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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 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>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
23		17
24	#if HAVE_SENDFILE	18	/* perl namespace pollution */
25	# if __linux	19	#undef VERSION
26	# include <sys/sendfile.h>	20
27	# elif __freebsd	21	#ifdef _WIN32
28	# include <sys/socket.h>	22
29	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	24	# undef malloc
31	# include <sys/socket.h>	25	# undef free
32	# elif __solaris /* not yet */	26
33	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
34	# else	59	#else
35	# error sendfile support requested but not available	60
36	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
37	#endif	68	#endif
38		69
39	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
41	# 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
42	#endif	83	#endif
43		84
44	#if __ia64	85	/*****************************************************************************/
45	# define STACKSIZE 65536	86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	89	#else
47	# define STACKSIZE 8192	90	# define expect(expr,value) (expr)
48	#endif	91	#endif
49		92
50	enum {	93	#define expect_false(expr) expect ((expr) != 0, 0)
51	REQ_QUIT,	94	#define expect_true(expr) expect ((expr) != 0, 1)
52	REQ_OPEN, REQ_CLOSE,	95
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	96	/*****************************************************************************/
54	REQ_SENDFILE,	97
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	98	static HV *stash;
56	REQ_FSYNC, REQ_FDATASYNC,	99	typedef SV SV8; /* byte-sv, used for argument-checking */
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};
63		100
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		103
67	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;	105	SV *callback; \
76	SV *fh, *fh2;	106	SV *sv1, *sv2; \
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;	107	STRLEN stroffset; \
87	mode_t mode; /* open */	108	SV *self;
88	unsigned char cancelled;
89	} aio_cb;
90		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
		119	enum {
		120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		121	};
		122
		123	#include "libeio/eio.c"
		124
91	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
93		127
94	static int started, wanted;	128	static SV *on_next_submit;
95	static volatile int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	130	static int max_outstanding;
97	static int respipe [2];
98		131
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		133
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	135	static void req_cancel (aio_req req);
		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	}
107		150
108	/* must be called at most once */	151	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
110	{	153	{
111	if (!req->self)	154	if (!req->self)
…		…
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
118	}	161	}
119		162
120	static aio_req SvAIO_REQ (SV *sv)	163	static aio_req SvAIO_REQ (SV *sv)
121	{	164	{
		165	MAGIC *mg;
		166
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
123	croak ("object of class " AIO_REQ_KLASS " expected");	168	croak ("object of class " AIO_REQ_KLASS " expected");
124		169
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		171
127	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	173	}
129		174
130	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
131	{	176	{
132	while (grp->length < grp->fd2)	177	if (grp->sv2 && SvOK (grp->sv2))
133	{	178	{
134	int old_len = grp->length;	179	dSP;
135		180
136	if (grp->fh2 && SvOK (grp->fh2))	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)
137	{	225	{
138	dSP;	226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
139		229
140	ENTER;	230	if (req->result >= 0)
141	SAVETMPS;	231	{
142	PUSHMARK (SP);	232	int i;
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	233	char *names = (char *)req->ptr2;
144	PUTBACK;	234	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
145	call_sv (grp->fh2, G_VOID | G_EVAL);	235	AV *av = newAV ();
146	SPAGAIN;	236
147	FREETMPS;	237	av_extend (av, req->result - 1);
148	LEAVE;	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;
149	}	368	}
150		369
151	/* stop if no progress has been made */	370	errno = req->errorno;
152	if (old_len == grp->length)	371
153	{	372	PUTBACK;
154	SvREFCNT_dec (grp->fh2);	373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
155	grp->fh2 = 0;	374	SPAGAIN;
156	break;	375
157	}	376	FREETMPS;
		377	LEAVE;
		378
		379	PUTBACK;
158	}	380	}
159	}
160		381
161	static void poll_wait ()	382	return !!SvTRUE (ERRSV);
162	{
163	if (nreqs && !ress)
164	{
165	fd_set rfd;
166	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);
