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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.157 by root, Sat Jan 2 12:58:37 2010 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 <sys/types.h>	14	#include <sys/types.h>
14	#include <sys/stat.h>	15	#include <sys/stat.h>
15	#include <limits.h>	16	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	17	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	18	#include <sched.h>
20		19
21	#if HAVE_SENDFILE	20	/* perl namespace pollution */
22	# if __linux	21	#undef VERSION
23	# include <sys/sendfile.h>	22
24	# elif __freebsd	23	#ifdef _WIN32
25	# include <sys/socket.h>	24
26	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
27	# elif __hpux	26	# undef malloc
28	# include <sys/socket.h>	27	# undef free
29	# elif __solaris /* not yet */	28
30	# 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
31	# else	61	#else
32	# error sendfile support requested but not available	62
33	# 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
34	#endif	70	#endif
35		71
36	#if __ia64	72	/* perl stupidly overrides readdir and maybe others */
37	# define STACKSIZE 65536	73	/* with thread-unsafe versions, imagine that :( */
		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
38	#else	85	#else
39	# define STACKSIZE 8192	86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
40	#endif	89	#endif
41		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		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
42	enum {	150	enum {
43	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
44	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,
50	REQ_READDIR,
51	REQ_SYMLINK,
52	};	152	};
53		153
54	typedef struct aio_cb {	154	#include "libeio/eio.c"
55	struct aio_cb *volatile next;
56		155
57	int type;
58
59	/* should receive a cleanup, with unions */
60	int fd, fd2;
61	off_t offset;
62	size_t length;
63	ssize_t result;
64	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70
71	Stat_t *statdata;
72	} aio_cb;
73
74	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
		157	typedef eio_req *aio_req_ornot;
75		158
76	static int started, wanted;	159	static SV *on_next_submit;
77	static volatile int nreqs;	160	static int next_pri = EIO_PRI_DEFAULT;
78	static int max_outstanding = 1<<30;	161	static int max_outstanding;
79	static int respipe [2];
80		162
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	163	static s_epipe respipe;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		164
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	165	static void req_destroy (aio_req req);
86	static volatile aio_req ress, rese; /* queue start, queue end */
87
88	static void free_req (aio_req req)	166	static void req_cancel (aio_req req);
89	{
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		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	}
		179
		180	/* must be called at most once */
		181	static SV *req_sv (aio_req req, HV *stash)
		182	{
		183	if (!req->self)
		184	{
		185	req->self = (SV *)newHV ();
		186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		187	}
		188
		189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		190	}
		191
		192	static aio_req SvAIO_REQ (SV *sv)
		193	{
		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")))
		200	croak ("object of class IO::AIO::REQ expected");
		201
		202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		203
		204	return mg ? (aio_req)mg->mg_ptr : 0;
		205	}
		206
		207	static void aio_grp_feed (aio_req grp)
		208	{
		209	if (grp->sv2 && SvOK (grp->sv2))
		210	{
		211	dSP;
		212
		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;
		222	}
		223	}
		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
		242	static int req_invoke (eio_req *req)
		243	{
		244	dSP;
		245
		246	if (req->flags & FLAG_SV2_RO_OFF)
		247	SvREADONLY_off (req->sv2);
		248
		249	if (!EIO_CANCELLED (req) && req->callback)
		250	{
		251	ENTER;
		252	SAVETMPS;
		253	PUSHMARK (SP);
		254	EXTEND (SP, 1);
		255
		256	switch (req->type)
		257	{
		258	case EIO_READDIR:
		259	{
		260	SV *rv = &PL_sv_undef;
		261
		262	if (req->result >= 0)
		263	{
		264	int i;
		265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		267	AV *av = newAV ();
		268
		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);
		305	names += SvCUR (name) + 1;
		306	}
		307	}
		308
		309	rv = sv_2mortal (newRV_noinc ((SV *)av));
		310	}
		311
		312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		316	}
		317	break;
		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
		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;
		400	}
		401
		402	errno = req->errorno;
		403
		404	PUTBACK;
		405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		406	SPAGAIN;
		407
		408	FREETMPS;
		409	LEAVE;
		410
		411	PUTBACK;
		412	}
		413
		414	return !!SvTRUE (ERRSV);
		415	}
		416
		417	static void req_destroy (aio_req req)
		418	{
93	if (req->fh)	419	if (req->self)
		420	{
