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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.50 by root, Sun Oct 22 21:13:47 2006 UTC vs.
Revision 1.119 by root, Sun May 11 19:11:05 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_COMMON \
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_DEFAULT_PRI + EIO_PRI_BIAS;
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)
…		…
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	141	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
119	}	142	}
120		143
121	static aio_req SvAIO_REQ (SV *sv)	144	static aio_req SvAIO_REQ (SV *sv)
122	{	145	{
		146	MAGIC *mg;
		147
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	148	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
124	croak ("object of class " AIO_REQ_KLASS " expected");	149	croak ("object of class " AIO_REQ_KLASS " expected");
125		150
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	151	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		152
128	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	154	}
130		155
131	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
132	{	157	{
133	while (grp->length < grp->fd2)	158	if (grp->sv2 && SvOK (grp->sv2))
134	{	159	{
135	int old_len = grp->length;	160	dSP;
136		161
137	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)
138	{	206	{
139	dSP;	207	case EIO_READDIR:
		208	{
		209	SV *rv = &PL_sv_undef;
140		210
141	ENTER;	211	if (req->result >= 0)
142	SAVETMPS;	212	{
143	PUSHMARK (SP);	213	int i;
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	char *buf = req->ptr2;
145	PUTBACK;	215	AV *av = newAV ();
146	call_sv (grp->fh2, G_VOID | G_EVAL);	216
147	SPAGAIN;	217	av_extend (av, req->result - 1);
148	FREETMPS;	218
149	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;
150	}	311	}
151		312
152	/* stop if no progress has been made */	313	errno = req->errorno;
153	if (old_len == grp->length)	314
154	{	315	PUTBACK;
155	SvREFCNT_dec (grp->fh2);	316	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
156	grp->fh2 = 0;	317	SPAGAIN;
157	break;	318
158	}	319	FREETMPS;
		320	LEAVE;
		321
		322	PUTBACK;
159	}	323	}
160	}
161		324
162	static void aio_grp_dec (aio_req grp)	325	return !!SvTRUE (ERRSV);
163	{
164	--grp->length;
165
166	/* call feeder, if applicable */
167	aio_grp_feed (grp);
168
169	/* finish, if done */
170	if (!grp->length && grp->fd)
171	{
172	req_invoke (grp);
173	req_free (grp);
174	}
175	}	326	}
176		327
177	static void poll_wait ()
178	{
179	if (nreqs && !ress)
180	{
181	fd_set rfd;
182	FD_ZERO(&rfd);
183	FD_SET(respipe [0], &rfd);
184
185	select (respipe [0] + 1, &rfd, 0, 0, 0);
186	}
187	}
188
189	static void req_invoke (aio_req req)
190	{
191	dSP;
192	int errorno = errno;
193
194	if (req->cancelled || !SvOK (req->callback))
195	return;
196
197	errno = req->errorno;
198
199	ENTER;
200	SAVETMPS;
201	PUSHMARK (SP);
202	EXTEND (SP, 1);
203
204	switch (req->type)
205	{
206	case REQ_READDIR:
207	{
208	SV *rv = &PL_sv_undef;
209
210	if (req->result >= 0)
211	{
212	char *buf = req->data2ptr;
213	AV *av = newAV ();
214
215	while (req->result)
216	{
217	SV *sv = newSVpv (buf, 0);
218
219	av_push (av, sv);
220	buf += SvCUR (sv) + 1;
221	req->result--;
222	}
223
224	rv = sv_2mortal (newRV_noinc ((SV *)av));
225	}
226
227	PUSHs (rv);
228	}
229	break;
230
231	case REQ_OPEN:
232	{
233	/* convert fd to fh */
234	SV *fh;
235
236	PUSHs (sv_2mortal (newSViv (req->result)));
237	PUTBACK;
238	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
239	SPAGAIN;
240
241	fh = SvREFCNT_inc (POPs);
242
243	PUSHMARK (SP);
244	XPUSHs (sv_2mortal (fh));
245	}
246	break;
247
248	case REQ_GROUP:
249	req->fd = 2; /* mark group as finished */
250
251	if (req->data)
252	{
253	int i;
254	AV *av = (AV *)req->data;
255
256	EXTEND (SP, AvFILL (av) + 1);
257	for (i = 0; i <= AvFILL (av); ++i)
258	PUSHs (*av_fetch (av, i, 0));
259	}
260	break;
261
262	case REQ_SLEEP:
263	break;
264
265	default:
266	PUSHs (sv_2mortal (newSViv (req->result)));
267	break;
268	}
269
270
271	PUTBACK;
272	call_sv (req->callback, G_VOID | G_EVAL);
273	SPAGAIN;
274
275	if (SvTRUE (ERRSV))
276	{
277	req_free (req);
278	croak (0);
279	}
280
281	FREETMPS;
282	LEAVE;
283
284	errno = errorno;
285	}
286
287	static void req_free (aio_req req)	328	static void req_destroy (aio_req req)
288	{	329	{
289	if (req->grp)
290	{
291	aio_req grp = req->grp;
292
293	/* unlink request */
294	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
295	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
296
297	if (grp->grp_first == req)
298	grp->grp_first = req->grp_next;
299
300	aio_grp_dec (grp);
301	}
302
303	if (req->self)	330	if (req->self)
304	{	331	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	332	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	333	SvREFCNT_dec (req->self);
307	}	334	}
308		335
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	336	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	337	SvREFCNT_dec (req->sv2);