168
169	select (respipe [0] + 1, &rfd, 0, 0, 0);
170	}
171	}	383	}
172		384
173	static void req_invoke (aio_req req)
174	{
175	dSP;
176	int errorno = errno;
177
178	if (req->cancelled || !SvOK (req->callback))
179	return;
180
181	errno = req->errorno;
182
183	ENTER;
184	SAVETMPS;
185	PUSHMARK (SP);
186	EXTEND (SP, 1);
187
188	switch (req->type)
189	{
190	case REQ_READDIR:
191	{
192	SV *rv = &PL_sv_undef;
193
194	if (req->result >= 0)
195	{
196	char *buf = req->data2ptr;
197	AV *av = newAV ();
198
199	while (req->result)
200	{
201	SV *sv = newSVpv (buf, 0);
202
203	av_push (av, sv);
204	buf += SvCUR (sv) + 1;
205	req->result--;
206	}
207
208	rv = sv_2mortal (newRV_noinc ((SV *)av));
209	}
210
211	PUSHs (rv);
212	}
213	break;
214
215	case REQ_OPEN:
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
223	SPAGAIN;
224
225	fh = SvREFCNT_inc (POPs);
226
227	PUSHMARK (SP);
228	XPUSHs (sv_2mortal (fh));
229	}
230	break;
231
232	case REQ_GROUP:
233	req->fd = 2; /* mark group as finished */
234
235	if (req->data)
236	{
237	int i;
238	AV *av = (AV *)req->data;
239
240	EXTEND (SP, AvFILL (av) + 1);
241	for (i = 0; i <= AvFILL (av); ++i)
242	PUSHs (*av_fetch (av, i, 0));
243	}
244	break;
245
246	case REQ_SLEEP:
247	break;
248
249	default:
250	PUSHs (sv_2mortal (newSViv (req->result)));
251	break;
252	}
253
254
255	PUTBACK;
256	call_sv (req->callback, G_VOID | G_EVAL);
257	SPAGAIN;
258
259	if (SvTRUE (ERRSV))
260	{
261	req_free (req);
262	croak (0);
263	}
264
265	FREETMPS;
266	LEAVE;
267
268	errno = errorno;
269	}
270
271	static void req_free (aio_req req)	385	static void req_destroy (aio_req req)
272	{	386	{
273	if (req->grp)
274	{
275	aio_req grp = req->grp;
276
277	/* unlink request */
278	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280
281	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;
283
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);
288
289	/* finish, if done */
290	if (!grp->length && grp->fd)
291	{
292	req_invoke (grp);
293	req_free (grp);
294	}
295	}
296
297	if (req->self)	387	if (req->self)
298	{	388	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	389	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	390	SvREFCNT_dec (req->self);
301	}	391	}
302		392
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	393	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	394	SvREFCNT_dec (req->sv2);
306	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308
309	if (req->type == REQ_READDIR && req->result >= 0)
310	free (req->data2ptr);
311		396
312	Safefree (req);	397	Safefree (req);
313	}	398	}
314		399
315	static void req_cancel (aio_req req)	400	static void req_cancel_subs (aio_req grp)
316	{	401	{
317	req->cancelled = 1;	402	aio_req sub;
318		403
319	if (req->type == REQ_GROUP)	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
		419	static void
		420	create_respipe (void)
		421	{
		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)
320	{	435	{
321	aio_req sub;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		437	croak ("unable to initialize result pipe(2)");
322		438
323	for (sub = req->grp_first; sub; sub = sub->grp_next)	439	respipe_close (respipe [0]);
324	req_cancel (sub);	440	respipe [0] = old_readfd;
325	}	441	}
326	}
327		442
		443	#ifdef _WIN32
		444	int arg = 1;
		445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		447	#else
		448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
		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
328	static int poll_cb ()	481	static int poll_cb (void)
329	{	482	{
330	dSP;
331	int count = 0;
332	int do_croak = 0;
333	aio_req req;
334
335	for (;;)	483	for (;;)
336	{	484	{
337	pthread_mutex_lock (&reslock);	485	int res = eio_poll ();
338	req = ress;
339		486
340	if (req)	487	if (res > 0)
341	{
342	ress = req->next;
343
344	if (!ress)
345	{
346	/* read any signals sent by the worker threads */
347	char buf [32];
348	while (read (respipe [0], buf, 32) == 32)
349	;
350
351	rese = 0;
352	}
353	}
354
355	pthread_mutex_unlock (&reslock);
356
357	if (!req)
358	break;	488	croak (0);
359		489
360	nreqs--;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
361		492
362	if (req->type == REQ_QUIT)	493	poll_wait ();
363	started--;
364	else if (req->type == REQ_GROUP && req->length)
365	{
366	req->fd = 1; /* mark request as delayed */
367	continue;
368	}
369	else
370	{
371	if (req->type == REQ_READ)
372	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
373
374	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
375	SvREADONLY_off (req->data);
376
377	if (req->statdata)
378	{
379	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
380	PL_laststatval = req->result;
381	PL_statcache = *(req->statdata);
382	}
383
384	req_invoke (req);
385
386	count++;
387	}
388
389	req_free (req);