		421	sv_unmagic (req->self, PERL_MAGIC_ext);
94	SvREFCNT_dec (req->fh);	422	SvREFCNT_dec (req->self);
		423	}
95		424
96	if (req->fh2)	425	SvREFCNT_dec (req->sv1);
97	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107		428
108	Safefree (req);	429	Safefree (req);
109	}	430	}
110		431
		432	static void req_cancel_subs (aio_req grp)
		433	{
		434	aio_req sub;
		435
		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
111	static void	445	static void
112	poll_wait ()	446	create_respipe (void)
113	{	447	{
114	if (nreqs && !ress)	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 ())
115	{	455	{
116	fd_set rfd;	456	int size;
117	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);
119		457
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	458	X_LOCK (reslock);
		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);
121	}	468	}
122	}	469	}
123		470
124	static int	471	static int poll_cb (void)
125	poll_cb ()
126	{	472	{
127	dSP;
128	int count = 0;
129	int do_croak = 0;
130	aio_req req;
131
132	for (;;)	473	for (;;)
133	{	474	{
134	pthread_mutex_lock (&reslock);	475	int res = eio_poll ();
135	req = ress;
136		476
137	if (req)	477	if (res > 0)
138	{
139	ress = req->next;
140
141	if (!ress)
142	{
143	/* read any signals sent by the worker threads */
144	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)
146	;
147
148	rese = 0;
149	}
150	}
151
152	pthread_mutex_unlock (&reslock);
153
154	if (!req)
155	break;
156
157	nreqs--;
158
159	if (req->type == REQ_QUIT)
160	started--;
161	else
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);	478	croak (0);
235	}
236	}
237		479
238	LEAVE;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
		481	return res;
239		482
240	errno = errorno;	483	poll_wait ();
241	count++;
242	}
243
244	free_req (req);
245	}	484	}
246
247	return count;
248	}	485	}
249		486
250	static void *aio_proc(void *arg);	487	static void atfork_child (void)
251
252	static void
253	start_thread (void)
254	{	488	{
255	sigset_t fullsigset, oldsigset;	489	create_respipe ();
256	pthread_t tid;
257	pthread_attr_t attr;
258
259	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263	sigfillset (&fullsigset);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267	started++;
268
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}	490	}
271		491
272	static void	492	static SV *
273	send_req (aio_req req)	493	get_cb (SV *cb_sv)
274	{	494	{
275	while (started < wanted && nreqs >= started)	495	SvGETMAGIC (cb_sv);
276	start_thread ();	496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
277
278	nreqs++;
279
280	pthread_mutex_lock (&reqlock);
281
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}	497	}
306		498
307	static void	499	#define dREQ \
308	end_thread (void)	500	SV *cb_cv; \
309	{
310	aio_req req;	501	aio_req req; \
		502	int req_pri = next_pri; \
		503	next_pri = EIO_PRI_DEFAULT; \
		504	\
		505	cb_cv = get_cb (callback); \
		506	\
311	Newz (0, req, 1, aio_cb);	507	Newz (0, req, 1, eio_req); \
312	req->type = REQ_QUIT;	508	if (!req) \
		509	croak ("out of memory during eio_req allocation"); \
		510	\
		511	req->callback = SvREFCNT_inc (cb_cv); \
		512	req->pri = req_pri
313		513
314	send_req (req);	514	#define REQ_SEND \
315	}	515	PUTBACK; \
		516	req_submit (req); \
		517	SPAGAIN; \
		518	\
		519	if (GIMME_V != G_VOID) \
		520	XPUSHs (req_sv (req, aio_req_stash));
316		521
317	static void min_parallel (int nthreads)	522	MODULE = IO::AIO PACKAGE = IO::AIO
318	{
319	if (wanted < nthreads)
320	wanted = nthreads;
321	}
322		523
323	static void max_parallel (int nthreads)	524	PROTOTYPES: ENABLE
324	{
325	int cur = started;
326		525
327	if (wanted > nthreads)	526	BOOT:
328	wanted = nthreads;
329
330	while (cur > wanted)
331	{
332	end_thread ();
333	cur--;
334	}
335
336	while (started > wanted)
337	{
338	poll_wait ();
339	poll_cb ();
340	}
341	}
342
343	static void create_pipe ()
344	{	527	{
345	if (pipe (respipe))	528	static const struct {
346	croak ("unable to initialize result pipe");	529	const char *name;
347		530	IV iv;
348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	531	} *civ, const_iv[] = {
349	croak ("cannot set result pipe to nonblocking mode");	532	# define const_iv(name, value) { # name, (IV) value },
350		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	534	const_iv (EXDEV , EXDEV)
352	croak ("cannot set result pipe to nonblocking mode");	535	const_iv (ENOSYS , ENOSYS)
353	}	536	const_iv (O_RDONLY, O_RDONLY)
354		537	const_iv (O_WRONLY, O_WRONLY)
355	/*****************************************************************************/	538	const_iv (O_CREAT , O_CREAT)
356	/* work around various missing functions */	539	const_iv (O_TRUNC , O_TRUNC)
357		540	#ifndef _WIN32
358	#if !HAVE_PREADWRITE	541	const_iv (S_IFIFO , S_IFIFO)
359	# define pread aio_pread
360	# define pwrite aio_pwrite
361
362	/*
363	* make our pread/pwrite safe against themselves, but not against
364	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.
