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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.46 by root, Sun Oct 22 00:49:29 2006 UTC vs.
Revision 1.156 by root, Thu Nov 12 00:01:52 2009 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	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	/* perl namespace pollution */
25	# if __linux	21	#undef VERSION
26	# include <sys/sendfile.h>	22
27	# elif __freebsd	23	#ifdef _WIN32
28	# include <sys/socket.h>	24
29	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	26	# undef malloc
31	# include <sys/socket.h>	27	# undef free
32	# elif __solaris /* not yet */	28
33	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
34	# else	61	#else
35	# error sendfile support requested but not available	62
36	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
37	#endif	70	#endif
38		71
39	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
41	# define NAME_MAX 4096	74	#undef readdir
		75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
42	#endif	89	#endif
43		90
44	#if __ia64	91	/*****************************************************************************/
45	# define STACKSIZE 65536	92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	95	#else
47	# define STACKSIZE 8192	96	# define expect(expr,value) (expr)
48	#endif	97	#endif
49		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
		149
50	enum {	150	enum {
51	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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	};	152	};
63		153
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		155
67	typedef struct aio_cb
68	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
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;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
93		158
94	static int started, wanted;	159	static SV *on_next_submit;
95	static volatile int nreqs;	160	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	161	static int max_outstanding;
97	static int respipe [2];
98		162
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	163	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		164
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	165	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	166	static void req_cancel (aio_req req);
		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	s_epipe_signal (&respipe);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	s_epipe_drain (&respipe);
		178	}
107		179
108	/* must be called at most once */	180	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
110	{	182	{
		183	if (!req->self)
		184	{
111	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		187	}
113		188
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
115	}	190	}
116		191
117	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
118	{	193	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	194	MAGIC *mg;
		195
		196	if (!SvROK (sv)
		197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		198	&& SvSTASH (SvRV (sv)) != aio_req_stash
		199	&& !sv_derived_from (sv, "IO::AIO::REQ")))
120	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
121		201
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		203
124	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	205	}
126		206
127	static void poll_wait ()	207	static void aio_grp_feed (aio_req grp)
128	{	208	{
129	if (nreqs && !ress)	209	if (grp->sv2 && SvOK (grp->sv2))
130	{	210	{
131	fd_set rfd;	211	dSP;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		212
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	213	ENTER;
		214	SAVETMPS;
		215	PUSHMARK (SP);
		216	XPUSHs (req_sv (grp, aio_grp_stash));
		217	PUTBACK;
		218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		219	SPAGAIN;
		220	FREETMPS;
		221	LEAVE;
136	}	222	}
137	}	223	}
138		224
		225	static void req_submit (eio_req *req)
		226	{
		227	eio_submit (req);
		228
		229	if (expect_false (on_next_submit))
		230	{
		231	dSP;
		232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
		239	}
		240	}
		241
139	static void req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
140	{	243	{
141	dSP;	244	dSP;
142	int errorno = errno;
143		245
144	if (req->cancelled || !SvOK (req->callback))	246	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	247	SvREADONLY_off (req->sv2);
146		248
147	errno = req->errorno;	249	if (!EIO_CANCELLED (req) && req->callback)
148
149	ENTER;
150	PUSHMARK (SP);
151
152	switch (req->type)
153	{	250	{
154	case REQ_READDIR:	251	ENTER;
		252	SAVETMPS;
		253	PUSHMARK (SP);
		254	EXTEND (SP, 1);
		255
		256	switch (req->type)
155	{	257	{
156	SV *rv = &PL_sv_undef;	258	case EIO_READDIR:
157
158	if (req->result >= 0)
159	{	259	{
160	char *buf = req->data2ptr;	260	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		261
163	while (req->result)	262	if (req->result >= 0)
164	{	263	{
		264	int i;
		265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
165	SV *sv = newSVpv (buf, 0);	267	AV *av = newAV ();
166		268
167	av_push (av, sv);	269	av_extend (av, req->result - 1);
		270
		271	for (i = 0; i < req->result; ++i)
		272	{
		273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
		297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
168	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
169	req->result--;	306	}
		307	}
		308
		309	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	310	}
171		311
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
173	}	316	}
		317	break;
174		318
		319	case EIO_OPEN:
		320	{
		321	/* convert fd to fh */
		322	SV *fh = &PL_sv_undef;
		323
		324	if (req->result >= 0)
		325	{
		326	GV *gv = (GV *)sv_newmortal ();
		327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, aio_stash, sym, symlen, 0);
		333
		334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
175	XPUSHs (rv);	346	PUSHs (fh);
		347	}
		348	break;
		349
		350	case EIO_GROUP:
		351	req->int1 = 2; /* mark group as finished */
		352