390	}	494	}
391
392	return count;
393	}	495	}
394		496
395	static void *aio_proc(void *arg);
396
397	static void start_thread (void)	497	static void atfork_child (void)
398	{	498	{
399	sigset_t fullsigset, oldsigset;	499	create_respipe ();
400	pthread_t tid;
401	pthread_attr_t attr;
402
403	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406
407	sigfillset (&fullsigset);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
411	started++;
412
413	sigprocmask (SIG_SETMASK, &oldsigset, 0);
414	}	500	}
415		501
416	static void req_send (aio_req req)	502	static SV *
		503	get_cb (SV *cb_sv)
417	{	504	{
418	while (started < wanted && nreqs >= started)	505	HV *st;
419	start_thread ();	506	GV *gvp;
		507	CV *cv;
420		508
421	nreqs++;	509	if (!SvOK (cb_sv))
422
423	pthread_mutex_lock (&reqlock);
424
425	req->next = 0;
426
427	if (reqe)
428	{
429	reqe->next = req;
430	reqe = req;
431	}
432	else
433	reqe = reqs = req;
434
435	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);
437
438	if (nreqs > max_outstanding)
439	for (;;)
440	{
441	poll_cb ();
442
443	if (nreqs <= max_outstanding)
444	break;
445
446	poll_wait ();
447	}
448	}
449
450	static void end_thread (void)
451	{
452	aio_req req;
453	Newz (0, req, 1, aio_cb);
454	req->type = REQ_QUIT;
455
456	req_send (req);
457	}
458
459	static void min_parallel (int nthreads)
460	{
461	if (wanted < nthreads)
462	wanted = nthreads;
463	}
464
465	static void max_parallel (int nthreads)
466	{
467	int cur = started;
468
469	if (wanted > nthreads)
470	wanted = nthreads;
471
472	while (cur > wanted)
473	{
474	end_thread ();
475	cur--;
476	}
477
478	while (started > wanted)
479	{
480	poll_wait ();
481	poll_cb ();
482	}
483	}
484
485	static void create_pipe ()
486	{
487	if (pipe (respipe))
488	croak ("unable to initialize result pipe");
489
490	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
491	croak ("cannot set result pipe to nonblocking mode");
492
493	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
494	croak ("cannot set result pipe to nonblocking mode");
495	}
496
497	/*****************************************************************************/
498	/* work around various missing functions */
499
500	#if !HAVE_PREADWRITE
501	# define pread aio_pread
502	# define pwrite aio_pwrite
503
504	/*
505	* make our pread/pwrite safe against themselves, but not against
506	* normal read/write by using a mutex. slows down execution a lot,
507	* but that's your problem, not mine.
508	*/
509	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
510
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
512	{
513	ssize_t res;
514	off_t ooffset;
515
516	pthread_mutex_lock (&preadwritelock);
517	ooffset = lseek (fd, 0, SEEK_CUR);
518	lseek (fd, offset, SEEK_SET);
519	res = read (fd, buf, count);
520	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);
522
523	return res;
524	}
525
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
527	{
528	ssize_t res;
529	off_t ooffset;
530
531	pthread_mutex_lock (&preadwritelock);
532	ooffset = lseek (fd, 0, SEEK_CUR);
533	lseek (fd, offset, SEEK_SET);
534	res = write (fd, buf, count);
535	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);
537
538	return res;
539	}
540	#endif
541
542	#if !HAVE_FDATASYNC
543	# define fdatasync fsync
544	#endif
545
546	#if !HAVE_READAHEAD
547	# define readahead aio_readahead
548
549	static ssize_t readahead (int fd, off_t offset, size_t count)
550	{
551	char readahead_buf[4096];
552
553	while (count > 0)
554	{
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
556
557	pread (fd, readahead_buf, len, offset);
558	offset += len;
559	count -= len;
560	}
561
562	errno = 0;
563	}
564	#endif
565
566	#if !HAVE_READDIR_R
567	# define readdir_r aio_readdir_r
568
569	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
570
571	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
572	{
573	struct dirent *e;
574	int errorno;
575
576	pthread_mutex_lock (&readdirlock);
577
578	e = readdir (dirp);
579	errorno = errno;
580
581	if (e)
582	{
583	*res = ent;
584	strcpy (ent->d_name, e->d_name);
585	}
586	else
587	*res = 0;
588
589	pthread_mutex_unlock (&readdirlock);
590
591	errno = errorno;
592	return e ? 0 : -1;
593	}
594	#endif
595
596	/* sendfile always needs emulation */
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
598	{
599	ssize_t res;
600
601	if (!count)
602	return 0;	510	return 0;
603		511
604	#if HAVE_SENDFILE	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
605	# if __linux
606	res = sendfile (ofd, ifd, &offset, count);
607		513
608	# elif __freebsd	514	if (!cv)
609	/*	515	croak ("IO::AIO callback must be undef or a CODE reference");
610	* Of course, the freebsd sendfile is a dire hack with no thoughts
611	* wasted on making it similar to other I/O functions.
