
1162	void	690	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	691	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	692	PROTOTYPE: $$$;$
1169	PPCODE:	693	PPCODE:
1170	{	694	{
1171	dREQ;	695	dREQ;
1172		696
1173	req->type = REQ_READAHEAD;	697	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	698	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176	req->offset = offset;	700	req->offs = SvVAL64 (offset);
1177	req->length = length;	701	req->size = length;
1178		702
1179	REQ_SEND;	703	REQ_SEND;
1180	}	704	}
1181		705
1182	void	706	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	708	ALIAS:
1187	aio_stat = REQ_STAT	709	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	710	aio_lstat = EIO_LSTAT
1189	PPCODE:	711	PPCODE:
1190	{	712	{
1191	dREQ;	713	dREQ;
1192		714
1193	New (0, req->statdata, 1, Stat_t);	715	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		716
1200	if (SvPOK (fh_or_path))	717	if (SvPOK (req->sv1))
1201	{	718	{
1202	req->type = ix;	719	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	721	}
1206	else	722	else
1207	{	723	{
1208	req->type = REQ_FSTAT;	724	req->type = EIO_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	726	}
1212		727
1213	REQ_SEND;	728	REQ_SEND;
1214	}	729	}
1215		730
1216	void	731	void
		732	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		733	PPCODE:
		734	{
		735	dREQ;
		736
		737	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		738	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		739	req->sv1 = newSVsv (fh_or_path);
		740
		741	if (SvPOK (req->sv1))
		742	{
		743	req->type = EIO_UTIME;
		744	req->ptr1 = SvPVbyte_nolen (req->sv1);
		745	}
		746	else
		747	{
		748	req->type = EIO_FUTIME;
		749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		750	}
		751
		752	REQ_SEND;
		753	}
		754
		755	void
		756	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		757	PPCODE:
		758	{
		759	dREQ;
		760
		761	req->sv1 = newSVsv (fh_or_path);
		762	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		763
		764	if (SvPOK (req->sv1))
		765	{
		766	req->type = EIO_TRUNCATE;
		767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		768	}
		769	else
		770	{
		771	req->type = EIO_FTRUNCATE;
		772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		773	}
		774
		775	REQ_SEND;
		776	}
		777
		778	void
		779	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		780	ALIAS:
		781	aio_chmod = EIO_CHMOD
		782	aio_mkdir = EIO_MKDIR
		783	PPCODE:
		784	{
		785	dREQ;
		786
		787	req->int2 = mode;
		788	req->sv1 = newSVsv (fh_or_path);
		789
		790	if (SvPOK (req->sv1))
		791	{
		792	req->type = EIO_FCHMOD;
		793	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		794	}
		795	else
		796	{
		797	req->type = ix;
		798	req->ptr1 = SvPVbyte_nolen (req->sv1);
		799	}
		800
		801	REQ_SEND;
		802	}
		803
		804	void
		805	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		806	PPCODE:
		807	{
		808	dREQ;
		809
		810	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		811	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		812	req->sv1 = newSVsv (fh_or_path);
		813
		814	if (SvPOK (req->sv1))
		815	{
		816	req->type = EIO_CHOWN;
		817	req->ptr1 = SvPVbyte_nolen (req->sv1);
		818	}
		819	else
		820	{
		821	req->type = EIO_FCHOWN;
		822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		823	}
		824
		825	REQ_SEND;
		826	}
		827
		828	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	830	ALIAS:
1221	aio_unlink = REQ_UNLINK	831	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	832	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	833	aio_readdir = EIO_READDIR
1224	PPCODE:	834	PPCODE:
1225	{	835	{
1226	dREQ;	836	dREQ;
1227		837