		353	if (req->sv1)
		354	{
		355	int i;
		356	AV *av = (AV *)req->sv1;
		357
		358	EXTEND (SP, AvFILL (av) + 1);
		359	for (i = 0; i <= AvFILL (av); ++i)
		360	PUSHs (*av_fetch (av, i, 0));
		361	}
		362	break;
		363
		364	case EIO_NOP:
		365	case EIO_BUSY:
		366	break;
		367
		368	case EIO_READLINK:
		369	if (req->result > 0)
		370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		371	break;
		372
		373	case EIO_STAT:
		374	case EIO_LSTAT:
		375	case EIO_FSTAT:
		376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		377	PL_laststatval = req->result;
		378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		379	PUSHs (sv_2mortal (newSViv (req->result)));
		380	break;
		381
		382	case EIO_READ:
		383	{
		384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
		390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
		396
		397	default:
		398	PUSHs (sv_2mortal (newSViv (req->result)));
		399	break;
176	}	400	}
177	break;
178		401
179	case REQ_OPEN:	402	errno = req->errorno;
180	{
181	/* convert fd to fh */
182	SV *fh;
183		403
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	404	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
187	SPAGAIN;	406	SPAGAIN;
188		407
189	fh = SvREFCNT_inc (POPs);	408	FREETMPS;
		409	LEAVE;
190		410
191	PUSHMARK (SP);	411	PUTBACK;
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}	412	}
204		413
205		414	return !!SvTRUE (ERRSV);
206	PUTBACK;
207	call_sv (req->callback, G_VOID | G_EVAL);
208	SPAGAIN;
209
210	if (SvTRUE (ERRSV))
211	{
212	req_free (req);
213	croak (0);
214	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	415	}
220		416
221	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
222	{	418	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	419	if (req->self)
239	{	420	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
242	}	423	}
243		424
244	if (req->data)
245	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	425	SvREFCNT_dec (req->sv1);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
258
259	if (req->type == REQ_READDIR && req->result >= 0)
260	free (req->data2ptr);
261		428
262	Safefree (req);	429	Safefree (req);
263	}	430	}
264		431
265	static void req_cancel (aio_req req)	432	static void req_cancel_subs (aio_req grp)
266	{	433	{
267	req->cancelled = 1;	434	aio_req sub;
268		435
269	if (req->type == REQ_GROUP)	436	if (grp->type != EIO_GROUP)
		437	return;
		438
		439	SvREFCNT_dec (grp->sv2);
		440	grp->sv2 = 0;
		441
		442	eio_grp_cancel (grp);
		443	}
		444
		445	static void
		446	create_respipe (void)
		447	{
		448	if (s_epipe_renew (&respipe))
		449	croak ("IO::AIO: unable to initialize result pipe");
		450	}
		451
		452	static void poll_wait (void)
		453	{
		454	while (eio_nreqs ())
270	{	455	{
271	aio_req sub;	456	int size;
272		457
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	458	X_LOCK (reslock);
274	req_cancel (sub);	459	size = res_queue.size;
		460	X_UNLOCK (reslock);
		461
		462	if (size)
		463	return;
		464
		465	etp_maybe_start_thread ();
		466
		467	s_epipe_wait (&respipe);
275	}	468	}
276	}	469	}
277		470
278	static int poll_cb ()	471	static int poll_cb (void)
279	{	472	{
280	dSP;
281	int count = 0;
282	int do_croak = 0;
283	aio_req req;
284
285	for (;;)	473	for (;;)
286	{	474	{
287	pthread_mutex_lock (&reslock);	475	int res = eio_poll ();
288	req = ress;
289		476
290	if (req)	477	if (res > 0)
291	{
292	ress = req->next;
293
294	if (!ress)
295	{
296	/* read any signals sent by the worker threads */
297	char buf [32];
298	while (read (respipe [0], buf, 32) == 32)
299	;
300
301	rese = 0;
302	}
303	}
304
305	pthread_mutex_unlock (&reslock);
306
307	if (!req)
308	break;	478	croak (0);
309		479
310	nreqs--;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
		481	return res;
311		482
312	if (req->type == REQ_QUIT)	483	poll_wait ();
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	484	}
341
342	return count;
343	}
344
345	static void *aio_proc(void *arg);
346
347	static void start_thread (void)
348	{
349	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	pthread_attr_t attr;
352
353	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356
357	sigfillset (&fullsigset);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359
360	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
361	started++;
362
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);
364	}
365
366	static void req_send (aio_req req)
367	{
368	while (started < wanted && nreqs >= started)
369	start_thread ();
370
371	nreqs++;
372
373	pthread_mutex_lock (&reqlock);
374
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}
399
400	static void end_thread (void)
401	{
402	aio_req req;
403	Newz (0, req, 1, aio_cb);
404	req->type = REQ_QUIT;
405
406	req_send (req);
407	}
408
409	static void min_parallel (int nthreads)
410	{
411	if (wanted < nthreads)
412	wanted = nthreads;
413	}
414
415	static void max_parallel (int nthreads)
416	{
417	int cur = started;
418
419	if (wanted > nthreads)
420	wanted = nthreads;
421
422	while (cur > wanted)
423	{
424	end_thread ();
425	cur--;
426	}
427
428	while (started > wanted)
429	{
430	poll_wait ();
431	poll_cb ();
432	}
433	}
434
435	static void create_pipe ()
436	{
437	if (pipe (respipe))
438	croak ("unable to initialize result pipe");
439
440	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
441	croak ("cannot set result pipe to nonblocking mode");
442
443	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
444	croak ("cannot set result pipe to nonblocking mode");
445	}
446
447	/*****************************************************************************/
448	/* work around various missing functions */
449
450	#if !HAVE_PREADWRITE
451	# define pread aio_pread
452	# define pwrite aio_pwrite
453
454	/*
455	* make our pread/pwrite safe against themselves, but not against
456	* normal read/write by using a mutex. slows down execution a lot,
457	* but that's your problem, not mine.