312	SvREFCNT_dec (req->callback);	338	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317		339
318	Safefree (req);	340	Safefree (req);
319	}	341	}
320		342
321	static void req_cancel (aio_req req)	343	static void req_cancel_subs (aio_req grp)
322	{	344	{
323	req->cancelled = 1;	345	aio_req sub;
324		346
325	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)
326	{	378	{
327	aio_req sub;	379	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		380	croak ("unable to initialize result pipe(2)");
328		381
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	382	respipe_close (respipe [0]);
330	req_cancel (sub);	383	respipe [0] = old_readfd;
331	}	384	}
332	}
333		385
334	static int poll_cb ()	386	#ifdef _WIN32
335	{	387	int arg = 1;
336	dSP;	388	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
337	int count = 0;	389	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
338	int do_croak = 0;	390	#else
339	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)");
340		395
341	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 ())
342	{	405	{
343	pthread_mutex_lock (&reslock);	406	int size;
344	req = ress;
345		407
		408	X_LOCK (reslock);
		409	size = res_queue.size;
		410	X_UNLOCK (reslock);
		411
346	if (req)	412	if (size)
347	{
348	ress = req->next;
349
350	if (!ress)
351	{
352	/* read any signals sent by the worker threads */
353	char buf [32];
354	while (read (respipe [0], buf, 32) == 32)
355	;
356
357	rese = 0;
358	}
359	}
360
361	pthread_mutex_unlock (&reslock);
362
363	if (!req)
364	break;	413	return;
365		414
366	--nreqs;	415	maybe_start_thread ();
367		416
368	if (req->type == REQ_QUIT)	417	FD_ZERO (&rfd);
369	started--;	418	FD_SET (respipe [0], &rfd);
370	else if (req->type == REQ_GROUP && req->length)
371	{
372	req->fd = 1; /* mark request as delayed */
373	continue;
374	}
375	else
376	{
377	if (req->type == REQ_READ)
378	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
379		419
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	420	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
381	SvREADONLY_off (req->data);
382
383	if (req->statdata)
384	{
385	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
386	PL_laststatval = req->result;
387	PL_statcache = *(req->statdata);
388	}
389
390	req_invoke (req);
391
392	count++;
393	}
394
395	req_free (req);
396	}	421	}
397
398	return count;
399	}	422	}
400		423
401	static void *aio_proc(void *arg);	424	static int poll_cb (void)
402
403	static void start_thread (void)
404	{	425	{
405	sigset_t fullsigset, oldsigset;	426	int res;
406	pthread_t tid;
407	pthread_attr_t attr;
408		427
409	pthread_attr_init (&attr);	428	do
410	pthread_attr_setstacksize (&attr, STACKSIZE);
411	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
412
413	sigfillset (&fullsigset);
414	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
415
416	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
417	started++;
418
419	sigprocmask (SIG_SETMASK, &oldsigset, 0);
420	}
421
422	static void req_send (aio_req req)
423	{
424	while (started < wanted && nreqs >= started)
425	start_thread ();
426
427	++nreqs;
428
429	pthread_mutex_lock (&reqlock);
430
431	req->next = 0;
432
433	if (reqe)
434	{	429	{
435	reqe->next = req;	430	res = eio_poll ();
436	reqe = req;	431
		432	if (res > 0)
		433	croak (0);
437	}	434	}
438	else	435	while (max_outstanding && max_outstanding <= eio_nreqs ());
439	reqe = reqs = req;
440
441	pthread_cond_signal (&reqwait);
442	pthread_mutex_unlock (&reqlock);
443
444	if (nreqs > max_outstanding)
445	for (;;)
446	{
447	poll_cb ();
448
449	if (nreqs <= max_outstanding)
450	break;
451
452	poll_wait ();
453	}
454	}
455
456	static void end_thread (void)
457	{
458	aio_req req;
459	Newz (0, req, 1, aio_cb);
460	req->type = REQ_QUIT;
461
462	req_send (req);
463	}
464
465	static void min_parallel (int nthreads)
466	{
467	if (wanted < nthreads)
468	wanted = nthreads;
469	}
470
471	static void max_parallel (int nthreads)
472	{
473	int cur = started;
474
475	if (wanted > nthreads)
476	wanted = nthreads;
477
478	while (cur > wanted)
479	{
480	end_thread ();
481	cur--;
482	}
483
484	while (started > wanted)
485	{
486	poll_wait ();
487	poll_cb ();
488	}
489	}
490
491	static void create_pipe ()
492	{
493	if (pipe (respipe))
494	croak ("unable to initialize result pipe");
495
496	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
497	croak ("cannot set result pipe to nonblocking mode");
498
499	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
500	croak ("cannot set result pipe to nonblocking mode");
501	}
502
503	/*****************************************************************************/
504	/* work around various missing functions */
505
506	#if !HAVE_PREADWRITE
507	# define pread aio_pread
508	# define pwrite aio_pwrite
509
510	/*
511	* make our pread/pwrite safe against themselves, but not against
512	* normal read/write by using a mutex. slows down execution a lot,
513	* but that's your problem, not mine.
