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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.53 by root, Mon Oct 23 00:17:07 2006 UTC vs.
Revision 1.121 by root, Tue May 13 18:50:27 2008 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
23		17
24	#if HAVE_SENDFILE	18	/* perl namespace pollution */
25	# if __linux	19	#undef VERSION
26	# include <sys/sendfile.h>	20
27	# elif __freebsd	21	#ifdef _WIN32
28	# include <sys/socket.h>	22
29	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	24	# undef malloc
31	# include <sys/socket.h>	25	# undef free
32	# elif __solaris /* not yet */	26
33	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
34	# else	59	#else
35	# error sendfile support requested but not available	60
36	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
37	#endif	68	#endif
38		69
39	/* used for struct dirent, AIX doesn't provide it */	70	#define EIO_STRUCT_STAT Stat_t
40	#ifndef NAME_MAX	71
41	# 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
42	#endif	77	#endif
43		78
44	#if __ia64	79	static HV *stash;
45	# define STACKSIZE 65536	80	typedef SV SV8; /* byte-sv, used for argument-checking */
46	#else
47	# define STACKSIZE 8192
48	#endif
49
50	enum {
51	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};
63		81
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		84
67	typedef struct aio_cb	85	#define EIO_REQ_MEMBERS \
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;	86	SV *callback; \
76	SV *fh, *fh2;	87	SV *sv1, *sv2; \
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;	88	STRLEN stroffset; \
87	mode_t mode; /* open */	89	SV *self;
88	unsigned char cancelled;
89	} aio_cb;
90		90
		91	#include "libeio/eio.h"
		92
		93	static int req_invoke (eio_req *req);
		94	#define EIO_FINISH(req) req_invoke (req)
		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)
		99
		100	enum {
		101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		102	};
		103
		104	#include "libeio/eio.c"
		105
91	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
93		108
94	static int started, wanted;	109	static SV *on_next_submit;
95	static volatile int nreqs;	110	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	111	static int max_outstanding;
97	static int respipe [2];
98		112
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		114
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	115	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	116	static void req_cancel (aio_req req);
107	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	}
108		131
109	/* must be called at most once */	132	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
111	{	134	{
112	if (!req->self)	135	if (!req->self)
…		…
130	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	154	}
132		155
133	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
134	{	157	{
135	while (grp->length < grp->fd2)	158	if (grp->sv2 && SvOK (grp->sv2))
136	{	159	{
137	int old_len = grp->length;	160	dSP;
138		161
139	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)
140	{	206	{
141	dSP;	207	case EIO_READDIR:
		208	{
		209	SV *rv = &PL_sv_undef;
142		210
143	ENTER;	211	if (req->result >= 0)
144	SAVETMPS;	212	{
145	PUSHMARK (SP);	213	int i;
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	char *buf = req->ptr2;
147	PUTBACK;	215	AV *av = newAV ();
148	call_sv (grp->fh2, G_VOID | G_EVAL);	216
149	SPAGAIN;	217	av_extend (av, req->result - 1);
150	FREETMPS;	218
151	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;
152	}	311	}
153		312
154	/* stop if no progress has been made */	313	errno = req->errorno;
155	if (old_len == grp->length)	314
156	{	315	PUTBACK;
157	SvREFCNT_dec (grp->fh2);	316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
158	grp->fh2 = 0;	317	SPAGAIN;
159	break;	318
160	}	319	FREETMPS;
		320	LEAVE;
		321
		322	PUTBACK;
161	}	323	}
162	}
163		324
164	static void aio_grp_dec (aio_req grp)	325	return !!SvTRUE (ERRSV);
165	{
166	--grp->length;
167
168	/* call feeder, if applicable */
169	aio_grp_feed (grp);
170
171	/* finish, if done */
172	if (!grp->length && grp->fd)
173	{
174	req_invoke (grp);
175	req_free (grp);
176	}
177	}	326	}
178		327
179	static void poll_wait ()
180	{
181	if (nreqs && !ress)
182	{
183	fd_set rfd;
184	FD_ZERO(&rfd);
185	FD_SET(respipe [0], &rfd);
186
187	select (respipe [0] + 1, &rfd, 0, 0, 0);
188	}
189	}
190
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_SLEEP:
265	break;
266
267	default:
268	PUSHs (sv_2mortal (newSViv (req->result)));
269	break;
270	}
271
272
273	PUTBACK;
274	call_sv (req->callback, G_VOID | G_EVAL);
275	SPAGAIN;
276
277	FREETMPS;
278	LEAVE;
279
280	errno = errorno;
281
282	if (SvTRUE (ERRSV))
283	{
284	req_free (req);
285	croak (0);
286	}
287	}
288
289	static void req_free (aio_req req)	328	static void req_destroy (aio_req req)
290	{	329	{
291	if (req->grp)
292	{
293	aio_req grp = req->grp;
294
295	/* unlink request */
296	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
297	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
298
299	if (grp->grp_first == req)
300	grp->grp_first = req->grp_next;
301
302	aio_grp_dec (grp);
303	}
304
305	if (req->self)	330	if (req->self)
306	{	331	{
307	sv_unmagic (req->self, PERL_MAGIC_ext);	332	sv_unmagic (req->self, PERL_MAGIC_ext);