612	*/
613	{
614	off_t sbytes;
615	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
616		516
617	if (res < 0 && sbytes)	517	return (SV *)cv;
618	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
619	res = sbytes;
620	}
621
622	# elif __hpux
623	res = sendfile (ofd, ifd, offset, count, 0, 0);
624
625	# elif __solaris
626	{
627	struct sendfilevec vec;
628	size_t sbytes;
629
630	vec.sfv_fd = ifd;
631	vec.sfv_flag = 0;
632	vec.sfv_off = offset;
633	vec.sfv_len = count;
634
635	res = sendfilev (ofd, &vec, 1, &sbytes);
636
637	if (res < 0 && sbytes)
638	res = sbytes;
639	}
640
641	# endif
642	#else
643	res = -1;
644	errno = ENOSYS;
645	#endif
646
647	if (res < 0
648	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
649	#if __solaris
650	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
651	#endif
652	)
653	)
654	{
655	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];
657	res = 0;
658
659	while (count)
660	{
661	ssize_t cnt;
662
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
664
665	if (cnt <= 0)
666	{
667	if (cnt && !res) res = -1;
668	break;
669	}
670
671	cnt = write (ofd, buf, cnt);
672
673	if (cnt <= 0)
674	{
675	if (cnt && !res) res = -1;
676	break;
677	}
678
679	offset += cnt;
680	res += cnt;
681	count -= cnt;
682	}
683	}
684
685	return res;
686	}
687
688	/* read a full directory */
689	static int scandir_ (const char *path, void **namesp)
690	{
691	DIR *dirp = opendir (path);
692	union
693	{
694	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;
697	struct dirent *entp;
698	char *name, *names;
699	int memlen = 4096;
700	int memofs = 0;
701	int res = 0;
702	int errorno;
703
704	if (!dirp)
705	return -1;
706
707	names = malloc (memlen);
708
709	for (;;)
710	{
711	errno = 0, readdir_r (dirp, &u.d, &entp);
712
713	if (!entp)
714	break;
715
716	name = entp->d_name;
717
718	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
719	{
720	int len = strlen (name) + 1;
721
722	res++;
723
724	while (memofs + len > memlen)
725	{
726	memlen *= 2;
727	names = realloc (names, memlen);
728	if (!names)
729	break;
730	}
731
732	memcpy (names + memofs, name, len);
733	memofs += len;
734	}
735	}
736
737	errorno = errno;
738	closedir (dirp);
739
740	if (errorno)
741	{
742	free (names);
743	errno = errorno;
744	res = -1;
745	}
746
747	*namesp = (void *)names;
748	return res;
749	}
750
751	/*****************************************************************************/
752
753	static void *aio_proc (void *thr_arg)
754	{
755	aio_req req;
756	int type;
757
758	do
759	{
760	pthread_mutex_lock (&reqlock);
761
762	for (;;)
763	{
764	req = reqs;
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771
772	if (req)
773	break;
774
775	pthread_cond_wait (&reqwait, &reqlock);
776	}
777
778	pthread_mutex_unlock (&reqlock);
779
780	errno = 0; /* strictly unnecessary */
781
782	if (!req->cancelled)
783	switch (req->type)
784	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
787
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
789	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
790
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
792	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
793	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
794
795	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
796	case REQ_CLOSE: req->result = close (req->fd); break;
797	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
798	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
799	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
802
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
806
807	case REQ_SLEEP:
808	{
809	struct timeval tv;
810
811	tv.tv_sec = req->fd;
812	tv.tv_usec = req->fd2;
813
814	req->result = select (0, 0, 0, 0, &tv);
815	}
816
817	case REQ_QUIT:
818	break;
819
820	default:
821	req->result = ENOSYS;
822	break;
823	}
824
825	req->errorno = errno;
826
827	pthread_mutex_lock (&reslock);
828
829	req->next = 0;
830
