ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.43 by root, Sat Oct 21 23:06:04 2006 UTC vs.
Revision 1.141 by root, Sat Jun 6 17:25:13 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>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/types.h>	12	#include <sys/types.h>
15	#include <sys/stat.h>	13	#include <sys/stat.h>
16	#include <limits.h>	14	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	15	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	16	#include <sched.h>
21		17
22	#if HAVE_SENDFILE	18	/* perl namespace pollution */
23	# if __linux	19	#undef VERSION
24	# include <sys/sendfile.h>	20
25	# elif __freebsd	21	#ifdef _WIN32
26	# include <sys/socket.h>	22
27	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
28	# elif __hpux	24	# undef malloc
29	# include <sys/socket.h>	25	# undef free
30	# elif __solaris /* not yet */	26
31	# 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
32	# else	59	#else
33	# error sendfile support requested but not available	60
34	# 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
35	#endif	68	#endif
36		69
37	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
38	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
39	# 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
40	#endif	83	#endif
41		84
42	#if __ia64	85	/*****************************************************************************/
43	# define STACKSIZE 65536	86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
44	#else	89	#else
45	# define STACKSIZE 8192	90	# define expect(expr,value) (expr)
46	#endif	91	#endif
47		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
48	enum {	119	enum {
49	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	};	121	};
59		122
60	#define AIO_CB_KLASS "IO::AIO::CB"	123	#include "libeio/eio.c"
61		124
62	typedef struct aio_cb
63	{
64	struct aio_cb *grp_prev, *grp_next;
65	struct aio_grp *grp;
66
67	struct aio_cb *volatile next;
68
69	SV *self; /* the perl counterpart of this request, if any */
70
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	int type;
80	int fd, fd2;
81	int errorno;
82	STRLEN dataoffset;
83	mode_t mode; /* open */
84	unsigned char cancelled;
85	} aio_cb;
86
87	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
88	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
89		127
90	static int started, wanted;	128	static SV *on_next_submit;
91	static volatile int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
92	static int max_outstanding = 1<<30;	130	static int max_outstanding;
93	static int respipe [2];
94		131
95	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
96	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
97	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
98		133
99	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
100	static volatile aio_req ress, rese; /* queue start, queue end */	135	static void req_cancel (aio_req req);
101		136
102	typedef struct aio_grp	137	static void want_poll (void)
103	{	138	{
104	struct aio_cb *first, *last;	139	/* write a dummy byte to the pipe so fh becomes ready */
105	SV *callback;	140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
106	int busycount;
107	} aio_grp;
108
109	static void aio_grp_begin (aio_grp *grp)
110	{
111	++grp->busycount;
112	}	141	}
113		142
114	static void aio_grp_end (aio_grp *grp)	143	static void done_poll (void)
115	{	144	{
116	--grp->busycount;	145	/* read any signals sent by the worker threads */
117		146	char buf [4];
118	if (grp->busycount)	147	while (respipe_read (respipe [0], buf, 4) == 4)
119	return;	148	;
120
121	SvREFCNT_dec (grp->callback);
122	grp->callback = 0;
123	}
124
125	static aio_grp *aio_grp_new ()
126	{
127	aio_grp *grp;
128
129	Newz (0, grp, 1, aio_grp);
130	aio_grp_begin (grp);
131
132	return grp;
133	}	149	}
134		150
135	/* must be called at most once */	151	/* must be called at most once */
136	static SV *req_sv (aio_req req)	152	static SV *req_sv (aio_req req, const char *klass)
137	{	153	{
		154	if (!req->self)
		155	{
138	req->self = (SV *)newHV ();	156	req->self = (SV *)newHV ();