366	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368
369	static ssize_t
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{
372	ssize_t res;
373	off_t ooffset;
374
375	pthread_mutex_lock (&preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);
381
382	return res;
383	}
384
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)
387	{
388	ssize_t res;
389	off_t ooffset;
390
391	pthread_mutex_lock (&preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);
397
398	return res;
399	}
400	#endif	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)
401		549
402	#if !HAVE_FDATASYNC	550	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
403	# define fdatasync fsync	551	const_eio (SYNC_FILE_RANGE_WRITE)
404	#endif	552	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
405		553
406	#if !HAVE_READAHEAD	554	const_eio (READDIR_DENTS)
407	# define readahead aio_readahead	555	const_eio (READDIR_DIRS_FIRST)
		556	const_eio (READDIR_STAT_ORDER)
		557	const_eio (READDIR_FOUND_UNKNOWN)
408		558
409	static ssize_t	559	const_eio (DT_UNKNOWN)
410	readahead (int fd, off_t offset, size_t count)	560	const_eio (DT_FIFO)
411	{	561	const_eio (DT_CHR)
412	char readahead_buf[4096];	562	const_eio (DT_DIR)
413		563	const_eio (DT_BLK)
414	while (count > 0)	564	const_eio (DT_REG)
415	{	565	const_eio (DT_LNK)
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	566	const_eio (DT_SOCK)
417		567	const_eio (DT_WHT)
418	pread (fd, readahead_buf, len, offset);
419	offset += len;
420	count -= len;
421	}
422
423	errno = 0;
424	}
425	#endif
426
427	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r
429
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{
435	struct dirent *e;
436	int errorno;
437
438	pthread_mutex_lock (&readdirlock);
439
440	e = readdir (dirp);
441	errorno = errno;
442
443	if (e)
444	{
445	*res = ent;
446	strcpy (ent->d_name, e->d_name);
447	}
448	else
449	*res = 0;
450
451	pthread_mutex_unlock (&readdirlock);
452
453	errno = errorno;
454	return e ? 0 : -1;
455	}
456	#endif
457
458	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461	{
462	ssize_t res;
463
464	if (!count)
465	return 0;
466
467	#if HAVE_SENDFILE
468	# if __linux
469	res = sendfile (ofd, ifd, &offset, count);
470
471	# elif __freebsd
472	/*
473	* Of course, the freebsd sendfile is a dire hack with no thoughts
474	* wasted on making it similar to other I/O functions.