308	SvREFCNT_dec (req->self);	333	SvREFCNT_dec (req->self);
309	}	334	}
310		335
311	SvREFCNT_dec (req->data);
312	SvREFCNT_dec (req->fh);	336	SvREFCNT_dec (req->sv1);
313	SvREFCNT_dec (req->fh2);	337	SvREFCNT_dec (req->sv2);
314	SvREFCNT_dec (req->callback);	338	SvREFCNT_dec (req->callback);
315	Safefree (req->statdata);
316
317	if (req->type == REQ_READDIR && req->result >= 0)
318	free (req->data2ptr);
319		339
320	Safefree (req);	340	Safefree (req);
321	}	341	}
322		342
323	static void req_cancel (aio_req req)	343	static void req_cancel_subs (aio_req grp)
324	{	344	{
325	req->cancelled = 1;	345	aio_req sub;
326		346
327	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)
328	{	378	{
329	aio_req sub;	379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		380	croak ("unable to initialize result pipe(2)");
330		381
331	for (sub = req->grp_first; sub; sub = sub->grp_next)	382	respipe_close (respipe [0]);
332	req_cancel (sub);	383	respipe [0] = old_readfd;
333	}	384	}
334	}
335		385
336	static int poll_cb ()	386	#ifdef _WIN32
337	{	387	int arg = 1;
338	dSP;	388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
339	int count = 0;	389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
340	int do_croak = 0;	390	#else
341	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)");
342		395
343	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 ())
344	{	405	{
345	pthread_mutex_lock (&reslock);	406	int size;
346	req = ress;
347		407
		408	X_LOCK (reslock);
		409	size = res_queue.size;
		410	X_UNLOCK (reslock);
		411
348	if (req)	412	if (size)
349	{
350	ress = req->next;
351
352	if (!ress)
353	{
354	/* read any signals sent by the worker threads */
355	char buf [32];
356	while (read (respipe [0], buf, 32) == 32)
357	;
358
359	rese = 0;
360	}
361	}
362
363	pthread_mutex_unlock (&reslock);
364
365	if (!req)
366	break;	413	return;
367		414
368	--nreqs;	415	maybe_start_thread ();
369		416
370	if (req->type == REQ_QUIT)	417	FD_ZERO (&rfd);
371	started--;	418	FD_SET (respipe [0], &rfd);
372	else if (req->type == REQ_GROUP && req->length)
373	{
374	req->fd = 1; /* mark request as delayed */
375	continue;
376	}
377	else
378	{
379	if (req->type == REQ_READ)
380	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
381		419
382	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	420	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
383	SvREADONLY_off (req->data);
384
385	if (req->statdata)
386	{
387	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
388	PL_laststatval = req->result;
389	PL_statcache = *(req->statdata);
390	}
391
392	req_invoke (req);
393
394	count++;
395	}
396
397	req_free (req);
398	}	421	}
399
400	return count;
401	}	422	}
402		423
403	static void *aio_proc(void *arg);	424	static int poll_cb (void)
404
405	static void start_thread (void)
406	{	425	{
407	sigset_t fullsigset, oldsigset;	426	int res;
408	pthread_t tid;
409	pthread_attr_t attr;
410		427
411	pthread_attr_init (&attr);	428	do
412	pthread_attr_setstacksize (&attr, STACKSIZE);
413	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
414
415	sigfillset (&fullsigset);
416	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
417
418	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
419	started++;
420
421	sigprocmask (SIG_SETMASK, &oldsigset, 0);
422	}
423
424	static void req_send (aio_req req)
425	{
426	while (started < wanted && nreqs >= started)
427	start_thread ();
428
429	++nreqs;
430
431	pthread_mutex_lock (&reqlock);
432
433	req->next = 0;
434
435	if (reqe)
436	{	429	{
437	reqe->next = req;	430	res = eio_poll ();
438	reqe = req;	431
		432	if (res > 0)
		433	croak (0);
439	}	434	}
440	else	435	while (max_outstanding && max_outstanding <= eio_nreqs ());
441	reqe = reqs = req;
442
443	pthread_cond_signal (&reqwait);
444	pthread_mutex_unlock (&reqlock);
445
446	if (nreqs > max_outstanding)
447	for (;;)
448	{
449	poll_cb ();
450
451	if (nreqs <= max_outstanding)
452	break;
453
454	poll_wait ();
455	}
456	}
457
458	static void end_thread (void)
459	{
460	aio_req req;
461	Newz (0, req, 1, aio_cb);
462	req->type = REQ_QUIT;
463
464	req_send (req);
465	}
466
467	static void min_parallel (int nthreads)
468	{
469	if (wanted < nthreads)
470	wanted = nthreads;
471	}
472
473	static void max_parallel (int nthreads)
474	{
475	int cur = started;
476
477	if (wanted > nthreads)
478	wanted = nthreads;
479
480	while (cur > wanted)
481	{
482	end_thread ();
483	cur--;
484	}
485
486	while (started > wanted)
487	{
488	poll_wait ();
489	poll_cb ();
490	}
491	}
492
493	static void create_pipe ()
494	{
495	if (pipe (respipe))
496	croak ("unable to initialize result pipe");
497
498	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
499	croak ("cannot set result pipe to nonblocking mode");
500
501	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
502	croak ("cannot set result pipe to nonblocking mode");
503	}
504
505	/*****************************************************************************/
506	/* work around various missing functions */
507
508	#if !HAVE_PREADWRITE
509	# define pread aio_pread
510	# define pwrite aio_pwrite
511
512	/*
513	* make our pread/pwrite safe against themselves, but not against
514	* normal read/write by using a mutex. slows down execution a lot,
515	* but that's your problem, not mine.
