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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 1.123 by root, Sat May 17 12:17:25 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	#define EIO_NO_WRAPPERS 1
		92
		93	#include "libeio/eio.h"
		94
		95	static int req_invoke (eio_req *req);
		96	#define EIO_FINISH(req) req_invoke (req)
		97	static void aio_grp_feed (eio_req *grp);
		98	#define EIO_FEED(req) aio_grp_feed (req)
		99	static void req_destroy (eio_req *grp);
		100	#define EIO_DESTROY(req) req_destroy (req)
		101
		102	enum {
		103	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		104	};
		105
		106	#include "libeio/eio.c"
		107
91	typedef aio_cb *aio_req;	108	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	109	typedef eio_req *aio_req_ornot;
93		110
94	static int started, wanted;	111	static SV *on_next_submit;
95	static volatile int nreqs;	112	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	113	static int max_outstanding;
97	static int respipe [2];
98		114
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	115	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		116
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	117	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);	118	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	119
		120	static void want_poll (void)
		121	{
		122	/* write a dummy byte to the pipe so fh becomes ready */
		123	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		124	}
		125
		126	static void done_poll (void)
		127	{
		128	/* read any signals sent by the worker threads */
		129	char buf [4];
		130	while (respipe_read (respipe [0], buf, 4) == 4)
		131	;
		132	}
108		133
109	/* must be called at most once */	134	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	135	static SV *req_sv (aio_req req, const char *klass)
111	{	136	{
112	if (!req->self)	137	if (!req->self)
…		…
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	143	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
119	}	144	}
120		145
121	static aio_req SvAIO_REQ (SV *sv)	146	static aio_req SvAIO_REQ (SV *sv)
122	{	147	{
		148	MAGIC *mg;
		149
123	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	150	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
124	croak ("object of class " AIO_REQ_KLASS " expected");	151	croak ("object of class " AIO_REQ_KLASS " expected");
125		152
126	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	153	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
127		154
128	return mg ? (aio_req)mg->mg_ptr : 0;	155	return mg ? (aio_req)mg->mg_ptr : 0;
129	}	156	}
130		157
131	static void aio_grp_feed (aio_req grp)	158	static void aio_grp_feed (aio_req grp)
132	{	159	{
133	while (grp->length < grp->fd2)	160	if (grp->sv2 && SvOK (grp->sv2))
134	{	161	{
135	int old_len = grp->length;	162	dSP;
136		163
137	if (grp->fh2 && SvOK (grp->fh2))	164	ENTER;
		165	SAVETMPS;
		166	PUSHMARK (SP);
		167	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		168	PUTBACK;
		169	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		170	SPAGAIN;
		171	FREETMPS;
		172	LEAVE;
		173	}
		174	}
		175
		176	static void req_submit (eio_req *req)
		177	{
		178	eio_submit (req);
		179
		180	if (on_next_submit)
		181	{
		182	dSP;
		183	SV *cb = sv_2mortal (on_next_submit);
		184
		185	on_next_submit = 0;
		186
		187	PUSHMARK (SP);
		188	PUTBACK;
		189	call_sv (cb, G_DISCARD | G_EVAL);
		190	}
		191	}
		192
		193	static int req_invoke (eio_req *req)
		194	{
		195	dSP;
		196
		197	if (req->flags & FLAG_SV2_RO_OFF)
		198	SvREADONLY_off (req->sv2);
		199
		200	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		201	{
		202	ENTER;
		203	SAVETMPS;
		204	PUSHMARK (SP);
		205	EXTEND (SP, 1);
		206
		207	switch (req->type)
138	{	208	{
139	dSP;	209	case EIO_READDIR:
		210	{
		211	SV *rv = &PL_sv_undef;
140		212