475	*/
476	{
477	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479
480	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
482	res = sbytes;
483	}	568	};
484		569
485	# elif __hpux	570	aio_stash = gv_stashpv ("IO::AIO" , 1);
486	res = sendfile (ofd, ifd, offset, count, 0, 0);	571	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		572	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
487		573
488	# elif __solaris	574	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
489	{	575	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
490	struct sendfilevec vec;
491	size_t sbytes;
492		576
493	vec.sfv_fd = ifd;
494	vec.sfv_flag = 0;
495	vec.sfv_off = offset;
496	vec.sfv_len = count;
497
498	res = sendfilev (ofd, &vec, 1, &sbytes);
499
500	if (res < 0 && sbytes)
501	res = sbytes;
502	}
503
504	# else
505	res = -1;
506	errno = ENOSYS;
507	# endif
508	#endif
509
510	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris
513	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
514	#endif
515	)
516	)
517	{
518	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];
520	res = 0;
521
522	for (;;)
523	{
524	ssize_t cnt;
525
526	cnt = pread (ifd, buf, 4096, offset);
527
528	if (cnt <= 0)
529	{
530	if (cnt && !res) res = -1;
531	break;
532	}
533
534	cnt = write (ofd, buf, cnt);
535
536	if (cnt <= 0)
537	{
538	if (cnt && !res) res = -1;
539	break;
540	}
541
542	offset += cnt;
543	res += cnt;
544	}
545	}
546
547	return res;
548	}
549
550	/* read a full directory */
551	static int
552	scandir_ (const char *path, void **namesp)
553	{
554	DIR *dirp = opendir (path);
555	union
556	{
557	struct dirent d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559	} u;
560	struct dirent *entp;
561	char *name, *names;
562	int memlen = 4096;
563	int memofs = 0;
564	int res = 0;
565	int errorno;
566
567	if (!dirp)
568	return -1;
569
570	names = malloc (memlen);
571
572	for (;;)
573	{
574	errno = 0, readdir_r (dirp, &u.d, &entp);
575
576	if (!entp)
577	break;
578
579	name = entp->d_name;
580
581	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582	{
583	int len = strlen (name) + 1;
584
585	res++;
586
587	while (memofs + len > memlen)
588	{
589	memlen *= 2;
590	names = realloc (names, memlen);
591	if (!names)
592	break;
593	}
594
595	memcpy (names + memofs, name, len);
596	memofs += len;
597	}
598	}
599
600	errorno = errno;
601	closedir (dirp);
602
603	if (errorno)
604	{
605	free (names);
606	errno = errorno;
607	res = -1;
608	}
609
610	*namesp = (void *)names;
611	return res;
612	}
613
614	/*****************************************************************************/
615
616	static void *
617	aio_proc (void *thr_arg)
618	{
619	aio_req req;
620	int type;
621
622	do
623	{
624	pthread_mutex_lock (&reqlock);
625
626	for (;;)
627	{
628	req = reqs;
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635
636	if (req)
637	break;
638
639	pthread_cond_wait (&reqwait, &reqlock);
640	}
641
642	pthread_mutex_unlock (&reqlock);
643
644	errno = 0; /* strictly unnecessary */
645
646	type = req->type;
647
648	switch (type)
649	{
650	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
651	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
652
653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
655
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
669
670	case REQ_QUIT:
671	break;
672
673	default:
674	req->result = ENOSYS;
675	break;
676	}
677
678	req->errorno = errno;
679
680	pthread_mutex_lock (&reslock);
681
682	req->next = 0;
683
684	if (rese)
685	{
686	rese->next = req;
687	rese = req;
688	}
689	else
690	{
691	rese = ress = req;
692
693	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);
695	}
696
697	pthread_mutex_unlock (&reslock);
698	}
699	while (type != REQ_QUIT);
700
701	return 0;
702	}
703
704	/*****************************************************************************/
705
706	static void atfork_prepare (void)
707	{
708	pthread_mutex_lock (&reqlock);
709	pthread_mutex_lock (&reslock);
710	#if !HAVE_PREADWRITE
711	pthread_mutex_lock (&preadwritelock);
712	#endif
713	#if !HAVE_READDIR_R
714	pthread_mutex_lock (&readdirlock);
715	#endif
716	}
717
718	static void atfork_parent (void)
719	{
720	#if !HAVE_READDIR_R
721	pthread_mutex_unlock (&readdirlock);