458	*/
459	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
460
461	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
462	{
463	ssize_t res;
464	off_t ooffset;
465
466	pthread_mutex_lock (&preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);
472
473	return res;
474	}
475
476	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
477	{
478	ssize_t res;
479	off_t ooffset;
480
481	pthread_mutex_lock (&preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);
487
488	return res;
489	}
490	#endif
491
492	#if !HAVE_FDATASYNC
493	# define fdatasync fsync
494	#endif
495
496	#if !HAVE_READAHEAD
497	# define readahead aio_readahead
498
499	static ssize_t readahead (int fd, off_t offset, size_t count)
500	{
501	char readahead_buf[4096];
502
503	while (count > 0)
504	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
506
507	pread (fd, readahead_buf, len, offset);
508	offset += len;
509	count -= len;
510	}
511
512	errno = 0;
513	}
514	#endif
515
516	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r
518
519	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
520
521	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
522	{
523	struct dirent *e;
524	int errorno;
525
526	pthread_mutex_lock (&readdirlock);
527
528	e = readdir (dirp);
529	errorno = errno;
530
531	if (e)
532	{
533	*res = ent;
534	strcpy (ent->d_name, e->d_name);
535	}
536	else
537	*res = 0;
538
539	pthread_mutex_unlock (&readdirlock);
540
541	errno = errorno;
542	return e ? 0 : -1;
543	}
544	#endif
545
546	/* sendfile always needs emulation */
547	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
548	{
549	ssize_t res;
550
551	if (!count)
552	return 0;
553
554	#if HAVE_SENDFILE
555	# if __linux
556	res = sendfile (ofd, ifd, &offset, count);
557
558	# elif __freebsd
559	/*
560	* Of course, the freebsd sendfile is a dire hack with no thoughts
561	* wasted on making it similar to other I/O functions.
562	*/
563	{
564	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566
567	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
569	res = sbytes;
570	}
571
572	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);
574
575	# elif __solaris
576	{
577	struct sendfilevec vec;
578	size_t sbytes;
579
580	vec.sfv_fd = ifd;
581	vec.sfv_flag = 0;
582	vec.sfv_off = offset;
583	vec.sfv_len = count;
584
585	res = sendfilev (ofd, &vec, 1, &sbytes);
586
587	if (res < 0 && sbytes)
588	res = sbytes;
589	}
590
591	# endif
592	#else
593	res = -1;
594	errno = ENOSYS;
595	#endif
596
597	if (res < 0
598	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
599	#if __solaris
600	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
601	#endif
602	)
603	)
604	{
605	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];
607	res = 0;
608
609	while (count)
610	{
611	ssize_t cnt;
612
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
614
615	if (cnt <= 0)
616	{
617	if (cnt && !res) res = -1;
618	break;
619	}
620
621	cnt = write (ofd, buf, cnt);
622
623	if (cnt <= 0)
624	{
625	if (cnt && !res) res = -1;
626	break;
627	}
628
629	offset += cnt;
630	res += cnt;
631	count -= cnt;
632	}
633	}
634
635	return res;
636	}
637
638	/* read a full directory */
639	static int scandir_ (const char *path, void **namesp)
640	{
641	DIR *dirp = opendir (path);
642	union
643	{
644	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;
647	struct dirent *entp;
648	char *name, *names;
649	int memlen = 4096;
650	int memofs = 0;
651	int res = 0;
652	int errorno;
653
654	if (!dirp)
655	return -1;
656
657	names = malloc (memlen);
658
659	for (;;)
660	{
661	errno = 0, readdir_r (dirp, &u.d, &entp);
662
663	if (!entp)
664	break;
665
666	name = entp->d_name;
667
668	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
669	{
670	int len = strlen (name) + 1;
671
672	res++;
673
674	while (memofs + len > memlen)
675	{
676	memlen *= 2;
677	names = realloc (names, memlen);
678	if (!names)
679	break;
680	}
681
682	memcpy (names + memofs, name, len);
683	memofs += len;
684	}
685	}
686
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;
695	}
696
697	*namesp = (void *)names;
698	return res;
699	}
700
701	/*****************************************************************************/
702
703	static void *aio_proc (void *thr_arg)
704	{
705	aio_req req;
706	int type;
707
708	do
709	{
710	pthread_mutex_lock (&reqlock);
711
712	for (;;)
713	{
714	req = reqs;
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721
722	if (req)
723	break;
724
725	pthread_cond_wait (&reqwait, &reqlock);
726	}
727
728	pthread_mutex_unlock (&reqlock);
729
730	errno = 0; /* strictly unnecessary */
731
732	if (!req->cancelled)
733	switch (req->type)
734	{
735	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
736	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
737
738	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
739	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
740
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744
745	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
746	case REQ_CLOSE: req->result = close (req->fd); break;
747	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