139	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		158	}
140		159
141	return sv_bless (newRV_noinc (req->self), gv_stashpv (AIO_CB_KLASS, 1));	160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
142	}	161	}
143		162
144	static aio_req SvAIO_REQ (SV *sv)	163	static aio_req SvAIO_REQ (SV *sv)
145	{	164	{
		165	MAGIC *mg;
		166
146	if (!sv_derived_from (sv, AIO_CB_KLASS) || !SvROK (sv))	167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
147	croak ("object of class " AIO_CB_KLASS " expected");	168	croak ("object of class " AIO_REQ_KLASS " expected");
148		169
149	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
150		171
151	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
152	}	173	}
153		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 *buf = req->ptr2;
		234	AV *av = newAV ();
		235
		236	av_extend (av, req->result - 1);
		237
		238	for (i = 0; i < req->result; ++i)
		239	{
		240	if (req->int1 & EIO_READDIR_DENTS)
		241	{
		242	eio_dirent *ent = (eio_dirent *)buf;
		243	SV *namesv = newSVpvn (ent->name, 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, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		260	av_store (avent, 2, SvREFCNT_inc (sv_type [ent->type]));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
		265	av_store (av, i, namesv);
		266
		267	buf += sizeof (eio_dirent);
		268	}
		269	else
		270	{
		271	SV *name = newSVpv (buf, 0);
		272	av_store (av, i, name);
		273	buf += 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", 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	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
154	static void req_free (aio_req req)	385	static void req_destroy (aio_req req)
155	{	386	{
156	if (req->self)	387	if (req->self)
157	{	388	{
158	sv_unmagic (req->self, PERL_MAGIC_ext);	389	sv_unmagic (req->self, PERL_MAGIC_ext);
159	SvREFCNT_dec (req->self);	390	SvREFCNT_dec (req->self);
160	}	391	}
161		392
162	if (req->data)
163	SvREFCNT_dec (req->data);
164
165	if (req->fh)
166	SvREFCNT_dec (req->fh);	393	SvREFCNT_dec (req->sv1);
167
168	if (req->fh2)
169	SvREFCNT_dec (req->fh2);	394	SvREFCNT_dec (req->sv2);
170
171	if (req->statdata)
172	Safefree (req->statdata);
173
174	if (req->callback)
175	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
176
177	if (req->type == REQ_READDIR && req->result >= 0)
178	free (req->data2ptr);
179		396
180	Safefree (req);	397	Safefree (req);
181	}	398	}
182		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
183	static void	419	static void
184	poll_wait ()	420	create_respipe (void)
185	{	421	{
186	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)
187	{	435	{
188	fd_set rfd;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
189	FD_ZERO(&rfd);	437	croak ("unable to initialize result pipe(2)");
190	FD_SET(respipe [0], &rfd);
191		438
192	select (respipe [0] + 1, &rfd, 0, 0, 0);	439	respipe_close (respipe [0]);
		440	respipe [0] = old_readfd;
193	}	441	}
194	}
195		442
196	static int	443	#ifdef _WIN32
197	poll_cb ()	444	int arg = 1;
198	{	445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
199	dSP;	446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
200	int count = 0;	447	#else
201	int do_croak = 0;	448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
202	aio_req req;	449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
203		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	{
204	for (;;)	483	for (;;)
205	{	484	{
206	pthread_mutex_lock (&reslock);	485	int res = eio_poll ();
207	req = ress;
208		486
209	if (req)	487	if (res > 0)
210	{
211	ress = req->next;
212
213	if (!ress)
214	{
215	/* read any signals sent by the worker threads */
216	char buf [32];
217	while (read (respipe [0], buf, 32) == 32)
218	;
219
220	rese = 0;
221	}
222	}
223
224	pthread_mutex_unlock (&reslock);
225
226	if (!req)
227	break;
228
229	nreqs--;
230
231	if (req->type == REQ_QUIT)
232	started--;
233	else
234	{
235	int errorno = errno;
236	errno = req->errorno;
237
238	if (req->type == REQ_READ)
239	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
