ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.147 by root, Mon Jun 15 05:34:49 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
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
13	#include <sys/types.h>	12	#include <sys/types.h>
14	#include <sys/stat.h>	13	#include <sys/stat.h>
15	#include <limits.h>	14	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	15	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	16	#include <sched.h>
20		17
21	#if HAVE_SENDFILE	18	/* perl namespace pollution */
22	# if __linux	19	#undef VERSION
23	# include <sys/sendfile.h>	20
24	# elif __freebsd	21	#ifdef _WIN32
25	# include <sys/socket.h>	22
26	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
27	# elif __hpux	24	# undef malloc
28	# include <sys/socket.h>	25	# undef free
29	# elif __solaris /* not yet */	26
30	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
31	# else	59	#else
32	# error sendfile support requested but not available	60
33	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
34	#endif	68	#endif
35		69
36	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
37	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
38	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
39	#endif	83	#endif
40		84
41	#if __ia64	85	/*****************************************************************************/
42	# define STACKSIZE 65536	86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
43	#else	89	#else
44	# define STACKSIZE 8192	90	# define expect(expr,value) (expr)
45	#endif	91	#endif
46		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	static HV *stash;
		99	typedef SV SV8; /* byte-sv, used for argument-checking */
		100
		101	#define AIO_REQ_KLASS "IO::AIO::REQ"
		102	#define AIO_GRP_KLASS "IO::AIO::GRP"
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/eio.h"
		113
		114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
		118
47	enum {	119	enum {
48	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
49	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
51	REQ_SENDFILE,
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR,
55	REQ_READDIR,
56	REQ_SYMLINK,
57	};	121	};
58		122
59	typedef struct aio_cb {	123	#include "libeio/eio.c"
60	struct aio_cb *volatile next;
61		124
62	int type;
63
64	/* should receive a cleanup, with unions */
65	int fd, fd2;
66	off_t offset;
67	size_t length;
68	ssize_t result;
69	mode_t mode; /* open */
70	int errorno;
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	STRLEN dataoffset;
75
76	Stat_t *statdata;
77	} aio_cb;
78
79	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
80		127
81	static int started, wanted;	128	static SV *on_next_submit;
82	static volatile int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
83	static int max_outstanding = 1<<30;	130	static int max_outstanding;
84	static int respipe [2];
85		131
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		133
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
91	static volatile aio_req ress, rese; /* queue start, queue end */
92
93	static void free_req (aio_req req)	135	static void req_cancel (aio_req req);
94	{
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
		150
		151	/* must be called at most once */
		152	static SV *req_sv (aio_req req, const char *klass)
		153	{
		154	if (!req->self)
		155	{
		156	req->self = (SV *)newHV ();
		157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		158	}
		159
		160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		161	}
		162
		163	static aio_req SvAIO_REQ (SV *sv)
		164	{
		165	MAGIC *mg;
		166
		167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		168	croak ("object of class " AIO_REQ_KLASS " expected");
		169
		170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		171
		172	return mg ? (aio_req)mg->mg_ptr : 0;
		173	}
		174
		175	static void aio_grp_feed (aio_req grp)
		176	{
		177	if (grp->sv2 && SvOK (grp->sv2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191	}
		192
		193	static void req_submit (eio_req *req)
		194	{
		195	eio_submit (req);
		196
		197	if (expect_false (on_next_submit))
		198	{
		199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
		207	}
		208	}
		209
		210	static int req_invoke (eio_req *req)
		211	{
		212	dSP;
		213
		214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
		218	{
		219	ENTER;
		220	SAVETMPS;
		221	PUSHMARK (SP);
		222	EXTEND (SP, 1);
		223
		224	switch (req->type)
		225	{
		226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
		229
		230	if (req->result >= 0)
		231	{
		232	int i;
		233	char *names = (char *)req->ptr2;
		234	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		235	AV *av = newAV ();
		236
		237	av_extend (av, req->result - 1);
		238
		239	for (i = 0; i < req->result; ++i)
		240	{
		241	if (req->int1 & EIO_READDIR_DENTS)
		242	{
		243	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		244
		245	if (req->int1 & EIO_READDIR_CUSTOM2)
		246	{
		247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		248	AV *avent = newAV ();
		249
		250	av_extend (avent, 2);
		251
		252	if (!sv_type [ent->type])
		253	{
		254	sv_type [ent->type] = newSViv (ent->type);
		255	SvREADONLY_on (sv_type [ent->type]);
		256	}