1228	req->type = ix;	838	req->type = ix;
1229	req->data = newSVsv (pathname);	839	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841
		842	REQ_SEND;
		843	}
		844
		845	void
		846	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_link = EIO_LINK
		849	aio_symlink = EIO_SYMLINK
		850	aio_rename = EIO_RENAME
		851	PPCODE:
		852	{
		853	dREQ;
		854
		855	req->type = ix;
		856	req->sv1 = newSVsv (oldpath);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858	req->sv2 = newSVsv (newpath);
		859	req->ptr2 = SvPVbyte_nolen (req->sv2);
1231		860
1232	REQ_SEND;	861	REQ_SEND;
1233	}	862	}
1234		863
1235	void	864	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	865	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:	866	PPCODE:
1245	{	867	{
1246	dREQ;	868	dREQ;
1247		869
1248	req->type = ix;	870	req->type = EIO_MKNOD;
1249	req->fh = newSVsv (oldpath);	871	req->sv1 = newSVsv (pathname);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	873	req->int2 = (mode_t)mode;
1252	req->dataptr = SvPVbyte_nolen (req->data);	874	req->offs = dev;
1253		875
1254	REQ_SEND;	876	REQ_SEND;
1255	}	877	}
1256		878
1257	void	879	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	880	aio_busy (double delay, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	881	PPCODE:
1262	{	882	{
1263	dREQ;	883	dREQ;
1264		884
1265	req->type = REQ_SLEEP;	885	req->type = EIO_BUSY;
1266	req->fd = delay < 0. ? 0 : delay;	886	req->nv1 = delay < 0. ? 0. : delay;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1268		887
1269	REQ_SEND;	888	REQ_SEND;
1270	}	889	}
1271		890
1272	void	891	void
1273	aio_group (callback=&PL_sv_undef)	892	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	893	PROTOTYPE: ;$
1276	PPCODE:	894	PPCODE:
1277	{	895	{
1278	dREQ;	896	dREQ;
1279		897
1280	req->type = REQ_GROUP;	898	req->type = EIO_GROUP;
		899
1281	req_send (req);	900	eio_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	902	}
1285		903
1286	void	904	void
1287	aio_nop (callback=&PL_sv_undef)	905	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	906	ALIAS:
		907	aio_nop = EIO_NOP
		908	aio_sync = EIO_SYNC
1289	PPCODE:	909	PPCODE:
1290	{	910	{
1291	dREQ;	911	dREQ;
1292		912
1293	req->type = REQ_NOP;	913	req->type = ix;
1294		914
1295	REQ_SEND;	915	REQ_SEND;
1296	}	916	}
1297		917
1298	#if 0	918	int
1299		919	aioreq_pri (int pri = 0)
1300	void	920	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	921	CODE:
		922	RETVAL = next_pri - EIO_PRI_BIAS;
		923	if (items > 0)
		924	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	925	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	926	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	927	next_pri = pri + EIO_PRI_BIAS;
		928	}
		929	OUTPUT:
		930	RETVAL
1306		931
1307	#endif	932	void
		933	aioreq_nice (int nice = 0)
		934	CODE:
		935	nice = next_pri - nice;
		936	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		937	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		938	next_pri = nice + EIO_PRI_BIAS;
1308		939
1309	void	940	void
1310	flush ()	941	flush ()
1311	PROTOTYPE:	942	PROTOTYPE:
1312	CODE:	943	CODE:
1313	while (nreqs)	944	while (eio_nreqs ())
1314	{	945	{
1315	poll_wait ();	946	poll_wait ();
1316	poll_cb ();	947	poll_cb ();
1317	}	948	}
1318		949
1319	void	950	int
1320	poll()	951	poll()
1321	PROTOTYPE:	952	PROTOTYPE:
1322	CODE:	953	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	954	poll_wait ();
1326	poll_cb ();	955	RETVAL = poll_cb ();
1327	}	956	OUTPUT:
		957	RETVAL
1328		958
1329	int	959	int
1330	poll_fileno()	960	poll_fileno()
1331	PROTOTYPE:	961	PROTOTYPE:
1332	CODE:	962	CODE:
…		…
1344		974
1345	void	975	void
1346	poll_wait()	976	poll_wait()