240
241	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
242	SvREADONLY_off (req->data);
243
244	if (req->statdata)
245	{
246	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
247	PL_laststatval = req->result;
248	PL_statcache = *(req->statdata);
249	}
250
251	ENTER;
252	PUSHMARK (SP);
253
254	if (req->type == REQ_READDIR)
255	{
256	SV *rv = &PL_sv_undef;
257
258	if (req->result >= 0)
259	{
260	char *buf = req->data2ptr;
261	AV *av = newAV ();
262
263	while (req->result)
264	{
265	SV *sv = newSVpv (buf, 0);
266
267	av_push (av, sv);
268	buf += SvCUR (sv) + 1;
269	req->result--;
270	}
271
272	rv = sv_2mortal (newRV_noinc ((SV *)av));
273	}
274
275	XPUSHs (rv);
276	}
277	else
278	{
279	XPUSHs (sv_2mortal (newSViv (req->result)));
280
281	if (req->type == REQ_OPEN)
282	{
283	/* convert fd to fh */
284	SV *fh;
285
286	PUTBACK;
287	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
288	SPAGAIN;
289
290	fh = SvREFCNT_inc (POPs);
291
292	PUSHMARK (SP);
293	XPUSHs (sv_2mortal (fh));
294	}
295	}
296
297	if (SvOK (req->callback) && !req->cancelled)
298	{
299	PUTBACK;
300	call_sv (req->callback, G_VOID | G_EVAL);
301	SPAGAIN;
302
303	if (SvTRUE (ERRSV))
304	{
305	req_free (req);
306	croak (0);	488	croak (0);
307	}
308	}
309		489
310	LEAVE;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
311		492
312	errno = errorno;	493	poll_wait ();
313	count++;
314	}
315
316	req_free (req);
317	}	494	}
318
319	return count;
320	}	495	}
321		496
322	static void *aio_proc(void *arg);	497	static void atfork_child (void)
323
324	static void
325	start_thread (void)
326	{	498	{
327	sigset_t fullsigset, oldsigset;	499	create_respipe ();
328	pthread_t tid;
329	pthread_attr_t attr;
330
331	pthread_attr_init (&attr);
332	pthread_attr_setstacksize (&attr, STACKSIZE);
333	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
334
335	sigfillset (&fullsigset);
336	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
337
338	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
339	started++;
340
341	sigprocmask (SIG_SETMASK, &oldsigset, 0);
342	}	500	}
343		501
344	static void	502	static SV *
345	req_send (aio_req req)	503	get_cb (SV *cb_sv)
346	{	504	{
347	while (started < wanted && nreqs >= started)	505	HV *st;
348	start_thread ();	506	GV *gvp;
		507	CV *cv;
349		508
350	nreqs++;	509	if (!SvOK (cb_sv))
351
352	pthread_mutex_lock (&reqlock);
353
354	req->next = 0;
355
356	if (reqe)
357	{
358	reqe->next = req;
359	reqe = req;
360	}
361	else
362	reqe = reqs = req;
363
364	pthread_cond_signal (&reqwait);
365	pthread_mutex_unlock (&reqlock);
366
367	if (nreqs > max_outstanding)
368	for (;;)
369	{
370	poll_cb ();
371
372	if (nreqs <= max_outstanding)
373	break;
374
375	poll_wait ();
376	}
377	}
378
379	static void
380	end_thread (void)
381	{
382	aio_req req;
383	Newz (0, req, 1, aio_cb);
384	req->type = REQ_QUIT;
385
386	req_send (req);
387	}
388
389	static void min_parallel (int nthreads)
390	{
391	if (wanted < nthreads)
392	wanted = nthreads;
393	}
394
395	static void max_parallel (int nthreads)
396	{
397	int cur = started;
398
399	if (wanted > nthreads)
400	wanted = nthreads;
401
402	while (cur > wanted)
403	{
404	end_thread ();
405	cur--;
406	}
407
408	while (started > wanted)
409	{
410	poll_wait ();
411	poll_cb ();
412	}
413	}
414
415	static void create_pipe ()
416	{
417	if (pipe (respipe))
418	croak ("unable to initialize result pipe");
419
420	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
421	croak ("cannot set result pipe to nonblocking mode");
422
423	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
424	croak ("cannot set result pipe to nonblocking mode");
425	}
426
427	/*****************************************************************************/
428	/* work around various missing functions */
429
430	#if !HAVE_PREADWRITE
431	# define pread aio_pread
432	# define pwrite aio_pwrite
433
434	/*
435	* make our pread/pwrite safe against themselves, but not against
436	* normal read/write by using a mutex. slows down execution a lot,
437	* but that's your problem, not mine.