831	if (rese)
832	{
833	rese->next = req;
834	rese = req;
835	}
836	else
837	{
838	rese = ress = req;
839
840	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);
842	}
843
844	pthread_mutex_unlock (&reslock);
845	}
846	while (type != REQ_QUIT);
847
848	return 0;
849	}
850
851	/*****************************************************************************/
852
853	static void atfork_prepare (void)
854	{
855	pthread_mutex_lock (&reqlock);
856	pthread_mutex_lock (&reslock);
857	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);
859	#endif
860	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);
862	#endif
863	}
864
865	static void atfork_parent (void)
866	{
867	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);
869	#endif
870	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);
872	#endif
873	pthread_mutex_unlock (&reslock);
874	pthread_mutex_unlock (&reqlock);
875	}
876
877	static void atfork_child (void)
878	{
879	aio_req prv;
880
881	started = 0;
882
883	while (reqs)
884	{
885	prv = reqs;
886	reqs = prv->next;
887	req_free (prv);
888	}
889
890	reqs = reqe = 0;
891
892	while (ress)
893	{
894	prv = ress;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900
901	close (respipe [0]);
902	close (respipe [1]);
903	create_pipe ();
904
905	atfork_parent ();
906	}	518	}
907		519
908	#define dREQ \	520	#define dREQ \
		521	SV *cb_cv; \
909	aio_req req; \	522	aio_req req; \
		523	int req_pri = next_pri; \
		524	next_pri = EIO_PRI_DEFAULT; \
910	\	525	\
911	if (SvOK (callback) && !SvROK (callback)) \	526	cb_cv = get_cb (callback); \
912	croak ("callback must be undef or of reference type"); \
913	\	527	\
914	Newz (0, req, 1, aio_cb); \	528	Newz (0, req, 1, eio_req); \
915	if (!req) \	529	if (!req) \
916	croak ("out of memory during aio_req allocation"); \	530	croak ("out of memory during eio_req allocation"); \
917	\	531	\
918	req->callback = newSVsv (callback)	532	req->callback = SvREFCNT_inc (cb_cv); \
		533	req->pri = req_pri
919		534
920	#define REQ_SEND \	535	#define REQ_SEND \
		536	PUTBACK; \
921	req_send (req); \	537	req_submit (req); \
		538	SPAGAIN; \
922	\	539	\
923	if (GIMME_V != G_VOID) \	540	if (GIMME_V != G_VOID) \
924	XPUSHs (req_sv (req, AIO_REQ_KLASS));	541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
925		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
926	MODULE = IO::AIO PACKAGE = IO::AIO	554	MODULE = IO::AIO PACKAGE = IO::AIO
927		555
928	PROTOTYPES: ENABLE	556	PROTOTYPES: ENABLE
929		557
930	BOOT:	558	BOOT:
931	{	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)
		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)
		578
		579	const_eio (READDIR_DENTS)
		580	const_eio (READDIR_DIRS_FIRST)
		581	const_eio (READDIR_STAT_ORDER)
		582	const_eio (READDIR_FOUND_UNKNOWN)
		583
		584	const_eio (DT_UNKNOWN)
		585	const_eio (DT_FIFO)
		586	const_eio (DT_CHR)
		587	const_eio (DT_DIR)
		588	const_eio (DT_BLK)
		589	const_eio (DT_REG)
		590	const_eio (DT_LNK)
		591	const_eio (DT_SOCK)
		592	const_eio (DT_WHT)
		593	};
		594
932	HV *stash = gv_stashpv ("IO::AIO", 1);	595	stash = gv_stashpv ("IO::AIO", 1);
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
936		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
937	create_pipe ();	600	create_respipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939	}
940		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
941	void	609	void
942	min_parallel (nthreads)	610	max_poll_reqs (int nreqs)
943	int nthreads
944	PROTOTYPE: $	611	PROTOTYPE: $
		612	CODE:
		613	eio_set_max_poll_reqs (nreqs);
945		614
946	void	615	void
947	max_parallel (nthreads)	616	max_poll_time (double nseconds)
948	int nthreads
949	PROTOTYPE: $	617	PROTOTYPE: $
950
951	int
952	max_outstanding (nreqs)
953	int nreqs
954	PROTOTYPE: $
955	CODE:	618	CODE:
956	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:
957	max_outstanding = nreqs;	643	max_outstanding = maxreqs;
958		644