141	ENTER;	213	if (req->result >= 0)
142	SAVETMPS;	214	{
143	PUSHMARK (SP);	215	int i;
144	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	char *buf = req->ptr2;
145	PUTBACK;	217	AV *av = newAV ();
146	call_sv (grp->fh2, G_VOID | G_EVAL);	218
147	SPAGAIN;	219	av_extend (av, req->result - 1);
148	FREETMPS;	220
149	LEAVE;	221	for (i = 0; i < req->result; ++i)
		222	{
		223	SV *sv = newSVpv (buf, 0);
		224
		225	av_store (av, i, sv);
		226	buf += SvCUR (sv) + 1;
		227	}
		228
		229	rv = sv_2mortal (newRV_noinc ((SV *)av));
		230	}
		231
		232	PUSHs (rv);
		233	}
		234	break;
		235
		236	case EIO_OPEN:
		237	{
		238	/* convert fd to fh */
		239	SV *fh = &PL_sv_undef;
		240
		241	if (req->result >= 0)
		242	{
		243	GV *gv = (GV *)sv_newmortal ();
		244	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		245	char sym [64];
		246	int symlen;
		247
		248	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		249	gv_init (gv, stash, sym, symlen, 0);
		250
		251	symlen = snprintf (
		252	sym,
		253	sizeof (sym),
		254	"%s&=%d",
		255	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		256	req->result
		257	);
		258
		259	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		260	fh = (SV *)gv;
		261	}
		262
		263	PUSHs (fh);
		264	}
		265	break;
		266
		267	case EIO_GROUP:
		268	req->int1 = 2; /* mark group as finished */
		269
		270	if (req->sv1)
		271	{
		272	int i;
		273	AV *av = (AV *)req->sv1;
		274
		275	EXTEND (SP, AvFILL (av) + 1);
		276	for (i = 0; i <= AvFILL (av); ++i)
		277	PUSHs (*av_fetch (av, i, 0));
		278	}
		279	break;
		280
		281	case EIO_NOP:
		282	case EIO_BUSY:
		283	break;
		284
		285	case EIO_READLINK:
		286	if (req->result > 0)
		287	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		288	break;
		289
		290	case EIO_STAT:
		291	case EIO_LSTAT:
		292	case EIO_FSTAT:
		293	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		294	PL_laststatval = req->result;
		295	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		296	PUSHs (sv_2mortal (newSViv (req->result)));
		297	break;
		298
		299	case EIO_READ:
		300	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		301	*SvEND (req->sv2) = 0;
		302	PUSHs (sv_2mortal (newSViv (req->result)));
		303	break;
		304
		305	case EIO_DUP2:
		306	if (req->result > 0)
		307	req->result = 0;
		308	/* FALLTHROUGH */
		309
		310	default:
		311	PUSHs (sv_2mortal (newSViv (req->result)));
		312	break;
150	}	313	}
151		314
152	/* stop if no progress has been made */	315	errno = req->errorno;
153	if (old_len == grp->length)	316
154	{	317	PUTBACK;
155	SvREFCNT_dec (grp->fh2);	318	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
156	grp->fh2 = 0;	319	SPAGAIN;
157	break;	320
158	}	321	FREETMPS;
		322	LEAVE;
		323
		324	PUTBACK;
159	}	325	}
160	}
161		326
162	static void aio_grp_dec (aio_req grp)	327	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	}	328	}
176		329
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)	330	static void req_destroy (aio_req req)
288	{	331	{
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)	332	if (req->self)
304	{	333	{
305	sv_unmagic (req->self, PERL_MAGIC_ext);	334	sv_unmagic (req->self, PERL_MAGIC_ext);
306	SvREFCNT_dec (req->self);	335	SvREFCNT_dec (req->self);
307	}	336	}
308		337
309	SvREFCNT_dec (req->data);
310	SvREFCNT_dec (req->fh);	338	SvREFCNT_dec (req->sv1);
311	SvREFCNT_dec (req->fh2);	339	SvREFCNT_dec (req->sv2);
312	SvREFCNT_dec (req->callback);	340	SvREFCNT_dec (req->callback);
313	Safefree (req->statdata);
314
315	if (req->type == REQ_READDIR && req->result >= 0)
316	free (req->data2ptr);
317		341
318	Safefree (req);	342	Safefree (req);
319	}	343	}
320		344
321	static void req_cancel (aio_req req)	345	static void req_cancel_subs (aio_req grp)
322	{	346	{
323	req->cancelled = 1;	347	aio_req sub;
324		348
325	if (req->type == REQ_GROUP)	349	if (grp->type != EIO_GROUP)