722	#endif
723	#if !HAVE_PREADWRITE
724	pthread_mutex_unlock (&preadwritelock);
725	#endif
726	pthread_mutex_unlock (&reslock);
727	pthread_mutex_unlock (&reqlock);
728	}
729
730	static void atfork_child (void)
731	{
732	aio_req prv;
733
734	started = 0;
735
736	while (reqs)
737	{
738	prv = reqs;
739	reqs = prv->next;
740	free_req (prv);
741	}
742
743	reqs = reqe = 0;
744
745	while (ress)
746	{
747	prv = ress;
748	ress = prv->next;
749	free_req (prv);
750	}
751
752	ress = rese = 0;
753
754	close (respipe [0]);
755	close (respipe [1]);
756	create_pipe ();	577	create_respipe ();
757		578
758	atfork_parent ();	579	if (eio_init (want_poll, done_poll) < 0)
759	}	580	croak ("IO::AIO: unable to initialise eio library");
760		581
761	#define dREQ \	582	/* atfork child called in fifo order, so before eio's handler */
762	aio_req req; \	583	X_THREAD_ATFORK (0, 0, atfork_child);
763	\
764	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \
766	\
767	Newz (0, req, 1, aio_cb); \
768	if (!req) \
769	croak ("out of memory during aio_req allocation"); \
770	\
771	req->callback = newSVsv (callback);
772
773	MODULE = IO::AIO PACKAGE = IO::AIO
774
775	PROTOTYPES: ENABLE
776
777	BOOT:
778	{
779	create_pipe ();
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
781	}	584	}
782		585
783	void	586	void
784	min_parallel(nthreads)	587	max_poll_reqs (int nreqs)
785	int nthreads
786	PROTOTYPE: $	588	PROTOTYPE: $
		589	CODE:
		590	eio_set_max_poll_reqs (nreqs);
787		591
788	void	592	void
789	max_parallel(nthreads)	593	max_poll_time (double nseconds)
790	int nthreads
791	PROTOTYPE: $	594	PROTOTYPE: $
792
793	int
794	max_outstanding(nreqs)
795	int nreqs
796	PROTOTYPE: $
797	CODE:	595	CODE:
798	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:
799	max_outstanding = nreqs;	620	max_outstanding = maxreqs;
800		621
801	void	622	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	623	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
803	SV * pathname
804	int flags
805	int mode
806	SV * callback
807	PROTOTYPE: $$$;$	624	PROTOTYPE: $$$;$
808	CODE:	625	PPCODE:
809	{	626	{
810	dREQ;	627	dREQ;
811		628
812	req->type = REQ_OPEN;	629	req->type = EIO_OPEN;
813	req->data = newSVsv (pathname);	630	req->sv1 = newSVsv (pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);	631	req->ptr1 = SvPVbyte_nolen (req->sv1);
815	req->fd = flags;	632	req->int1 = flags;
816	req->mode = mode;	633	req->int2 = mode;
817		634
818	send_req (req);	635	REQ_SEND;
819	}	636	}
820		637
821	void	638	void
822	aio_close(fh,callback=&PL_sv_undef)	639	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
823	SV * fh
824	SV * callback
825	PROTOTYPE: $;$	640	PROTOTYPE: $;$
826	ALIAS:	641	ALIAS:
827	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	642	aio_fsync = EIO_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	643	aio_fdatasync = EIO_FDATASYNC
830	CODE:	644	PPCODE:
831	{	645	{
		646	int fd = s_fileno_croak (fh, 0);
832	dREQ;	647	dREQ;
833		648
834	req->type = ix;	649	req->type = ix;
835	req->fh = newSVsv (fh);	650	req->sv1 = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	651	req->int1 = fd;
837		652
838	send_req (req);	653	REQ_SEND (req);
839	}	654	}
840		655
841	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: $$$$;$
		659	PPCODE:
		660	{
		661	int fd = s_fileno_croak (fh, 0);
		662	dREQ;
		663
		664	req->type = EIO_SYNC_FILE_RANGE;
		665	req->sv1 = newSVsv (fh);
		666	req->int1 = fd;
		667	req->offs = offset;
		668	req->size = nbytes;
		669	req->int2 = flags;
		670
		671	REQ_SEND (req);
		672	}
		673
		674	void
		675	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		676	PROTOTYPE: $;$
		677	PPCODE:
		678	{
		679	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		680	int fd = s_fileno_croak (fh, 0);
		681	dREQ;
		682
		683	if (close_pipe < 0)
		684	{
		685	int pipefd [2];
		686
		687	if (pipe (pipefd) < 0
		688	|| close (pipefd [1]) < 0
		689	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		690	abort (); /*D*/
		691
		692	close_pipe = pipefd [0];
		693	}
		694
		695	req->type = EIO_DUP2;
		696	req->int1 = close_pipe;
		697	req->sv2 = newSVsv (fh);
		698	req->int2 = fd;
		699
		700	REQ_SEND (req);
		701	}
		702