		257
		258	av_store (avent, 0, namesv);
		259	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		260	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
		265	av_store (av, i, namesv);
		266
		267	++ent;
		268	}
		269	else
		270	{
		271	SV *name = newSVpv (names, 0);
		272	av_store (av, i, name);
		273	names += SvCUR (name) + 1;
		274	}
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281
		282	if (req->int1 & EIO_READDIR_CUSTOM1)
		283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		284	}
		285	break;
		286
		287	case EIO_OPEN:
		288	{
		289	/* convert fd to fh */
		290	SV *fh = &PL_sv_undef;
		291
		292	if (req->result >= 0)
		293	{
		294	GV *gv = (GV *)sv_newmortal ();
		295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		296	char sym [64];
		297	int symlen;
		298
		299	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		300	gv_init (gv, stash, sym, symlen, 0);
		301
		302	symlen = snprintf (
		303	sym,
		304	sizeof (sym),
		305	"%s&=%d",
		306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		307	(int)req->result
		308	);
		309
		310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		311	fh = (SV *)gv;
		312	}
		313
		314	PUSHs (fh);
		315	}
		316	break;
		317
		318	case EIO_GROUP:
		319	req->int1 = 2; /* mark group as finished */
		320
		321	if (req->sv1)
		322	{
		323	int i;
		324	AV *av = (AV *)req->sv1;
		325
		326	EXTEND (SP, AvFILL (av) + 1);
		327	for (i = 0; i <= AvFILL (av); ++i)
		328	PUSHs (*av_fetch (av, i, 0));
		329	}
		330	break;
		331
		332	case EIO_NOP:
		333	case EIO_BUSY:
		334	break;
		335
		336	case EIO_READLINK:
		337	if (req->result > 0)
		338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		339	break;
		340
		341	case EIO_STAT:
		342	case EIO_LSTAT:
		343	case EIO_FSTAT:
		344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		345	PL_laststatval = req->result;
		346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		347	PUSHs (sv_2mortal (newSViv (req->result)));
		348	break;
		349
		350	case EIO_READ:
		351	{
		352	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		353	*SvEND (req->sv2) = 0;
		354	SvPOK_only (req->sv2);
		355	SvSETMAGIC (req->sv2);
		356	PUSHs (sv_2mortal (newSViv (req->result)));
		357	}
		358	break;
		359
		360	case EIO_DUP2:
		361	if (req->result > 0)
		362	req->result = 0;
		363	/* FALLTHROUGH */
		364
		365	default:
		366	PUSHs (sv_2mortal (newSViv (req->result)));
		367	break;
		368	}
		369
		370	errno = req->errorno;
		371
		372	PUTBACK;
		373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		374	SPAGAIN;
		375
		376	FREETMPS;
		377	LEAVE;
		378
		379	PUTBACK;
		380	}
		381
		382	return !!SvTRUE (ERRSV);
		383	}
		384
		385	static void req_destroy (aio_req req)
		386	{
98	if (req->fh)	387	if (req->self)
		388	{
		389	sv_unmagic (req->self, PERL_MAGIC_ext);
99	SvREFCNT_dec (req->fh);	390	SvREFCNT_dec (req->self);
		391	}
100		392
101	if (req->fh2)	393	SvREFCNT_dec (req->sv1);
102	SvREFCNT_dec (req->fh2);	394	SvREFCNT_dec (req->sv2);
103
104	if (req->statdata)
105	Safefree (req->statdata);
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
109
110	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);
112		396
113	Safefree (req);	397	Safefree (req);
114	}	398	}
115		399
		400	static void req_cancel_subs (aio_req grp)
		401	{
		402	aio_req sub;
		403
		404	if (grp->type != EIO_GROUP)
		405	return;
		406
		407	SvREFCNT_dec (grp->sv2);
		408	grp->sv2 = 0;
		409
		410	eio_grp_cancel (grp);
		411	}
		412
		413	#ifdef USE_SOCKETS_AS_HANDLES
		414	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		415	#else
		416	# define TO_SOCKET(x) (x)
		417	#endif
		418
116	static void	419	static void
117	poll_wait ()	420	create_respipe (void)
118	{	421	{
119	if (nreqs && !ress)	422	int old_readfd = respipe [0];
		423
		424	if (respipe [1] >= 0)
		425	respipe_close (TO_SOCKET (respipe [1]));
		426
		427	#ifdef _WIN32
		428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		429	#else
		430	if (pipe (respipe))
		431	#endif
		432	croak ("unable to initialize result pipe");
		433
		434	if (old_readfd >= 0)
120	{	435	{
121	fd_set rfd;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
122	FD_ZERO(&rfd);	437	croak ("unable to initialize result pipe(2)");
123	FD_SET(respipe [0], &rfd);
124		438
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	439	respipe_close (respipe [0]);
		440	respipe [0] = old_readfd;
126	}	441	}
127	}
128		442
129	static int	443	#ifdef _WIN32
130	poll_cb ()	444	int arg = 1;
131	{	445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
132	dSP;	446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
133	int count = 0;	447	#else
134	int do_croak = 0;	448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
135	aio_req req;	449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
136		452
		453	respipe_osf [0] = TO_SOCKET (respipe [0]);
		454	respipe_osf [1] = TO_SOCKET (respipe [1]);
		455	}
		456
		457	static void poll_wait (void)
		458	{
		459	fd_set rfd;
		460
		461	while (eio_nreqs ())
		462	{
		463	int size;
		464
		465	X_LOCK (reslock);
		466	size = res_queue.size;
		467	X_UNLOCK (reslock);
		468
		469	if (size)
		470	return;
		471
		472	etp_maybe_start_thread ();
		473