748	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
749	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
756
757	case REQ_SLEEP:
758	{
759	struct timeval tv;
760
761	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;
763
764	req->result = select (0, 0, 0, 0, &tv);
765	}
766
767	case REQ_QUIT:
768	break;
769
770	default:
771	req->result = ENOSYS;
772	break;
773	}
774
775	req->errorno = errno;
776
777	pthread_mutex_lock (&reslock);
778
779	req->next = 0;
780
781	if (rese)
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);
792	}
793
794	pthread_mutex_unlock (&reslock);
795	}
796	while (type != REQ_QUIT);
797
798	return 0;
799	}
800
801	/*****************************************************************************/
802
803	static void atfork_prepare (void)
804	{
805	pthread_mutex_lock (&reqlock);
806	pthread_mutex_lock (&reslock);
807	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);
809	#endif
810	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);
812	#endif
813	}
814
815	static void atfork_parent (void)
816	{
817	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);
819	#endif
820	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);
822	#endif
823	pthread_mutex_unlock (&reslock);
824	pthread_mutex_unlock (&reqlock);
825	}	485	}
826		486
827	static void atfork_child (void)	487	static void atfork_child (void)
828	{	488	{
829	aio_req prv;
830
831	started = 0;
832
833	while (reqs)
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);
838	}
839
840	reqs = reqe = 0;
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850
851	close (respipe [0]);
852	close (respipe [1]);
853	create_pipe ();	489	create_respipe ();
		490	}
854		491
855	atfork_parent ();	492	static SV *
		493	get_cb (SV *cb_sv)
		494	{
		495	SvGETMAGIC (cb_sv);
		496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
856	}	497	}
857		498
858	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
859	aio_req req; \	501	aio_req req; \
		502	int req_pri = next_pri; \
		503	next_pri = EIO_PRI_DEFAULT; \
860	\	504	\
861	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
862	croak ("callback must be undef or of reference type"); \
863	\	506	\
864	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
865	if (!req) \	508	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
867	\	510	\
868	req->callback = newSVsv (callback)	511	req->callback = SvREFCNT_inc (cb_cv); \
		512	req->pri = req_pri
869		513
870	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
871	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
872	\	518	\
873	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
874	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
875		521
876	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
877		523
878	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
879		525
880	BOOT:	526	BOOT:
881	{	527	{
		528	static const struct {
		529	const char *name;
		530	IV iv;
		531	} *civ, const_iv[] = {
		532	# define const_iv(name, value) { # name, (IV) value },
		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
		534	const_iv (EXDEV , EXDEV)
		535	const_iv (ENOSYS , ENOSYS)
		536	const_iv (O_RDONLY, O_RDONLY)
		537	const_iv (O_WRONLY, O_WRONLY)
		538	const_iv (O_CREAT , O_CREAT)
		539	const_iv (O_TRUNC , O_TRUNC)
		540	#ifndef _WIN32
		541	const_iv (S_IFIFO , S_IFIFO)
		542	#endif
		543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		549
		550	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		551	const_eio (SYNC_FILE_RANGE_WRITE)
		552	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		553
		554	const_eio (READDIR_DENTS)
		555	const_eio (READDIR_DIRS_FIRST)
		556	const_eio (READDIR_STAT_ORDER)
		557	const_eio (READDIR_FOUND_UNKNOWN)
		558
		559	const_eio (DT_UNKNOWN)
		560	const_eio (DT_FIFO)
		561	const_eio (DT_CHR)
		562	const_eio (DT_DIR)
		563	const_eio (DT_BLK)
		564	const_eio (DT_REG)
		565	const_eio (DT_LNK)
		566	const_eio (DT_SOCK)
		567	const_eio (DT_WHT)
		568	};
		569
882	HV *stash = gv_stashpv ("IO::AIO", 1);	570	aio_stash = gv_stashpv ("IO::AIO" , 1);
883	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	571	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
884	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	572	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
885	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
886		573
		574	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		575	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		576
887	create_pipe ();	577	create_respipe ();
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
889	}
890		578
		579	if (eio_init (want_poll, done_poll) < 0)
		580	croak ("IO::AIO: unable to initialise eio library");
		581
		582	/* atfork child called in fifo order, so before eio's handler */
		583	X_THREAD_ATFORK (0, 0, atfork_child);
		584	}
		585
891	void	586	void
892	min_parallel (nthreads)	587	max_poll_reqs (int nreqs)
893	int nthreads
894	PROTOTYPE: $	588	PROTOTYPE: $
		589	CODE:
		590	eio_set_max_poll_reqs (nreqs);
895		591
896	void	592	void
897	max_parallel (nthreads)	593	max_poll_time (double nseconds)