		703	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	704	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
843	SV * fh
844	UV offset
845	UV length
846	SV * data
847	UV dataoffset
848	SV * callback
849	ALIAS:	705	ALIAS:
850	aio_read = REQ_READ	706	aio_read = EIO_READ
851	aio_write = REQ_WRITE	707	aio_write = EIO_WRITE
852	PROTOTYPE: $$$$$;$	708	PROTOTYPE: $$$$$;$
853	CODE:	709	PPCODE:
854	{	710	{
855	aio_req req;
856	STRLEN svlen;	711	STRLEN svlen;
		712	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
857	char *svptr = SvPVbyte (data, svlen);	713	char *svptr = SvPVbyte (data, svlen);
858		714	UV len = SvUV (length);
859	SvUPGRADE (data, SVt_PV);
860	SvPOK_on (data);
861		715
862	if (dataoffset < 0)	716	if (dataoffset < 0)
863	dataoffset += svlen;	717	dataoffset += svlen;
864		718
865	if (dataoffset < 0 || dataoffset > svlen)	719	if (dataoffset < 0 || dataoffset > svlen)
866	croak ("data offset outside of string");	720	croak ("dataoffset outside of data scalar");
867		721
868	if (ix == REQ_WRITE)	722	if (ix == EIO_WRITE)
869	{	723	{
870	/* write: check length and adjust. */	724	/* write: check length and adjust. */
871	if (length < 0 || length + dataoffset > svlen)	725	if (!SvOK (length) || len + dataoffset > svlen)
872	length = svlen - dataoffset;	726	len = svlen - dataoffset;
873	}	727	}
874	else	728	else
875	{	729	{
876	/* read: grow scalar as necessary */	730	/* read: check type and grow scalar as necessary */
		731	SvUPGRADE (data, SVt_PV);
877	svptr = SvGROW (data, length + dataoffset);	732	svptr = SvGROW (data, len + dataoffset + 1);
878	}	733	}
879
880	if (length < 0)
881	croak ("length must not be negative");
882		734
883	{	735	{
884	dREQ;	736	dREQ;
885		737
886	req->type = ix;	738	req->type = ix;
887	req->fh = newSVsv (fh);	739	req->sv1 = newSVsv (fh);
888	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	740	req->int1 = fd;
889	: IoOFP (sv_2io (fh)));	741	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
890	req->offset = offset;	742	req->size = len;
891	req->length = length;
892	req->data = SvREFCNT_inc (data);	743	req->sv2 = SvREFCNT_inc (data);
893	req->dataptr = (char *)svptr + dataoffset;	744	req->ptr2 = (char *)svptr + dataoffset;
		745	req->stroffset = dataoffset;
894		746
895	if (!SvREADONLY (data))	747	if (!SvREADONLY (data))
896	{	748	{
897	SvREADONLY_on (data);	749	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	750	req->flags |= FLAG_SV2_RO_OFF;
899	}	751	}
900		752
901	send_req (req);	753	REQ_SEND;
902	}	754	}
903	}	755	}
904		756
905	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
906	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)
907	SV * out_fh
908	SV * in_fh
909	UV in_offset
910	UV length
911	SV * callback
912	PROTOTYPE: $$$$;$	774	PROTOTYPE: $$$$;$
913	CODE:	775	PPCODE:
914	{	776	{
		777	int ifd = s_fileno_croak (in_fh , 0);
		778	int ofd = s_fileno_croak (out_fh, 1);
915	dREQ;	779	dREQ;
916		780
917	req->type = REQ_SENDFILE;	781	req->type = EIO_SENDFILE;
918	req->fh = newSVsv (out_fh);	782	req->sv1 = newSVsv (out_fh);
919	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	783	req->int1 = ofd;
920	req->fh2 = newSVsv (in_fh);	784	req->sv2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	785	req->int2 = ifd;
922	req->offset = in_offset;	786	req->offs = in_offset;
923	req->length = length;	787	req->size = length;
924		788
925	send_req (req);	789	REQ_SEND;
926	}	790	}
927		791
928	void	792	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	793	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
930	SV * fh
931	UV offset
932	IV length
933	SV * callback
934	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
935	CODE:	795	PPCODE:
936	{	796	{
		797	int fd = s_fileno_croak (fh, 0);
937	dREQ;	798	dREQ;
938		799
939	req->type = REQ_READAHEAD;	800	req->type = EIO_READAHEAD;
940	req->fh = newSVsv (fh);	801	req->sv1 = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	802	req->int1 = fd;
942	req->offset = offset;	803	req->offs = offset;
943	req->length = length;	804	req->size = length;
944		805
945	send_req (req);	806	REQ_SEND;
946	}	807	}
947		808
948	void	809	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	810	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
950	SV * fh_or_path
951	SV * callback
952	ALIAS:	811	ALIAS:
953	aio_stat = REQ_STAT	812	aio_stat = EIO_STAT
954	aio_lstat = REQ_LSTAT	813	aio_lstat = EIO_LSTAT
955	CODE:	814	PPCODE:
956	{	815	{
957	dREQ;	816	dREQ;
958		817
959	New (0, req->statdata, 1, Stat_t);	818	req->sv1 = newSVsv (fh_or_path);
960	if (!req->statdata)
961	{
962	free_req (req);
963	croak ("out of memory during aio_req->statdata allocation");
964	}
965		819
966	if (SvPOK (fh_or_path))	820	if (SvPOK (req->sv1))
967	{	821	{
968	req->type = ix;	822	req->type = ix;
969	req->data = newSVsv (fh_or_path);
970	req->dataptr = SvPVbyte_nolen (req->data);	823	req->ptr1 = SvPVbyte_nolen (req->sv1);
971	}	824	}
972	else	825	else
973	{	826	{
974	req->type = REQ_FSTAT;	827	req->type = EIO_FSTAT;
975	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		829	}
		830
		831	REQ_SEND;
		832	}
		833
		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))
977	}	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	}
978		854
979	send_req (req);	855	REQ_SEND;
980	}	856	}
981		857
982	void	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
983	aio_unlink(pathname,callback=&PL_sv_undef)	949	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
984	SV * pathname
985	SV * callback
986	ALIAS:	950	ALIAS:
987	aio_unlink = REQ_UNLINK	951	aio_unlink = EIO_UNLINK
988	aio_rmdir = REQ_RMDIR	952	aio_rmdir = EIO_RMDIR
		953	aio_readdir = EIO_READDIR
989	CODE:	954	PPCODE:
990	{	955	{
991	dREQ;	956	dREQ;
992		957
993	req->type = ix;	958	req->type = ix;
994	req->data = newSVsv (pathname);	959	req->sv1 = newSVsv (pathname);
995	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;
996		974
997	send_req (req);	975	req->type = ix;
998	}	976	req->sv1 = newSVsv (oldpath);
999		977	req->ptr1 = SvPVbyte_nolen (req->sv1);
1000	void	978	req->sv2 = newSVsv (newpath);
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	979	req->ptr2 = SvPVbyte_nolen (req->sv2);
1002	SV * oldpath
1003	SV * newpath
1004	SV * callback
1005	CODE:
1006	{
1007	dREQ;
1008		980
1009	req->type = REQ_SYMLINK;	981	REQ_SEND;
1010	req->fh = newSVsv (oldpath);	982	}
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	983
1012	req->data = newSVsv (newpath);	984	void
1013	req->dataptr = SvPVbyte_nolen (req->data);	985	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		986	PPCODE:
		987	{
		988	dREQ;
1014		989
1015	send_req (req);	990	req->type = EIO_MKNOD;
1016	}	991	req->sv1 = newSVsv (pathname);
1017		992	req->ptr1 = SvPVbyte_nolen (req->sv1);
1018	void	993	req->int2 = (mode_t)mode;
1019	aio_readdir(pathname,callback=&PL_sv_undef)	994	req->offs = dev;
1020	SV * pathname
1021	SV * callback
1022	CODE:
1023	{
1024	dREQ;
1025		995
		996	REQ_SEND;
		997	}
		998
		999	void
		1000	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1001	PPCODE:
		1002	{
		1003	dREQ;
		1004
		1005	req->type = EIO_BUSY;
		1006	req->nv1 = delay < 0. ? 0. : delay;
		1007
		1008	REQ_SEND;
		1009	}
		1010
		1011	void
		1012	aio_group (SV *callback=&PL_sv_undef)
		1013	PROTOTYPE: ;$
		1014	PPCODE:
		1015	{
		1016	dREQ;
		1017
		1018	req->type = EIO_GROUP;
		1019
		1020	req_submit (req);
		1021	XPUSHs (req_sv (req, aio_grp_stash));
		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
1026	req->type = REQ_READDIR;	1033	req->type = ix;
1027	req->data = newSVsv (pathname);
1028	req->dataptr = SvPVbyte_nolen (req->data);
1029
1030	send_req (req);
1031	}
1032		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
1033	void	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;
		1059
		1060	void
1034	flush()	1061	flush ()
1035	PROTOTYPE:	1062	PROTOTYPE:
1036	CODE:	1063	CODE:
1037	while (nreqs)	1064	while (eio_nreqs ())
1038	{	1065	{
1039	poll_wait ();	1066	poll_wait ();
1040	poll_cb ();	1067	poll_cb ();
1041	}	1068	}
1042		1069
1043	void	1070	int
1044	poll()	1071	poll()
1045	PROTOTYPE:	1072	PROTOTYPE:
1046	CODE:	1073	CODE:
1047	if (nreqs)
1048	{
1049	poll_wait ();	1074	poll_wait ();
1050	poll_cb ();	1075	RETVAL = poll_cb ();
1051	}	1076	OUTPUT:
		1077	RETVAL
1052		1078
1053	int	1079	int
1054	poll_fileno()	1080	poll_fileno()
1055	PROTOTYPE:	1081	PROTOTYPE:
1056	CODE:	1082	CODE:
1057	RETVAL = respipe [0];	1083	RETVAL = s_epipe_fd (&respipe);
1058	OUTPUT:	1084	OUTPUT:
1059	RETVAL	1085	RETVAL
1060		1086
1061	int	1087	int
1062	poll_cb(...)	1088	poll_cb(...)