516	*/
517	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
518
519	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
520	{
521	ssize_t res;
522	off_t ooffset;
523
524	pthread_mutex_lock (&preadwritelock);
525	ooffset = lseek (fd, 0, SEEK_CUR);
526	lseek (fd, offset, SEEK_SET);
527	res = read (fd, buf, count);
528	lseek (fd, ooffset, SEEK_SET);
529	pthread_mutex_unlock (&preadwritelock);
530		436
531	return res;	437	return res;
532	}	438	}
533		439
534	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
535	{
536	ssize_t res;
537	off_t ooffset;
538
539	pthread_mutex_lock (&preadwritelock);
540	ooffset = lseek (fd, 0, SEEK_CUR);
541	lseek (fd, offset, SEEK_SET);
542	res = write (fd, buf, count);
543	lseek (fd, offset, SEEK_SET);
544	pthread_mutex_unlock (&preadwritelock);
545
546	return res;
547	}
548	#endif
549
550	#if !HAVE_FDATASYNC
551	# define fdatasync fsync
552	#endif
553
554	#if !HAVE_READAHEAD
555	# define readahead aio_readahead
556
557	static ssize_t readahead (int fd, off_t offset, size_t count)
558	{
559	char readahead_buf[4096];
560
561	while (count > 0)
562	{
563	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
564
565	pread (fd, readahead_buf, len, offset);
566	offset += len;
567	count -= len;
568	}
569
570	errno = 0;
571	}
572	#endif
573
574	#if !HAVE_READDIR_R
575	# define readdir_r aio_readdir_r
576
577	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
578
579	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
580	{
581	struct dirent *e;
582	int errorno;
583
584	pthread_mutex_lock (&readdirlock);
585
586	e = readdir (dirp);
587	errorno = errno;
588
589	if (e)
590	{
591	*res = ent;
592	strcpy (ent->d_name, e->d_name);
593	}
594	else
595	*res = 0;
596
597	pthread_mutex_unlock (&readdirlock);
598
599	errno = errorno;
600	return e ? 0 : -1;
601	}
602	#endif
603
604	/* sendfile always needs emulation */
605	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
606	{
607	ssize_t res;
608
609	if (!count)
610	return 0;
611
612	#if HAVE_SENDFILE
613	# if __linux
614	res = sendfile (ofd, ifd, &offset, count);
615
616	# elif __freebsd
617	/*
618	* Of course, the freebsd sendfile is a dire hack with no thoughts
619	* wasted on making it similar to other I/O functions.