514	*/
515	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
516
517	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
518	{
519	ssize_t res;
520	off_t ooffset;
521
522	pthread_mutex_lock (&preadwritelock);
523	ooffset = lseek (fd, 0, SEEK_CUR);
524	lseek (fd, offset, SEEK_SET);
525	res = read (fd, buf, count);
526	lseek (fd, ooffset, SEEK_SET);
527	pthread_mutex_unlock (&preadwritelock);
528		436
529	return res;	437	return res;
530	}	438	}
531		439
532	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
533	{
534	ssize_t res;
535	off_t ooffset;
536
537	pthread_mutex_lock (&preadwritelock);
538	ooffset = lseek (fd, 0, SEEK_CUR);
539	lseek (fd, offset, SEEK_SET);
540	res = write (fd, buf, count);
541	lseek (fd, offset, SEEK_SET);
542	pthread_mutex_unlock (&preadwritelock);
543
544	return res;
545	}
546	#endif
547
548	#if !HAVE_FDATASYNC
549	# define fdatasync fsync
550	#endif
551
552	#if !HAVE_READAHEAD
553	# define readahead aio_readahead
554
555	static ssize_t readahead (int fd, off_t offset, size_t count)
556	{
557	char readahead_buf[4096];
558
559	while (count > 0)
560	{
561	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
562
563	pread (fd, readahead_buf, len, offset);
564	offset += len;
565	count -= len;
566	}
567
568	errno = 0;
569	}
570	#endif
571
572	#if !HAVE_READDIR_R
573	# define readdir_r aio_readdir_r
574
575	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
576
577	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
578	{
579	struct dirent *e;
580	int errorno;
581
582	pthread_mutex_lock (&readdirlock);
583
584	e = readdir (dirp);
585	errorno = errno;
586
587	if (e)
588	{
589	*res = ent;
590	strcpy (ent->d_name, e->d_name);
591	}
592	else
593	*res = 0;
594
595	pthread_mutex_unlock (&readdirlock);
596
597	errno = errorno;
598	return e ? 0 : -1;
599	}
600	#endif
601
602	/* sendfile always needs emulation */
603	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
604	{
605	ssize_t res;
606
607	if (!count)
608	return 0;
609
610	#if HAVE_SENDFILE
611	# if __linux
612	res = sendfile (ofd, ifd, &offset, count);
613
614	# elif __freebsd
615	/*
616	* Of course, the freebsd sendfile is a dire hack with no thoughts
617	* wasted on making it similar to other I/O functions.