		474	FD_ZERO (&rfd);
		475	FD_SET (respipe [0], &rfd);
		476
		477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		478	}
		479	}
		480
		481	static int poll_cb (void)
		482	{
137	for (;;)	483	for (;;)
138	{	484	{
139	pthread_mutex_lock (&reslock);	485	int res = eio_poll ();
140	req = ress;
141		486
142	if (req)	487	if (res > 0)
143	{
144	ress = req->next;
145
146	if (!ress)
147	{
148	/* read any signals sent by the worker threads */
149	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)
151	;
152
153	rese = 0;
154	}
155	}
156
157	pthread_mutex_unlock (&reslock);
158
159	if (!req)
160	break;
161
162	nreqs--;
163
164	if (req->type == REQ_QUIT)
165	started--;
166	else
167	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173
174	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);
176
177	if (req->statdata)
178	{
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);
182	}
183
184	ENTER;
185	PUSHMARK (SP);
186
187	if (req->type == REQ_READDIR)
188	{
189	SV *rv = &PL_sv_undef;
190
191	if (req->result >= 0)
192	{
193	char *buf = req->data2ptr;
194	AV *av = newAV ();
195
196	while (req->result)
197	{
198	SV *sv = newSVpv (buf, 0);
199
200	av_push (av, sv);
201	buf += SvCUR (sv) + 1;
202	req->result--;
203	}
204
205	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}
207
208	XPUSHs (rv);
209	}
210	else
211	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)
215	{
216	/* convert fd to fh */
217	SV *fh;
218
219	PUTBACK;
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}
228	}
229
230	if (SvOK (req->callback))
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID | G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);	488	croak (0);
240	}
241	}
242		489
243	LEAVE;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
244		492
245	errno = errorno;	493	poll_wait ();
246	count++;
247	}
248
249	free_req (req);
250	}	494	}
251
252	return count;
253	}	495	}
254		496
255	static void *aio_proc(void *arg);	497	static void atfork_child (void)
256
257	static void
258	start_thread (void)
259	{	498	{
260	sigset_t fullsigset, oldsigset;	499	create_respipe ();
261	pthread_t tid;
262	pthread_attr_t attr;
263
264	pthread_attr_init (&attr);
265	pthread_attr_setstacksize (&attr, STACKSIZE);
266	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267
268	sigfillset (&fullsigset);
269	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270
271	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
272	started++;
273
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);
275	}	500	}
276		501
277	static void	502	static SV *
278	send_req (aio_req req)	503	get_cb (SV *cb_sv)
279	{	504	{
280	while (started < wanted && nreqs >= started)	505	HV *st;
281	start_thread ();	506	GV *gvp;
		507	CV *cv;
282		508
283	nreqs++;	509	if (!SvOK (cb_sv))
		510	return 0;
284		511
285	pthread_mutex_lock (&reqlock);	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
286		513
287	req->next = 0;	514	if (!cv)
		515	croak ("IO::AIO callback must be undef or a CODE reference");
288		516
289	if (reqe)	517	return (SV *)cv;
290	{
291	reqe->next = req;
292	reqe = req;
293	}
294	else
295	reqe = reqs = req;
296
297	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);
299
300	if (nreqs > max_outstanding)
301	for (;;)
302	{
303	poll_cb ();
304
305	if (nreqs <= max_outstanding)
306	break;
307
308	poll_wait ();
309	}
310	}	518	}
311		519
312	static void	520	#define dREQ \
313	end_thread (void)	521	SV *cb_cv; \
314	{
315	aio_req req;	522	aio_req req; \
		523	int req_pri = next_pri; \
		524	next_pri = EIO_PRI_DEFAULT; \
		525	\
		526	cb_cv = get_cb (callback); \
		527	\
316	Newz (0, req, 1, aio_cb);	528	Newz (0, req, 1, eio_req); \
317	req->type = REQ_QUIT;	529	if (!req) \
		530	croak ("out of memory during eio_req allocation"); \
		531	\
		532	req->callback = SvREFCNT_inc (cb_cv); \
		533	req->pri = req_pri
318		534
319	send_req (req);	535	#define REQ_SEND \
320	}	536	PUTBACK; \
		537	req_submit (req); \
		538	SPAGAIN; \
		539	\
		540	if (GIMME_V != G_VOID) \
		541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
321		542
322	static void min_parallel (int nthreads)
323	{
324	if (wanted < nthreads)
325	wanted = nthreads;
326	}
327
328	static void max_parallel (int nthreads)
329	{
330	int cur = started;
331
332	if (wanted > nthreads)
333	wanted = nthreads;
334
335	while (cur > wanted)
336	{
337	end_thread ();
338	cur--;
339	}
340
341	while (started > wanted)
342	{
343	poll_wait ();
344	poll_cb ();
345	}
346	}
347
348	static void create_pipe ()
349	{
350	if (pipe (respipe))
351	croak ("unable to initialize result pipe");
352
353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
354	croak ("cannot set result pipe to nonblocking mode");
355
356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
357	croak ("cannot set result pipe to nonblocking mode");
358	}
359
360	/*****************************************************************************/
361	/* work around various missing functions */
362
363	#if !HAVE_PREADWRITE
364	# define pread aio_pread
365	# define pwrite aio_pwrite
366
367	/*
368	* make our pread/pwrite safe against themselves, but not against
369	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.