438	*/
439	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
440
441	static ssize_t
442	pread (int fd, void *buf, size_t count, off_t offset)
443	{
444	ssize_t res;
445	off_t ooffset;
446
447	pthread_mutex_lock (&preadwritelock);
448	ooffset = lseek (fd, 0, SEEK_CUR);
449	lseek (fd, offset, SEEK_SET);
450	res = read (fd, buf, count);
451	lseek (fd, ooffset, SEEK_SET);
452	pthread_mutex_unlock (&preadwritelock);
453
454	return res;
455	}
456
457	static ssize_t
458	pwrite (int fd, void *buf, size_t count, off_t offset)
459	{
460	ssize_t res;
461	off_t ooffset;
462
463	pthread_mutex_lock (&preadwritelock);
464	ooffset = lseek (fd, 0, SEEK_CUR);
465	lseek (fd, offset, SEEK_SET);
466	res = write (fd, buf, count);
467	lseek (fd, offset, SEEK_SET);
468	pthread_mutex_unlock (&preadwritelock);
469
470	return res;
471	}
472	#endif
473
474	#if !HAVE_FDATASYNC
475	# define fdatasync fsync
476	#endif
477
478	#if !HAVE_READAHEAD
479	# define readahead aio_readahead
480
481	static ssize_t
482	readahead (int fd, off_t offset, size_t count)
483	{
484	char readahead_buf[4096];
485
486	while (count > 0)
487	{
488	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
489
490	pread (fd, readahead_buf, len, offset);
491	offset += len;
492	count -= len;
493	}
494
495	errno = 0;
496	}
497	#endif
498
499	#if !HAVE_READDIR_R
500	# define readdir_r aio_readdir_r
501
502	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
503
504	static int
505	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
506	{
507	struct dirent *e;
508	int errorno;
509
510	pthread_mutex_lock (&readdirlock);
511
512	e = readdir (dirp);
513	errorno = errno;
514
515	if (e)
516	{
517	*res = ent;
518	strcpy (ent->d_name, e->d_name);
519	}
520	else
521	*res = 0;
522
523	pthread_mutex_unlock (&readdirlock);
524
525	errno = errorno;
526	return e ? 0 : -1;
527	}
528	#endif
529
530	/* sendfile always needs emulation */
531	static ssize_t
532	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
533	{
534	ssize_t res;
535
536	if (!count)
537	return 0;	510	return 0;
538		511
539	#if HAVE_SENDFILE	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
540	# if __linux
541	res = sendfile (ofd, ifd, &offset, count);
542		513
543	# elif __freebsd	514	if (!cv)
544	/*	515	croak ("IO::AIO callback must be undef or a CODE reference");
545	* Of course, the freebsd sendfile is a dire hack with no thoughts
546	* wasted on making it similar to other I/O functions.
547	*/
548	{
549	off_t sbytes;
550	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
551		516
552	if (res < 0 && sbytes)	517	return (SV *)cv;
553	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
554	res = sbytes;
555	}
556
557	# elif __hpux
558	res = sendfile (ofd, ifd, offset, count, 0, 0);
559
560	# elif __solaris
561	{
562	struct sendfilevec vec;
563	size_t sbytes;
564
565	vec.sfv_fd = ifd;
566	vec.sfv_flag = 0;
567	vec.sfv_off = offset;
568	vec.sfv_len = count;
569
570	res = sendfilev (ofd, &vec, 1, &sbytes);
571
572	if (res < 0 && sbytes)
573	res = sbytes;
574	}
575
576	# endif
577	#else
578	res = -1;
579	errno = ENOSYS;
580	#endif
581
582	if (res < 0
583	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
584	#if __solaris
585	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
586	#endif
587	)
588	)
589	{
590	/* emulate sendfile. this is a major pain in the ass */
591	char buf[4096];
592	res = 0;
593
594	while (count)
595	{
596	ssize_t cnt;
597
598	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
599
600	if (cnt <= 0)
601	{
602	if (cnt && !res) res = -1;
603	break;
604	}
605
606	cnt = write (ofd, buf, cnt);
607
608	if (cnt <= 0)
609	{
610	if (cnt && !res) res = -1;
611	break;
612	}
613
614	offset += cnt;
615	res += cnt;
616	count -= cnt;
617	}
618	}
619
620	return res;
621	}
622
623	/* read a full directory */
624	static int
625	scandir_ (const char *path, void **namesp)
626	{
627	DIR *dirp = opendir (path);
628	union
629	{
630	struct dirent d;
631	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
632	} u;
633	struct dirent *entp;
634	char *name, *names;
635	int memlen = 4096;
636	int memofs = 0;
637	int res = 0;
638	int errorno;
639
640	if (!dirp)
641	return -1;
642
643	names = malloc (memlen);
644
645	for (;;)
646	{
647	errno = 0, readdir_r (dirp, &u.d, &entp);
648
649	if (!entp)
650	break;
651
652	name = entp->d_name;
653
654	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
655	{