898	int nthreads
899	PROTOTYPE: $	594	PROTOTYPE: $
900
901	int
902	max_outstanding (nreqs)
903	int nreqs
904	PROTOTYPE: $
905	CODE:	595	CODE:
906	RETVAL = max_outstanding;	596	eio_set_max_poll_time (nseconds);
		597
		598	void
		599	min_parallel (int nthreads)
		600	PROTOTYPE: $
		601	CODE:
		602	eio_set_min_parallel (nthreads);
		603
		604	void
		605	max_parallel (int nthreads)
		606	PROTOTYPE: $
		607	CODE:
		608	eio_set_max_parallel (nthreads);
		609
		610	void
		611	max_idle (int nthreads)
		612	PROTOTYPE: $
		613	CODE:
		614	eio_set_max_idle (nthreads);
		615
		616	void
		617	max_outstanding (int maxreqs)
		618	PROTOTYPE: $
		619	CODE:
907	max_outstanding = nreqs;	620	max_outstanding = maxreqs;
908		621
909	void	622	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	623	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
911	SV * pathname
912	int flags
913	int mode
914	SV * callback
915	PROTOTYPE: $$$;$	624	PROTOTYPE: $$$;$
916	PPCODE:	625	PPCODE:
917	{	626	{
918	dREQ;	627	dREQ;
919		628
920	req->type = REQ_OPEN;	629	req->type = EIO_OPEN;
921	req->data = newSVsv (pathname);	630	req->sv1 = newSVsv (pathname);
922	req->dataptr = SvPVbyte_nolen (req->data);	631	req->ptr1 = SvPVbyte_nolen (req->sv1);
923	req->fd = flags;	632	req->int1 = flags;
924	req->mode = mode;	633	req->int2 = mode;
925		634
926	REQ_SEND;	635	REQ_SEND;
927	}	636	}
928		637
929	void	638	void
930	aio_close (fh,callback=&PL_sv_undef)	639	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
931	SV * fh
932	SV * callback
933	PROTOTYPE: $;$	640	PROTOTYPE: $;$
934	ALIAS:	641	ALIAS:
935	aio_close = REQ_CLOSE
936	aio_fsync = REQ_FSYNC	642	aio_fsync = EIO_FSYNC
937	aio_fdatasync = REQ_FDATASYNC	643	aio_fdatasync = EIO_FDATASYNC
938	PPCODE:	644	PPCODE:
939	{	645	{
		646	int fd = s_fileno_croak (fh, 0);
940	dREQ;	647	dREQ;
941		648
942	req->type = ix;	649	req->type = ix;
943	req->fh = newSVsv (fh);	650	req->sv1 = newSVsv (fh);
944	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	651	req->int1 = fd;
945		652
946	REQ_SEND (req);	653	REQ_SEND (req);
947	}	654	}
948		655
949	void	656	void
		657	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		658	PROTOTYPE: $$$$;$
		659	PPCODE:
		660	{
		661	int fd = s_fileno_croak (fh, 0);
		662	dREQ;
		663
		664	req->type = EIO_SYNC_FILE_RANGE;
		665	req->sv1 = newSVsv (fh);
		666	req->int1 = fd;
		667	req->offs = offset;
		668	req->size = nbytes;
		669	req->int2 = flags;
		670
		671	REQ_SEND (req);
		672	}
		673
		674	void
		675	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		676	PROTOTYPE: $;$
		677	PPCODE:
		678	{
		679	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		680	int fd = s_fileno_croak (fh, 0);
		681	dREQ;
		682
		683	if (close_pipe < 0)
		684	{
		685	int pipefd [2];
		686
		687	if (pipe (pipefd) < 0
		688	|| close (pipefd [1]) < 0
		689	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		690	abort (); /*D*/
		691
		692	close_pipe = pipefd [0];
		693	}
		694
		695	req->type = EIO_DUP2;
		696	req->int1 = close_pipe;
		697	req->sv2 = newSVsv (fh);
		698	req->int2 = fd;
		699
		700	REQ_SEND (req);
		701	}
		702
		703	void
950	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	704	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
951	SV * fh
952	UV offset
953	UV length
954	SV * data
955	UV dataoffset
956	SV * callback
957	ALIAS:	705	ALIAS:
958	aio_read = REQ_READ	706	aio_read = EIO_READ
959	aio_write = REQ_WRITE	707	aio_write = EIO_WRITE
960	PROTOTYPE: $$$$$;$	708	PROTOTYPE: $$$$$;$
961	PPCODE:	709	PPCODE:
962	{	710	{
963	aio_req req;
964	STRLEN svlen;	711	STRLEN svlen;
		712	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
965	char *svptr = SvPVbyte (data, svlen);	713	char *svptr = SvPVbyte (data, svlen);
966		714	UV len = SvUV (length);
967	SvUPGRADE (data, SVt_PV);
968	SvPOK_on (data);
969		715
970	if (dataoffset < 0)	716	if (dataoffset < 0)
971	dataoffset += svlen;	717	dataoffset += svlen;
972		718
973	if (dataoffset < 0 || dataoffset > svlen)	719	if (dataoffset < 0 || dataoffset > svlen)
974	croak ("data offset outside of string");	720	croak ("dataoffset outside of data scalar");
975		721
976	if (ix == REQ_WRITE)	722	if (ix == EIO_WRITE)
977	{	723	{
978	/* write: check length and adjust. */	724	/* write: check length and adjust. */
979	if (length < 0 || length + dataoffset > svlen)	725	if (!SvOK (length) || len + dataoffset > svlen)
980	length = svlen - dataoffset;	726	len = svlen - dataoffset;
981	}	727	}
982	else	728	else
983	{	729	{
984	/* read: grow scalar as necessary */	730	/* read: check type and grow scalar as necessary */
		731	SvUPGRADE (data, SVt_PV);
985	svptr = SvGROW (data, length + dataoffset);	732	svptr = SvGROW (data, len + dataoffset + 1);
986	}	733	}
987
988	if (length < 0)
989	croak ("length must not be negative");
990		734
991	{	735	{
992	dREQ;	736	dREQ;
993		737
994	req->type = ix;	738	req->type = ix;
995	req->fh = newSVsv (fh);	739	req->sv1 = newSVsv (fh);
996	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	740	req->int1 = fd;
997	: IoOFP (sv_2io (fh)));	741	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