618	*/
619	{
620	off_t sbytes;
621	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
622
623	if (res < 0 && sbytes)
624	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
625	res = sbytes;
626	}
627
628	# elif __hpux
629	res = sendfile (ofd, ifd, offset, count, 0, 0);
630
631	# elif __solaris
632	{
633	struct sendfilevec vec;
634	size_t sbytes;
635
636	vec.sfv_fd = ifd;
637	vec.sfv_flag = 0;
638	vec.sfv_off = offset;
639	vec.sfv_len = count;
640
641	res = sendfilev (ofd, &vec, 1, &sbytes);
642
643	if (res < 0 && sbytes)
644	res = sbytes;
645	}
646
647	# endif
648	#else
649	res = -1;
650	errno = ENOSYS;
651	#endif
652
653	if (res < 0
654	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
655	#if __solaris
656	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
657	#endif
658	)
659	)
660	{
661	/* emulate sendfile. this is a major pain in the ass */
662	char buf[4096];
663	res = 0;
664
665	while (count)
666	{
667	ssize_t cnt;
668
669	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
670
671	if (cnt <= 0)
672	{
673	if (cnt && !res) res = -1;
674	break;
675	}
676
677	cnt = write (ofd, buf, cnt);
678
679	if (cnt <= 0)
680	{
681	if (cnt && !res) res = -1;
682	break;
683	}
684
685	offset += cnt;
686	res += cnt;
687	count -= cnt;
688	}
689	}
690
691	return res;
692	}
693
694	/* read a full directory */
695	static int scandir_ (const char *path, void **namesp)
696	{
697	DIR *dirp = opendir (path);
698	union
699	{
700	struct dirent d;
701	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
702	} u;
703	struct dirent *entp;
704	char *name, *names;
705	int memlen = 4096;
706	int memofs = 0;
707	int res = 0;
708	int errorno;
709
710	if (!dirp)
711	return -1;
712
713	names = malloc (memlen);
714
715	for (;;)
716	{
717	errno = 0, readdir_r (dirp, &u.d, &entp);
718
719	if (!entp)
720	break;
721
722	name = entp->d_name;
723
724	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
725	{
726	int len = strlen (name) + 1;
727
728	res++;
729
730	while (memofs + len > memlen)
731	{
732	memlen *= 2;
733	names = realloc (names, memlen);
734	if (!names)
735	break;
736	}
737
738	memcpy (names + memofs, name, len);
739	memofs += len;
740	}
741	}
742
743	errorno = errno;
744	closedir (dirp);
745
746	if (errorno)
747	{
748	free (names);
749	errno = errorno;
750	res = -1;
751	}
752
753	*namesp = (void *)names;
754	return res;
755	}
756
757	/*****************************************************************************/
758
759	static void *aio_proc (void *thr_arg)
760	{
761	aio_req req;
762	int type;
763
764	do
765	{
766	pthread_mutex_lock (&reqlock);
767
768	for (;;)
769	{
770	req = reqs;
771
772	if (reqs)
773	{
774	reqs = reqs->next;
775	if (!reqs) reqe = 0;
776	}
777
778	if (req)
779	break;
780
781	pthread_cond_wait (&reqwait, &reqlock);
782	}
783
784	pthread_mutex_unlock (&reqlock);
785
786	errno = 0; /* strictly unnecessary */
787
788	if (!req->cancelled)
789	switch (type = req->type) /* remember type for QUIT check */
790	{
791	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
792	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
793
794	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
795	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
796
797	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
798	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
799	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
800
801	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
802	case REQ_CLOSE: req->result = close (req->fd); break;
803	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
804	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
805	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
806	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
807	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
808
809	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
810	case REQ_FSYNC: req->result = fsync (req->fd); break;
811	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
812
813	case REQ_SLEEP:
814	{
815	struct timeval tv;
816
817	tv.tv_sec = req->fd;
818	tv.tv_usec = req->fd2;
819
820	req->result = select (0, 0, 0, 0, &tv);
821	}
822
823	case REQ_QUIT:
824	break;
825
826	default:
827	req->result = ENOSYS;
828	break;
829	}
830
831	req->errorno = errno;
832
833	pthread_mutex_lock (&reslock);
834
835	req->next = 0;
836
837	if (rese)
838	{
839	rese->next = req;
840	rese = req;
841	}
842	else
843	{
844	rese = ress = req;
845
846	/* write a dummy byte to the pipe so fh becomes ready */
847	write (respipe [1], &respipe, 1);
848	}
849
850	pthread_mutex_unlock (&reslock);
851	}
852	while (type != REQ_QUIT);
853
854	return 0;
855	}
856
857	/*****************************************************************************/
858
859	static void atfork_prepare (void)
860	{
861	pthread_mutex_lock (&reqlock);
862	pthread_mutex_lock (&reslock);
863	#if !HAVE_PREADWRITE
864	pthread_mutex_lock (&preadwritelock);
865	#endif
866	#if !HAVE_READDIR_R
867	pthread_mutex_lock (&readdirlock);
868	#endif
869	}
870
871	static void atfork_parent (void)
872	{
873	#if !HAVE_READDIR_R
874	pthread_mutex_unlock (&readdirlock);
875	#endif
876	#if !HAVE_PREADWRITE
877	pthread_mutex_unlock (&preadwritelock);
878	#endif
879	pthread_mutex_unlock (&reslock);
880	pthread_mutex_unlock (&reqlock);
881	}
882
883	static void atfork_child (void)	440	static void atfork_child (void)
884	{	441	{
885	aio_req prv;
886
887	started = 0;
888
889	while (reqs)
890	{
891	prv = reqs;
892	reqs = prv->next;
893	req_free (prv);
894	}
895
896	reqs = reqe = 0;
897
898	while (ress)
899	{
900	prv = ress;
901	ress = prv->next;
902	req_free (prv);
903	}
904
905	ress = rese = 0;
906
907	close (respipe [0]);
908	close (respipe [1]);
909	create_pipe ();	442	create_respipe ();
910
911	atfork_parent ();
912	}	443	}
913		444
914	#define dREQ \	445	#define dREQ \
915	aio_req req; \	446	aio_req req; \
		447	int req_pri = next_pri; \
		448	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
916	\	449	\
917	if (SvOK (callback) && !SvROK (callback)) \	450	if (SvOK (callback) && !SvROK (callback)) \
918	croak ("callback must be undef or of reference type"); \	451	croak ("callback must be undef or of reference type"); \
919	\	452	\
920	Newz (0, req, 1, aio_cb); \	453	Newz (0, req, 1, eio_req); \
921	if (!req) \	454	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	455	croak ("out of memory during eio_req allocation"); \
923	\	456	\
924	req->callback = newSVsv (callback)	457	req->callback = newSVsv (callback); \
		458	req->pri = req_pri
925		459
926	#define REQ_SEND \	460	#define REQ_SEND \
927	req_send (req); \	461	req_submit (req); \
928	\	462	\
929	if (GIMME_V != G_VOID) \	463	if (GIMME_V != G_VOID) \
930	XPUSHs (req_sv (req, AIO_REQ_KLASS));	464	XPUSHs (req_sv (req, AIO_REQ_KLASS));
931		465
932	MODULE = IO::AIO PACKAGE = IO::AIO	466	MODULE = IO::AIO PACKAGE = IO::AIO
933		467
934	PROTOTYPES: ENABLE	468	PROTOTYPES: ENABLE
935		469
936	BOOT:	470	BOOT:
937	{	471	{
938	HV *stash = gv_stashpv ("IO::AIO", 1);	472	stash = gv_stashpv ("IO::AIO", 1);
		473
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
941	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);
942		486
943	create_pipe ();	487	X_COND_CHECK (reqwait);
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	488	#else
945	}	489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		490	#endif
946		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
947	void	501	void
948	min_parallel (nthreads)	502	max_poll_reqs (int nreqs)
949	int nthreads
950	PROTOTYPE: $	503	PROTOTYPE: $
		504	CODE:
		505	eio_set_max_poll_reqs (nreqs);
951		506
952	void	507	void
953	max_parallel (nthreads)	508	max_poll_time (double nseconds)
954	int nthreads
955	PROTOTYPE: $	509	PROTOTYPE: $
956
957	int
958	max_outstanding (nreqs)
959	int nreqs
960	PROTOTYPE: $
961	CODE:	510	CODE:
962	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:
963	max_outstanding = nreqs;	535	max_outstanding = maxreqs;
964		536
965	void	537	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	538	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
967	SV * pathname
968	int flags
969	int mode
970	SV * callback
971	PROTOTYPE: $$$;$	539	PROTOTYPE: $$$;$
972	PPCODE:	540	PPCODE:
973	{	541	{
974	dREQ;	542	dREQ;
975		543
976	req->type = REQ_OPEN;	544	req->type = EIO_OPEN;
977	req->data = newSVsv (pathname);	545	req->sv1 = newSVsv (pathname);