959	void	645	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
961	SV * pathname
962	int flags
963	int mode
964	SV * callback
965	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
966	PPCODE:	648	PPCODE:
967	{	649	{
968	dREQ;	650	dREQ;
969		651
970	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
971	req->data = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
972	req->dataptr = SvPVbyte_nolen (req->data);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
973	req->fd = flags;	655	req->int1 = flags;
974	req->mode = mode;	656	req->int2 = mode;
975		657
976	REQ_SEND;	658	REQ_SEND;
977	}	659	}
978		660
979	void	661	void
980	aio_close (fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
981	SV * fh
982	SV * callback
983	PROTOTYPE: $;$	663	PROTOTYPE: $;$
984	ALIAS:	664	ALIAS:
985	aio_close = REQ_CLOSE
986	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
987	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
988	PPCODE:	667	PPCODE:
989	{	668	{
		669	int fd = extract_fd (fh, 0);
990	dREQ;	670	dREQ;
991		671
992	req->type = ix;	672	req->type = ix;
993	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
995		675
996	REQ_SEND (req);	676	REQ_SEND (req);
997	}	677	}
998		678
999	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
1000	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1001	SV * fh
1002	UV offset
1003	UV length
1004	SV * data
1005	UV dataoffset
1006	SV * callback
1007	ALIAS:	728	ALIAS:
1008	aio_read = REQ_READ	729	aio_read = EIO_READ
1009	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
1010	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
1011	PPCODE:	732	PPCODE:
1012	{	733	{
1013	aio_req req;
1014	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
1015	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
1016		737	UV len = SvUV (length);
1017	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);
1019		738
1020	if (dataoffset < 0)	739	if (dataoffset < 0)
1021	dataoffset += svlen;	740	dataoffset += svlen;
1022		741
1023	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
1024	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
1025		744
1026	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
1027	{	746	{
1028	/* write: check length and adjust. */	747	/* write: check length and adjust. */
1029	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
1030	length = svlen - dataoffset;	749	len = svlen - dataoffset;
1031	}	750	}
1032	else	751	else
1033	{	752	{
1034	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
1035	svptr = SvGROW (data, length + dataoffset);	755	svptr = SvGROW (data, len + dataoffset + 1);
1036	}	756	}
1037
1038	if (length < 0)
1039	croak ("length must not be negative");
1040		757
1041	{	758	{
1042	dREQ;	759	dREQ;
1043		760
1044	req->type = ix;	761	req->type = ix;
1045	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
1047	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1048	req->offset = offset;	765	req->size = len;
1049	req->length = length;
1050	req->data = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
1052		769
1053	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
1054	{	771	{
1055	SvREADONLY_on (data);	772	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	773	req->flags |= FLAG_SV2_RO_OFF;
1057	}	774	}
1058		775
1059	REQ_SEND;	776	REQ_SEND;
1060	}	777	}
1061	}	778	}
1062		779
1063	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
1064	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)
1065	SV * out_fh
1066	SV * in_fh
1067	UV in_offset
1068	UV length
1069	SV * callback
1070	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
1071	PPCODE:	798	PPCODE:
1072	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
1073	dREQ;	802	dREQ;
1074		803
1075	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
1076	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
1078	req->fh2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
1080	req->offset = in_offset;	809	req->offs = SvVAL64 (in_offset);