		350	return;
		351
		352	SvREFCNT_dec (grp->sv2);
		353	grp->sv2 = 0;
		354
		355	eio_grp_cancel (grp);
		356	}
		357
		358	#ifdef USE_SOCKETS_AS_HANDLES
		359	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		360	#else
		361	# define TO_SOCKET(x) (x)
		362	#endif
		363
		364	static void
		365	create_respipe (void)
		366	{
		367	int old_readfd = respipe [0];
		368
		369	if (respipe [1] >= 0)
		370	respipe_close (TO_SOCKET (respipe [1]));
		371
		372	#ifdef _WIN32
		373	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		374	#else
		375	if (pipe (respipe))
		376	#endif
		377	croak ("unable to initialize result pipe");
		378
		379	if (old_readfd >= 0)
326	{	380	{
327	aio_req sub;	381	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		382	croak ("unable to initialize result pipe(2)");
328		383
329	for (sub = req->grp_first; sub; sub = sub->grp_next)	384	respipe_close (respipe [0]);
330	req_cancel (sub);	385	respipe [0] = old_readfd;
331	}	386	}
332	}
333		387
334	static int poll_cb ()	388	#ifdef _WIN32
335	{	389	int arg = 1;
336	dSP;	390	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
337	int count = 0;	391	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
338	int do_croak = 0;	392	#else
339	aio_req req;	393	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		394	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		395	#endif
		396	croak ("unable to initialize result pipe(3)");
340		397
341	for (;;)	398	respipe_osf [0] = TO_SOCKET (respipe [0]);
		399	respipe_osf [1] = TO_SOCKET (respipe [1]);
		400	}
		401
		402	static void poll_wait (void)
		403	{
		404	fd_set rfd;
		405
		406	while (eio_nreqs ())
342	{	407	{
343	pthread_mutex_lock (&reslock);	408	int size;
344	req = ress;
345		409
		410	X_LOCK (reslock);
		411	size = res_queue.size;
		412	X_UNLOCK (reslock);
		413
346	if (req)	414	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;	415	return;
365		416
366	--nreqs;	417	etp_maybe_start_thread ();
367		418
368	if (req->type == REQ_QUIT)	419	FD_ZERO (&rfd);
369	started--;	420	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		421
380	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	422	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	}	423	}
397
398	return count;
399	}	424	}
400		425
401	static void *aio_proc(void *arg);	426	static int poll_cb (void)
402
403	static void start_thread (void)
404	{	427	{
405	sigset_t fullsigset, oldsigset;	428	int res;
406	pthread_t tid;
407	pthread_attr_t attr;
408		429
409	pthread_attr_init (&attr);	430	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	{	431	{
435	reqe->next = req;	432	res = eio_poll ();
436	reqe = req;	433
		434	if (res > 0)
		435	croak (0);
437	}	436	}
438	else	437	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		438
529	return res;	439	return res;
530	}	440	}
531		441
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)	442	static void atfork_child (void)
884	{	443	{
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 ();	444	create_respipe ();
910
911	atfork_parent ();
912	}	445	}
913		446
914	#define dREQ \	447	#define dREQ \
915	aio_req req; \	448	aio_req req; \
		449	int req_pri = next_pri; \
		450	next_pri = EIO_PRI_DEFAULT; \
916	\	451	\
917	if (SvOK (callback) && !SvROK (callback)) \	452	if (SvOK (callback) && !SvROK (callback)) \
918	croak ("callback must be undef or of reference type"); \	453	croak ("callback must be undef or of reference type"); \
919	\	454	\
920	Newz (0, req, 1, aio_cb); \	455	Newz (0, req, 1, eio_req); \
921	if (!req) \	456	if (!req) \
922	croak ("out of memory during aio_req allocation"); \	457	croak ("out of memory during eio_req allocation"); \
923	\	458	\
924	req->callback = newSVsv (callback)	459	req->callback = newSVsv (callback); \
		460	req->pri = req_pri
925		461
926	#define REQ_SEND \	462	#define REQ_SEND \