…		…
1068		1094
1069	void	1095	void
1070	poll_wait()	1096	poll_wait()
1071	PROTOTYPE:	1097	PROTOTYPE:
1072	CODE:	1098	CODE:
1073	if (nreqs)
1074	poll_wait ();	1099	poll_wait ();
1075		1100
1076	int	1101	int
1077	nreqs()	1102	nreqs()
1078	PROTOTYPE:	1103	PROTOTYPE:
1079	CODE:	1104	CODE:
1080	RETVAL = nreqs;	1105	RETVAL = eio_nreqs ();
1081	OUTPUT:	1106	OUTPUT:
1082	RETVAL	1107	RETVAL
1083		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	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1150	OUTPUT:
		1151	RETVAL
		1152
		1153	void _on_next_submit (SV *cb)
		1154	CODE:
		1155	SvREFCNT_dec (on_next_submit);
		1156	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1157
		1158	PROTOTYPES: DISABLE
		1159
		1160	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1161
		1162	void
		1163	cancel (aio_req_ornot req)
		1164	CODE:
		1165	eio_cancel (req);
		1166
		1167	void
		1168	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1169	PPCODE:
		1170	{
		1171	if (GIMME_V != G_VOID)
		1172	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1173
		1174	if (items > 1)
		1175	{
		1176	SV *cb_cv =get_cb (callback);
		1177
		1178	SvREFCNT_dec (req->callback);
		1179	req->callback = SvREFCNT_inc (cb_cv);
		1180	}
		1181	}
		1182
		1183	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1184
		1185	void
		1186	add (aio_req grp, ...)
		1187	PPCODE:
		1188	{
		1189	int i;
		1190
		1191	if (grp->int1 == 2)
		1192	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1193
		1194	for (i = 1; i < items; ++i )
		1195	{
		1196	aio_req req;
		1197
		1198	if (GIMME_V != G_VOID)
		1199	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1200
		1201	req = SvAIO_REQ (ST (i));
		1202
		1203	if (req)
		1204	eio_grp_add (grp, req);
		1205	}
		1206	}
		1207
		1208	void
		1209	cancel_subs (aio_req_ornot req)
		1210	CODE:
		1211	req_cancel_subs (req);
		1212
		1213	void
		1214	result (aio_req grp, ...)
		1215	CODE:
		1216	{
		1217	int i;
		1218	AV *av;
		1219
		1220	grp->errorno = errno;
		1221
		1222	av = newAV ();
		1223	av_extend (av, items - 1);
		1224
		1225	for (i = 1; i < items; ++i )
		1226	av_push (av, newSVsv (ST (i)));
		1227
		1228	SvREFCNT_dec (grp->sv1);
		1229	grp->sv1 = (SV *)av;
		1230	}
		1231
		1232	void
		1233	errno (aio_req grp, int errorno = errno)
		1234	CODE:
		1235	grp->errorno = errorno;
		1236
		1237	void
		1238	limit (aio_req grp, int limit)
		1239	CODE:
		1240	eio_grp_limit (grp, limit);
		1241
		1242	void
		1243	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1244	CODE:
		1245	{
		1246	SvREFCNT_dec (grp->sv2);
		1247	grp->sv2 = newSVsv (callback);
		1248	grp->feed = aio_grp_feed;
		1249
		1250	if (grp->int2 <= 0)
		1251	grp->int2 = 2;
		1252
		1253	eio_grp_limit (grp, grp->int2);
		1254	}
		1255

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