978	req->dataptr = SvPVbyte_nolen (req->data);	546	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	req->fd = flags;	547	req->int1 = flags;
980	req->mode = mode;	548	req->int2 = mode;
981		549
982	REQ_SEND;	550	REQ_SEND;
983	}	551	}
984		552
985	void	553	void
986	aio_close (fh,callback=&PL_sv_undef)	554	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
987	SV * fh
988	SV * callback
989	PROTOTYPE: $;$	555	PROTOTYPE: $;$
990	ALIAS:	556	ALIAS:
991	aio_close = REQ_CLOSE
992	aio_fsync = REQ_FSYNC	557	aio_fsync = EIO_FSYNC
993	aio_fdatasync = REQ_FDATASYNC	558	aio_fdatasync = EIO_FDATASYNC
994	PPCODE:	559	PPCODE:
995	{	560	{
996	dREQ;	561	dREQ;
997		562
998	req->type = ix;	563	req->type = ix;
999	req->fh = newSVsv (fh);	564	req->sv1 = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1001		566
1002	REQ_SEND (req);	567	REQ_SEND (req);
1003	}	568	}
1004		569
1005	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
1006	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)
1007	SV * fh
1008	UV offset
1009	UV length
1010	SV * data
1011	UV dataoffset
1012	SV * callback
1013	ALIAS:	600	ALIAS:
1014	aio_read = REQ_READ	601	aio_read = EIO_READ
1015	aio_write = REQ_WRITE	602	aio_write = EIO_WRITE
1016	PROTOTYPE: $$$$$;$	603	PROTOTYPE: $$$$$;$
1017	PPCODE:	604	PPCODE:
1018	{	605	{
1019	aio_req req;
1020	STRLEN svlen;	606	STRLEN svlen;
1021	char *svptr = SvPVbyte (data, svlen);	607	char *svptr = SvPVbyte (data, svlen);
		608	UV len = SvUV (length);
1022		609
1023	SvUPGRADE (data, SVt_PV);	610	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);	611	SvPOK_on (data);
1025		612
1026	if (dataoffset < 0)	613	if (dataoffset < 0)
1027	dataoffset += svlen;	614	dataoffset += svlen;
1028		615
1029	if (dataoffset < 0 || dataoffset > svlen)	616	if (dataoffset < 0 || dataoffset > svlen)
1030	croak ("data offset outside of string");	617	croak ("dataoffset outside of data scalar");
1031		618
1032	if (ix == REQ_WRITE)	619	if (ix == EIO_WRITE)
1033	{	620	{
1034	/* write: check length and adjust. */	621	/* write: check length and adjust. */
1035	if (length < 0 || length + dataoffset > svlen)	622	if (!SvOK (length) || len + dataoffset > svlen)
1036	length = svlen - dataoffset;	623	len = svlen - dataoffset;
1037	}	624	}
1038	else	625	else
1039	{	626	{
1040	/* read: grow scalar as necessary */	627	/* read: grow scalar as necessary */
1041	svptr = SvGROW (data, length + dataoffset);	628	svptr = SvGROW (data, len + dataoffset + 1);
1042	}	629	}
1043		630
1044	if (length < 0)	631	if (len < 0)
1045	croak ("length must not be negative");	632	croak ("length must not be negative");
1046		633
1047	{	634	{
1048	dREQ;	635	dREQ;
1049		636
1050	req->type = ix;	637	req->type = ix;
1051	req->fh = newSVsv (fh);	638	req->sv1 = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	639	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1053	: IoOFP (sv_2io (fh)));	640	: IoOFP (sv_2io (fh)));
		641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054	req->offset = offset;	642	req->size = len;
1055	req->length = length;
1056	req->data = SvREFCNT_inc (data);	643	req->sv2 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	644	req->ptr2 = (char *)svptr + dataoffset;
		645	req->stroffset = dataoffset;
1058		646
1059	if (!SvREADONLY (data))	647	if (!SvREADONLY (data))
1060	{	648	{
1061	SvREADONLY_on (data);	649	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	650	req->flags |= FLAG_SV2_RO_OFF;
1063	}	651	}
1064		652
1065	REQ_SEND;	653	REQ_SEND;
1066	}	654	}
1067	}	655	}
1068		656
1069	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
1070	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)
1071	SV * out_fh
1072	SV * in_fh
1073	UV in_offset
1074	UV length
1075	SV * callback
1076	PROTOTYPE: $$$$;$	674	PROTOTYPE: $$$$;$
1077	PPCODE:	675	PPCODE:
1078	{	676	{
1079	dREQ;	677	dREQ;
1080		678
1081	req->type = REQ_SENDFILE;	679	req->type = EIO_SENDFILE;
1082	req->fh = newSVsv (out_fh);	680	req->sv1 = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	681	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1084	req->fh2 = newSVsv (in_fh);	682	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	683	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1086	req->offset = in_offset;	684	req->offs = SvVAL64 (in_offset);