927	req_send (req); \	463	req_submit (req); \
928	\	464	\
929	if (GIMME_V != G_VOID) \	465	if (GIMME_V != G_VOID) \
930	XPUSHs (req_sv (req, AIO_REQ_KLASS));	466	XPUSHs (req_sv (req, AIO_REQ_KLASS));
931		467
932	MODULE = IO::AIO PACKAGE = IO::AIO	468	MODULE = IO::AIO PACKAGE = IO::AIO
933		469
934	PROTOTYPES: ENABLE	470	PROTOTYPES: ENABLE
935		471
936	BOOT:	472	BOOT:
937	{	473	{
938	HV *stash = gv_stashpv ("IO::AIO", 1);	474	stash = gv_stashpv ("IO::AIO", 1);
		475
939	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	476	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
940	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	477	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
941	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	478	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		479	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		480	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		481	#ifndef _WIN32
		482	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		483	#endif
942		484
943	create_pipe ();	485	create_respipe ();
944	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
945	}
946		486
		487	if (eio_init (want_poll, done_poll) < 0)
		488	croak ("IO::AIO: unable to initialise eio library");
		489
		490	/* atfork child called in fifo order, so before eio's handler */
		491	X_THREAD_ATFORK (0, 0, atfork_child);
		492	}
		493
947	void	494	void
948	min_parallel (nthreads)	495	max_poll_reqs (int nreqs)
949	int nthreads
950	PROTOTYPE: $	496	PROTOTYPE: $
		497	CODE:
		498	eio_set_max_poll_reqs (nreqs);
951		499
952	void	500	void
953	max_parallel (nthreads)	501	max_poll_time (double nseconds)
954	int nthreads
955	PROTOTYPE: $	502	PROTOTYPE: $
956
957	int
958	max_outstanding (nreqs)
959	int nreqs
960	PROTOTYPE: $
961	CODE:	503	CODE:
962	RETVAL = max_outstanding;	504	eio_set_max_poll_time (nseconds);
		505
		506	void
		507	min_parallel (int nthreads)
		508	PROTOTYPE: $
		509	CODE:
		510	eio_set_min_parallel (nthreads);
		511
		512	void
		513	max_parallel (int nthreads)
		514	PROTOTYPE: $
		515	CODE:
		516	eio_set_max_parallel (nthreads);
		517
		518	void
		519	max_idle (int nthreads)
		520	PROTOTYPE: $
		521	CODE:
		522	eio_set_max_idle (nthreads);
		523
		524	void
		525	max_outstanding (int maxreqs)
		526	PROTOTYPE: $
		527	CODE:
963	max_outstanding = nreqs;	528	max_outstanding = maxreqs;
964		529
965	void	530	void
966	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	531	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: $$$;$	532	PROTOTYPE: $$$;$
972	PPCODE:	533	PPCODE:
973	{	534	{
974	dREQ;	535	dREQ;
975		536
976	req->type = REQ_OPEN;	537	req->type = EIO_OPEN;
977	req->data = newSVsv (pathname);	538	req->sv1 = newSVsv (pathname);
978	req->dataptr = SvPVbyte_nolen (req->data);	539	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	req->fd = flags;	540	req->int1 = flags;
980	req->mode = mode;	541	req->int2 = mode;
981		542
982	REQ_SEND;	543	REQ_SEND;
983	}	544	}
984		545
985	void	546	void
986	aio_close (fh,callback=&PL_sv_undef)	547	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
987	SV * fh
988	SV * callback
989	PROTOTYPE: $;$	548	PROTOTYPE: $;$
990	ALIAS:	549	ALIAS:
991	aio_close = REQ_CLOSE
992	aio_fsync = REQ_FSYNC	550	aio_fsync = EIO_FSYNC
993	aio_fdatasync = REQ_FDATASYNC	551	aio_fdatasync = EIO_FDATASYNC
994	PPCODE:	552	PPCODE:
995	{	553	{
996	dREQ;	554	dREQ;
997		555
998	req->type = ix;	556	req->type = ix;
999	req->fh = newSVsv (fh);	557	req->sv1 = newSVsv (fh);
1000	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	558	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1001		559
1002	REQ_SEND (req);	560	REQ_SEND (req);
1003	}	561	}
1004		562
1005	void	563	void
		564	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		565	PROTOTYPE: $;$
		566	PPCODE:
		567	{
		568	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		569	dREQ;