1081	req->length = length;	810	req->size = length;
1082		811
1083	REQ_SEND;	812	REQ_SEND;
1084	}	813	}
1085		814
1086	void	815	void
1087	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1088	SV * fh
1089	UV offset
1090	IV length
1091	SV * callback
1092	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1093	PPCODE:	818	PPCODE:
1094	{	819	{
		820	int fd = extract_fd (fh, 0);
1095	dREQ;	821	dREQ;
1096		822
1097	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
1098	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
1100	req->offset = offset;	826	req->offs = SvVAL64 (offset);
1101	req->length = length;	827	req->size = length;
1102		828
1103	REQ_SEND;	829	REQ_SEND;
1104	}	830	}
1105		831
1106	void	832	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1108	SV * fh_or_path
1109	SV * callback
1110	ALIAS:	834	ALIAS:
1111	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
1112	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
1113	PPCODE:	837	PPCODE:
1114	{	838	{
1115	dREQ;	839	dREQ;
1116		840
1117	New (0, req->statdata, 1, Stat_t);	841	req->sv1 = newSVsv (fh_or_path);
1118	if (!req->statdata)
1119	{
1120	req_free (req);
1121	croak ("out of memory during aio_req->statdata allocation");
1122	}
1123		842
1124	if (SvPOK (fh_or_path))	843	if (SvPOK (req->sv1))
1125	{	844	{
1126	req->type = ix;	845	req->type = ix;
1127	req->data = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1129	}	847	}
1130	else	848	else
1131	{	849	{
1132	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
1133	req->fh = newSVsv (fh_or_path);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1135	}	852	}
1136		853
1137	REQ_SEND;	854	REQ_SEND;
1138	}	855	}
1139		856
1140	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	req->int1 |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
1141	aio_unlink (pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1142	SV * pathname
1143	SV * callback
1144	ALIAS:	973	ALIAS:
1145	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
1146	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
1147	aio_readdir = REQ_READDIR	976	aio_readdir = EIO_READDIR
1148	PPCODE:	977	PPCODE:
1149	{	978	{
1150	dREQ;	979	dREQ;
1151		980
1152	req->type = ix;	981	req->type = ix;
1153	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1154	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);
1155		1003
1156	REQ_SEND;	1004	REQ_SEND;
1157	}	1005	}
1158		1006
1159	void	1007	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1161	SV * oldpath
1162	SV * newpath
1163	SV * callback
1164	ALIAS:
1165	aio_link = REQ_LINK
1166	aio_symlink = REQ_SYMLINK
1167	aio_rename = REQ_RENAME
1168	PPCODE:	1009	PPCODE:
1169	{	1010	{
1170	dREQ;	1011	dREQ;
1171		1012
1172	req->type = ix;	1013	req->type = EIO_MKNOD;
1173	req->fh = newSVsv (oldpath);	1014	req->sv1 = newSVsv (pathname);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1175	req->data = newSVsv (newpath);	1016	req->int2 = (mode_t)mode;
1176	req->dataptr = SvPVbyte_nolen (req->data);	1017	req->offs = dev;
1177		1018
1178	REQ_SEND;	1019	REQ_SEND;
1179	}	1020	}
1180		1021
1181	void	1022	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
1183	double delay
1184	SV * callback
1185	PPCODE:	1024	PPCODE:
1186	{	1025	{
1187	dREQ;	1026	dREQ;
1188		1027
1189	req->type = REQ_SLEEP;	1028	req->type = EIO_BUSY;
1190	req->fd = delay < 0. ? 0 : delay;	1029	req->nv1 = delay < 0. ? 0. : delay;
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1192		1030
1193	REQ_SEND;	1031	REQ_SEND;
1194	}	1032	}
1195		1033
1196	void	1034	void
1197	aio_group (callback=&PL_sv_undef)	1035	aio_group (SV *callback=&PL_sv_undef)
1198	SV * callback
1199	PROTOTYPE: ;$	1036	PROTOTYPE: ;$
1200	PPCODE:	1037	PPCODE:
1201	{	1038	{
1202	dREQ;	1039	dREQ;
		1040
1203	req->type = REQ_GROUP;	1041	req->type = EIO_GROUP;
		1042
1204	req_send (req);	1043	req_submit (req);
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1206	}	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