371	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373
374	static ssize_t	543	static int
375	pread (int fd, void *buf, size_t count, off_t offset)	544	extract_fd (SV *fh, int wr)
376	{	545	{
377	ssize_t res;	546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
378	off_t ooffset;
379		547
380	pthread_mutex_lock (&preadwritelock);	548	if (fd < 0)
381	ooffset = lseek (fd, 0, SEEK_CUR);	549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
382	lseek (fd, offset, SEEK_SET);
383	res = read (fd, buf, count);
384	lseek (fd, ooffset, SEEK_SET);
385	pthread_mutex_unlock (&preadwritelock);
386		550
387	return res;	551	return fd;
388	}	552	}
389		553
390	static ssize_t	554	MODULE = IO::AIO PACKAGE = IO::AIO
391	pwrite (int fd, void *buf, size_t count, off_t offset)
392	{
393	ssize_t res;
394	off_t ooffset;
395		555
396	pthread_mutex_lock (&preadwritelock);	556	PROTOTYPES: ENABLE
397	ooffset = lseek (fd, 0, SEEK_CUR);
398	lseek (fd, offset, SEEK_SET);
399	res = write (fd, buf, count);
400	lseek (fd, offset, SEEK_SET);
401	pthread_mutex_unlock (&preadwritelock);
402		557
403	return res;	558	BOOT:
404	}	559	{
		560	static const struct {
		561	const char *name;
		562	IV iv;
		563	} *civ, const_iv[] = {
		564	# define const_iv(name, value) { # name, (IV) value },
		565	# define const_eio(name) { # name, (IV) EIO_ ## name },
		566	const_iv (EXDEV , EXDEV)
		567	const_iv (ENOSYS , ENOSYS)
		568	const_iv (O_RDONLY, O_RDONLY)
		569	const_iv (O_WRONLY, O_WRONLY)
		570	const_iv (O_CREAT , O_CREAT)
		571	const_iv (O_TRUNC , O_TRUNC)
		572	#ifndef _WIN32
		573	const_iv (S_IFIFO , S_IFIFO)
405	#endif	574	#endif
		575	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		576	const_eio (SYNC_FILE_RANGE_WRITE)
		577	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
406		578
407	#if !HAVE_FDATASYNC	579	const_eio (READDIR_DENTS)
408	# define fdatasync fsync	580	const_eio (READDIR_DIRS_FIRST)
409	#endif	581	const_eio (READDIR_STAT_ORDER)
		582	const_eio (READDIR_FOUND_UNKNOWN)
410		583
411	#if !HAVE_READAHEAD	584	const_eio (DT_UNKNOWN)
412	# define readahead aio_readahead	585	const_eio (DT_FIFO)
413		586	const_eio (DT_CHR)
414	static ssize_t	587	const_eio (DT_DIR)
415	readahead (int fd, off_t offset, size_t count)	588	const_eio (DT_BLK)
416	{	589	const_eio (DT_REG)
417	char readahead_buf[4096];	590	const_eio (DT_LNK)
418		591	const_eio (DT_SOCK)
419	while (count > 0)	592	const_eio (DT_WHT)
420	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
422
423	pread (fd, readahead_buf, len, offset);
424	offset += len;
425	count -= len;
426	}
427
428	errno = 0;
429	}
430	#endif
431
432	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r
434
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436
437	static int
438	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439	{
440	struct dirent *e;
441	int errorno;
442
443	pthread_mutex_lock (&readdirlock);
444
445	e = readdir (dirp);
446	errorno = errno;
447
448	if (e)
449	{
450	*res = ent;
451	strcpy (ent->d_name, e->d_name);
452	}
453	else
454	*res = 0;
455
456	pthread_mutex_unlock (&readdirlock);
457
458	errno = errorno;
459	return e ? 0 : -1;
460	}
461	#endif
462
463	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
466	{
467	ssize_t res;
468
469	if (!count)
470	return 0;
471
472	#if HAVE_SENDFILE
473	# if __linux
474	res = sendfile (ofd, ifd, &offset, count);
475
476	# elif __freebsd
477	/*
478	* Of course, the freebsd sendfile is a dire hack with no thoughts
479	* wasted on making it similar to other I/O functions.
480	*/
481	{
482	off_t sbytes;
483	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
484
485	if (res < 0 && sbytes)
486	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
487	res = sbytes;
488	}	593	};
489		594
490	# elif __hpux	595	stash = gv_stashpv ("IO::AIO", 1);
491	res = sendfile (ofd, ifd, offset, count, 0, 0);
492		596
493	# elif __solaris	597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
494	{	598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
495	struct sendfilevec vec;
496	size_t sbytes;
497		599
498	vec.sfv_fd = ifd;
499	vec.sfv_flag = 0;
500	vec.sfv_off = offset;
501	vec.sfv_len = count;
502
503	res = sendfilev (ofd, &vec, 1, &sbytes);
504
505	if (res < 0 && sbytes)
506	res = sbytes;
507	}
508
509	# endif
510	#else
511	res = -1;
512	errno = ENOSYS;
513	#endif
514
515	if (res < 0
516	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
517	#if __solaris
518	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
519	#endif
520	)
521	)
522	{
523	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];
525	res = 0;
526
527	while (count)
528	{
529	ssize_t cnt;
530
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
532
533	if (cnt <= 0)
534	{
535	if (cnt && !res) res = -1;
536	break;
537	}
538
539	cnt = write (ofd, buf, cnt);
540
541	if (cnt <= 0)
542	{
543	if (cnt && !res) res = -1;
544	break;
545	}
546
547	offset += cnt;
548	res += cnt;
549	count -= cnt;
550	}
551	}
552
553	return res;
554	}
555