		570
		571	if (close_pipe < 0)
		572	{
		573	int pipefd [2];
		574
		575	if (pipe (pipefd) < 0
		576	|| close (pipefd [1]) < 0
		577	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		578	abort (); /*D*/
		579
		580	close_pipe = pipefd [0];
		581	}
		582
		583	req->type = EIO_DUP2;
		584	req->int1 = close_pipe;
		585	req->sv2 = newSVsv (fh);
		586	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		587
		588	REQ_SEND (req);
		589	}
		590
		591	void
1006	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	592	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:	593	ALIAS:
1014	aio_read = REQ_READ	594	aio_read = EIO_READ
1015	aio_write = REQ_WRITE	595	aio_write = EIO_WRITE
1016	PROTOTYPE: $$$$$;$	596	PROTOTYPE: $$$$$;$
1017	PPCODE:	597	PPCODE:
1018	{	598	{
1019	aio_req req;
1020	STRLEN svlen;	599	STRLEN svlen;
1021	char *svptr = SvPVbyte (data, svlen);	600	char *svptr = SvPVbyte (data, svlen);
		601	UV len = SvUV (length);
1022		602
1023	SvUPGRADE (data, SVt_PV);	603	SvUPGRADE (data, SVt_PV);
1024	SvPOK_on (data);	604	SvPOK_on (data);
1025		605
1026	if (dataoffset < 0)	606	if (dataoffset < 0)
1027	dataoffset += svlen;	607	dataoffset += svlen;
1028		608
1029	if (dataoffset < 0 || dataoffset > svlen)	609	if (dataoffset < 0 || dataoffset > svlen)
1030	croak ("data offset outside of string");	610	croak ("dataoffset outside of data scalar");
1031		611
1032	if (ix == REQ_WRITE)	612	if (ix == EIO_WRITE)
1033	{	613	{
1034	/* write: check length and adjust. */	614	/* write: check length and adjust. */
1035	if (length < 0 || length + dataoffset > svlen)	615	if (!SvOK (length) || len + dataoffset > svlen)
1036	length = svlen - dataoffset;	616	len = svlen - dataoffset;
1037	}	617	}
1038	else	618	else
1039	{	619	{
1040	/* read: grow scalar as necessary */	620	/* read: grow scalar as necessary */
1041	svptr = SvGROW (data, length + dataoffset);	621	svptr = SvGROW (data, len + dataoffset + 1);
1042	}	622	}
1043		623
1044	if (length < 0)	624	if (len < 0)
1045	croak ("length must not be negative");	625	croak ("length must not be negative");
1046		626
1047	{	627	{
1048	dREQ;	628	dREQ;
1049		629
1050	req->type = ix;	630	req->type = ix;
1051	req->fh = newSVsv (fh);	631	req->sv1 = newSVsv (fh);
1052	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	632	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1053	: IoOFP (sv_2io (fh)));	633	: IoOFP (sv_2io (fh)));
		634	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1054	req->offset = offset;	635	req->size = len;
1055	req->length = length;
1056	req->data = SvREFCNT_inc (data);	636	req->sv2 = SvREFCNT_inc (data);
1057	req->dataptr = (char *)svptr + dataoffset;	637	req->ptr2 = (char *)svptr + dataoffset;
		638	req->stroffset = dataoffset;
1058		639
1059	if (!SvREADONLY (data))	640	if (!SvREADONLY (data))
1060	{	641	{
1061	SvREADONLY_on (data);	642	SvREADONLY_on (data);
1062	req->data2ptr = (void *)data;	643	req->flags |= FLAG_SV2_RO_OFF;
1063	}	644	}
1064		645
1065	REQ_SEND;	646	REQ_SEND;
1066	}	647	}
1067	}	648	}
1068		649
1069	void	650	void
		651	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		652	PROTOTYPE: $$;$
		653	PPCODE:
		654	{
		655	SV *data;
		656	dREQ;
		657
		658	req->type = EIO_READLINK;
		659	req->sv1 = newSVsv (path);
		660	req->ptr1 = SvPVbyte_nolen (req->sv1);
		661
		662	REQ_SEND;
		663	}
		664
		665	void
1070	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	666	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: $$$$;$	667	PROTOTYPE: $$$$;$
1077	PPCODE:	668	PPCODE:
1078	{	669	{
1079	dREQ;	670	dREQ;
1080		671
1081	req->type = REQ_SENDFILE;	672	req->type = EIO_SENDFILE;
1082	req->fh = newSVsv (out_fh);	673	req->sv1 = newSVsv (out_fh);
1083	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1084	req->fh2 = newSVsv (in_fh);	675	req->sv2 = newSVsv (in_fh);