620	*/
621	{
622	off_t sbytes;
623	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
624
625	if (res < 0 && sbytes)
626	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
627	res = sbytes;
628	}
629
630	# elif __hpux
631	res = sendfile (ofd, ifd, offset, count, 0, 0);
632
633	# elif __solaris
634	{
635	struct sendfilevec vec;
636	size_t sbytes;
637
638	vec.sfv_fd = ifd;
639	vec.sfv_flag = 0;
640	vec.sfv_off = offset;
641	vec.sfv_len = count;
642
643	res = sendfilev (ofd, &vec, 1, &sbytes);
644
645	if (res < 0 && sbytes)
646	res = sbytes;
647	}
648
649	# endif
650	#else
651	res = -1;
652	errno = ENOSYS;
653	#endif
654
655	if (res < 0
656	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
657	#if __solaris
658	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
659	#endif
660	)
661	)
662	{
663	/* emulate sendfile. this is a major pain in the ass */
664	char buf[4096];
665	res = 0;
666
667	while (count)
668	{
669	ssize_t cnt;
670
671	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
672
673	if (cnt <= 0)
674	{
675	if (cnt && !res) res = -1;
676	break;
677	}
678
679	cnt = write (ofd, buf, cnt);
680
681	if (cnt <= 0)
682	{
683	if (cnt && !res) res = -1;
684	break;
685	}
686
687	offset += cnt;
688	res += cnt;
689	count -= cnt;
690	}
691	}
692
693	return res;
694	}
695
696	/* read a full directory */
697	static int scandir_ (const char *path, void **namesp)
698	{
699	DIR *dirp = opendir (path);
700	union
701	{
702	struct dirent d;
703	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
704	} u;
705	struct dirent *entp;
706	char *name, *names;
707	int memlen = 4096;
708	int memofs = 0;
709	int res = 0;
710	int errorno;
711
712	if (!dirp)
713	return -1;
714
715	names = malloc (memlen);
716
717	for (;;)
718	{
719	errno = 0, readdir_r (dirp, &u.d, &entp);
720
721	if (!entp)
722	break;
723
724	name = entp->d_name;
725
726	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
727	{
728	int len = strlen (name) + 1;
729
730	res++;
731
732	while (memofs + len > memlen)
733	{
734	memlen *= 2;
735	names = realloc (names, memlen);
736	if (!names)
737	break;
738	}
739
740	memcpy (names + memofs, name, len);
741	memofs += len;
742	}
743	}
744
745	errorno = errno;
746	closedir (dirp);
747
748	if (errorno)
749	{
750	free (names);
751	errno = errorno;
752	res = -1;
753	}
754
755	*namesp = (void *)names;
756	return res;
757	}
758
759	/*****************************************************************************/
760
761	static void *aio_proc (void *thr_arg)
762	{
763	aio_req req;
764	int type;
765
766	do
767	{
768	pthread_mutex_lock (&reqlock);
769
770	for (;;)
771	{
772	req = reqs;
773
774	if (reqs)
775	{
776	reqs = reqs->next;
777	if (!reqs) reqe = 0;
778	}
779
780	if (req)
781	break;
782
783	pthread_cond_wait (&reqwait, &reqlock);
784	}
785
786	pthread_mutex_unlock (&reqlock);
787
788	errno = 0; /* strictly unnecessary */
789
790	if (!req->cancelled)
791	switch (type = req->type) /* remember type for QUIT check */
792	{
793	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
794	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
795
796	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
797	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
798
799	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
800	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
801	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
802
803	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
804	case REQ_CLOSE: req->result = close (req->fd); break;
805	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
806	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
807	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
808	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
809	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
810
811	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
812	case REQ_FSYNC: req->result = fsync (req->fd); break;
813	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
814
815	case REQ_SLEEP:
816	{
817	struct timeval tv;
818
819	tv.tv_sec = req->fd;
820	tv.tv_usec = req->fd2;
821
822	req->result = select (0, 0, 0, 0, &tv);
823	}
824
825	case REQ_QUIT:
826	break;
827
828	default:
829	req->result = ENOSYS;
830	break;
831	}
832
833	req->errorno = errno;
834
835	pthread_mutex_lock (&reslock);
836
837	req->next = 0;
838
839	if (rese)
840	{
841	rese->next = req;