1087	req->length = length;	685	req->size = length;
1088		686
1089	REQ_SEND;	687	REQ_SEND;
1090	}	688	}
1091		689
1092	void	690	void
1093	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	691	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1094	SV * fh
1095	UV offset
1096	IV length
1097	SV * callback
1098	PROTOTYPE: $$$;$	692	PROTOTYPE: $$$;$
1099	PPCODE:	693	PPCODE:
1100	{	694	{
1101	dREQ;	695	dREQ;
1102		696
1103	req->type = REQ_READAHEAD;	697	req->type = EIO_READAHEAD;
1104	req->fh = newSVsv (fh);	698	req->sv1 = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	699	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1106	req->offset = offset;	700	req->offs = SvVAL64 (offset);
1107	req->length = length;	701	req->size = length;
1108		702
1109	REQ_SEND;	703	REQ_SEND;
1110	}	704	}
1111		705
1112	void	706	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	707	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1114	SV * fh_or_path
1115	SV * callback
1116	ALIAS:	708	ALIAS:
1117	aio_stat = REQ_STAT	709	aio_stat = EIO_STAT
1118	aio_lstat = REQ_LSTAT	710	aio_lstat = EIO_LSTAT
1119	PPCODE:	711	PPCODE:
1120	{	712	{
1121	dREQ;	713	dREQ;
1122		714
1123	New (0, req->statdata, 1, Stat_t);	715	req->sv1 = newSVsv (fh_or_path);
1124	if (!req->statdata)
1125	{
1126	req_free (req);
1127	croak ("out of memory during aio_req->statdata allocation");
1128	}
1129		716
1130	if (SvPOK (fh_or_path))	717	if (SvPOK (req->sv1))
1131	{	718	{
1132	req->type = ix;	719	req->type = ix;
1133	req->data = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);	720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1135	}	721	}
1136	else	722	else
1137	{	723	{
1138	req->type = REQ_FSTAT;	724	req->type = EIO_FSTAT;
1139	req->fh = newSVsv (fh_or_path);
1140	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}	726	}
1142		727
1143	REQ_SEND;	728	REQ_SEND;
1144	}	729	}
1145		730
1146	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
1147	aio_unlink (pathname,callback=&PL_sv_undef)	829	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1148	SV * pathname
1149	SV * callback
1150	ALIAS:	830	ALIAS:
1151	aio_unlink = REQ_UNLINK	831	aio_unlink = EIO_UNLINK
1152	aio_rmdir = REQ_RMDIR	832	aio_rmdir = EIO_RMDIR
1153	aio_readdir = REQ_READDIR	833	aio_readdir = EIO_READDIR
1154	PPCODE:	834	PPCODE:
1155	{	835	{
1156	dREQ;	836	dREQ;
1157		837
1158	req->type = ix;	838	req->type = ix;
1159	req->data = newSVsv (pathname);	839	req->sv1 = newSVsv (pathname);
1160	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);
1161		860
1162	REQ_SEND;	861	REQ_SEND;
1163	}	862	}
1164		863
1165	void	864	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	865	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1167	SV * oldpath
1168	SV * newpath
1169	SV * callback
1170	ALIAS:
1171	aio_link = REQ_LINK
1172	aio_symlink = REQ_SYMLINK
1173	aio_rename = REQ_RENAME
1174	PPCODE:	866	PPCODE:
1175	{	867	{
1176	dREQ;	868	dREQ;
1177		869
1178	req->type = ix;	870	req->type = EIO_MKNOD;
1179	req->fh = newSVsv (oldpath);	871	req->sv1 = newSVsv (pathname);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
1181	req->data = newSVsv (newpath);	873	req->int2 = (mode_t)mode;
1182	req->dataptr = SvPVbyte_nolen (req->data);	874	req->offs = dev;
1183		875
1184	REQ_SEND;	876	REQ_SEND;
1185	}	877	}
1186		878
1187	void	879	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	880	aio_busy (double delay, SV *callback=&PL_sv_undef)
1189	double delay
1190	SV * callback
1191	PPCODE:	881	PPCODE:
1192	{	882	{
1193	dREQ;	883	dREQ;
1194		884
1195	req->type = REQ_SLEEP;	885	req->type = EIO_BUSY;
1196	req->fd = delay < 0. ? 0 : delay;	886	req->nv1 = delay < 0. ? 0. : delay;
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1198		887
1199	REQ_SEND;	888	REQ_SEND;
1200	}	889	}
1201		890
1202	void	891	void
1203	aio_group (callback=&PL_sv_undef)	892	aio_group (SV *callback=&PL_sv_undef)
1204	SV * callback
1205	PROTOTYPE: ;$	893	PROTOTYPE: ;$
1206	PPCODE:	894	PPCODE:
1207	{	895	{
1208	dREQ;	896	dREQ;
		897
1209	req->type = REQ_GROUP;	898	req->type = EIO_GROUP;
		899
1210	req_send (req);	900	eio_submit (req);