998	req->offset = offset;	742	req->size = len;
999	req->length = length;
1000	req->data = SvREFCNT_inc (data);	743	req->sv2 = SvREFCNT_inc (data);
1001	req->dataptr = (char *)svptr + dataoffset;	744	req->ptr2 = (char *)svptr + dataoffset;
		745	req->stroffset = dataoffset;
1002		746
1003	if (!SvREADONLY (data))	747	if (!SvREADONLY (data))
1004	{	748	{
1005	SvREADONLY_on (data);	749	SvREADONLY_on (data);
1006	req->data2ptr = (void *)data;	750	req->flags |= FLAG_SV2_RO_OFF;
1007	}	751	}
1008		752
1009	REQ_SEND;	753	REQ_SEND;
1010	}	754	}
1011	}	755	}
1012		756
1013	void	757	void
		758	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		759	PROTOTYPE: $$;$
		760	PPCODE:
		761	{
		762	SV *data;
		763	dREQ;
		764
		765	req->type = EIO_READLINK;
		766	req->sv1 = newSVsv (path);
		767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		768
		769	REQ_SEND;
		770	}
		771
		772	void
1014	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	773	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1015	SV * out_fh
1016	SV * in_fh
1017	UV in_offset
1018	UV length
1019	SV * callback
1020	PROTOTYPE: $$$$;$	774	PROTOTYPE: $$$$;$
1021	PPCODE:	775	PPCODE:
1022	{	776	{
		777	int ifd = s_fileno_croak (in_fh , 0);
		778	int ofd = s_fileno_croak (out_fh, 1);
1023	dREQ;	779	dREQ;
1024		780
1025	req->type = REQ_SENDFILE;	781	req->type = EIO_SENDFILE;
1026	req->fh = newSVsv (out_fh);	782	req->sv1 = newSVsv (out_fh);
1027	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	783	req->int1 = ofd;
1028	req->fh2 = newSVsv (in_fh);	784	req->sv2 = newSVsv (in_fh);
1029	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	785	req->int2 = ifd;
1030	req->offset = in_offset;	786	req->offs = in_offset;
1031	req->length = length;	787	req->size = length;
1032		788
1033	REQ_SEND;	789	REQ_SEND;
1034	}	790	}
1035		791
1036	void	792	void
1037	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	793	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1038	SV * fh
1039	UV offset
1040	IV length
1041	SV * callback
1042	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1043	PPCODE:	795	PPCODE:
1044	{	796	{
		797	int fd = s_fileno_croak (fh, 0);
1045	dREQ;	798	dREQ;
1046		799
1047	req->type = REQ_READAHEAD;	800	req->type = EIO_READAHEAD;
1048	req->fh = newSVsv (fh);	801	req->sv1 = newSVsv (fh);
1049	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	802	req->int1 = fd;
1050	req->offset = offset;	803	req->offs = offset;
1051	req->length = length;	804	req->size = length;
1052		805
1053	REQ_SEND;	806	REQ_SEND;
1054	}	807	}
1055		808
1056	void	809	void
1057	aio_stat (fh_or_path,callback=&PL_sv_undef)	810	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1058	SV * fh_or_path
1059	SV * callback
1060	ALIAS:	811	ALIAS:
1061	aio_stat = REQ_STAT	812	aio_stat = EIO_STAT
1062	aio_lstat = REQ_LSTAT	813	aio_lstat = EIO_LSTAT
1063	PPCODE:	814	PPCODE:
1064	{	815	{
1065	dREQ;	816	dREQ;
1066		817
1067	New (0, req->statdata, 1, Stat_t);	818	req->sv1 = newSVsv (fh_or_path);
1068	if (!req->statdata)
1069	{
1070	req_free (req);
1071	croak ("out of memory during aio_req->statdata allocation");
1072	}
1073		819
1074	if (SvPOK (fh_or_path))	820	if (SvPOK (req->sv1))
1075	{	821	{
1076	req->type = ix;	822	req->type = ix;
1077	req->data = newSVsv (fh_or_path);
1078	req->dataptr = SvPVbyte_nolen (req->data);	823	req->ptr1 = SvPVbyte_nolen (req->sv1);
1079	}	824	}
1080	else	825	else
1081	{	826	{
1082	req->type = REQ_FSTAT;	827	req->type = EIO_FSTAT;
1083	req->fh = newSVsv (fh_or_path);
1084	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1085	}	829	}
1086		830
1087	REQ_SEND;	831	REQ_SEND;
1088	}	832	}
1089		833
1090	void	834	void
		835	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		836	PPCODE:
		837	{
		838	dREQ;
		839
		840	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		841	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		842	req->sv1 = newSVsv (fh_or_path);
		843
		844	if (SvPOK (req->sv1))
		845	{
		846	req->type = EIO_UTIME;
		847	req->ptr1 = SvPVbyte_nolen (req->sv1);
		848	}
		849	else
		850	{
		851	req->type = EIO_FUTIME;
		852	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		853	}
		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		860	PPCODE:
		861	{
		862	dREQ;
		863
		864	req->sv1 = newSVsv (fh_or_path);
		865	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_TRUNCATE;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FTRUNCATE;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		883	ALIAS:
		884	aio_chmod = EIO_CHMOD
		885	aio_mkdir = EIO_MKDIR
		886	PPCODE:
		887	{
		888	dREQ;
		889
		890	req->int2 = mode;
		891	req->sv1 = newSVsv (fh_or_path);
		892
		893	if (SvPOK (req->sv1))
		894	{
		895	req->type = ix;
		896	req->ptr1 = SvPVbyte_nolen (req->sv1);
		897	}
		898	else
		899	{
		900	req->type = EIO_FCHMOD;
		901	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		902	}
		903
		904	REQ_SEND;
		905	}
		906
		907	void
		908	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		914	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		915	req->sv1 = newSVsv (fh_or_path);
		916
		917	if (SvPOK (req->sv1))