842	rese = req;
843	}
844	else
845	{
846	rese = ress = req;
847
848	/* write a dummy byte to the pipe so fh becomes ready */
849	write (respipe [1], &respipe, 1);
850	}
851
852	pthread_mutex_unlock (&reslock);
853	}
854	while (type != REQ_QUIT);
855
856	return 0;
857	}
858
859	/*****************************************************************************/
860
861	static void atfork_prepare (void)
862	{
863	pthread_mutex_lock (&reqlock);
864	pthread_mutex_lock (&reslock);
865	#if !HAVE_PREADWRITE
866	pthread_mutex_lock (&preadwritelock);
867	#endif
868	#if !HAVE_READDIR_R
869	pthread_mutex_lock (&readdirlock);
870	#endif
871	}
872
873	static void atfork_parent (void)
874	{
875	#if !HAVE_READDIR_R
876	pthread_mutex_unlock (&readdirlock);
877	#endif
878	#if !HAVE_PREADWRITE
879	pthread_mutex_unlock (&preadwritelock);
880	#endif
881	pthread_mutex_unlock (&reslock);
882	pthread_mutex_unlock (&reqlock);
883	}
884
885	static void atfork_child (void)	440	static void atfork_child (void)
886	{	441	{
887	aio_req prv;
888
889	started = 0;
890
891	while (reqs)
892	{
893	prv = reqs;
894	reqs = prv->next;
895	req_free (prv);
896	}
897
898	reqs = reqe = 0;
899
900	while (ress)
901	{
902	prv = ress;
903	ress = prv->next;
904	req_free (prv);
905	}
906
907	ress = rese = 0;
908
909	close (respipe [0]);
910	close (respipe [1]);
911	create_pipe ();	442	create_respipe ();
912
913	atfork_parent ();
914	}	443	}
915		444
916	#define dREQ \	445	#define dREQ \
917	aio_req req; \	446	aio_req req; \
		447	int req_pri = next_pri; \
		448	next_pri = EIO_PRI_DEFAULT; \
918	\	449	\
919	if (SvOK (callback) && !SvROK (callback)) \	450	if (SvOK (callback) && !SvROK (callback)) \
920	croak ("callback must be undef or of reference type"); \	451	croak ("callback must be undef or of reference type"); \
921	\	452	\
922	Newz (0, req, 1, aio_cb); \	453	Newz (0, req, 1, eio_req); \
923	if (!req) \	454	if (!req) \
924	croak ("out of memory during aio_req allocation"); \	455	croak ("out of memory during eio_req allocation"); \
925	\	456	\
926	req->callback = newSVsv (callback)	457	req->callback = newSVsv (callback); \
		458	req->pri = req_pri
927		459
928	#define REQ_SEND \	460	#define REQ_SEND \
929	req_send (req); \	461	req_submit (req); \
930	\	462	\
931	if (GIMME_V != G_VOID) \	463	if (GIMME_V != G_VOID) \
932	XPUSHs (req_sv (req, AIO_REQ_KLASS));	464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
933		465
934	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
935		467
936	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
937		469
938	BOOT:	470	BOOT:
939	{	471	{
940	HV *stash = gv_stashpv ("IO::AIO", 1);	472	stash = gv_stashpv ("IO::AIO", 1);
		473
941	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
942	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
943	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);
944		486
945	create_pipe ();	487	X_COND_CHECK (reqwait);
946	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	488	#else
947	}	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		490	#endif
948		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
949	void	501	void
950	min_parallel (nthreads)	502	max_poll_reqs (int nreqs)
951	int nthreads
952	PROTOTYPE: $	503	PROTOTYPE: $
		504	CODE:
		505	eio_set_max_poll_reqs (nreqs);
953		506
954	void	507	void
955	max_parallel (nthreads)	508	max_poll_time (double nseconds)
956	int nthreads
957	PROTOTYPE: $	509	PROTOTYPE: $
958
959	int
960	max_outstanding (nreqs)
961	int nreqs
962	PROTOTYPE: $
963	CODE:	510	CODE:
964	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:
965	max_outstanding = nreqs;	535	max_outstanding = maxreqs;
966		536
967	void	537	void
968	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	538	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
969	SV * pathname
970	int flags
971	int mode
972	SV * callback
973	PROTOTYPE: $$$;$	539	PROTOTYPE: $$$;$
974	PPCODE:	540	PPCODE:
975	{	541	{
976	dREQ;	542	dREQ;
977		543
978	req->type = REQ_OPEN;	544	req->type = EIO_OPEN;
979	req->data = newSVsv (pathname);	545	req->sv1 = newSVsv (pathname);
980	req->dataptr = SvPVbyte_nolen (req->data);	546	req->ptr1 = SvPVbyte_nolen (req->sv1);
981	req->fd = flags;	547	req->int1 = flags;
982	req->mode = mode;	548	req->int2 = mode;
983		549
984	REQ_SEND;	550	REQ_SEND;
985	}	551	}
986		552
987	void	553	void