556	/* read a full directory */
557	static int
558	scandir_ (const char *path, void **namesp)
559	{
560	DIR *dirp = opendir (path);
561	union
562	{
563	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;
566	struct dirent *entp;
567	char *name, *names;
568	int memlen = 4096;
569	int memofs = 0;
570	int res = 0;
571	int errorno;
572
573	if (!dirp)
574	return -1;
575
576	names = malloc (memlen);
577
578	for (;;)
579	{
580	errno = 0, readdir_r (dirp, &u.d, &entp);
581
582	if (!entp)
583	break;
584
585	name = entp->d_name;
586
587	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588	{
589	int len = strlen (name) + 1;
590
591	res++;
592
593	while (memofs + len > memlen)
594	{
595	memlen *= 2;
596	names = realloc (names, memlen);
597	if (!names)
598	break;
599	}
600
601	memcpy (names + memofs, name, len);
602	memofs += len;
603	}
604	}
605
606	errorno = errno;
607	closedir (dirp);
608
609	if (errorno)
610	{
611	free (names);
612	errno = errorno;
613	res = -1;
614	}
615
616	*namesp = (void *)names;
617	return res;
618	}
619
620	/*****************************************************************************/
621
622	static void *
623	aio_proc (void *thr_arg)
624	{
625	aio_req req;
626	int type;
627
628	do
629	{
630	pthread_mutex_lock (&reqlock);
631
632	for (;;)
633	{
634	req = reqs;
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641
642	if (req)
643	break;
644
645	pthread_cond_wait (&reqwait, &reqlock);
646	}
647
648	pthread_mutex_unlock (&reqlock);
649
650	errno = 0; /* strictly unnecessary */
651
652	type = req->type;
653
654	switch (type)
655	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
661
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
671
672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
673	case REQ_FSYNC: req->result = fsync (req->fd); break;
674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
675
676	case REQ_QUIT:
677	break;
678
679	default:
680	req->result = ENOSYS;
681	break;
682	}
683
684	req->errorno = errno;
685
686	pthread_mutex_lock (&reslock);
687
688	req->next = 0;
689
690	if (rese)
691	{
692	rese->next = req;
693	rese = req;
694	}
695	else
696	{
697	rese = ress = req;
698
699	/* write a dummy byte to the pipe so fh becomes ready */
700	write (respipe [1], &respipe, 1);
701	}
702
703	pthread_mutex_unlock (&reslock);
704	}
705	while (type != REQ_QUIT);
706
707	return 0;
708	}
709
710	/*****************************************************************************/
711
712	static void atfork_prepare (void)
713	{
714	pthread_mutex_lock (&reqlock);
715	pthread_mutex_lock (&reslock);
716	#if !HAVE_PREADWRITE
717	pthread_mutex_lock (&preadwritelock);
718	#endif
719	#if !HAVE_READDIR_R
720	pthread_mutex_lock (&readdirlock);
721	#endif
722	}
723
724	static void atfork_parent (void)
725	{
726	#if !HAVE_READDIR_R
727	pthread_mutex_unlock (&readdirlock);
728	#endif
729	#if !HAVE_PREADWRITE
730	pthread_mutex_unlock (&preadwritelock);
731	#endif
732	pthread_mutex_unlock (&reslock);
733	pthread_mutex_unlock (&reqlock);
734	}
735
736	static void atfork_child (void)
737	{
738	aio_req prv;
739
740	started = 0;
741
742	while (reqs)
743	{
744	prv = reqs;
745	reqs = prv->next;
746	free_req (prv);
747	}
748
749	reqs = reqe = 0;
750
751	while (ress)
752	{
753	prv = ress;
754	ress = prv->next;
755	free_req (prv);
756	}
757
758	ress = rese = 0;
759
760	close (respipe [0]);
761	close (respipe [1]);
762	create_pipe ();	600	create_respipe ();
763		601
764	atfork_parent ();	602	if (eio_init (want_poll, done_poll) < 0)
765	}	603	croak ("IO::AIO: unable to initialise eio library");
766		604
767	#define dREQ \	605	/* atfork child called in fifo order, so before eio's handler */
768	aio_req req; \	606	X_THREAD_ATFORK (0, 0, atfork_child);
769	\
770	if (SvOK (callback) && !SvROK (callback)) \
771	croak ("clalback must be undef or of reference type"); \
772	\
773	Newz (0, req, 1, aio_cb); \
774	if (!req) \
775	croak ("out of memory during aio_req allocation"); \
776	\
777	req->callback = newSVsv (callback);
778
779	MODULE = IO::AIO PACKAGE = IO::AIO
780
781	PROTOTYPES: ENABLE
782
783	BOOT:
784	{
785	create_pipe ();
786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
787	}	607	}
788		608
789	void	609	void
790	min_parallel(nthreads)	610	max_poll_reqs (int nreqs)
791	int nthreads
792	PROTOTYPE: $	611	PROTOTYPE: $
		612	CODE:
		613	eio_set_max_poll_reqs (nreqs);
793		614
794	void	615	void
795	max_parallel(nthreads)	616	max_poll_time (double nseconds)
796	int nthreads
797	PROTOTYPE: $	617	PROTOTYPE: $
798
799	int
800	max_outstanding(nreqs)
801	int nreqs
802	PROTOTYPE: $
803	CODE:	618	CODE:
804	RETVAL = max_outstanding;	619	eio_set_max_poll_time (nseconds);
		620
		621	void
		622	min_parallel (int nthreads)
		623	PROTOTYPE: $
		624	CODE:
		625	eio_set_min_parallel (nthreads);
		626
		627	void
		628	max_parallel (int nthreads)
		629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_parallel (nthreads);
		632
		633	void
		634	max_idle (int nthreads)