656	int len = strlen (name) + 1;
657
658	res++;
659
660	while (memofs + len > memlen)
661	{
662	memlen *= 2;
663	names = realloc (names, memlen);
664	if (!names)
665	break;
666	}
667
668	memcpy (names + memofs, name, len);
669	memofs += len;
670	}
671	}
672
673	errorno = errno;
674	closedir (dirp);
675
676	if (errorno)
677	{
678	free (names);
679	errno = errorno;
680	res = -1;
681	}
682
683	*namesp = (void *)names;
684	return res;
685	}
686
687	/*****************************************************************************/
688
689	static void *
690	aio_proc (void *thr_arg)
691	{
692	aio_req req;
693	int type;
694
695	do
696	{
697	pthread_mutex_lock (&reqlock);
698
699	for (;;)
700	{
701	req = reqs;
702
703	if (reqs)
704	{
705	reqs = reqs->next;
706	if (!reqs) reqe = 0;
707	}
708
709	if (req)
710	break;
711
712	pthread_cond_wait (&reqwait, &reqlock);
713	}
714
715	pthread_mutex_unlock (&reqlock);
716
717	errno = 0; /* strictly unnecessary */
718
719	if (!req->cancelled)
720	switch (req->type)
721	{
722	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
723	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
724
725	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
726	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
727
728	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
729	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
730	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
731
732	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
733	case REQ_CLOSE: req->result = close (req->fd); break;
734	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
735	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
736	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
737	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
738	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
739
740	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
741	case REQ_FSYNC: req->result = fsync (req->fd); break;
742	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
743
744	case REQ_QUIT:
745	break;
746
747	default:
748	req->result = ENOSYS;
749	break;
750	}
751
752	req->errorno = errno;
753
754	pthread_mutex_lock (&reslock);
755
756	req->next = 0;
757
758	if (rese)
759	{
760	rese->next = req;
761	rese = req;
762	}
763	else
764	{
765	rese = ress = req;
766
767	/* write a dummy byte to the pipe so fh becomes ready */
768	write (respipe [1], &respipe, 1);
769	}
770
771	pthread_mutex_unlock (&reslock);
772	}
773	while (type != REQ_QUIT);
774
775	return 0;
776	}
777
778	/*****************************************************************************/
779
780	static void atfork_prepare (void)
781	{
782	pthread_mutex_lock (&reqlock);
783	pthread_mutex_lock (&reslock);
784	#if !HAVE_PREADWRITE
785	pthread_mutex_lock (&preadwritelock);
786	#endif
787	#if !HAVE_READDIR_R
788	pthread_mutex_lock (&readdirlock);
789	#endif
790	}
791
792	static void atfork_parent (void)
793	{
794	#if !HAVE_READDIR_R
795	pthread_mutex_unlock (&readdirlock);
796	#endif
797	#if !HAVE_PREADWRITE
798	pthread_mutex_unlock (&preadwritelock);
799	#endif
800	pthread_mutex_unlock (&reslock);
801	pthread_mutex_unlock (&reqlock);
802	}
803
804	static void atfork_child (void)
805	{
806	aio_req prv;
807
808	started = 0;
809
810	while (reqs)
811	{
812	prv = reqs;
813	reqs = prv->next;
814	req_free (prv);
815	}
816
817	reqs = reqe = 0;
818
819	while (ress)
820	{
821	prv = ress;
822	ress = prv->next;
823	req_free (prv);
824	}
825
826	ress = rese = 0;
827
828	close (respipe [0]);
829	close (respipe [1]);
830	create_pipe ();
831
832	atfork_parent ();
833	}	518	}
834		519
835	#define dREQ \	520	#define dREQ \
		521	SV *cb_cv; \
836	aio_req req; \	522	aio_req req; \
		523	int req_pri = next_pri; \
		524	next_pri = EIO_PRI_DEFAULT; \
837	\	525	\
838	if (SvOK (callback) && !SvROK (callback)) \	526	cb_cv = get_cb (callback); \
839	croak ("callback must be undef or of reference type"); \
840	\	527	\
841	Newz (0, req, 1, aio_cb); \	528	Newz (0, req, 1, eio_req); \
842	if (!req) \	529	if (!req) \
843	croak ("out of memory during aio_req allocation"); \	530	croak ("out of memory during eio_req allocation"); \
844	\	531	\
845	req->callback = newSVsv (callback)	532	req->callback = SvREFCNT_inc (cb_cv); \
		533	req->pri = req_pri
846		534
847	#define REQ_SEND \	535	#define REQ_SEND \
		536	PUTBACK; \
848	req_send (req); \	537	req_submit (req); \
		538	SPAGAIN; \