1085	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	676	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1086	req->offset = in_offset;	677	req->offs = SvVAL64 (in_offset);
1087	req->length = length;	678	req->size = length;
1088		679
1089	REQ_SEND;	680	REQ_SEND;
1090	}	681	}
1091		682
1092	void	683	void
1093	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	684	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1094	SV * fh
1095	UV offset
1096	IV length
1097	SV * callback
1098	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1099	PPCODE:	686	PPCODE:
1100	{	687	{
1101	dREQ;	688	dREQ;
1102		689
1103	req->type = REQ_READAHEAD;	690	req->type = EIO_READAHEAD;
1104	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1105	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1106	req->offset = offset;	693	req->offs = SvVAL64 (offset);
1107	req->length = length;	694	req->size = length;
1108		695
1109	REQ_SEND;	696	REQ_SEND;
1110	}	697	}
1111		698
1112	void	699	void
1113	aio_stat (fh_or_path,callback=&PL_sv_undef)	700	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1114	SV * fh_or_path
1115	SV * callback
1116	ALIAS:	701	ALIAS:
1117	aio_stat = REQ_STAT	702	aio_stat = EIO_STAT
1118	aio_lstat = REQ_LSTAT	703	aio_lstat = EIO_LSTAT
1119	PPCODE:	704	PPCODE:
1120	{	705	{
1121	dREQ;	706	dREQ;
1122		707
1123	New (0, req->statdata, 1, Stat_t);	708	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		709
1130	if (SvPOK (fh_or_path))	710	if (SvPOK (req->sv1))
1131	{	711	{
1132	req->type = ix;	712	req->type = ix;
1133	req->data = newSVsv (fh_or_path);
1134	req->dataptr = SvPVbyte_nolen (req->data);	713	req->ptr1 = SvPVbyte_nolen (req->sv1);
1135	}	714	}
1136	else	715	else
1137	{	716	{
1138	req->type = REQ_FSTAT;	717	req->type = EIO_FSTAT;
1139	req->fh = newSVsv (fh_or_path);
1140	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	718	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1141	}	719	}
1142		720
1143	REQ_SEND;	721	REQ_SEND;
1144	}	722	}
1145		723
1146	void	724	void
		725	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		726	PPCODE:
		727	{
		728	dREQ;
		729
		730	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		731	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		732	req->sv1 = newSVsv (fh_or_path);
		733
		734	if (SvPOK (req->sv1))
		735	{
		736	req->type = EIO_UTIME;
		737	req->ptr1 = SvPVbyte_nolen (req->sv1);
		738	}
		739	else
		740	{
		741	req->type = EIO_FUTIME;
		742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		743	}
		744
		745	REQ_SEND;
		746	}
		747
		748	void
		749	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->sv1 = newSVsv (fh_or_path);
		755	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		756
		757	if (SvPOK (req->sv1))
		758	{
		759	req->type = EIO_TRUNCATE;
		760	req->ptr1 = SvPVbyte_nolen (req->sv1);
		761	}
		762	else
		763	{
		764	req->type = EIO_FTRUNCATE;
		765	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		766	}
		767
		768	REQ_SEND;
		769	}
		770
		771	void
		772	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		773	ALIAS:
		774	aio_chmod = EIO_CHMOD
		775	aio_mkdir = EIO_MKDIR
		776	PPCODE:
		777	{
		778	dREQ;
		779
		780	req->int2 = mode;
		781	req->sv1 = newSVsv (fh_or_path);
		782
		783	if (SvPOK (req->sv1))
		784	{
		785	req->type = ix;
		786	req->ptr1 = SvPVbyte_nolen (req->sv1);
		787	}
		788	else
		789	{
		790	req->type = EIO_FCHMOD;
		791	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		792	}
		793
		794	REQ_SEND;
		795	}
		796
		797	void
		798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		799	PPCODE:
		800	{
		801	dREQ;
		802
		803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		805	req->sv1 = newSVsv (fh_or_path);
		806
		807	if (SvPOK (req->sv1))
		808	{
		809	req->type = EIO_CHOWN;
		810	req->ptr1 = SvPVbyte_nolen (req->sv1);
		811	}
		812	else
		813	{
		814	req->type = EIO_FCHOWN;