		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;
1207		1082
1208	void	1083	void
1209	flush ()	1084	flush ()
1210	PROTOTYPE:	1085	PROTOTYPE:
1211	CODE:	1086	CODE:
1212	while (nreqs)	1087	while (eio_nreqs ())
1213	{	1088	{
1214	poll_wait ();	1089	poll_wait ();
1215	poll_cb ();	1090	poll_cb ();
1216	}	1091	}
1217		1092
1218	void	1093	int
1219	poll()	1094	poll()
1220	PROTOTYPE:	1095	PROTOTYPE:
1221	CODE:	1096	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	1097	poll_wait ();
1225	poll_cb ();	1098	RETVAL = poll_cb ();
1226	}	1099	OUTPUT:
		1100	RETVAL
1227		1101
1228	int	1102	int
1229	poll_fileno()	1103	poll_fileno()
1230	PROTOTYPE:	1104	PROTOTYPE:
1231	CODE:	1105	CODE:
…		…
1243		1117
1244	void	1118	void
1245	poll_wait()	1119	poll_wait()
1246	PROTOTYPE:	1120	PROTOTYPE:
1247	CODE:	1121	CODE:
1248	if (nreqs)
1249	poll_wait ();	1122	poll_wait ();
1250		1123
1251	int	1124	int
1252	nreqs()	1125	nreqs()
1253	PROTOTYPE:	1126	PROTOTYPE:
1254	CODE:	1127	CODE:
1255	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1256	OUTPUT:	1129	OUTPUT:
1257	RETVAL	1130	RETVAL
1258		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
1259	PROTOTYPES: DISABLE	1161	PROTOTYPES: DISABLE
1260		1162
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262		1164
1263	void	1165	void
1264	cancel (aio_req_ornot req)	1166	cancel (aio_req_ornot req)
1265	PROTOTYPE:
1266	CODE:	1167	CODE:
1267	req_cancel (req);	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	}
1268		1185
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1187
1271	void	1188	void
1272	add (aio_req grp, ...)	1189	add (aio_req grp, ...)
1273	PPCODE:	1190	PPCODE:
1274	{	1191	{
1275	int i;	1192	int i;
1276		1193
1277	if (grp->fd == 2)	1194	if (grp->int1 == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		1196
1280	for (i = 1; i < items; ++i )	1197	for (i = 1; i < items; ++i )
1281	{	1198	{
		1199	aio_req req;
		1200
1282	if (GIMME_V != G_VOID)	1201	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1203
1285	aio_req req = SvAIO_REQ (ST (i));	1204	req = SvAIO_REQ (ST (i));
1286		1205
1287	if (req)	1206	if (req)
1288	{	1207	eio_grp_add (grp, req);
1289	++grp->length;
1290	req->grp = grp;
1291
1292	req->grp_prev = 0;
1293	req->grp_next = grp->grp_first;
1294
1295	if (grp->grp_first)
1296	grp->grp_first->grp_prev = req;
1297
1298	grp->grp_first = req;
1299	}	1208	}
1300	}
1301	}	1209	}
		1210
		1211	void
		1212	cancel_subs (aio_req_ornot req)
		1213	CODE:
		1214	req_cancel_subs (req);
1302		1215
1303	void	1216	void
1304	result (aio_req grp, ...)	1217	result (aio_req grp, ...)
1305	CODE:	1218	CODE:
1306	{	1219	{
1307	int i;	1220	int i;
1308	AV *av = newAV ();	1221	AV *av;
1309		1222
		1223	grp->errorno = errno;
		1224
		1225	av = newAV ();
		1226	av_extend (av, items - 1);
		1227
1310	for (i = 1; i < items; ++i )	1228	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));	1229	av_push (av, newSVsv (ST (i)));
1312		1230
1313	SvREFCNT_dec (grp->data);	1231	SvREFCNT_dec (grp->sv1);
1314	grp->data = (SV *)av;	1232	grp->sv1 = (SV *)av;
1315	}	1233	}
1316		1234
1317	void	1235	void
		1236	errno (aio_req grp, int errorno = errno)
		1237	CODE:
		1238	grp->errorno = errorno;
		1239
		1240	void
1318	feeder_limit (aio_req grp, int limit)	1241	limit (aio_req grp, int limit)
1319	CODE:	1242	CODE:
1320	grp->fd2 = limit;	1243	eio_grp_limit (grp, limit);
1321	aio_grp_feed (grp);
1322		1244
1323	void	1245	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:	1247	CODE:
1326	{	1248	{
1327	SvREFCNT_dec (grp->fh2);	1249	SvREFCNT_dec (grp->sv2);
1328	grp->fh2 = newSVsv (callback);	1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
1329		1252
1330	if (grp->fd2 <= 0)	1253	if (grp->int2 <= 0)
1331	grp->fd2 = 2;	1254	grp->int2 = 2;
1332		1255
1333	aio_grp_feed (grp);	1256	eio_grp_limit (grp, grp->int2);
1334	}	1257	}
1335		1258

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