		918	{
		919	req->type = EIO_CHOWN;
		920	req->ptr1 = SvPVbyte_nolen (req->sv1);
		921	}
		922	else
		923	{
		924	req->type = EIO_FCHOWN;
		925	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		926	}
		927
		928	REQ_SEND;
		929	}
		930
		931	void
		932	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		933	PPCODE:
		934	{
		935	dREQ;
		936
		937	req->type = EIO_READDIR;
		938	req->sv1 = newSVsv (pathname);
		939	req->ptr1 = SvPVbyte_nolen (req->sv1);
		940	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		941
		942	if (flags & EIO_READDIR_DENTS)
		943	req->int1 |= EIO_READDIR_CUSTOM2;
		944
		945	REQ_SEND;
		946	}
		947
		948	void
1091	aio_unlink (pathname,callback=&PL_sv_undef)	949	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1092	SV * pathname
1093	SV * callback
1094	ALIAS:	950	ALIAS:
1095	aio_unlink = REQ_UNLINK	951	aio_unlink = EIO_UNLINK
1096	aio_rmdir = REQ_RMDIR	952	aio_rmdir = EIO_RMDIR
1097	aio_readdir = REQ_READDIR	953	aio_readdir = EIO_READDIR
1098	PPCODE:	954	PPCODE:
1099	{	955	{
1100	dREQ;	956	dREQ;
1101		957
1102	req->type = ix;	958	req->type = ix;
1103	req->data = newSVsv (pathname);	959	req->sv1 = newSVsv (pathname);
1104	req->dataptr = SvPVbyte_nolen (req->data);	960	req->ptr1 = SvPVbyte_nolen (req->sv1);
		961
		962	REQ_SEND;
		963	}
		964
		965	void
		966	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		967	ALIAS:
		968	aio_link = EIO_LINK
		969	aio_symlink = EIO_SYMLINK
		970	aio_rename = EIO_RENAME
		971	PPCODE:
		972	{
		973	dREQ;
		974
		975	req->type = ix;
		976	req->sv1 = newSVsv (oldpath);
		977	req->ptr1 = SvPVbyte_nolen (req->sv1);
		978	req->sv2 = newSVsv (newpath);
		979	req->ptr2 = SvPVbyte_nolen (req->sv2);
1105		980
1106	REQ_SEND;	981	REQ_SEND;
1107	}	982	}
1108		983
1109	void	984	void
1110	aio_link (oldpath,newpath,callback=&PL_sv_undef)	985	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1111	SV * oldpath
1112	SV * newpath
1113	SV * callback
1114	ALIAS:
1115	aio_link = REQ_LINK
1116	aio_symlink = REQ_SYMLINK
1117	aio_rename = REQ_RENAME
1118	PPCODE:	986	PPCODE:
1119	{	987	{
1120	dREQ;	988	dREQ;
1121		989
1122	req->type = ix;	990	req->type = EIO_MKNOD;
1123	req->fh = newSVsv (oldpath);	991	req->sv1 = newSVsv (pathname);
1124	req->data2ptr = SvPVbyte_nolen (req->fh);	992	req->ptr1 = SvPVbyte_nolen (req->sv1);
1125	req->data = newSVsv (newpath);	993	req->int2 = (mode_t)mode;
1126	req->dataptr = SvPVbyte_nolen (req->data);	994	req->offs = dev;
1127		995
1128	REQ_SEND;	996	REQ_SEND;
1129	}	997	}
1130		998
1131	void	999	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1000	aio_busy (double delay, SV *callback=&PL_sv_undef)
1133	double delay
1134	SV * callback
1135	PPCODE:	1001	PPCODE:
1136	{	1002	{
1137	dREQ;	1003	dREQ;
1138		1004
1139	req->type = REQ_SLEEP;	1005	req->type = EIO_BUSY;
1140	req->fd = delay < 0. ? 0 : delay;	1006	req->nv1 = delay < 0. ? 0. : delay;
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1142		1007
1143	REQ_SEND;	1008	REQ_SEND;
1144	}	1009	}
1145		1010
1146	void	1011	void
1147	aio_group (callback=&PL_sv_undef)	1012	aio_group (SV *callback=&PL_sv_undef)
1148	SV * callback
1149	PROTOTYPE: ;$	1013	PROTOTYPE: ;$
1150	PPCODE:	1014	PPCODE:
1151	{	1015	{
1152	dREQ;	1016	dREQ;
		1017
1153	req->type = REQ_GROUP;	1018	req->type = EIO_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156		1019
1157	req_send (req);	1020	req_submit (req);
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1021	XPUSHs (req_sv (req, aio_grp_stash));
1159	}	1022	}
		1023
		1024	void
		1025	aio_nop (SV *callback=&PL_sv_undef)
		1026	ALIAS:
		1027	aio_nop = EIO_NOP
		1028	aio_sync = EIO_SYNC
		1029	PPCODE:
		1030	{
		1031	dREQ;
		1032
		1033	req->type = ix;
		1034
		1035	REQ_SEND;
		1036	}
		1037
		1038	int
		1039	aioreq_pri (int pri = 0)
		1040	PROTOTYPE: ;$
		1041	CODE:
		1042	RETVAL = next_pri;
		1043	if (items > 0)
		1044	{
		1045	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1046	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1047	next_pri = pri;
		1048	}
		1049	OUTPUT:
		1050	RETVAL
		1051
		1052	void
		1053	aioreq_nice (int nice = 0)
		1054	CODE:
		1055	nice = next_pri - nice;
		1056	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1057	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1058	next_pri = nice;
1160		1059
1161	void	1060	void
1162	flush ()	1061	flush ()
1163	PROTOTYPE:	1062	PROTOTYPE:
1164	CODE:	1063	CODE:
1165	while (nreqs)	1064	while (eio_nreqs ())
1166	{	1065	{
1167	poll_wait ();	1066	poll_wait ();
1168	poll_cb ();	1067	poll_cb ();
1169	}	1068	}
1170		1069
1171	void	1070	int
1172	poll()	1071	poll()
1173	PROTOTYPE:	1072	PROTOTYPE:
1174	CODE:	1073	CODE:
1175	if (nreqs)
1176	{
1177	poll_wait ();	1074	poll_wait ();
1178	poll_cb ();	1075	RETVAL = poll_cb ();
1179	}	1076	OUTPUT:
		1077	RETVAL
1180		1078
1181	int	1079	int
1182	poll_fileno()	1080	poll_fileno()
1183	PROTOTYPE:	1081	PROTOTYPE:
1184	CODE:	1082	CODE:
1185	RETVAL = respipe [0];	1083	RETVAL = s_epipe_fd (&respipe);
1186	OUTPUT:	1084	OUTPUT:
1187	RETVAL	1085	RETVAL
1188		1086
1189	int	1087	int
1190	poll_cb(...)	1088	poll_cb(...)