988	aio_close (fh,callback=&PL_sv_undef)	554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
989	SV * fh
990	SV * callback
991	PROTOTYPE: $;$	555	PROTOTYPE: $;$
992	ALIAS:	556	ALIAS:
993	aio_close = REQ_CLOSE
994	aio_fsync = REQ_FSYNC	557	aio_fsync = EIO_FSYNC
995	aio_fdatasync = REQ_FDATASYNC	558	aio_fdatasync = EIO_FDATASYNC
996	PPCODE:	559	PPCODE:
997	{	560	{
998	dREQ;	561	dREQ;
999		562
1000	req->type = ix;	563	req->type = ix;
1001	req->fh = newSVsv (fh);	564	req->sv1 = newSVsv (fh);
1002	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1003		566
1004	REQ_SEND (req);	567	REQ_SEND (req);
1005	}	568	}
1006		569
1007	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
1008	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)
1009	SV * fh
1010	UV offset
1011	UV length
1012	SV * data
1013	UV dataoffset
1014	SV * callback
1015	ALIAS:	600	ALIAS:
1016	aio_read = REQ_READ	601	aio_read = EIO_READ
1017	aio_write = REQ_WRITE	602	aio_write = EIO_WRITE
1018	PROTOTYPE: $$$$$;$	603	PROTOTYPE: $$$$$;$
1019	PPCODE:	604	PPCODE:
1020	{	605	{
1021	aio_req req;
1022	STRLEN svlen;	606	STRLEN svlen;
1023	char *svptr = SvPVbyte (data, svlen);	607	char *svptr = SvPVbyte (data, svlen);
		608	UV len = SvUV (length);
1024		609
1025	SvUPGRADE (data, SVt_PV);	610	SvUPGRADE (data, SVt_PV);
1026	SvPOK_on (data);	611	SvPOK_on (data);
1027		612
1028	if (dataoffset < 0)	613	if (dataoffset < 0)
1029	dataoffset += svlen;	614	dataoffset += svlen;
1030		615
1031	if (dataoffset < 0 || dataoffset > svlen)	616	if (dataoffset < 0 || dataoffset > svlen)
1032	croak ("data offset outside of string");	617	croak ("dataoffset outside of data scalar");
1033		618
1034	if (ix == REQ_WRITE)	619	if (ix == EIO_WRITE)
1035	{	620	{
1036	/* write: check length and adjust. */	621	/* write: check length and adjust. */
1037	if (length < 0 || length + dataoffset > svlen)	622	if (!SvOK (length) || len + dataoffset > svlen)
1038	length = svlen - dataoffset;	623	len = svlen - dataoffset;
1039	}	624	}
1040	else	625	else
1041	{	626	{
1042	/* read: grow scalar as necessary */	627	/* read: grow scalar as necessary */
1043	svptr = SvGROW (data, length + dataoffset);	628	svptr = SvGROW (data, len + dataoffset + 1);
1044	}	629	}
1045		630
1046	if (length < 0)	631	if (len < 0)
1047	croak ("length must not be negative");	632	croak ("length must not be negative");
1048		633
1049	{	634	{
1050	dREQ;	635	dREQ;
1051		636
1052	req->type = ix;	637	req->type = ix;
1053	req->fh = newSVsv (fh);	638	req->sv1 = newSVsv (fh);
1054	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1055	: IoOFP (sv_2io (fh)));	640	: IoOFP (sv_2io (fh)));
		641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1056	req->offset = offset;	642	req->size = len;
1057	req->length = length;
1058	req->data = SvREFCNT_inc (data);	643	req->sv2 = SvREFCNT_inc (data);
1059	req->dataptr = (char *)svptr + dataoffset;	644	req->ptr2 = (char *)svptr + dataoffset;
		645	req->stroffset = dataoffset;
1060		646
1061	if (!SvREADONLY (data))	647	if (!SvREADONLY (data))
1062	{	648	{
1063	SvREADONLY_on (data);	649	SvREADONLY_on (data);
1064	req->data2ptr = (void *)data;	650	req->flags |= FLAG_SV2_RO_OFF;
1065	}	651	}
1066		652
1067	REQ_SEND;	653	REQ_SEND;
1068	}	654	}
1069	}	655	}
1070		656
1071	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
1072	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)
1073	SV * out_fh
1074	SV * in_fh
1075	UV in_offset
1076	UV length
1077	SV * callback
1078	PROTOTYPE: $$$$;$	674	PROTOTYPE: $$$$;$
1079	PPCODE:	675	PPCODE:
1080	{	676	{
1081	dREQ;	677	dREQ;
1082		678
1083	req->type = REQ_SENDFILE;	679	req->type = EIO_SENDFILE;
1084	req->fh = newSVsv (out_fh);	680	req->sv1 = newSVsv (out_fh);
1085	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1086	req->fh2 = newSVsv (in_fh);	682	req->sv2 = newSVsv (in_fh);
1087	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1088	req->offset = in_offset;	684	req->offs = SvVAL64 (in_offset);
1089	req->length = length;	685	req->size = length;
1090		686
1091	REQ_SEND;	687	REQ_SEND;
1092	}	688	}
1093		689
1094	void	690	void
1095	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	691	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1096	SV * fh
1097	UV offset
1098	IV length
1099	SV * callback
1100	PROTOTYPE: $$$;$	692	PROTOTYPE: $$$;$
1101	PPCODE:	693	PPCODE:
1102	{	694	{
1103	dREQ;	695	dREQ;
1104		696
1105	req->type = REQ_READAHEAD;	697	req->type = EIO_READAHEAD;
