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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.64 by root, Mon Oct 23 23:54:41 2006 UTC vs.
Revision 1.126 by root, Thu Sep 25 07:56:07 2008 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
28		17
29	#if HAVE_SENDFILE	18	/* perl namespace pollution */
30	# if __linux	19	#undef VERSION
31	# include <sys/sendfile.h>	20
32	# elif __freebsd	21	#ifdef _WIN32
33	# include <sys/socket.h>	22
34	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __hpux	24	# undef malloc
36	# include <sys/socket.h>	25	# undef free
37	# elif __solaris /* not yet */	26
38	# 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
39	# else	59	#else
40	# error sendfile support requested but not available	60
41	# 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
42	#endif	68	#endif
43		69
44	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
45	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
46	# 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
47	#endif	83	#endif
48		84
49	#if __ia64	85	static HV *stash;
50	# define STACKSIZE 65536	86	typedef SV SV8; /* byte-sv, used for argument-checking */
51	#else
52	# define STACKSIZE 8192
53	#endif
54
55	enum {
56	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,
67	};
68		87
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	88	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	89	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		90
72	typedef struct aio_cb	91	#define EIO_REQ_MEMBERS \
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;	92	SV *callback; \
77	SV *fh, *fh2;	93	SV *sv1, *sv2; \
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;	94	STRLEN stroffset; \
85	int type;	95	SV *self;
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89		96
90	unsigned char flags;	97	#define EIO_NO_WRAPPERS 1
91	unsigned char pri;
92		98
93	SV *self; /* the perl counterpart of this request, if any */	99	#include "libeio/eio.h"
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	100
95	} aio_cb;	101	static int req_invoke (eio_req *req);
		102	#define EIO_FINISH(req) req_invoke (req)
		103	static void aio_grp_feed (eio_req *grp);
		104	#define EIO_FEED(req) aio_grp_feed (req)
		105	static void req_destroy (eio_req *grp);
		106	#define EIO_DESTROY(req) req_destroy (req)
96		107
97	enum {	108	enum {
98	FLAG_CANCELLED = 0x01,	109	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	110	};
100		111
		112	#include "libeio/eio.c"
		113
101	typedef aio_cb *aio_req;	114	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	115	typedef eio_req *aio_req_ornot;
103		116
104	enum {	117	static SV *on_next_submit;
105	PRI_MIN = -4,	118	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	119	static int max_outstanding;
117	static int respipe [2];
118		120
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	121	static int respipe_osf [2], respipe [2] = { -1, -1 };
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		122
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	123	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	124	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	125
		126	static void want_poll (void)
		127	{
		128	/* write a dummy byte to the pipe so fh becomes ready */
		129	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		130	}
		131
		132	static void done_poll (void)
		133	{
		134	/* read any signals sent by the worker threads */
		135	char buf [4];
		136	while (respipe_read (respipe [0], buf, 4) == 4)
		137	;
		138	}
134		139
135	/* must be called at most once */	140	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	141	static SV *req_sv (aio_req req, const char *klass)
137	{	142	{
138	if (!req->self)	143	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	161	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	162	}
158		163
159	static void aio_grp_feed (aio_req grp)	164	static void aio_grp_feed (aio_req grp)
160	{	165	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	166	if (grp->sv2 && SvOK (grp->sv2))
162	{	167	{
163	int old_len = grp->length;	168	dSP;
164		169
165	if (grp->fh2 && SvOK (grp->fh2))	170	ENTER;
		171	SAVETMPS;
		172	PUSHMARK (SP);
		173	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		174	PUTBACK;
		175	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		176	SPAGAIN;
		177	FREETMPS;
		178	LEAVE;
		179	}
		180	}
		181
		182	static void req_submit (eio_req *req)
		183	{
		184	eio_submit (req);
		185
		186	if (on_next_submit)
		187	{
		188	dSP;
		189	SV *cb = sv_2mortal (on_next_submit);
		190
		191	on_next_submit = 0;
		192
		193	PUSHMARK (SP);
		194	PUTBACK;
		195	call_sv (cb, G_DISCARD | G_EVAL);
		196	}
		197	}
		198
		199	static int req_invoke (eio_req *req)
		200	{
		201	dSP;
		202
		203	if (req->flags & FLAG_SV2_RO_OFF)
		204	SvREADONLY_off (req->sv2);
		205
		206	if (!EIO_CANCELLED (req) && SvOK (req->callback))
		207	{
		208	ENTER;
		209	SAVETMPS;
		210	PUSHMARK (SP);
		211	EXTEND (SP, 1);
		212
		213	switch (req->type)
166	{	214	{
167	dSP;	215	case EIO_READDIR:
		216	{
		217	SV *rv = &PL_sv_undef;
168		218
169	ENTER;	219	if (req->result >= 0)
170	SAVETMPS;	220	{
171	PUSHMARK (SP);	221	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	222	char *buf = req->ptr2;
173	PUTBACK;	223	AV *av = newAV ();
174	call_sv (grp->fh2, G_VOID | G_EVAL);	224
175	SPAGAIN;	225	av_extend (av, req->result - 1);
176	FREETMPS;	226
177	LEAVE;	227	for (i = 0; i < req->result; ++i)
		228	{
		229	SV *sv = newSVpv (buf, 0);
		230
		231	av_store (av, i, sv);
		232	buf += SvCUR (sv) + 1;
		233	}
		234
		235	rv = sv_2mortal (newRV_noinc ((SV *)av));
		236	}
		237
		238	PUSHs (rv);
		239	}
		240	break;
		241
		242	case EIO_OPEN:
		243	{
		244	/* convert fd to fh */
		245	SV *fh = &PL_sv_undef;
		246
		247	if (req->result >= 0)
		248	{
		249	GV *gv = (GV *)sv_newmortal ();
		250	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		251	char sym [64];
		252	int symlen;
		253
		254	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		255	gv_init (gv, stash, sym, symlen, 0);
		256
		257	symlen = snprintf (
		258	sym,
		259	sizeof (sym),
		260	"%s&=%d",
		261	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		262	req->result
		263	);
		264
		265	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		266	fh = (SV *)gv;
		267	}
		268
		269	PUSHs (fh);