849	\	539	\
850	if (GIMME_V != G_VOID) \	540	if (GIMME_V != G_VOID) \
851	XPUSHs (req_sv (req));	541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
852		542
		543	static int
		544	extract_fd (SV *fh, int wr)
		545	{
		546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		547
		548	if (fd < 0)
		549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		550
		551	return fd;
		552	}
		553
853	MODULE = IO::AIO PACKAGE = IO::AIO	554	MODULE = IO::AIO PACKAGE = IO::AIO
854		555
855	PROTOTYPES: ENABLE	556	PROTOTYPES: ENABLE
856		557
857	BOOT:	558	BOOT:
858	{	559	{
859	HV *stash = gv_stashpv ("IO::AIO", 1);	560	stash = gv_stashpv ("IO::AIO", 1);
860	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
861	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
862	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
863		561
		562	static const struct {
		563	const char *name;
		564	IV iv;
		565	} *civ, const_iv[] = {
		566	# define const_iv(name, value) { # name, (IV) value },
		567	# define const_eio(name) { # name, (IV) EIO_ ## name },
		568	const_iv (EXDEV , EXDEV)
		569	const_iv (ENOSYS , ENOSYS)
		570	const_iv (O_RDONLY, O_RDONLY)
		571	const_iv (O_WRONLY, O_WRONLY)
		572	const_iv (O_CREAT , O_CREAT)
		573	const_iv (O_TRUNC , O_TRUNC)
		574	#ifndef _WIN32
		575	const_iv (S_IFIFO , S_IFIFO)
		576	#endif
		577	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		578	const_eio (SYNC_FILE_RANGE_WRITE)
		579	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		580
		581	const_eio (READDIR_DENTS)
		582	const_eio (READDIR_DIRS_FIRST)
		583	const_eio (READDIR_STAT_ORDER)
		584	const_eio (READDIR_FOUND_UNKNOWN)
		585
		586	const_eio (DT_UNKNOWN)
		587	const_eio (DT_FIFO)
		588	const_eio (DT_CHR)
		589	const_eio (DT_DIR)
		590	const_eio (DT_BLK)
		591	const_eio (DT_REG)
		592	const_eio (DT_LNK)
		593	const_eio (DT_SOCK)
		594	const_eio (DT_WHT)
		595	};
		596
		597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		599
864	create_pipe ();	600	create_respipe ();
865	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
866	}
867		601
		602	if (eio_init (want_poll, done_poll) < 0)
		603	croak ("IO::AIO: unable to initialise eio library");
		604
		605	/* atfork child called in fifo order, so before eio's handler */
		606	X_THREAD_ATFORK (0, 0, atfork_child);
		607	}
		608
868	void	609	void
869	min_parallel (nthreads)	610	max_poll_reqs (int nreqs)
870	int nthreads
871	PROTOTYPE: $	611	PROTOTYPE: $
		612	CODE:
		613	eio_set_max_poll_reqs (nreqs);
872		614
873	void	615	void
874	max_parallel (nthreads)	616	max_poll_time (double nseconds)
875	int nthreads
876	PROTOTYPE: $	617	PROTOTYPE: $
877
878	int
879	max_outstanding (nreqs)
880	int nreqs
881	PROTOTYPE: $
882	CODE:	618	CODE:
883	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:
884	max_outstanding = nreqs;	643	max_outstanding = maxreqs;
885		644
886	void	645	void
887	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
888	SV * pathname
889	int flags
890	int mode
891	SV * callback
892	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
893	PPCODE:	648	PPCODE:
894	{	649	{
895	dREQ;	650	dREQ;
896		651
897	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
898	req->data = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
899	req->dataptr = SvPVbyte_nolen (req->data);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
900	req->fd = flags;	655	req->int1 = flags;
901	req->mode = mode;	656	req->int2 = mode;
902		657
903	REQ_SEND;	658	REQ_SEND;
904	}	659	}
905		660
906	void	661	void
907	aio_close (fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
908	SV * fh
909	SV * callback
910	PROTOTYPE: $;$	663	PROTOTYPE: $;$
911	ALIAS:	664	ALIAS:
912	aio_close = REQ_CLOSE
913	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
914	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
915	PPCODE:	667	PPCODE:
916	{	668	{
		669	int fd = extract_fd (fh, 0);
917	dREQ;	670	dREQ;
918		671
919	req->type = ix;	672	req->type = ix;
920	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
921	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
922		675
923	REQ_SEND (req);	676	REQ_SEND (req);
924	}	677	}
925		678
926	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
927	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
928	SV * fh
929	UV offset
930	UV length
931	SV * data
932	UV dataoffset
933	SV * callback
934	ALIAS:	728	ALIAS:
935	aio_read = REQ_READ	729	aio_read = EIO_READ