…		…
1196		1094
1197	void	1095	void
1198	poll_wait()	1096	poll_wait()
1199	PROTOTYPE:	1097	PROTOTYPE:
1200	CODE:	1098	CODE:
1201	if (nreqs)
1202	poll_wait ();	1099	poll_wait ();
1203		1100
1204	int	1101	int
1205	nreqs()	1102	nreqs()
1206	PROTOTYPE:	1103	PROTOTYPE:
1207	CODE:	1104	CODE:
1208	RETVAL = nreqs;	1105	RETVAL = eio_nreqs ();
1209	OUTPUT:	1106	OUTPUT:
1210	RETVAL	1107	RETVAL
1211		1108
		1109	int
		1110	nready()
		1111	PROTOTYPE:
		1112	CODE:
		1113	RETVAL = eio_nready ();
		1114	OUTPUT:
		1115	RETVAL
		1116
		1117	int
		1118	npending()
		1119	PROTOTYPE:
		1120	CODE:
		1121	RETVAL = eio_npending ();
		1122	OUTPUT:
		1123	RETVAL
		1124
		1125	int
		1126	nthreads()
		1127	PROTOTYPE:
		1128	CODE:
		1129	RETVAL = eio_nthreads ();
		1130	OUTPUT:
		1131	RETVAL
		1132
		1133	int
		1134	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1135	PROTOTYPE: $$$$
		1136	CODE:
		1137	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1138	RETVAL = posix_fadvise (fh, offset, length, advice);
		1139	#else
		1140	RETVAL = errno = ENOSYS;
		1141	#endif
		1142	OUTPUT:
		1143	RETVAL
		1144
		1145	ssize_t
		1146	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1147	PROTOTYPE: $$$$
		1148	CODE:
		1149	eio_sendfile_sync (ofh, ifh, offset, count);
		1150
		1151	void _on_next_submit (SV *cb)
		1152	CODE:
		1153	SvREFCNT_dec (on_next_submit);
		1154	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1155
		1156	PROTOTYPES: DISABLE
		1157
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1158	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1159
1214	void	1160	void
1215	cancel (aio_req_ornot req)	1161	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1162	CODE:
1218	req_cancel (req);	1163	eio_cancel (req);
		1164
		1165	void
		1166	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	if (GIMME_V != G_VOID)
		1170	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1171
		1172	if (items > 1)
		1173	{
		1174	SV *cb_cv =get_cb (callback);
		1175
		1176	SvREFCNT_dec (req->callback);
		1177	req->callback = SvREFCNT_inc (cb_cv);
		1178	}
		1179	}
1219		1180
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1181	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1182
1222	void	1183	void
1223	add (aio_req grp, ...)	1184	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1185	PPCODE:
1226	{	1186	{
1227	int i;	1187	int i;
1228		1188
		1189	if (grp->int1 == 2)
		1190	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1191
1229	for (i = 1; i < items; ++i )	1192	for (i = 1; i < items; ++i )
1230	{	1193	{
		1194	aio_req req;
		1195
1231	if (GIMME_V != G_VOID)	1196	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1197	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1198
1234	aio_req req = SvAIO_REQ (ST (i));	1199	req = SvAIO_REQ (ST (i));
1235	printf ("req = %p\n", req);//D
1236		1200
1237	if (req)	1201	if (req)
1238	{	1202	eio_grp_add (grp, req);
1239	req->grp_prev = grp;
1240	req->grp_next = grp->grp_next;
1241	grp->grp_next->grp_prev = req;
1242	grp->grp_next = req;
1243
1244	req->grp = grp;
1245	}	1203	}
1246	}
1247	}	1204	}
1248		1205
		1206	void
		1207	cancel_subs (aio_req_ornot req)
		1208	CODE:
		1209	req_cancel_subs (req);
		1210
		1211	void
		1212	result (aio_req grp, ...)
		1213	CODE:
		1214	{
		1215	int i;
		1216	AV *av;
		1217
		1218	grp->errorno = errno;
		1219
		1220	av = newAV ();
		1221	av_extend (av, items - 1);
		1222
		1223	for (i = 1; i < items; ++i )
		1224	av_push (av, newSVsv (ST (i)));
		1225
		1226	SvREFCNT_dec (grp->sv1);
		1227	grp->sv1 = (SV *)av;
		1228	}
		1229
		1230	void
		1231	errno (aio_req grp, int errorno = errno)
		1232	CODE:
		1233	grp->errorno = errorno;
		1234
		1235	void
		1236	limit (aio_req grp, int limit)
		1237	CODE:
		1238	eio_grp_limit (grp, limit);
		1239
		1240	void
		1241	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1242	CODE:
		1243	{
		1244	SvREFCNT_dec (grp->sv2);
		1245	grp->sv2 = newSVsv (callback);
		1246	grp->feed = aio_grp_feed;
		1247
		1248	if (grp->int2 <= 0)
		1249	grp->int2 = 2;
		1250
		1251	eio_grp_limit (grp, grp->int2);
		1252	}
		1253

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