		815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		816	}
		817
		818	REQ_SEND;
		819	}
		820
		821	void
1147	aio_unlink (pathname,callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1148	SV * pathname
1149	SV * callback
1150	ALIAS:	823	ALIAS:
1151	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1152	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1153	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1154	PPCODE:	827	PPCODE:
1155	{	828	{
1156	dREQ;	829	dREQ;
1157		830
1158	req->type = ix;	831	req->type = ix;
1159	req->data = newSVsv (pathname);	832	req->sv1 = newSVsv (pathname);
1160	req->dataptr = SvPVbyte_nolen (req->data);	833	req->ptr1 = SvPVbyte_nolen (req->sv1);
		834
		835	REQ_SEND;
		836	}
		837
		838	void
		839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		840	ALIAS:
		841	aio_link = EIO_LINK
		842	aio_symlink = EIO_SYMLINK
		843	aio_rename = EIO_RENAME
		844	PPCODE:
		845	{
		846	dREQ;
		847
		848	req->type = ix;
		849	req->sv1 = newSVsv (oldpath);
		850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
1161		853
1162	REQ_SEND;	854	REQ_SEND;
1163	}	855	}
1164		856
1165	void	857	void
1166	aio_link (oldpath,newpath,callback=&PL_sv_undef)	858	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:	859	PPCODE:
1175	{	860	{
1176	dREQ;	861	dREQ;
1177		862
1178	req->type = ix;	863	req->type = EIO_MKNOD;
1179	req->fh = newSVsv (oldpath);	864	req->sv1 = newSVsv (pathname);
1180	req->data2ptr = SvPVbyte_nolen (req->fh);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1181	req->data = newSVsv (newpath);	866	req->int2 = (mode_t)mode;
1182	req->dataptr = SvPVbyte_nolen (req->data);	867	req->offs = dev;
1183		868
1184	REQ_SEND;	869	REQ_SEND;
1185	}	870	}
1186		871
1187	void	872	void
1188	aio_sleep (delay,callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1189	double delay
1190	SV * callback
1191	PPCODE:	874	PPCODE:
1192	{	875	{
1193	dREQ;	876	dREQ;
1194		877
1195	req->type = REQ_SLEEP;	878	req->type = EIO_BUSY;
1196	req->fd = delay < 0. ? 0 : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1197	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1198		880
1199	REQ_SEND;	881	REQ_SEND;
1200	}	882	}
1201		883
1202	void	884	void
1203	aio_group (callback=&PL_sv_undef)	885	aio_group (SV *callback=&PL_sv_undef)
1204	SV * callback
1205	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1206	PPCODE:	887	PPCODE:
1207	{	888	{
1208	dREQ;	889	dREQ;
		890
1209	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
		892
1210	req_send (req);	893	eio_submit (req);
1211	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1212	}	895	}
		896
		897	void
		898	aio_nop (SV *callback=&PL_sv_undef)
		899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
		902	PPCODE:
		903	{
		904	dREQ;
		905
		906	req->type = ix;
		907
		908	REQ_SEND;
		909	}
		910
		911	int
		912	aioreq_pri (int pri = 0)
		913	PROTOTYPE: ;$
		914	CODE:
		915	RETVAL = next_pri;
		916	if (items > 0)
		917	{
		918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		920	next_pri = pri;
		921	}
		922	OUTPUT:
		923	RETVAL
		924
		925	void
		926	aioreq_nice (int nice = 0)
		927	CODE:
		928	nice = next_pri - nice;
		929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		931	next_pri = nice;
1213		932
1214	void	933	void
1215	flush ()	934	flush ()
1216	PROTOTYPE:	935	PROTOTYPE:
1217	CODE:	936	CODE:
1218	while (nreqs)	937	while (eio_nreqs ())
1219	{	938	{
1220	poll_wait ();	939	poll_wait ();
1221	poll_cb ();	940	poll_cb ();
1222	}	941	}
1223		942
1224	void	943	int
1225	poll()	944	poll()
1226	PROTOTYPE:	945	PROTOTYPE:
1227	CODE:	946	CODE:
1228	if (nreqs)
1229	{
1230	poll_wait ();	947	poll_wait ();
1231	poll_cb ();	948	RETVAL = poll_cb ();
1232	}	949	OUTPUT:
		950	RETVAL
1233		951
1234	int	952	int
1235	poll_fileno()	953	poll_fileno()
1236	PROTOTYPE:	954	PROTOTYPE:
1237	CODE:	955	CODE:
…		…
1249		967
1250	void	968	void
1251	poll_wait()	969	poll_wait()
1252	PROTOTYPE:	970	PROTOTYPE:
1253	CODE:	971	CODE:
1254	if (nreqs)
1255	poll_wait ();	972	poll_wait ();
1256		973
1257	int	974	int
1258	nreqs()	975	nreqs()
1259	PROTOTYPE:	976	PROTOTYPE:
1260	CODE:	977	CODE:
1261	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1262	OUTPUT:	979	OUTPUT:
1263	RETVAL	980	RETVAL
1264		981
		982	int
		983	nready()
		984	PROTOTYPE:
		985	CODE:
		986	RETVAL = eio_nready ();
		987	OUTPUT:
		988	RETVAL
		989
		990	int
		991	npending()
		992	PROTOTYPE:
		993	CODE:
		994	RETVAL = eio_npending ();
		995	OUTPUT:
		996	RETVAL
		997
		998	int
		999	nthreads()
		1000	PROTOTYPE:
		1001	CODE:
		1002	RETVAL = eio_nthreads ();
		1003	OUTPUT:
		1004	RETVAL
		1005
		1006	void _on_next_submit (SV *cb)
		1007	CODE:
		1008	SvREFCNT_dec (on_next_submit);
		1009	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1010
1265	PROTOTYPES: DISABLE	1011	PROTOTYPES: DISABLE
1266		1012
1267	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1013	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1268		1014
1269	void	1015	void
1270	cancel (aio_req_ornot req)	1016	cancel (aio_req_ornot req)
1271	PROTOTYPE:
1272	CODE:	1017	CODE:
1273	req_cancel (req);	1018	eio_cancel (req);
		1019
		1020	void
		1021	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1022	CODE:
		1023	SvREFCNT_dec (req->callback);
		1024	req->callback = newSVsv (callback);
1274		1025
1275	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1026	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1276		1027
1277	void	1028	void
1278	add (aio_req grp, ...)	1029	add (aio_req grp, ...)
1279	PPCODE:	1030	PPCODE:
1280	{	1031	{
1281	int i;	1032	int i;
1282		1033
1283	if (grp->fd == 2)	1034	if (grp->int1 == 2)
1284	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1035	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1285		1036
1286	for (i = 1; i < items; ++i )	1037	for (i = 1; i < items; ++i )
1287	{	1038	{
		1039	aio_req req;
		1040
1288	if (GIMME_V != G_VOID)	1041	if (GIMME_V != G_VOID)
1289	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1042	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1290		1043
1291	aio_req req = SvAIO_REQ (ST (i));	1044	req = SvAIO_REQ (ST (i));
1292		1045
1293	if (req)	1046	if (req)
1294	{	1047	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	}	1048	}
1306	}
1307	}	1049	}
1308		1050
1309	void	1051	void
1310	lock (aio_req grp)	1052	cancel_subs (aio_req_ornot req)
1311	CODE:	1053	CODE:
1312	++grp->length;	1054	req_cancel_subs (req);
1313		1055
1314	void	1056	void
1315	unlock (aio_req grp)	1057	result (aio_req grp, ...)
1316	CODE:	1058	CODE:
1317	aio_grp_dec (grp);	1059	{
		1060	int i;
		1061	AV *av;
1318		1062
		1063	grp->errorno = errno;
		1064
		1065	av = newAV ();
		1066
		1067	for (i = 1; i < items; ++i )
		1068	av_push (av, newSVsv (ST (i)));
		1069
		1070	SvREFCNT_dec (grp->sv1);
		1071	grp->sv1 = (SV *)av;
		1072	}
		1073
1319	void	1074	void
		1075	errno (aio_req grp, int errorno = errno)
		1076	CODE:
		1077	grp->errorno = errorno;
		1078
		1079	void
1320	feeder_limit (aio_req grp, int limit)	1080	limit (aio_req grp, int limit)
1321	CODE:	1081	CODE:
1322	grp->fd2 = limit;	1082	eio_grp_limit (grp, limit);
1323	aio_grp_feed (grp);
1324		1083
1325	void	1084	void
1326	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1085	feed (aio_req grp, SV *callback=&PL_sv_undef)
1327	CODE:	1086	CODE:
1328	{	1087	{
1329	SvREFCNT_dec (grp->fh2);	1088	SvREFCNT_dec (grp->sv2);
1330	grp->fh2 = newSVsv (callback);	1089	grp->sv2 = newSVsv (callback);
1331		1090
1332	if (grp->fd2 <= 0)	1091	if (grp->int2 <= 0)
1333	grp->fd2 = 2;	1092	grp->int2 = 2;
1334		1093
1335	aio_grp_feed (grp);	1094	eio_grp_limit (grp, grp->int2);
1336	}	1095	}
1337		1096

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