936	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
937	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
938	PPCODE:	732	PPCODE:
939	{	733	{
940	aio_req req;
941	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
942	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
943		737	UV len = SvUV (length);
944	SvUPGRADE (data, SVt_PV);
945	SvPOK_on (data);
946		738
947	if (dataoffset < 0)	739	if (dataoffset < 0)
948	dataoffset += svlen;	740	dataoffset += svlen;
949		741
950	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
951	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
952		744
953	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
954	{	746	{
955	/* write: check length and adjust. */	747	/* write: check length and adjust. */
956	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
957	length = svlen - dataoffset;	749	len = svlen - dataoffset;
958	}	750	}
959	else	751	else
960	{	752	{
961	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
962	svptr = SvGROW (data, length + dataoffset);	755	svptr = SvGROW (data, len + dataoffset + 1);
963	}	756	}
964
965	if (length < 0)
966	croak ("length must not be negative");
967		757
968	{	758	{
969	dREQ;	759	dREQ;
970		760
971	req->type = ix;	761	req->type = ix;
972	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
973	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
974	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
975	req->offset = offset;	765	req->size = len;
976	req->length = length;
977	req->data = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
978	req->dataptr = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
979		769
980	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
981	{	771	{
982	SvREADONLY_on (data);	772	SvREADONLY_on (data);
983	req->data2ptr = (void *)data;	773	req->flags |= FLAG_SV2_RO_OFF;
984	}	774	}
985		775
986	REQ_SEND;	776	REQ_SEND;
987	}	777	}
988	}	778	}
989		779
990	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
991	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)
992	SV * out_fh
993	SV * in_fh
994	UV in_offset
995	UV length
996	SV * callback
997	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
998	PPCODE:	798	PPCODE:
999	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
1000	dREQ;	802	dREQ;
1001		803
1002	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
1003	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
1004	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
1005	req->fh2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
1006	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
1007	req->offset = in_offset;	809	req->offs = SvVAL64 (in_offset);
1008	req->length = length;	810	req->size = length;
1009		811
1010	REQ_SEND;	812	REQ_SEND;
1011	}	813	}
1012		814
1013	void	815	void
1014	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1015	SV * fh
1016	UV offset
1017	IV length
1018	SV * callback
1019	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1020	PPCODE:	818	PPCODE:
1021	{	819	{
		820	int fd = extract_fd (fh, 0);
1022	dREQ;	821	dREQ;
1023		822
1024	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
1025	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
1026	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
1027	req->offset = offset;	826	req->offs = SvVAL64 (offset);
1028	req->length = length;	827	req->size = length;
1029		828
1030	REQ_SEND;	829	REQ_SEND;
1031	}	830	}
1032		831
1033	void	832	void
1034	aio_stat (fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1035	SV * fh_or_path
1036	SV * callback
1037	ALIAS:	834	ALIAS:
1038	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
1039	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
1040	PPCODE:	837	PPCODE:
1041	{	838	{
1042	dREQ;	839	dREQ;
1043		840
1044	New (0, req->statdata, 1, Stat_t);	841	req->sv1 = newSVsv (fh_or_path);
1045	if (!req->statdata)
1046	{
1047	req_free (req);
1048	croak ("out of memory during aio_req->statdata allocation");
1049	}
1050		842
1051	if (SvPOK (fh_or_path))	843	if (SvPOK (req->sv1))
1052	{	844	{
1053	req->type = ix;	845	req->type = ix;
1054	req->data = newSVsv (fh_or_path);
1055	req->dataptr = SvPVbyte_nolen (req->data);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1056	}	847	}
1057	else	848	else
1058	{	849	{
1059	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
1060	req->fh = newSVsv (fh_or_path);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1062	}	852	}