1347	PROTOTYPE:	977	PROTOTYPE:
1348	CODE:	978	CODE:
1349	if (nreqs)
1350	poll_wait ();	979	poll_wait ();
1351		980
1352	int	981	int
1353	nreqs()	982	nreqs()
1354	PROTOTYPE:	983	PROTOTYPE:
1355	CODE:	984	CODE:
1356	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
1357	OUTPUT:	986	OUTPUT:
1358	RETVAL	987	RETVAL
1359		988
		989	int
		990	nready()
		991	PROTOTYPE:
		992	CODE:
		993	RETVAL = eio_nready ();
		994	OUTPUT:
		995	RETVAL
		996
		997	int
		998	npending()
		999	PROTOTYPE:
		1000	CODE:
		1001	RETVAL = eio_npending ();
		1002	OUTPUT:
		1003	RETVAL
		1004
		1005	int
		1006	nthreads()
		1007	PROTOTYPE:
		1008	CODE:
		1009	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1010	RETVAL = started;
		1011	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1012	OUTPUT:
		1013	RETVAL
		1014
		1015	void _on_next_submit (SV *cb)
		1016	CODE:
		1017	SvREFCNT_dec (on_next_submit);
		1018	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1019
1360	PROTOTYPES: DISABLE	1020	PROTOTYPES: DISABLE
1361		1021
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1023
1364	void	1024	void
1365	cancel (aio_req_ornot req)	1025	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1026	CODE:
1368	req_cancel (req);	1027	eio_cancel (req);
1369		1028
1370	void	1029	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1030	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1372	CODE:	1031	CODE:
1373	SvREFCNT_dec (req->callback);	1032	SvREFCNT_dec (req->callback);
…		…
1378	void	1037	void
1379	add (aio_req grp, ...)	1038	add (aio_req grp, ...)
1380	PPCODE:	1039	PPCODE:
1381	{	1040	{
1382	int i;	1041	int i;
1383	aio_req req;
1384		1042
1385	if (grp->fd == 2)	1043	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1044	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1045
1388	for (i = 1; i < items; ++i )	1046	for (i = 1; i < items; ++i )
1389	{	1047	{
		1048	aio_req req;
		1049
1390	if (GIMME_V != G_VOID)	1050	if (GIMME_V != G_VOID)
1391	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1392		1052
1393	req = SvAIO_REQ (ST (i));	1053	req = SvAIO_REQ (ST (i));
1394		1054
1395	if (req)	1055	if (req)
1396	{	1056	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	}	1057	}
1408	}
1409	}	1058	}
		1059
		1060	void
		1061	cancel_subs (aio_req_ornot req)
		1062	CODE:
		1063	req_cancel_subs (req);
1410		1064
1411	void	1065	void
1412	result (aio_req grp, ...)	1066	result (aio_req grp, ...)
1413	CODE:	1067	CODE:
1414	{	1068	{
1415	int i;	1069	int i;
		1070	AV *av;
		1071
		1072	grp->errorno = errno;
		1073
1416	AV *av = newAV ();	1074	av = newAV ();
1417		1075
1418	for (i = 1; i < items; ++i )	1076	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1077	av_push (av, newSVsv (ST (i)));
1420		1078
1421	SvREFCNT_dec (grp->data);	1079	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1080	grp->sv1 = (SV *)av;
1423	}	1081	}
1424		1082
1425	void	1083	void
		1084	errno (aio_req grp, int errorno = errno)
		1085	CODE:
		1086	grp->errorno = errorno;
		1087
		1088	void
1426	feed_limit (aio_req grp, int limit)	1089	limit (aio_req grp, int limit)
1427	CODE:	1090	CODE:
1428	grp->fd2 = limit;	1091	eio_grp_limit (grp, limit);
1429	aio_grp_feed (grp);
1430		1092
1431	void	1093	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1095	CODE:
1434	{	1096	{
1435	SvREFCNT_dec (grp->fh2);	1097	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1098	grp->sv2 = newSVsv (callback);
1437		1099
1438	if (grp->fd2 <= 0)	1100	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1101	grp->int2 = 2;
1440		1102
1441	aio_grp_feed (grp);	1103	eio_grp_limit (grp, grp->int2);
1442	}	1104	}
1443		1105

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