		635	PROTOTYPE: $
		636	CODE:
		637	eio_set_max_idle (nthreads);
		638
		639	void
		640	max_outstanding (int maxreqs)
		641	PROTOTYPE: $
		642	CODE:
805	max_outstanding = nreqs;	643	max_outstanding = maxreqs;
806		644
807	void	645	void
808	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
809	SV * pathname
810	int flags
811	int mode
812	SV * callback
813	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
814	CODE:	648	PPCODE:
815	{	649	{
816	dREQ;	650	dREQ;
817		651
818	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
819	req->data = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
820	req->dataptr = SvPVbyte_nolen (req->data);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
821	req->fd = flags;	655	req->int1 = flags;
822	req->mode = mode;	656	req->int2 = mode;
823		657
824	send_req (req);	658	REQ_SEND;
825	}	659	}
826		660
827	void	661	void
828	aio_close(fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
829	SV * fh
830	SV * callback
831	PROTOTYPE: $;$	663	PROTOTYPE: $;$
832	ALIAS:	664	ALIAS:
833	aio_close = REQ_CLOSE
834	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
835	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
836	CODE:	667	PPCODE:
837	{	668	{
		669	int fd = extract_fd (fh, 0);
838	dREQ;	670	dREQ;
839		671
840	req->type = ix;	672	req->type = ix;
841	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
843		675
844	send_req (req);	676	REQ_SEND (req);
845	}	677	}
846		678
847	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
849	SV * fh
850	UV offset
851	UV length
852	SV * data
853	UV dataoffset
854	SV * callback
855	ALIAS:	728	ALIAS:
856	aio_read = REQ_READ	729	aio_read = EIO_READ
857	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
858	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
859	CODE:	732	PPCODE:
860	{	733	{
861	aio_req req;
862	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
863	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
864		737	UV len = SvUV (length);
865	SvUPGRADE (data, SVt_PV);
866	SvPOK_on (data);
867		738
868	if (dataoffset < 0)	739	if (dataoffset < 0)
869	dataoffset += svlen;	740	dataoffset += svlen;
870		741
871	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
872	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
873		744
874	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
875	{	746	{
876	/* write: check length and adjust. */	747	/* write: check length and adjust. */
877	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
878	length = svlen - dataoffset;	749	len = svlen - dataoffset;
879	}	750	}
880	else	751	else
881	{	752	{
882	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
883	svptr = SvGROW (data, length + dataoffset);	755	svptr = SvGROW (data, len + dataoffset + 1);
884	}	756	}
885
886	if (length < 0)
887	croak ("length must not be negative");
888		757
889	{	758	{
890	dREQ;	759	dREQ;
891		760
892	req->type = ix;	761	req->type = ix;
893	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
894	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
895	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
896	req->offset = offset;	765	req->size = len;
897	req->length = length;
898	req->data = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
899	req->dataptr = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
900		769
901	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
902	{	771	{
903	SvREADONLY_on (data);	772	SvREADONLY_on (data);
904	req->data2ptr = (void *)data;	773	req->flags |= FLAG_SV2_RO_OFF;
905	}	774	}
906		775
907	send_req (req);	776	REQ_SEND;
908	}	777	}
909	}	778	}
910		779
911	void	780	void
		781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		782	PROTOTYPE: $$;$
		783	PPCODE:
		784	{
		785	SV *data;
		786	dREQ;
		787
		788	req->type = EIO_READLINK;
		789	req->sv1 = newSVsv (path);
		790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		791
		792	REQ_SEND;
		793	}
		794
		795	void
912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
913	SV * out_fh
914	SV * in_fh
915	UV in_offset
916	UV length
917	SV * callback
918	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
919	CODE:	798	PPCODE:
920	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
921	dREQ;	802	dREQ;
922		803
923	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
924	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
926	req->fh2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
928	req->offset = in_offset;	809	req->offs = SvVAL64 (in_offset);
929	req->length = length;	810	req->size = length;
930		811
931	send_req (req);	812	REQ_SEND;
932	}	813	}
933		814
934	void	815	void
935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
936	SV * fh
937	UV offset
938	IV length
939	SV * callback
940	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
941	CODE:	818	PPCODE:
942	{	819	{
		820	int fd = extract_fd (fh, 0);
943	dREQ;	821	dREQ;
944		822
945	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
946	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