1106	req->fh = newSVsv (fh);	698	req->sv1 = newSVsv (fh);
1107	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1108	req->offset = offset;	700	req->offs = SvVAL64 (offset);
1109	req->length = length;	701	req->size = length;
1110		702
1111	REQ_SEND;	703	REQ_SEND;
1112	}	704	}
1113		705
1114	void	706	void
1115	aio_stat (fh_or_path,callback=&PL_sv_undef)	707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1116	SV * fh_or_path
1117	SV * callback
1118	ALIAS:	708	ALIAS:
1119	aio_stat = REQ_STAT	709	aio_stat = EIO_STAT
1120	aio_lstat = REQ_LSTAT	710	aio_lstat = EIO_LSTAT
1121	PPCODE:	711	PPCODE:
1122	{	712	{
1123	dREQ;	713	dREQ;
1124		714
1125	New (0, req->statdata, 1, Stat_t);	715	req->sv1 = newSVsv (fh_or_path);
1126	if (!req->statdata)
1127	{
1128	req_free (req);
1129	croak ("out of memory during aio_req->statdata allocation");
1130	}
1131		716
1132	if (SvPOK (fh_or_path))	717	if (SvPOK (req->sv1))
1133	{	718	{
1134	req->type = ix;	719	req->type = ix;
1135	req->data = newSVsv (fh_or_path);
1136	req->dataptr = SvPVbyte_nolen (req->data);	720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	}	721	}
1138	else	722	else
1139	{	723	{
1140	req->type = REQ_FSTAT;	724	req->type = EIO_FSTAT;
1141	req->fh = newSVsv (fh_or_path);
1142	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1143	}	726	}
1144		727
1145	REQ_SEND;	728	REQ_SEND;
1146	}	729	}
1147		730
1148	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 = ix;
		793	req->ptr1 = SvPVbyte_nolen (req->sv1);
		794	}
		795	else
		796	{
		797	req->type = EIO_FCHMOD;
		798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		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
1149	aio_unlink (pathname,callback=&PL_sv_undef)	829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	SV * callback
1152	ALIAS:	830	ALIAS:
1153	aio_unlink = REQ_UNLINK	831	aio_unlink = EIO_UNLINK
1154	aio_rmdir = REQ_RMDIR	832	aio_rmdir = EIO_RMDIR
1155	aio_readdir = REQ_READDIR	833	aio_readdir = EIO_READDIR
1156	PPCODE:	834	PPCODE:
1157	{	835	{
1158	dREQ;	836	dREQ;
1159		837
1160	req->type = ix;	838	req->type = ix;
1161	req->data = newSVsv (pathname);	839	req->sv1 = newSVsv (pathname);
1162	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);
1163		860
1164	REQ_SEND;	861	REQ_SEND;
1165	}	862	}
1166		863
1167	void	864	void
1168	aio_link (oldpath,newpath,callback=&PL_sv_undef)	865	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1169	SV * oldpath
1170	SV * newpath
1171	SV * callback
1172	ALIAS:
1173	aio_link = REQ_LINK
1174	aio_symlink = REQ_SYMLINK
1175	aio_rename = REQ_RENAME
1176	PPCODE:	866	PPCODE:
1177	{	867	{
1178	dREQ;	868	dREQ;
1179		869
1180	req->type = ix;	870	req->type = EIO_MKNOD;
1181	req->fh = newSVsv (oldpath);	871	req->sv1 = newSVsv (pathname);
1182	req->data2ptr = SvPVbyte_nolen (req->fh);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	req->data = newSVsv (newpath);	873	req->int2 = (mode_t)mode;
1184	req->dataptr = SvPVbyte_nolen (req->data);	874	req->offs = dev;
1185		875
1186	REQ_SEND;	876	REQ_SEND;
1187	}	877	}
1188		878
1189	void	879	void
1190	aio_sleep (delay,callback=&PL_sv_undef)	880	aio_busy (double delay, SV *callback=&PL_sv_undef)
1191	double delay
1192	SV * callback
1193	PPCODE:	881	PPCODE:
1194	{	882	{
1195	dREQ;	883	dREQ;
1196		884
1197	req->type = REQ_SLEEP;	885	req->type = EIO_BUSY;
1198	req->fd = delay < 0. ? 0 : delay;	886	req->nv1 = delay < 0. ? 0. : delay;
1199	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1200		887
1201	REQ_SEND;	888	REQ_SEND;
1202	}	889	}
1203		890
1204	void	891	void
1205	aio_group (callback=&PL_sv_undef)	892	aio_group (SV *callback=&PL_sv_undef)
1206	SV * callback
1207	PROTOTYPE: ;$	893	PROTOTYPE: ;$
1208	PPCODE:	894	PPCODE:
1209	{	895	{
1210	dREQ;	896	dREQ;
		897
1211	req->type = REQ_GROUP;	898	req->type = EIO_GROUP;
		899
1212	req_send (req);	900	eio_submit (req);
1213	XPUSHs (req_sv (req, AIO_GRP_KLASS));	901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1214	}	902	}
		903
		904	void
		905	aio_nop (SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_nop = EIO_NOP
		908	aio_sync = EIO_SYNC
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->type = ix;
		914
		915	REQ_SEND;
		916	}
		917
		918	int
		919	aioreq_pri (int pri = 0)
		920	PROTOTYPE: ;$
		921	CODE:
		922	RETVAL = next_pri;
		923	if (items > 0)
		924	{