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	901	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1212	}	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 - EIO_PRI_BIAS;
		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 + EIO_PRI_BIAS;
		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 + EIO_PRI_BIAS;
1213		939
1214	void	940	void
1215	flush ()	941	flush ()
1216	PROTOTYPE:	942	PROTOTYPE:
1217	CODE:	943	CODE:
1218	while (nreqs)	944	while (eio_nreqs ())
1219	{	945	{
1220	poll_wait ();	946	poll_wait ();
1221	poll_cb ();	947	poll_cb ();
1222	}	948	}
1223		949
1224	void	950	int
1225	poll()	951	poll()
1226	PROTOTYPE:	952	PROTOTYPE:
1227	CODE:	953	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();	954	poll_wait ();
1231	poll_cb ();	955	RETVAL = poll_cb ();
1232	}	956	OUTPUT:
		957	RETVAL
1233		958
1234	int	959	int
1235	poll_fileno()	960	poll_fileno()
1236	PROTOTYPE:	961	PROTOTYPE:
1237	CODE:	962	CODE:
…		…
1249		974
1250	void	975	void
1251	poll_wait()	976	poll_wait()
1252	PROTOTYPE:	977	PROTOTYPE:
1253	CODE:	978	CODE:
1254	if (nreqs)
1255	poll_wait ();	979	poll_wait ();
1256		980
1257	int	981	int
1258	nreqs()	982	nreqs()
1259	PROTOTYPE:	983	PROTOTYPE:
1260	CODE:	984	CODE:
1261	RETVAL = nreqs;	985	RETVAL = eio_nreqs ();
1262	OUTPUT:	986	OUTPUT:
1263	RETVAL	987	RETVAL
1264		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
1265	PROTOTYPES: DISABLE	1020	PROTOTYPES: DISABLE
1266		1021
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1022	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1023
1269	void	1024	void
1270	cancel (aio_req_ornot req)	1025	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1026	CODE:
1273	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);
1274		1034
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1035	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1036
1277	void	1037	void
1278	add (aio_req grp, ...)	1038	add (aio_req grp, ...)
1279	PPCODE:	1039	PPCODE:
1280	{	1040	{
1281	int i;	1041	int i;
1282		1042
1283	if (grp->fd == 2)	1043	if (grp->int1 == 2)
1284	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");
1285		1045
1286	for (i = 1; i < items; ++i )	1046	for (i = 1; i < items; ++i )
1287	{	1047	{
		1048	aio_req req;
		1049
1288	if (GIMME_V != G_VOID)	1050	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1051	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1052
1291	aio_req req = SvAIO_REQ (ST (i));	1053	req = SvAIO_REQ (ST (i));
1292		1054
1293	if (req)	1055	if (req)
1294	{	1056	eio_grp_add (grp, req);
1295	++grp->length;
1296	req->grp = grp;
1297
1298	req->grp_prev = 0;
1299	req->grp_next = grp->grp_first;
1300
1301	if (grp->grp_first)
1302	grp->grp_first->grp_prev = req;
1303
1304	grp->grp_first = req;
1305	}	1057	}
1306	}
1307	}	1058	}
1308		1059
1309	void	1060	void
1310	lock (aio_req grp)	1061	cancel_subs (aio_req_ornot req)
1311	CODE:	1062	CODE:
1312	++grp->length;	1063	req_cancel_subs (req);
1313		1064
1314	void	1065	void
1315	unlock (aio_req grp)	1066	result (aio_req grp, ...)
1316	CODE:	1067	CODE:
1317	aio_grp_dec (grp);	1068	{
		1069	int i;
		1070	AV *av;
1318		1071
		1072	grp->errorno = errno;
		1073
		1074	av = newAV ();
		1075
		1076	for (i = 1; i < items; ++i )
		1077	av_push (av, newSVsv (ST (i)));
		1078
		1079	SvREFCNT_dec (grp->sv1);
		1080	grp->sv1 = (SV *)av;
		1081	}
		1082
1319	void	1083	void
		1084	errno (aio_req grp, int errorno = errno)
		1085	CODE:
		1086	grp->errorno = errorno;
		1087
		1088	void
1320	feeder_limit (aio_req grp, int limit)	1089	limit (aio_req grp, int limit)
1321	CODE:	1090	CODE:
1322	grp->fd2 = limit;	1091	eio_grp_limit (grp, limit);
1323	aio_grp_feed (grp);
1324		1092
1325	void	1093	void
1326	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1094	feed (aio_req grp, SV *callback=&PL_sv_undef)
1327	CODE:	1095	CODE:
1328	{	1096	{
1329	SvREFCNT_dec (grp->fh2);	1097	SvREFCNT_dec (grp->sv2);
1330	grp->fh2 = newSVsv (callback);	1098	grp->sv2 = newSVsv (callback);
1331		1099
1332	if (grp->fd2 <= 0)	1100	if (grp->int2 <= 0)
1333	grp->fd2 = 2;	1101	grp->int2 = 2;
1334		1102
1335	aio_grp_feed (grp);	1103	eio_grp_limit (grp, grp->int2);
1336	}	1104	}
1337		1105

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