948	req->offset = offset;	826	req->offs = SvVAL64 (offset);
949	req->length = length;	827	req->size = length;
950		828
951	send_req (req);	829	REQ_SEND;
952	}	830	}
953		831
954	void	832	void
955	aio_stat(fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
956	SV * fh_or_path
957	SV * callback
958	ALIAS:	834	ALIAS:
959	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
960	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
961	CODE:	837	PPCODE:
962	{	838	{
963	dREQ;	839	dREQ;
964		840
965	New (0, req->statdata, 1, Stat_t);	841	req->sv1 = newSVsv (fh_or_path);
966	if (!req->statdata)
967	{
968	free_req (req);
969	croak ("out of memory during aio_req->statdata allocation");
970	}
971		842
972	if (SvPOK (fh_or_path))	843	if (SvPOK (req->sv1))
973	{	844	{
974	req->type = ix;	845	req->type = ix;
975	req->data = newSVsv (fh_or_path);
976	req->dataptr = SvPVbyte_nolen (req->data);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
977	}	847	}
978	else	848	else
979	{	849	{
980	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
981	req->fh = newSVsv (fh_or_path);
982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		852	}
		853
		854	REQ_SEND;
		855	}
		856
		857	void
		858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
		863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		865	req->sv1 = newSVsv (fh_or_path);
		866
		867	if (SvPOK (req->sv1))
983	}	868	{
		869	req->type = EIO_UTIME;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FUTIME;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
984		877
985	send_req (req);	878	REQ_SEND;
986	}	879	}
987		880
988	void	881	void
		882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->sv1 = newSVsv (fh_or_path);
		888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = EIO_TRUNCATE;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FTRUNCATE;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_chmod = EIO_CHMOD
		908	aio_mkdir = EIO_MKDIR
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = mode;
		914	req->sv1 = newSVsv (fh_or_path);
		915
		916	if (SvPOK (req->sv1))
		917	{
		918	req->type = ix;
		919	req->ptr1 = SvPVbyte_nolen (req->sv1);
		920	}
		921	else
		922	{
		923	req->type = EIO_FCHMOD;
		924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		925	}
		926
		927	REQ_SEND;
		928	}
		929
		930	void
		931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		932	PPCODE:
		933	{
		934	dREQ;
		935
		936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		938	req->sv1 = newSVsv (fh_or_path);
		939
		940	if (SvPOK (req->sv1))
		941	{
		942	req->type = EIO_CHOWN;
		943	req->ptr1 = SvPVbyte_nolen (req->sv1);
		944	}
		945	else
		946	{
		947	req->type = EIO_FCHOWN;
		948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		949	}
		950
		951	REQ_SEND;
		952	}
		953
		954	void
		955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		956	PPCODE:
		957	{
		958	dREQ;
		959
		960	req->type = EIO_READDIR;
		961	req->sv1 = newSVsv (pathname);
		962	req->ptr1 = SvPVbyte_nolen (req->sv1);
		963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		964
		965	if (flags & EIO_READDIR_DENTS)
		966	req->int1 |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
989	aio_unlink(pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
990	SV * pathname
991	SV * callback
992	ALIAS:	973	ALIAS:
993	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
994	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
		976	aio_readdir = EIO_READDIR
995	CODE:	977	PPCODE:
996	{	978	{
997	dREQ;	979	dREQ;
998		980
999	req->type = ix;	981	req->type = ix;
1000	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1001	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984
		985	REQ_SEND;
		986	}
		987
		988	void
		989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		990	ALIAS:
		991	aio_link = EIO_LINK
		992	aio_symlink = EIO_SYMLINK
		993	aio_rename = EIO_RENAME
		994	PPCODE:
		995	{
		996	dREQ;
1002		997
1003	send_req (req);	998	req->type = ix;
1004	}	999	req->sv1 = newSVsv (oldpath);
1005		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
1006	void	1001	req->sv2 = newSVsv (newpath);
1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
1008	SV * oldpath
1009	SV * newpath
1010	SV * callback
1011	CODE:
1012	{
1013	dREQ;
1014		1003
1015	req->type = REQ_SYMLINK;	1004	REQ_SEND;
1016	req->fh = newSVsv (oldpath);	1005	}
1017	req->data2ptr = SvPVbyte_nolen (req->fh);	1006
1018	req->data = newSVsv (newpath);	1007	void
1019	req->dataptr = SvPVbyte_nolen (req->data);	1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1009	PPCODE:
		1010	{
		1011	dREQ;
1020		1012
1021	send_req (req);	1013	req->type = EIO_MKNOD;
1022	}	1014	req->sv1 = newSVsv (pathname);
1023		1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1024	void	1016	req->int2 = (mode_t)mode;
1025	aio_readdir(pathname,callback=&PL_sv_undef)	1017	req->offs = dev;
1026	SV * pathname
1027	SV * callback
1028	CODE:
1029	{
1030	dREQ;
1031		1018
		1019	REQ_SEND;