		270	}
		271	break;
		272
		273	case EIO_GROUP:
		274	req->int1 = 2; /* mark group as finished */
		275
		276	if (req->sv1)
		277	{
		278	int i;
		279	AV *av = (AV *)req->sv1;
		280
		281	EXTEND (SP, AvFILL (av) + 1);
		282	for (i = 0; i <= AvFILL (av); ++i)
		283	PUSHs (*av_fetch (av, i, 0));
		284	}
		285	break;
		286
		287	case EIO_NOP:
		288	case EIO_BUSY:
		289	break;
		290
		291	case EIO_READLINK:
		292	if (req->result > 0)
		293	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		294	break;
		295
		296	case EIO_STAT:
		297	case EIO_LSTAT:
		298	case EIO_FSTAT:
		299	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		300	PL_laststatval = req->result;
		301	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		302	PUSHs (sv_2mortal (newSViv (req->result)));
		303	break;
		304
		305	case EIO_READ:
		306	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		307	*SvEND (req->sv2) = 0;
		308	PUSHs (sv_2mortal (newSViv (req->result)));
		309	break;
		310
		311	case EIO_DUP2:
		312	if (req->result > 0)
		313	req->result = 0;
		314	/* FALLTHROUGH */
		315
		316	default:
		317	PUSHs (sv_2mortal (newSViv (req->result)));
		318	break;
178	}	319	}
179		320
180	/* stop if no progress has been made */	321	errno = req->errorno;
181	if (old_len == grp->length)	322
182	{	323	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	324	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	325	SPAGAIN;
185	break;	326
186	}	327	FREETMPS;
		328	LEAVE;
		329
		330	PUTBACK;
187	}	331	}
188	}
189		332
190	static void aio_grp_dec (aio_req grp)	333	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	334	}
204		335
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
213	pthread_mutex_lock (&reslock);
214	#endif
215	req = ress;
216	#if !(__x86 || __x86_64) /* safe without sempahore on this archs */
217	pthread_mutex_unlock (&reslock);
218	#endif
219
220	if (req)
221	return;
222
223	FD_ZERO(&rfd);
224	FD_SET(respipe [0], &rfd);
225
226	select (respipe [0] + 1, &rfd, 0, 0, 0);
227	}
228	}
229
230	static void req_invoke (aio_req req)
231	{
232	dSP;
233	int errorno = errno;
234
235	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
236	return;
237
238	errno = req->errorno;
239
240	ENTER;
241	SAVETMPS;
242	PUSHMARK (SP);
243	EXTEND (SP, 1);
244
245	switch (req->type)
246	{
247	case REQ_READDIR:
248	{
249	SV *rv = &PL_sv_undef;
250
251	if (req->result >= 0)
252	{
253	char *buf = req->data2ptr;
254	AV *av = newAV ();
255
256	while (req->result)
257	{
258	SV *sv = newSVpv (buf, 0);
259
260	av_push (av, sv);
261	buf += SvCUR (sv) + 1;
262	req->result--;
263	}
264
265	rv = sv_2mortal (newRV_noinc ((SV *)av));
266	}
267
268	PUSHs (rv);
269	}
270	break;
271
272	case REQ_OPEN:
273	{
274	/* convert fd to fh */
275	SV *fh;
276
277	PUSHs (sv_2mortal (newSViv (req->result)));
278	PUTBACK;
279	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
280	SPAGAIN;
281
282	fh = SvREFCNT_inc (POPs);
283
284	PUSHMARK (SP);
285	XPUSHs (sv_2mortal (fh));
286	}
287	break;
288
289	case REQ_GROUP:
290	req->fd = 2; /* mark group as finished */
291
292	if (req->data)
293	{
294	int i;
295	AV *av = (AV *)req->data;
296
297	EXTEND (SP, AvFILL (av) + 1);
298	for (i = 0; i <= AvFILL (av); ++i)
299	PUSHs (*av_fetch (av, i, 0));
300	}
301	break;
302
303	case REQ_NOP:
304	case REQ_SLEEP:
305	break;
306
307	default:
308	PUSHs (sv_2mortal (newSViv (req->result)));
309	break;
310	}
311
312
313	PUTBACK;
314	call_sv (req->callback, G_VOID | G_EVAL);
315	SPAGAIN;
316
317	FREETMPS;
318	LEAVE;
319
320	errno = errorno;
321
322	if (SvTRUE (ERRSV))
323	{
324	req_free (req);
325	croak (0);
326	}
327	}
328
329	static void req_free (aio_req req)	336	static void req_destroy (aio_req req)
330	{	337	{
331	if (req->grp)
332	{
333	aio_req grp = req->grp;
334
335	/* unlink request */
336	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
337	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
338
339	if (grp->grp_first == req)
340	grp->grp_first = req->grp_next;
341
342	aio_grp_dec (grp);
343	}
344
345	if (req->self)	338	if (req->self)
346	{	339	{
347	sv_unmagic (req->self, PERL_MAGIC_ext);	340	sv_unmagic (req->self, PERL_MAGIC_ext);
348	SvREFCNT_dec (req->self);	341	SvREFCNT_dec (req->self);
349	}	342	}
350		343
351	SvREFCNT_dec (req->data);
352	SvREFCNT_dec (req->fh);	344	SvREFCNT_dec (req->sv1);
353	SvREFCNT_dec (req->fh2);	345	SvREFCNT_dec (req->sv2);
354	SvREFCNT_dec (req->callback);	346	SvREFCNT_dec (req->callback);
355	Safefree (req->statdata);
356
357	if (req->type == REQ_READDIR && req->result >= 0)
358	free (req->data2ptr);
359		347
360	Safefree (req);	348	Safefree (req);
361	}	349	}
362		350
363	static void req_cancel (aio_req req)	351	static void req_cancel_subs (aio_req grp)
364	{	352	{
365	req->flags |= FLAG_CANCELLED;	353	aio_req sub;
366		354
367	if (req->type == REQ_GROUP)	355	if (grp->type != EIO_GROUP)
		356	return;
		357
		358	SvREFCNT_dec (grp->sv2);
		359	grp->sv2 = 0;
		360
		361	eio_grp_cancel (grp);
		362	}
		363
		364	#ifdef USE_SOCKETS_AS_HANDLES
		365	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		366	#else
		367	# define TO_SOCKET(x) (x)
		368	#endif
		369
		370	static void
		371	create_respipe (void)
		372	{
		373	int old_readfd = respipe [0];
		374
		375	if (respipe [1] >= 0)
		376	respipe_close (TO_SOCKET (respipe [1]));
		377
		378	#ifdef _WIN32
		379	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		380	#else
		381	if (pipe (respipe))
		382	#endif
		383	croak ("unable to initialize result pipe");
		384
		385	if (old_readfd >= 0)
368	{	386	{
369	aio_req sub;	387	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		388	croak ("unable to initialize result pipe(2)");
370		389
371	for (sub = req->grp_first; sub; sub = sub->grp_next)	390	respipe_close (respipe [0]);
372	req_cancel (sub);	391	respipe [0] = old_readfd;
373	}	392	}
374	}
375		393
		394	#ifdef _WIN32
		395	int arg = 1;
		396	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		397	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		398	#else
		399	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		400	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		401	#endif
		402	croak ("unable to initialize result pipe(3)");
		403
		404	respipe_osf [0] = TO_SOCKET (respipe [0]);
		405	respipe_osf [1] = TO_SOCKET (respipe [1]);
		406	}
		407
		408	static void poll_wait (void)
		409	{
		410	fd_set rfd;
		411
		412	while (eio_nreqs ())
		413	{
		414	int size;
		415
		416	X_LOCK (reslock);
		417	size = res_queue.size;
		418	X_UNLOCK (reslock);
		419
		420	if (size)
		421	return;
		422
		423	etp_maybe_start_thread ();
		424
		425	FD_ZERO (&rfd);
		426	FD_SET (respipe [0], &rfd);
		427
		428	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		429	}
		430	}
		431
376	static int poll_cb ()	432	static int poll_cb (void)
377	{	433	{
378	dSP;
379	int count = 0;
380	int do_croak = 0;
381	aio_req req;
382
383	for (;;)	434	for (;;)
384	{	435	{
385	pthread_mutex_lock (&reslock);	436	int res = eio_poll ();
386	req = ress;
387		437
388	if (req)	438	if (res > 0)
389	{
390	ress = req->next;
391
392	if (!ress)
393	{
394	/* read any signals sent by the worker threads */
395	char buf [32];
396	while (read (respipe [0], buf, 32) == 32)
397	;
398
399	rese = 0;
400	}
401	}
402
403	pthread_mutex_unlock (&reslock);
404
405	if (!req)
406	break;	439	croak (0);
407		440
408	--nreqs;	441	if (!max_outstanding || max_outstanding > eio_nreqs ())
		442	return res;
409		443
410	if (req->type == REQ_QUIT)	444	poll_wait ();
411	started--;
412	else if (req->type == REQ_GROUP && req->length)
413	{
414	req->fd = 1; /* mark request as delayed */
415	continue;
416	}
417	else
418	{
419	if (req->type == REQ_READ)
420	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
421
422	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
423	SvREADONLY_off (req->data);
424
425	if (req->statdata)
426	{
427	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
428	PL_laststatval = req->result;
429	PL_statcache = *(req->statdata);
430	}
431
432	req_invoke (req);
433
434	count++;
435	}
436
437	req_free (req);
438	}	445	}
439
440	return count;
441	}
442
443	static void *aio_proc(void *arg);
444
445	static void start_thread (void)
446	{
447	sigset_t fullsigset, oldsigset;
448	pthread_t tid;
449	pthread_attr_t attr;
450
451	pthread_attr_init (&attr);
452	pthread_attr_setstacksize (&attr, STACKSIZE);
453	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
454
455	sigfillset (&fullsigset);
456	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
457
458	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
459	started++;
460
461	sigprocmask (SIG_SETMASK, &oldsigset, 0);
462	}
463
464	static void req_send (aio_req req)
465	{
466	while (started < wanted && nreqs >= started)
467	start_thread ();
468
469	++nreqs;
470
471	pthread_mutex_lock (&reqlock);
472
473	req->next = 0;
474
475	if (reqe)
476	{
477	reqe->next = req;
478	reqe = req;
479	}
480	else
481	reqe = reqs = req;
482
483	pthread_cond_signal (&reqwait);
484	pthread_mutex_unlock (&reqlock);
485
486	if (nreqs > max_outstanding)
487	for (;;)
488	{
489	poll_cb ();
490
491	if (nreqs <= max_outstanding)
492	break;
493
494	poll_wait ();
495	}
496	}
497
498	static void end_thread (void)
499	{
500	aio_req req;
501	Newz (0, req, 1, aio_cb);
502	req->type = REQ_QUIT;
503
504	req_send (req);
505	}
506
507	static void min_parallel (int nthreads)
508	{
509	if (wanted < nthreads)
510	wanted = nthreads;
511	}
512
513	static void max_parallel (int nthreads)
514	{
515	int cur = started;
516
517	if (wanted > nthreads)
518	wanted = nthreads;
519
520	while (cur > wanted)
521	{
522	end_thread ();
523	cur--;
524	}
525
526	while (started > wanted)
527	{
528	poll_wait ();
529	poll_cb ();
530	}
531	}
532
533	static void create_pipe ()
534	{
535	if (pipe (respipe))
536	croak ("unable to initialize result pipe");
537
538	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
539	croak ("cannot set result pipe to nonblocking mode");
540
541	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
542	croak ("cannot set result pipe to nonblocking mode");
543	}
544
545	/*****************************************************************************/
546	/* work around various missing functions */
547
548	#if !HAVE_PREADWRITE
549	# define pread aio_pread
550	# define pwrite aio_pwrite
551
552	/*
553	* make our pread/pwrite safe against themselves, but not against
554	* normal read/write by using a mutex. slows down execution a lot,
555	* but that's your problem, not mine.
556	*/
557	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
558
559	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
560	{
561	ssize_t res;
562	off_t ooffset;
563
564	pthread_mutex_lock (&preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = read (fd, buf, count);
568	lseek (fd, ooffset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570
571	return res;
572	}
573
574	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
575	{
576	ssize_t res;
577	off_t ooffset;
578
579	pthread_mutex_lock (&preadwritelock);
580	ooffset = lseek (fd, 0, SEEK_CUR);
581	lseek (fd, offset, SEEK_SET);
582	res = write (fd, buf, count);
583	lseek (fd, offset, SEEK_SET);
584	pthread_mutex_unlock (&preadwritelock);
585
586	return res;
587	}
588	#endif
589
590	#if !HAVE_FDATASYNC
591	# define fdatasync fsync
592	#endif
593
594	#if !HAVE_READAHEAD
595	# define readahead aio_readahead
596
597	static ssize_t readahead (int fd, off_t offset, size_t count)
598	{
599	char readahead_buf[4096];
600
601	while (count > 0)
602	{
603	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
604
605	pread (fd, readahead_buf, len, offset);
606	offset += len;
607	count -= len;
608	}
609
610	errno = 0;
611	}
612	#endif
613
614	#if !HAVE_READDIR_R
615	# define readdir_r aio_readdir_r
616
617	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
618
619	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
620	{
621	struct dirent *e;
622	int errorno;
623
624	pthread_mutex_lock (&readdirlock);
625
626	e = readdir (dirp);
627	errorno = errno;
628
629	if (e)
630	{
631	*res = ent;
632	strcpy (ent->d_name, e->d_name);
633	}
634	else
635	*res = 0;
636
637	pthread_mutex_unlock (&readdirlock);
638
639	errno = errorno;
640	return e ? 0 : -1;
641	}
642	#endif
643
644	/* sendfile always needs emulation */
645	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
646	{
647	ssize_t res;
648
649	if (!count)
650	return 0;
651
652	#if HAVE_SENDFILE
653	# if __linux
654	res = sendfile (ofd, ifd, &offset, count);
655
656	# elif __freebsd
657	/*
658	* Of course, the freebsd sendfile is a dire hack with no thoughts
659	* wasted on making it similar to other I/O functions.
660	*/
661	{
662	off_t sbytes;
663	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
664
665	if (res < 0 && sbytes)
666	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
667	res = sbytes;
668	}
669
670	# elif __hpux
671	res = sendfile (ofd, ifd, offset, count, 0, 0);
672
673	# elif __solaris
674	{
675	struct sendfilevec vec;
676	size_t sbytes;
677
678	vec.sfv_fd = ifd;
679	vec.sfv_flag = 0;
680	vec.sfv_off = offset;
681	vec.sfv_len = count;
682
683	res = sendfilev (ofd, &vec, 1, &sbytes);
684
685	if (res < 0 && sbytes)
686	res = sbytes;
687	}
688
689	# endif
690	#else
691	res = -1;
692	errno = ENOSYS;
693	#endif
694
695	if (res < 0
696	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
697	#if __solaris
698	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
699	#endif
700	)
701	)
702	{
703	/* emulate sendfile. this is a major pain in the ass */
704	char buf[4096];
705	res = 0;
706
707	while (count)
708	{
709	ssize_t cnt;
710
711	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
712
713	if (cnt <= 0)
714	{
715	if (cnt && !res) res = -1;
716	break;
717	}
718
719	cnt = write (ofd, buf, cnt);
720
721	if (cnt <= 0)
722	{
723	if (cnt && !res) res = -1;
724	break;
725	}
726
727	offset += cnt;
728	res += cnt;
729	count -= cnt;
730	}
731	}
732
733	return res;
734	}
735
736	/* read a full directory */
737	static int scandir_ (const char *path, void **namesp)
738	{
739	DIR *dirp = opendir (path);
740	union
741	{
742	struct dirent d;
743	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
744	} u;
745	struct dirent *entp;
746	char *name, *names;
747	int memlen = 4096;
748	int memofs = 0;
749	int res = 0;
750	int errorno;
751
752	if (!dirp)
753	return -1;
754
755	names = malloc (memlen);
756
757	for (;;)
758	{
759	errno = 0, readdir_r (dirp, &u.d, &entp);
760
761	if (!entp)
762	break;
763
764	name = entp->d_name;
765
766	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
767	{
768	int len = strlen (name) + 1;
769
770	res++;
771
772	while (memofs + len > memlen)
773	{
774	memlen *= 2;
775	names = realloc (names, memlen);
776	if (!names)
777	break;
778	}
779
780	memcpy (names + memofs, name, len);
781	memofs += len;
782	}
783	}
784
785	errorno = errno;
786	closedir (dirp);
787
788	if (errorno)
789	{
790	free (names);
791	errno = errorno;
792	res = -1;
793	}
794
795	*namesp = (void *)names;
796	return res;
797	}
798
799	/*****************************************************************************/
800
801	static void *aio_proc (void *thr_arg)
802	{
803	aio_req req;
804	int type;
805
806	do
807	{
808	pthread_mutex_lock (&reqlock);
809
810	for (;;)
811	{
812	req = reqs;
813
814	if (reqs)
815	{
816	reqs = reqs->next;
817	if (!reqs) reqe = 0;
818	}
819
820	if (req)
821	break;
822
823	pthread_cond_wait (&reqwait, &reqlock);
824	}
825
826	pthread_mutex_unlock (&reqlock);
827
828	errno = 0; /* strictly unnecessary */
829	type = req->type; /* remember type for QUIT check */
830
831	if (!(req->flags & FLAG_CANCELLED))
832	switch (type)
833	{
834	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
835	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
836
837	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
838	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
839
840	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
841	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
842	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
843
844	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
845	case REQ_CLOSE: req->result = close (req->fd); break;
846	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
847	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
848	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
849	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
850	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
851
852	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
853	case REQ_FSYNC: req->result = fsync (req->fd); break;
854	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
855
856	case REQ_SLEEP:
857	{
858	struct timeval tv;
859
860	tv.tv_sec = req->fd;
861	tv.tv_usec = req->fd2;
862
863	req->result = select (0, 0, 0, 0, &tv);
864	}
865
866	case REQ_GROUP:
867	case REQ_NOP:
868	case REQ_QUIT:
869	break;
870
871	default:
872	req->result = ENOSYS;
873	break;
874	}
875
876	req->errorno = errno;
877
878	pthread_mutex_lock (&reslock);
879
880	req->next = 0;
881
882	if (rese)
883	{
884	rese->next = req;
885	rese = req;
886	}
887	else
888	{
889	rese = ress = req;
890
891	/* write a dummy byte to the pipe so fh becomes ready */
892	write (respipe [1], &respipe, 1);
893	}
894
895	pthread_mutex_unlock (&reslock);
896	}
897	while (type != REQ_QUIT);
898
899	return 0;
900	}
901
902	/*****************************************************************************/
903
904	static void atfork_prepare (void)
905	{
906	pthread_mutex_lock (&reqlock);
907	pthread_mutex_lock (&reslock);
908	#if !HAVE_PREADWRITE
909	pthread_mutex_lock (&preadwritelock);
910	#endif
911	#if !HAVE_READDIR_R
912	pthread_mutex_lock (&readdirlock);
913	#endif
914	}
915
916	static void atfork_parent (void)
917	{
918	#if !HAVE_READDIR_R
919	pthread_mutex_unlock (&readdirlock);
920	#endif
921	#if !HAVE_PREADWRITE
922	pthread_mutex_unlock (&preadwritelock);
923	#endif
924	pthread_mutex_unlock (&reslock);
925	pthread_mutex_unlock (&reqlock);
926	}	446	}
927		447
928	static void atfork_child (void)	448	static void atfork_child (void)
929	{	449	{
930	aio_req prv;
931
932	started = 0;
933
934	while (reqs)
935	{
936	prv = reqs;
937	reqs = prv->next;
938	req_free (prv);
939	}
940
941	reqs = reqe = 0;
942
943	while (ress)
944	{
945	prv = ress;
946	ress = prv->next;
947	req_free (prv);
948	}
949
950	ress = rese = 0;
951
952	close (respipe [0]);
953	close (respipe [1]);
954	create_pipe ();	450	create_respipe ();
955
956	atfork_parent ();
957	}	451	}
958		452
959	#define dREQ \	453	#define dREQ \
960	aio_req req; \	454	aio_req req; \
961	int req_pri = next_pri; \	455	int req_pri = next_pri; \
962	next_pri = DEFAULT_PRI + PRI_BIAS; \	456	next_pri = EIO_PRI_DEFAULT; \
963	\	457	\
964	if (SvOK (callback) && !SvROK (callback)) \	458	if (SvOK (callback) && !SvROK (callback)) \
965	croak ("callback must be undef or of reference type"); \	459	croak ("callback must be undef or of reference type"); \
966	\	460	\
967	Newz (0, req, 1, aio_cb); \	461	Newz (0, req, 1, eio_req); \
968	if (!req) \	462	if (!req) \
969	croak ("out of memory during aio_req allocation"); \	463	croak ("out of memory during eio_req allocation"); \
970	\	464	\
971	req->callback = newSVsv (callback); \	465	req->callback = newSVsv (callback); \
972	req->pri = req_pri	466	req->pri = req_pri
973		467
974	#define REQ_SEND \	468	#define REQ_SEND \
		469	PUTBACK; \
975	req_send (req); \	470	req_submit (req); \
		471	SPAGAIN; \
976	\	472	\
977	if (GIMME_V != G_VOID) \	473	if (GIMME_V != G_VOID) \
978	XPUSHs (req_sv (req, AIO_REQ_KLASS));	474	XPUSHs (req_sv (req, AIO_REQ_KLASS));
979		475
980	MODULE = IO::AIO PACKAGE = IO::AIO	476	MODULE = IO::AIO PACKAGE = IO::AIO
981		477
982	PROTOTYPES: ENABLE	478	PROTOTYPES: ENABLE
983		479
984	BOOT:	480	BOOT:
985	{	481	{
986	HV *stash = gv_stashpv ("IO::AIO", 1);	482	stash = gv_stashpv ("IO::AIO", 1);
		483
987	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	484	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
988	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	485	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
989	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	486	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		487	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		488	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		489	#ifndef _WIN32
		490	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		491	#endif
990		492
991	create_pipe ();	493	create_respipe ();
992	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
993	}
994		494
		495	if (eio_init (want_poll, done_poll) < 0)
		496	croak ("IO::AIO: unable to initialise eio library");
		497
		498	/* atfork child called in fifo order, so before eio's handler */
		499	X_THREAD_ATFORK (0, 0, atfork_child);
		500	}
		501
995	void	502	void
996	min_parallel (nthreads)	503	max_poll_reqs (int nreqs)
997	int nthreads
998	PROTOTYPE: $	504	PROTOTYPE: $
		505	CODE:
		506	eio_set_max_poll_reqs (nreqs);
999		507
1000	void	508	void
1001	max_parallel (nthreads)	509	max_poll_time (double nseconds)
1002	int nthreads
1003	PROTOTYPE: $	510	PROTOTYPE: $
1004
1005	int
1006	max_outstanding (nreqs)
1007	int nreqs
1008	PROTOTYPE: $
1009	CODE:	511	CODE:
1010	RETVAL = max_outstanding;	512	eio_set_max_poll_time (nseconds);
		513
		514	void
		515	min_parallel (int nthreads)
		516	PROTOTYPE: $
		517	CODE:
		518	eio_set_min_parallel (nthreads);
		519
		520	void
		521	max_parallel (int nthreads)
		522	PROTOTYPE: $
		523	CODE:
		524	eio_set_max_parallel (nthreads);
		525
		526	void
		527	max_idle (int nthreads)
		528	PROTOTYPE: $
		529	CODE:
		530	eio_set_max_idle (nthreads);
		531
		532	void
		533	max_outstanding (int maxreqs)
		534	PROTOTYPE: $
		535	CODE:
1011	max_outstanding = nreqs;	536	max_outstanding = maxreqs;
1012		537
1013	void	538	void
1014	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	539	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1015	SV * pathname
1016	int flags
1017	int mode
1018	SV * callback
1019	PROTOTYPE: $$$;$	540	PROTOTYPE: $$$;$
1020	PPCODE:	541	PPCODE:
1021	{	542	{
1022	dREQ;	543	dREQ;
1023		544
1024	req->type = REQ_OPEN;	545	req->type = EIO_OPEN;
1025	req->data = newSVsv (pathname);	546	req->sv1 = newSVsv (pathname);
1026	req->dataptr = SvPVbyte_nolen (req->data);	547	req->ptr1 = SvPVbyte_nolen (req->sv1);
1027	req->fd = flags;	548	req->int1 = flags;
1028	req->mode = mode;	549	req->int2 = mode;
1029		550
1030	REQ_SEND;	551	REQ_SEND;
1031	}	552	}
1032		553
1033	void	554	void
1034	aio_close (fh,callback=&PL_sv_undef)	555	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1035	SV * fh
1036	SV * callback
1037	PROTOTYPE: $;$	556	PROTOTYPE: $;$
1038	ALIAS:	557	ALIAS:
1039	aio_close = REQ_CLOSE
1040	aio_fsync = REQ_FSYNC	558	aio_fsync = EIO_FSYNC
1041	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = EIO_FDATASYNC
1042	PPCODE:	560	PPCODE:
1043	{	561	{
1044	dREQ;	562	dREQ;
1045		563
1046	req->type = ix;	564	req->type = ix;
1047	req->fh = newSVsv (fh);	565	req->sv1 = newSVsv (fh);
1048	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1049		567
1050	REQ_SEND (req);	568	REQ_SEND (req);
1051	}	569	}
1052		570
1053	void	571	void
		572	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		573	PROTOTYPE: $;$
		574	PPCODE:
		575	{
		576	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		577	dREQ;
		578
		579	if (close_pipe < 0)
		580	{
		581	int pipefd [2];
		582
		583	if (pipe (pipefd) < 0
		584	|| close (pipefd [1]) < 0
		585	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		586	abort (); /*D*/
		587
		588	close_pipe = pipefd [0];
		589	}
		590
		591	req->type = EIO_DUP2;
		592	req->int1 = close_pipe;
		593	req->sv2 = newSVsv (fh);
		594	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		595
		596	REQ_SEND (req);
		597	}
		598
		599	void
1054	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	600	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1055	SV * fh
1056	UV offset
1057	UV length
1058	SV * data
1059	UV dataoffset
1060	SV * callback
1061	ALIAS:	601	ALIAS:
1062	aio_read = REQ_READ	602	aio_read = EIO_READ
1063	aio_write = REQ_WRITE	603	aio_write = EIO_WRITE
1064	PROTOTYPE: $$$$$;$	604	PROTOTYPE: $$$$$;$
1065	PPCODE:	605	PPCODE:
1066	{	606	{
1067	aio_req req;
1068	STRLEN svlen;	607	STRLEN svlen;
1069	char *svptr = SvPVbyte (data, svlen);	608	char *svptr = SvPVbyte (data, svlen);
		609	UV len = SvUV (length);
1070		610
1071	SvUPGRADE (data, SVt_PV);	611	SvUPGRADE (data, SVt_PV);
1072	SvPOK_on (data);	612	SvPOK_on (data);
1073		613
1074	if (dataoffset < 0)	614	if (dataoffset < 0)
1075	dataoffset += svlen;	615	dataoffset += svlen;
1076		616
1077	if (dataoffset < 0 || dataoffset > svlen)	617	if (dataoffset < 0 || dataoffset > svlen)
1078	croak ("data offset outside of string");	618	croak ("dataoffset outside of data scalar");
1079		619
1080	if (ix == REQ_WRITE)	620	if (ix == EIO_WRITE)
1081	{	621	{
1082	/* write: check length and adjust. */	622	/* write: check length and adjust. */
1083	if (length < 0 || length + dataoffset > svlen)	623	if (!SvOK (length) || len + dataoffset > svlen)
1084	length = svlen - dataoffset;	624	len = svlen - dataoffset;
1085	}	625	}
1086	else	626	else
1087	{	627	{
1088	/* read: grow scalar as necessary */	628	/* read: grow scalar as necessary */
1089	svptr = SvGROW (data, length + dataoffset);	629	svptr = SvGROW (data, len + dataoffset + 1);
1090	}	630	}
1091		631
1092	if (length < 0)	632	if (len < 0)
1093	croak ("length must not be negative");	633	croak ("length must not be negative");
1094		634
1095	{	635	{
1096	dREQ;	636	dREQ;
1097		637
1098	req->type = ix;	638	req->type = ix;
1099	req->fh = newSVsv (fh);	639	req->sv1 = newSVsv (fh);
1100	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	640	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1101	: IoOFP (sv_2io (fh)));	641	: IoOFP (sv_2io (fh)));
		642	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1102	req->offset = offset;	643	req->size = len;
1103	req->length = length;
1104	req->data = SvREFCNT_inc (data);	644	req->sv2 = SvREFCNT_inc (data);
1105	req->dataptr = (char *)svptr + dataoffset;	645	req->ptr2 = (char *)svptr + dataoffset;
		646	req->stroffset = dataoffset;
1106		647
1107	if (!SvREADONLY (data))	648	if (!SvREADONLY (data))
1108	{	649	{
1109	SvREADONLY_on (data);	650	SvREADONLY_on (data);
1110	req->data2ptr = (void *)data;	651	req->flags |= FLAG_SV2_RO_OFF;
1111	}	652	}
1112		653
1113	REQ_SEND;	654	REQ_SEND;
1114	}	655	}
1115	}	656	}
1116		657
1117	void	658	void
		659	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		660	PROTOTYPE: $$;$
		661	PPCODE:
		662	{
		663	SV *data;
		664	dREQ;
		665
		666	req->type = EIO_READLINK;
		667	req->sv1 = newSVsv (path);
		668	req->ptr1 = SvPVbyte_nolen (req->sv1);
		669
		670	REQ_SEND;
		671	}
		672
		673	void
1118	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	674	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1119	SV * out_fh
1120	SV * in_fh
1121	UV in_offset
1122	UV length
1123	SV * callback
1124	PROTOTYPE: $$$$;$	675	PROTOTYPE: $$$$;$
1125	PPCODE:	676	PPCODE:
1126	{	677	{
1127	dREQ;	678	dREQ;
1128		679
1129	req->type = REQ_SENDFILE;	680	req->type = EIO_SENDFILE;
1130	req->fh = newSVsv (out_fh);	681	req->sv1 = newSVsv (out_fh);
1131	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	682	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1132	req->fh2 = newSVsv (in_fh);	683	req->sv2 = newSVsv (in_fh);
1133	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	684	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1134	req->offset = in_offset;	685	req->offs = SvVAL64 (in_offset);
1135	req->length = length;	686	req->size = length;
1136		687
1137	REQ_SEND;	688	REQ_SEND;
1138	}	689	}
1139		690
1140	void	691	void
1141	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	692	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	UV offset
1144	IV length
1145	SV * callback
1146	PROTOTYPE: $$$;$	693	PROTOTYPE: $$$;$
1147	PPCODE:	694	PPCODE:
1148	{	695	{
1149	dREQ;	696	dREQ;
1150		697
1151	req->type = REQ_READAHEAD;	698	req->type = EIO_READAHEAD;
1152	req->fh = newSVsv (fh);	699	req->sv1 = newSVsv (fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1154	req->offset = offset;	701	req->offs = SvVAL64 (offset);
1155	req->length = length;	702	req->size = length;
1156		703
1157	REQ_SEND;	704	REQ_SEND;
1158	}	705	}
1159		706
1160	void	707	void
1161	aio_stat (fh_or_path,callback=&PL_sv_undef)	708	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1162	SV * fh_or_path
1163	SV * callback
1164	ALIAS:	709	ALIAS:
1165	aio_stat = REQ_STAT	710	aio_stat = EIO_STAT
1166	aio_lstat = REQ_LSTAT	711	aio_lstat = EIO_LSTAT
1167	PPCODE:	712	PPCODE:
1168	{	713	{
1169	dREQ;	714	dREQ;
1170		715
1171	New (0, req->statdata, 1, Stat_t);	716	req->sv1 = newSVsv (fh_or_path);
1172	if (!req->statdata)
1173	{
1174	req_free (req);
1175	croak ("out of memory during aio_req->statdata allocation");
1176	}
1177		717
1178	if (SvPOK (fh_or_path))	718	if (SvPOK (req->sv1))
1179	{	719	{
1180	req->type = ix;	720	req->type = ix;
1181	req->data = newSVsv (fh_or_path);
1182	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1183	}	722	}
1184	else	723	else
1185	{	724	{
1186	req->type = REQ_FSTAT;	725	req->type = EIO_FSTAT;
1187	req->fh = newSVsv (fh_or_path);
1188	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1189	}	727	}
1190		728
1191	REQ_SEND;	729	REQ_SEND;
1192	}	730	}
1193		731
1194	void	732	void
		733	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		734	PPCODE:
		735	{
		736	dREQ;
		737
		738	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		739	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		740	req->sv1 = newSVsv (fh_or_path);
		741
		742	if (SvPOK (req->sv1))
		743	{
		744	req->type = EIO_UTIME;
		745	req->ptr1 = SvPVbyte_nolen (req->sv1);
		746	}
		747	else
		748	{
		749	req->type = EIO_FUTIME;
		750	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		751	}
		752
		753	REQ_SEND;
		754	}
		755
		756	void
		757	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		758	PPCODE:
		759	{
		760	dREQ;
		761
		762	req->sv1 = newSVsv (fh_or_path);
		763	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		764
		765	if (SvPOK (req->sv1))
		766	{
		767	req->type = EIO_TRUNCATE;
		768	req->ptr1 = SvPVbyte_nolen (req->sv1);
		769	}
		770	else
		771	{
		772	req->type = EIO_FTRUNCATE;
		773	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		774	}
		775
		776	REQ_SEND;
		777	}
		778
		779	void
		780	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		781	ALIAS:
		782	aio_chmod = EIO_CHMOD
		783	aio_mkdir = EIO_MKDIR
		784	PPCODE:
		785	{
		786	dREQ;
		787
		788	req->int2 = mode;
		789	req->sv1 = newSVsv (fh_or_path);
		790
		791	if (SvPOK (req->sv1))
		792	{
		793	req->type = ix;
		794	req->ptr1 = SvPVbyte_nolen (req->sv1);
		795	}
		796	else
		797	{
		798	req->type = EIO_FCHMOD;
		799	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		800	}
		801
		802	REQ_SEND;
		803	}
		804
		805	void
		806	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		807	PPCODE:
		808	{
		809	dREQ;
		810
		811	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		812	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		813	req->sv1 = newSVsv (fh_or_path);
		814
		815	if (SvPOK (req->sv1))
		816	{
		817	req->type = EIO_CHOWN;
		818	req->ptr1 = SvPVbyte_nolen (req->sv1);
		819	}
		820	else
		821	{
		822	req->type = EIO_FCHOWN;
		823	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		824	}
		825
		826	REQ_SEND;
		827	}
		828
		829	void
1195	aio_unlink (pathname,callback=&PL_sv_undef)	830	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1196	SV * pathname
1197	SV * callback
1198	ALIAS:	831	ALIAS:
1199	aio_unlink = REQ_UNLINK	832	aio_unlink = EIO_UNLINK
1200	aio_rmdir = REQ_RMDIR	833	aio_rmdir = EIO_RMDIR
1201	aio_readdir = REQ_READDIR	834	aio_readdir = EIO_READDIR
1202	PPCODE:	835	PPCODE:
1203	{	836	{
1204	dREQ;	837	dREQ;
1205		838
1206	req->type = ix;	839	req->type = ix;
1207	req->data = newSVsv (pathname);	840	req->sv1 = newSVsv (pathname);
1208	req->dataptr = SvPVbyte_nolen (req->data);	841	req->ptr1 = SvPVbyte_nolen (req->sv1);
		842
		843	REQ_SEND;
		844	}
		845
		846	void
		847	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		848	ALIAS:
		849	aio_link = EIO_LINK
		850	aio_symlink = EIO_SYMLINK
		851	aio_rename = EIO_RENAME
		852	PPCODE:
		853	{
		854	dREQ;
		855
		856	req->type = ix;
		857	req->sv1 = newSVsv (oldpath);
		858	req->ptr1 = SvPVbyte_nolen (req->sv1);
		859	req->sv2 = newSVsv (newpath);
		860	req->ptr2 = SvPVbyte_nolen (req->sv2);
1209		861
1210	REQ_SEND;	862	REQ_SEND;
1211	}	863	}
1212		864
1213	void	865	void
1214	aio_link (oldpath,newpath,callback=&PL_sv_undef)	866	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1215	SV * oldpath
1216	SV * newpath
1217	SV * callback
1218	ALIAS:
1219	aio_link = REQ_LINK
1220	aio_symlink = REQ_SYMLINK
1221	aio_rename = REQ_RENAME
1222	PPCODE:	867	PPCODE:
1223	{	868	{
1224	dREQ;	869	dREQ;
1225		870
1226	req->type = ix;	871	req->type = EIO_MKNOD;
1227	req->fh = newSVsv (oldpath);	872	req->sv1 = newSVsv (pathname);
1228	req->data2ptr = SvPVbyte_nolen (req->fh);	873	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	req->data = newSVsv (newpath);	874	req->int2 = (mode_t)mode;
1230	req->dataptr = SvPVbyte_nolen (req->data);	875	req->offs = dev;
1231		876
1232	REQ_SEND;	877	REQ_SEND;
1233	}	878	}
1234		879
1235	void	880	void
1236	aio_sleep (delay,callback=&PL_sv_undef)	881	aio_busy (double delay, SV *callback=&PL_sv_undef)
1237	double delay
1238	SV * callback
1239	PPCODE:	882	PPCODE:
1240	{	883	{
1241	dREQ;	884	dREQ;
1242		885
1243	req->type = REQ_SLEEP;	886	req->type = EIO_BUSY;
1244	req->fd = delay < 0. ? 0 : delay;	887	req->nv1 = delay < 0. ? 0. : delay;
1245	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1246		888
1247	REQ_SEND;	889	REQ_SEND;
1248	}	890	}
1249		891
1250	void	892	void
1251	aio_group (callback=&PL_sv_undef)	893	aio_group (SV *callback=&PL_sv_undef)
1252	SV * callback
1253	PROTOTYPE: ;$	894	PROTOTYPE: ;$
1254	PPCODE:	895	PPCODE:
1255	{	896	{
1256	dREQ;	897	dREQ;
1257		898
1258	req->type = REQ_GROUP;	899	req->type = EIO_GROUP;
		900
1259	req_send (req);	901	eio_submit (req);
1260
1261	XPUSHs (req_sv (req, AIO_GRP_KLASS));	902	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1262	}	903	}
1263		904
1264	void	905	void
1265	aio_nop (callback=&PL_sv_undef)	906	aio_nop (SV *callback=&PL_sv_undef)
1266	SV * callback	907	ALIAS:
		908	aio_nop = EIO_NOP
		909	aio_sync = EIO_SYNC
1267	PPCODE:	910	PPCODE:
1268	{	911	{
1269	dREQ;	912	dREQ;
1270		913
1271	req->type = REQ_NOP;	914	req->type = ix;
1272		915
1273	REQ_SEND;	916	REQ_SEND;
1274	}	917	}
1275		918
1276	#if 0	919	int
1277		920	aioreq_pri (int pri = 0)
1278	void	921	PROTOTYPE: ;$
1279	aio_pri (int pri = DEFAULT_PRI)
1280	CODE:	922	CODE:
		923	RETVAL = next_pri;
		924	if (items > 0)
		925	{
1281	if (pri < PRI_MIN) pri = PRI_MIN;	926	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1282	if (pri > PRI_MAX) pri = PRI_MAX;	927	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1283	next_pri = pri + PRI_BIAS;	928	next_pri = pri;
		929	}
		930	OUTPUT:
		931	RETVAL
1284		932
1285	#endif	933	void
		934	aioreq_nice (int nice = 0)
		935	CODE:
		936	nice = next_pri - nice;
		937	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		938	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		939	next_pri = nice;
1286		940
1287	void	941	void
1288	flush ()	942	flush ()
1289	PROTOTYPE:	943	PROTOTYPE:
1290	CODE:	944	CODE:
1291	while (nreqs)	945	while (eio_nreqs ())
1292	{	946	{
1293	poll_wait ();	947	poll_wait ();
1294	poll_cb ();	948	poll_cb ();
1295	}	949	}
1296		950
1297	void	951	int
1298	poll()	952	poll()
1299	PROTOTYPE:	953	PROTOTYPE:
1300	CODE:	954	CODE:
1301	if (nreqs)
1302	{
1303	poll_wait ();	955	poll_wait ();
1304	poll_cb ();	956	RETVAL = poll_cb ();
1305	}	957	OUTPUT:
		958	RETVAL
1306		959
1307	int	960	int
1308	poll_fileno()	961	poll_fileno()
1309	PROTOTYPE:	962	PROTOTYPE:
1310	CODE:	963	CODE:
…		…
1322		975
1323	void	976	void
1324	poll_wait()	977	poll_wait()
1325	PROTOTYPE:	978	PROTOTYPE:
1326	CODE:	979	CODE:
1327	if (nreqs)
1328	poll_wait ();	980	poll_wait ();
1329		981
1330	int	982	int
1331	nreqs()	983	nreqs()
1332	PROTOTYPE:	984	PROTOTYPE:
1333	CODE:	985	CODE:
1334	RETVAL = nreqs;	986	RETVAL = eio_nreqs ();
1335	OUTPUT:	987	OUTPUT:
1336	RETVAL	988	RETVAL
1337		989
		990	int
		991	nready()
		992	PROTOTYPE:
		993	CODE:
		994	RETVAL = eio_nready ();
		995	OUTPUT:
		996	RETVAL
		997
		998	int
		999	npending()
		1000	PROTOTYPE:
		1001	CODE:
		1002	RETVAL = eio_npending ();
		1003	OUTPUT:
		1004	RETVAL
		1005
		1006	int
		1007	nthreads()
		1008	PROTOTYPE:
		1009	CODE:
		1010	RETVAL = eio_nthreads ();
		1011	OUTPUT:
		1012	RETVAL
		1013
		1014	void _on_next_submit (SV *cb)
		1015	CODE:
		1016	SvREFCNT_dec (on_next_submit);
		1017	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1018
1338	PROTOTYPES: DISABLE	1019	PROTOTYPES: DISABLE
1339		1020
1340	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1021	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1341		1022
1342	void	1023	void
1343	cancel (aio_req_ornot req)	1024	cancel (aio_req_ornot req)
1344	PROTOTYPE:
1345	CODE:	1025	CODE:
1346	req_cancel (req);	1026	eio_cancel (req);
1347		1027
1348	void	1028	void
1349	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1029	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1350	CODE:	1030	CODE:
1351	SvREFCNT_dec (req->callback);	1031	SvREFCNT_dec (req->callback);
…		…
1356	void	1036	void
1357	add (aio_req grp, ...)	1037	add (aio_req grp, ...)
1358	PPCODE:	1038	PPCODE:
1359	{	1039	{
1360	int i;	1040	int i;
1361	aio_req req;
1362		1041
1363	if (grp->fd == 2)	1042	if (grp->int1 == 2)
1364	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1043	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1365		1044
1366	for (i = 1; i < items; ++i )	1045	for (i = 1; i < items; ++i )
1367	{	1046	{
		1047	aio_req req;
		1048
1368	if (GIMME_V != G_VOID)	1049	if (GIMME_V != G_VOID)
1369	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1050	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1370		1051
1371	req = SvAIO_REQ (ST (i));	1052	req = SvAIO_REQ (ST (i));
1372		1053
1373	if (req)	1054	if (req)
1374	{	1055	eio_grp_add (grp, req);
1375	++grp->length;
1376	req->grp = grp;
1377
1378	req->grp_prev = 0;
1379	req->grp_next = grp->grp_first;
1380
1381	if (grp->grp_first)
1382	grp->grp_first->grp_prev = req;
1383
1384	grp->grp_first = req;
1385	}	1056	}
1386	}
1387	}	1057	}
		1058
		1059	void
		1060	cancel_subs (aio_req_ornot req)
		1061	CODE:
		1062	req_cancel_subs (req);
1388		1063
1389	void	1064	void
1390	result (aio_req grp, ...)	1065	result (aio_req grp, ...)
1391	CODE:	1066	CODE:
1392	{	1067	{
1393	int i;	1068	int i;
		1069	AV *av;
		1070
		1071	grp->errorno = errno;
		1072
1394	AV *av = newAV ();	1073	av = newAV ();
1395		1074
1396	for (i = 1; i < items; ++i )	1075	for (i = 1; i < items; ++i )
1397	av_push (av, newSVsv (ST (i)));	1076	av_push (av, newSVsv (ST (i)));
1398		1077
1399	SvREFCNT_dec (grp->data);	1078	SvREFCNT_dec (grp->sv1);
1400	grp->data = (SV *)av;	1079	grp->sv1 = (SV *)av;
1401	}	1080	}
1402		1081
1403	void	1082	void
		1083	errno (aio_req grp, int errorno = errno)
		1084	CODE:
		1085	grp->errorno = errorno;
		1086
		1087	void
1404	feed_limit (aio_req grp, int limit)	1088	limit (aio_req grp, int limit)
1405	CODE:	1089	CODE:
1406	grp->fd2 = limit;	1090	eio_grp_limit (grp, limit);
1407	aio_grp_feed (grp);
1408		1091
1409	void	1092	void
1410	feed (aio_req grp, SV *callback=&PL_sv_undef)	1093	feed (aio_req grp, SV *callback=&PL_sv_undef)
1411	CODE:	1094	CODE:
1412	{	1095	{
1413	SvREFCNT_dec (grp->fh2);	1096	SvREFCNT_dec (grp->sv2);
1414	grp->fh2 = newSVsv (callback);	1097	grp->sv2 = newSVsv (callback);
1415		1098
1416	if (grp->fd2 <= 0)	1099	if (grp->int2 <= 0)
1417	grp->fd2 = 2;	1100	grp->int2 = 2;
1418		1101
1419	aio_grp_feed (grp);	1102	eio_grp_limit (grp, grp->int2);
1420	}	1103	}
1421		1104

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