		925	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		926	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		927	next_pri = pri;
		928	}
		929	OUTPUT:
		930	RETVAL
		931
		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;
1215		939
1216	void	940	void
1217	flush ()	941	flush ()
1218	PROTOTYPE:	942	PROTOTYPE:
1219	CODE:	943	CODE:
1220	while (nreqs)	944	while (eio_nreqs ())
1221	{	945	{
1222	poll_wait ();	946	poll_wait ();
1223	poll_cb ();	947	poll_cb ();
1224	}	948	}
1225		949
1226	void	950	int
1227	poll()	951	poll()
1228	PROTOTYPE:	952	PROTOTYPE:
1229	CODE:	953	CODE:
1230	if (nreqs)
1231	{
1232	poll_wait ();	954	poll_wait ();
1233	poll_cb ();	955	RETVAL = poll_cb ();
1234	}	956	OUTPUT:
		957	RETVAL
1235		958
1236	int	959	int
1237	poll_fileno()	960	poll_fileno()
1238	PROTOTYPE:	961	PROTOTYPE:
1239	CODE:	962	CODE:
…		…
1251		974
1252	void	975	void
1253	poll_wait()	976	poll_wait()
1254	PROTOTYPE:	977	PROTOTYPE:
1255	CODE:	978	CODE:
1256	if (nreqs)
1257	poll_wait ();	979	poll_wait ();
1258		980
1259	int	981	int
1260	nreqs()	982	nreqs()
1261	PROTOTYPE:	983	PROTOTYPE:
1262	CODE:	984	CODE:
1263	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
1264	OUTPUT:	986	OUTPUT:
1265	RETVAL	987	RETVAL
1266		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
1267	PROTOTYPES: DISABLE	1020	PROTOTYPES: DISABLE
1268		1021
1269	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1270		1023
1271	void	1024	void
1272	cancel (aio_req_ornot req)	1025	cancel (aio_req_ornot req)
1273	PROTOTYPE:
1274	CODE:	1026	CODE:
1275	req_cancel (req);	1027	eio_cancel (req);
		1028
		1029	void
		1030	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1031	CODE:
		1032	SvREFCNT_dec (req->callback);
		1033	req->callback = newSVsv (callback);
1276		1034
1277	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1035	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1278		1036
1279	void	1037	void
1280	add (aio_req grp, ...)	1038	add (aio_req grp, ...)
1281	PPCODE:	1039	PPCODE:
1282	{	1040	{
1283	int i;	1041	int i;
1284	aio_req req;
1285		1042
1286	if (grp->fd == 2)	1043	if (grp->int1 == 2)
1287	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");
1288		1045
1289	for (i = 1; i < items; ++i )	1046	for (i = 1; i < items; ++i )
1290	{	1047	{
		1048	aio_req req;
		1049
1291	if (GIMME_V != G_VOID)	1050	if (GIMME_V != G_VOID)
1292	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1293		1052
1294	req = SvAIO_REQ (ST (i));	1053	req = SvAIO_REQ (ST (i));
1295		1054
1296	if (req)	1055	if (req)
1297	{	1056	eio_grp_add (grp, req);
1298	++grp->length;
1299	req->grp = grp;
1300
1301	req->grp_prev = 0;
1302	req->grp_next = grp->grp_first;
1303
1304	if (grp->grp_first)
1305	grp->grp_first->grp_prev = req;
1306
1307	grp->grp_first = req;
1308	}	1057	}
1309	}
1310	}	1058	}
		1059
		1060	void
		1061	cancel_subs (aio_req_ornot req)
		1062	CODE:
		1063	req_cancel_subs (req);
1311		1064
1312	void	1065	void
1313	result (aio_req grp, ...)	1066	result (aio_req grp, ...)
1314	CODE:	1067	CODE:
1315	{	1068	{
1316	int i;	1069	int i;
		1070	AV *av;
		1071
		1072	grp->errorno = errno;
		1073
1317	AV *av = newAV ();	1074	av = newAV ();
1318		1075
1319	for (i = 1; i < items; ++i )	1076	for (i = 1; i < items; ++i )
1320	av_push (av, newSVsv (ST (i)));	1077	av_push (av, newSVsv (ST (i)));
1321		1078
1322	SvREFCNT_dec (grp->data);	1079	SvREFCNT_dec (grp->sv1);
1323	grp->data = (SV *)av;	1080	grp->sv1 = (SV *)av;
1324	}	1081	}
1325		1082
1326	void	1083	void
1327	lock (aio_req grp)	1084	errno (aio_req grp, int errorno = errno)
1328	CODE:	1085	CODE:
1329	++grp->length;	1086	grp->errorno = errorno;
1330		1087
1331	void	1088	void
1332	unlock (aio_req grp)
1333	CODE:
1334	aio_grp_dec (grp);
1335
1336	void
1337	feeder_limit (aio_req grp, int limit)	1089	limit (aio_req grp, int limit)
1338	CODE:	1090	CODE:
1339	grp->fd2 = limit;	1091	eio_grp_limit (grp, limit);
1340	aio_grp_feed (grp);
1341		1092
1342	void	1093	void
1343	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
1344	CODE:	1095	CODE:
1345	{	1096	{
1346	SvREFCNT_dec (grp->fh2);	1097	SvREFCNT_dec (grp->sv2);
1347	grp->fh2 = newSVsv (callback);	1098	grp->sv2 = newSVsv (callback);
1348		1099
1349	if (grp->fd2 <= 0)	1100	if (grp->int2 <= 0)
1350	grp->fd2 = 2;	1101	grp->int2 = 2;
1351		1102
1352	aio_grp_feed (grp);	1103	eio_grp_limit (grp, grp->int2);
1353	}	1104	}
1354		1105

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