1063		853
1064	REQ_SEND;	854	REQ_SEND;
1065	}	855	}
1066		856
1067	void	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))
		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	}
		877
		878	REQ_SEND;
		879	}
		880
		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	flags |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
1068	aio_unlink (pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1069	SV * pathname
1070	SV * callback
1071	ALIAS:	973	ALIAS:
1072	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
1073	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
1074	aio_readdir = REQ_READDIR	976	aio_readdir = EIO_READDIR
1075	PPCODE:	977	PPCODE:
1076	{	978	{
1077	dREQ;	979	dREQ;
1078		980
1079	req->type = ix;	981	req->type = ix;
1080	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1081	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;
		997
		998	req->type = ix;
		999	req->sv1 = newSVsv (oldpath);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->sv2 = newSVsv (newpath);
		1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
1082		1003
1083	REQ_SEND;	1004	REQ_SEND;
1084	}	1005	}
1085		1006
1086	void	1007	void
1087	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1088	SV * oldpath
1089	SV * newpath
1090	SV * callback
1091	ALIAS:
1092	aio_link = REQ_LINK
1093	aio_symlink = REQ_SYMLINK
1094	aio_rename = REQ_RENAME
1095	PPCODE:	1009	PPCODE:
1096	{	1010	{
1097	dREQ;	1011	dREQ;
1098		1012
1099	req->type = ix;	1013	req->type = EIO_MKNOD;
1100	req->fh = newSVsv (oldpath);	1014	req->sv1 = newSVsv (pathname);
1101	req->data2ptr = SvPVbyte_nolen (req->fh);	1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1102	req->data = newSVsv (newpath);	1016	req->int2 = (mode_t)mode;
1103	req->dataptr = SvPVbyte_nolen (req->data);	1017	req->offs = dev;
1104		1018
1105	REQ_SEND;	1019	REQ_SEND;
1106	}	1020	}
1107		1021
1108	#if 0
1109
1110	# undocumented, because it does not cancel active requests
1111	void	1022	void
1112	cancel_most_requests ()	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)
1113	PROTOTYPE:	1036	PROTOTYPE: ;$
1114	CODE:	1037	PPCODE:
1115	{	1038	{
1116	aio_req *req;	1039	dREQ;
1117		1040
1118	pthread_mutex_lock (&reqlock);	1041	req->type = EIO_GROUP;
1119	for (req = reqs; req; req = req->next)
1120	req->flags |= 1;
1121	pthread_mutex_unlock (&reqlock);
1122		1042
1123	pthread_mutex_lock (&reslock);	1043	req_submit (req);
1124	for (req = ress; req; req = req->next)	1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1125	req->flags |= 1;
1126	pthread_mutex_unlock (&reslock);
1127	}	1045	}
1128		1046
1129	#endif	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
		1056	req->type = ix;
		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
		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;
1130		1082
1131	void	1083	void
1132	flush ()	1084	flush ()
1133	PROTOTYPE:	1085	PROTOTYPE:
1134	CODE:	1086	CODE:
1135	while (nreqs)	1087	while (eio_nreqs ())
1136	{	1088	{
1137	poll_wait ();	1089	poll_wait ();
1138	poll_cb ();	1090	poll_cb ();
1139	}	1091	}
1140		1092
1141	void	1093	int
1142	poll()	1094	poll()
1143	PROTOTYPE:	1095	PROTOTYPE:
1144	CODE:	1096	CODE:
1145	if (nreqs)
1146	{
1147	poll_wait ();	1097	poll_wait ();
1148	poll_cb ();	1098	RETVAL = poll_cb ();
1149	}	1099	OUTPUT:
		1100	RETVAL
1150		1101
1151	int	1102	int
1152	poll_fileno()	1103	poll_fileno()
1153	PROTOTYPE:	1104	PROTOTYPE:
1154	CODE:	1105	CODE:
…		…
1166		1117
1167	void	1118	void
1168	poll_wait()	1119	poll_wait()
1169	PROTOTYPE:	1120	PROTOTYPE:
1170	CODE:	1121	CODE:
1171	if (nreqs)
1172	poll_wait ();	1122	poll_wait ();
1173		1123
1174	int	1124	int
1175	nreqs()	1125	nreqs()
1176	PROTOTYPE:	1126	PROTOTYPE:
1177	CODE:	1127	CODE:
1178	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1179	OUTPUT:	1129	OUTPUT:
1180	RETVAL	1130	RETVAL
1181		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
1182	MODULE = IO::AIO PACKAGE = IO::AIO::CB	1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1183		1164
1184	void	1165	void
1185	cancel (aio_req_ornot req)	1166	cancel (aio_req_ornot req)
1186	PROTOTYPE:	1167	CODE:
		1168	eio_cancel (req);
		1169
		1170	void
		1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1187	CODE:	1172	PPCODE:
1188	req->cancelled = 1;	1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
1189		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