		1020	}
		1021
		1022	void
		1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1024	PPCODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = EIO_BUSY;
		1029	req->nv1 = delay < 0. ? 0. : delay;
		1030
		1031	REQ_SEND;
		1032	}
		1033
		1034	void
		1035	aio_group (SV *callback=&PL_sv_undef)
		1036	PROTOTYPE: ;$
		1037	PPCODE:
		1038	{
		1039	dREQ;
		1040
		1041	req->type = EIO_GROUP;
		1042
		1043	req_submit (req);
		1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1045	}
		1046
		1047	void
		1048	aio_nop (SV *callback=&PL_sv_undef)
		1049	ALIAS:
		1050	aio_nop = EIO_NOP
		1051	aio_sync = EIO_SYNC
		1052	PPCODE:
		1053	{
		1054	dREQ;
		1055
1032	req->type = REQ_READDIR;	1056	req->type = ix;
1033	req->data = newSVsv (pathname);
1034	req->dataptr = SvPVbyte_nolen (req->data);
1035
1036	send_req (req);
1037	}
1038		1057
		1058	REQ_SEND;
		1059	}
		1060
		1061	int
		1062	aioreq_pri (int pri = 0)
		1063	PROTOTYPE: ;$
		1064	CODE:
		1065	RETVAL = next_pri;
		1066	if (items > 0)
		1067	{
		1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1069	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1070	next_pri = pri;
		1071	}
		1072	OUTPUT:
		1073	RETVAL
		1074
1039	void	1075	void
		1076	aioreq_nice (int nice = 0)
		1077	CODE:
		1078	nice = next_pri - nice;
		1079	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1081	next_pri = nice;
		1082
		1083	void
1040	flush()	1084	flush ()
1041	PROTOTYPE:	1085	PROTOTYPE:
1042	CODE:	1086	CODE:
1043	while (nreqs)	1087	while (eio_nreqs ())
1044	{	1088	{
1045	poll_wait ();	1089	poll_wait ();
1046	poll_cb ();	1090	poll_cb ();
1047	}	1091	}
1048		1092
1049	void	1093	int
1050	poll()	1094	poll()
1051	PROTOTYPE:	1095	PROTOTYPE:
1052	CODE:	1096	CODE:
1053	if (nreqs)
1054	{
1055	poll_wait ();	1097	poll_wait ();
1056	poll_cb ();	1098	RETVAL = poll_cb ();
1057	}	1099	OUTPUT:
		1100	RETVAL
1058		1101
1059	int	1102	int
1060	poll_fileno()	1103	poll_fileno()
1061	PROTOTYPE:	1104	PROTOTYPE:
1062	CODE:	1105	CODE:
…		…
1074		1117
1075	void	1118	void
1076	poll_wait()	1119	poll_wait()
1077	PROTOTYPE:	1120	PROTOTYPE:
1078	CODE:	1121	CODE:
1079	if (nreqs)
1080	poll_wait ();	1122	poll_wait ();
1081		1123
1082	int	1124	int
1083	nreqs()	1125	nreqs()
1084	PROTOTYPE:	1126	PROTOTYPE:
1085	CODE:	1127	CODE:
1086	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1087	OUTPUT:	1129	OUTPUT:
1088	RETVAL	1130	RETVAL
1089		1131
		1132	int
		1133	nready()
		1134	PROTOTYPE:
		1135	CODE:
		1136	RETVAL = eio_nready ();
		1137	OUTPUT:
		1138	RETVAL
		1139
		1140	int
		1141	npending()
		1142	PROTOTYPE:
		1143	CODE:
		1144	RETVAL = eio_npending ();
		1145	OUTPUT:
		1146	RETVAL
		1147
		1148	int
		1149	nthreads()
		1150	PROTOTYPE:
		1151	CODE:
		1152	RETVAL = eio_nthreads ();
		1153	OUTPUT:
		1154	RETVAL
		1155
		1156	void _on_next_submit (SV *cb)
		1157	CODE:
		1158	SvREFCNT_dec (on_next_submit);
		1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1160
		1161	PROTOTYPES: DISABLE
		1162
		1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1164
		1165	void
		1166	cancel (aio_req_ornot req)
		1167	CODE:
		1168	eio_cancel (req);
		1169
		1170	void
		1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1172	PPCODE:
		1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1176
		1177	if (items > 1)
		1178	{
		1179	SV *cb_cv = get_cb (callback);
		1180
		1181	SvREFCNT_dec (req->callback);
		1182	req->callback = SvREFCNT_inc (cb_cv);
		1183	}
		1184	}
		1185
		1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1187
		1188	void
		1189	add (aio_req grp, ...)
		1190	PPCODE:
		1191	{
		1192	int i;
		1193
		1194	if (grp->int1 == 2)
		1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1196
		1197	for (i = 1; i < items; ++i )
		1198	{
		1199	aio_req req;
		1200
		1201	if (GIMME_V != G_VOID)
		1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1203
		1204	req = SvAIO_REQ (ST (i));
		1205
		1206	if (req)
		1207	eio_grp_add (grp, req);
		1208	}
		1209	}
		1210
		1211	void
		1212	cancel_subs (aio_req_ornot req)
		1213	CODE:
		1214	req_cancel_subs (req);
		1215
		1216	void
		1217	result (aio_req grp, ...)
		1218	CODE:
		1219	{
		1220	int i;
		1221	AV *av;
		1222
		1223	grp->errorno = errno;
		1224
		1225	av = newAV ();
		1226	av_extend (av, items - 1);
		1227
		1228	for (i = 1; i < items; ++i )
		1229	av_push (av, newSVsv (ST (i)));
		1230
		1231	SvREFCNT_dec (grp->sv1);
		1232	grp->sv1 = (SV *)av;
		1233	}
		1234
		1235	void
		1236	errno (aio_req grp, int errorno = errno)
		1237	CODE:
		1238	grp->errorno = errorno;
		1239
		1240	void
		1241	limit (aio_req grp, int limit)
		1242	CODE:
		1243	eio_grp_limit (grp, limit);
		1244
		1245	void
		1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1247	CODE:
		1248	{
		1249	SvREFCNT_dec (grp->sv2);
		1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
		1252
		1253	if (grp->int2 <= 0)
		1254	grp->int2 = 2;
		1255
		1256	eio_grp_limit (grp, grp->int2);
		1257	}
		1258

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines