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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 1.126 by root, Thu Sep 25 07:56:07 2008 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	static HV *stash;
45	# define STACKSIZE 65536	86	typedef SV SV8; /* byte-sv, used for argument-checking */
46	#else
47	# define STACKSIZE 8192
48	#endif
49
50	enum {
51	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};
63		87
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	88	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	89	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		90
67	typedef struct aio_cb	91	#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;	92	SV *callback; \
76	SV *fh, *fh2;	93	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;	94	STRLEN stroffset; \
87	mode_t mode; /* open */	95	SV *self;
88	unsigned char cancelled;
89	} aio_cb;
90		96
		97	#define EIO_NO_WRAPPERS 1
		98
		99	#include "libeio/eio.h"
		100
		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)
		107
		108	enum {
		109	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		110	};
		111
		112	#include "libeio/eio.c"
		113
91	typedef aio_cb *aio_req;	114	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	115	typedef eio_req *aio_req_ornot;
93		116
94	static int started, wanted;	117	static SV *on_next_submit;
95	static volatile int nreqs;	118	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	119	static int max_outstanding;
97	static int respipe [2];
98		120
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	121	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		122
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	123	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);	124	static void req_cancel (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	}
107		139
108	/* must be called at most once */	140	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	141	static SV *req_sv (aio_req req, const char *klass)
110	{	142	{
111	if (!req->self)	143	if (!req->self)
…		…
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	149	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
118	}	150	}
119		151
120	static aio_req SvAIO_REQ (SV *sv)	152	static aio_req SvAIO_REQ (SV *sv)
121	{	153	{
		154	MAGIC *mg;
		155
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	156	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
123	croak ("object of class " AIO_REQ_KLASS " expected");	157	croak ("object of class " AIO_REQ_KLASS " expected");
124		158
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	159	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		160
127	return mg ? (aio_req)mg->mg_ptr : 0;	161	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	162	}
129		163
130	static void aio_grp_feed (aio_req grp)	164	static void aio_grp_feed (aio_req grp)
131	{	165	{
132	while (grp->length < grp->fd2)	166	if (grp->sv2 && SvOK (grp->sv2))
133	{	167	{
134	int old_len = grp->length;	168	dSP;
135		169
136	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)
137	{	214	{
138	dSP;	215	case EIO_READDIR:
		216	{
		217	SV *rv = &PL_sv_undef;
139		218
140	ENTER;	219	if (req->result >= 0)
141	SAVETMPS;	220	{
142	PUSHMARK (SP);	221	int i;
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	222	char *buf = req->ptr2;
144	PUTBACK;	223	AV *av = newAV ();
145	call_sv (grp->fh2, G_VOID | G_EVAL);	224
146	SPAGAIN;	225	av_extend (av, req->result - 1);
147	FREETMPS;	226
148	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;
149	}	319	}
150		320
151	/* stop if no progress has been made */	321	errno = req->errorno;
152	if (old_len == grp->length)	322
153	{	323	PUTBACK;
154	SvREFCNT_dec (grp->fh2);	324	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
155	grp->fh2 = 0;	325	SPAGAIN;
156	break;	326
157	}	327	FREETMPS;
		328	LEAVE;
		329
		330	PUTBACK;
158	}	331	}
159	}
160		332
161	static void poll_wait ()	333	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	}	334	}
172		335
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)	336	static void req_destroy (aio_req req)
272	{	337	{
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)	338	if (req->self)
298	{	339	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	340	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	341	SvREFCNT_dec (req->self);
301	}	342	}
302		343
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	344	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	345	SvREFCNT_dec (req->sv2);
306	SvREFCNT_dec (req->callback);	346	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308
309	if (req->type == REQ_READDIR && req->result >= 0)
310	free (req->data2ptr);
311		347
312	Safefree (req);	348	Safefree (req);
313	}	349	}
314		350
315	static void req_cancel (aio_req req)	351	static void req_cancel_subs (aio_req grp)
316	{	352	{
317	req->cancelled = 1;	353	aio_req sub;
318		354
319	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)
320	{	386	{
321	aio_req sub;	387	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		388	croak ("unable to initialize result pipe(2)");
322		389
323	for (sub = req->grp_first; sub; sub = sub->grp_next)	390	respipe_close (respipe [0]);
324	req_cancel (sub);	391	respipe [0] = old_readfd;
325	}	392	}
326	}
327		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
328	static int poll_cb ()	432	static int poll_cb (void)
329	{	433	{
330	dSP;
331	int count = 0;
332	int do_croak = 0;
333	aio_req req;
334
335	for (;;)	434	for (;;)
336	{	435	{
337	pthread_mutex_lock (&reslock);	436	int res = eio_poll ();
338	req = ress;
339		437
340	if (req)	438	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;	439	croak (0);
359		440
360	nreqs--;	441	if (!max_outstanding || max_outstanding > eio_nreqs ())
		442	return res;
361		443
362	if (req->type == REQ_QUIT)	444	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	}	445	}
391
392	return count;
393	}
394
395	static void *aio_proc(void *arg);
396
397	static void start_thread (void)
398	{
399	sigset_t fullsigset, oldsigset;
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	}
415
416	static void req_send (aio_req req)
417	{
418	while (started < wanted && nreqs >= started)
419	start_thread ();
420
421	nreqs++;
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;
603
604	#if HAVE_SENDFILE
605	# if __linux
606	res = sendfile (ofd, ifd, &offset, count);
607
608	# elif __freebsd
609	/*
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
617	if (res < 0 && sbytes)
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	}	446	}
876		447
877	static void atfork_child (void)	448	static void atfork_child (void)
878	{	449	{
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 ();	450	create_respipe ();
904
905	atfork_parent ();
906	}	451	}
907		452
908	#define dREQ \	453	#define dREQ \
909	aio_req req; \	454	aio_req req; \
		455	int req_pri = next_pri; \
		456	next_pri = EIO_PRI_DEFAULT; \
910	\	457	\
911	if (SvOK (callback) && !SvROK (callback)) \	458	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \	459	croak ("callback must be undef or of reference type"); \
913	\	460	\
914	Newz (0, req, 1, aio_cb); \	461	Newz (0, req, 1, eio_req); \
915	if (!req) \	462	if (!req) \
916	croak ("out of memory during aio_req allocation"); \	463	croak ("out of memory during eio_req allocation"); \
917	\	464	\
918	req->callback = newSVsv (callback)	465	req->callback = newSVsv (callback); \
		466	req->pri = req_pri
919		467
920	#define REQ_SEND \	468	#define REQ_SEND \
		469	PUTBACK; \
921	req_send (req); \	470	req_submit (req); \
		471	SPAGAIN; \
922	\	472	\
923	if (GIMME_V != G_VOID) \	473	if (GIMME_V != G_VOID) \
924	XPUSHs (req_sv (req, AIO_REQ_KLASS));	474	XPUSHs (req_sv (req, AIO_REQ_KLASS));
925		475
926	MODULE = IO::AIO PACKAGE = IO::AIO	476	MODULE = IO::AIO PACKAGE = IO::AIO
927		477
928	PROTOTYPES: ENABLE	478	PROTOTYPES: ENABLE
929		479
930	BOOT:	480	BOOT:
931	{	481	{
932	HV *stash = gv_stashpv ("IO::AIO", 1);	482	stash = gv_stashpv ("IO::AIO", 1);
		483
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	484	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	485	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	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
936		492
937	create_pipe ();	493	create_respipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939	}
940		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
941	void	502	void
942	min_parallel (nthreads)	503	max_poll_reqs (int nreqs)
943	int nthreads
944	PROTOTYPE: $	504	PROTOTYPE: $
		505	CODE:
		506	eio_set_max_poll_reqs (nreqs);
945		507
946	void	508	void
947	max_parallel (nthreads)	509	max_poll_time (double nseconds)
948	int nthreads
949	PROTOTYPE: $	510	PROTOTYPE: $
950
951	int
952	max_outstanding (nreqs)
953	int nreqs
954	PROTOTYPE: $
955	CODE:	511	CODE:
956	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:
957	max_outstanding = nreqs;	536	max_outstanding = maxreqs;
958		537
959	void	538	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	539	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: $$$;$	540	PROTOTYPE: $$$;$
966	PPCODE:	541	PPCODE:
967	{	542	{
968	dREQ;	543	dREQ;
969		544
970	req->type = REQ_OPEN;	545	req->type = EIO_OPEN;
971	req->data = newSVsv (pathname);	546	req->sv1 = newSVsv (pathname);
972	req->dataptr = SvPVbyte_nolen (req->data);	547	req->ptr1 = SvPVbyte_nolen (req->sv1);
973	req->fd = flags;	548	req->int1 = flags;
974	req->mode = mode;	549	req->int2 = mode;
975		550
976	REQ_SEND;	551	REQ_SEND;
977	}	552	}
978		553
979	void	554	void
980	aio_close (fh,callback=&PL_sv_undef)	555	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
981	SV * fh
982	SV * callback
983	PROTOTYPE: $;$	556	PROTOTYPE: $;$
984	ALIAS:	557	ALIAS:
985	aio_close = REQ_CLOSE
986	aio_fsync = REQ_FSYNC	558	aio_fsync = EIO_FSYNC
987	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = EIO_FDATASYNC
988	PPCODE:	560	PPCODE:
989	{	561	{
990	dREQ;	562	dREQ;
991		563
992	req->type = ix;	564	req->type = ix;
993	req->fh = newSVsv (fh);	565	req->sv1 = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
995		567
996	REQ_SEND (req);	568	REQ_SEND (req);
997	}	569	}
998		570
999	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
1000	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)
1001	SV * fh
1002	UV offset
1003	UV length
1004	SV * data
1005	UV dataoffset
1006	SV * callback
1007	ALIAS:	601	ALIAS:
1008	aio_read = REQ_READ	602	aio_read = EIO_READ
1009	aio_write = REQ_WRITE	603	aio_write = EIO_WRITE
1010	PROTOTYPE: $$$$$;$	604	PROTOTYPE: $$$$$;$
1011	PPCODE:	605	PPCODE:
1012	{	606	{
1013	aio_req req;
1014	STRLEN svlen;	607	STRLEN svlen;
1015	char *svptr = SvPVbyte (data, svlen);	608	char *svptr = SvPVbyte (data, svlen);
		609	UV len = SvUV (length);
1016		610
1017	SvUPGRADE (data, SVt_PV);	611	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);	612	SvPOK_on (data);
1019		613
1020	if (dataoffset < 0)	614	if (dataoffset < 0)
1021	dataoffset += svlen;	615	dataoffset += svlen;
1022		616
1023	if (dataoffset < 0 || dataoffset > svlen)	617	if (dataoffset < 0 || dataoffset > svlen)
1024	croak ("data offset outside of string");	618	croak ("dataoffset outside of data scalar");
1025		619
1026	if (ix == REQ_WRITE)	620	if (ix == EIO_WRITE)
1027	{	621	{
1028	/* write: check length and adjust. */	622	/* write: check length and adjust. */
1029	if (length < 0 || length + dataoffset > svlen)	623	if (!SvOK (length) || len + dataoffset > svlen)
1030	length = svlen - dataoffset;	624	len = svlen - dataoffset;
1031	}	625	}
1032	else	626	else
1033	{	627	{
1034	/* read: grow scalar as necessary */	628	/* read: grow scalar as necessary */
1035	svptr = SvGROW (data, length + dataoffset);	629	svptr = SvGROW (data, len + dataoffset + 1);
1036	}	630	}
1037		631
1038	if (length < 0)	632	if (len < 0)
1039	croak ("length must not be negative");	633	croak ("length must not be negative");
1040		634
1041	{	635	{
1042	dREQ;	636	dREQ;
1043		637
1044	req->type = ix;	638	req->type = ix;
1045	req->fh = newSVsv (fh);	639	req->sv1 = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	640	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1047	: IoOFP (sv_2io (fh)));	641	: IoOFP (sv_2io (fh)));
		642	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1048	req->offset = offset;	643	req->size = len;
1049	req->length = length;
1050	req->data = SvREFCNT_inc (data);	644	req->sv2 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	645	req->ptr2 = (char *)svptr + dataoffset;
		646	req->stroffset = dataoffset;
1052		647
1053	if (!SvREADONLY (data))	648	if (!SvREADONLY (data))
1054	{	649	{
1055	SvREADONLY_on (data);	650	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	651	req->flags |= FLAG_SV2_RO_OFF;
1057	}	652	}
1058		653
1059	REQ_SEND;	654	REQ_SEND;
1060	}	655	}
1061	}	656	}
1062		657
1063	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
1064	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)
1065	SV * out_fh
1066	SV * in_fh
1067	UV in_offset
1068	UV length
1069	SV * callback
1070	PROTOTYPE: $$$$;$	675	PROTOTYPE: $$$$;$
1071	PPCODE:	676	PPCODE:
1072	{	677	{
1073	dREQ;	678	dREQ;
1074		679
1075	req->type = REQ_SENDFILE;	680	req->type = EIO_SENDFILE;
1076	req->fh = newSVsv (out_fh);	681	req->sv1 = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	682	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1078	req->fh2 = newSVsv (in_fh);	683	req->sv2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	684	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1080	req->offset = in_offset;	685	req->offs = SvVAL64 (in_offset);
1081	req->length = length;	686	req->size = length;
1082		687
1083	REQ_SEND;	688	REQ_SEND;
1084	}	689	}
1085		690
1086	void	691	void
1087	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	692	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1088	SV * fh
1089	UV offset
1090	IV length
1091	SV * callback
1092	PROTOTYPE: $$$;$	693	PROTOTYPE: $$$;$
1093	PPCODE:	694	PPCODE:
1094	{	695	{
1095	dREQ;	696	dREQ;
1096		697
1097	req->type = REQ_READAHEAD;	698	req->type = EIO_READAHEAD;
1098	req->fh = newSVsv (fh);	699	req->sv1 = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1100	req->offset = offset;	701	req->offs = SvVAL64 (offset);
1101	req->length = length;	702	req->size = length;
1102		703
1103	REQ_SEND;	704	REQ_SEND;
1104	}	705	}
1105		706
1106	void	707	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)	708	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1108	SV * fh_or_path
1109	SV * callback
1110	ALIAS:	709	ALIAS:
1111	aio_stat = REQ_STAT	710	aio_stat = EIO_STAT
1112	aio_lstat = REQ_LSTAT	711	aio_lstat = EIO_LSTAT
1113	PPCODE:	712	PPCODE:
1114	{	713	{
1115	dREQ;	714	dREQ;
1116		715
1117	New (0, req->statdata, 1, Stat_t);	716	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		717
1124	if (SvPOK (fh_or_path))	718	if (SvPOK (req->sv1))
1125	{	719	{
1126	req->type = ix;	720	req->type = ix;
1127	req->data = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1129	}	722	}
1130	else	723	else
1131	{	724	{
1132	req->type = REQ_FSTAT;	725	req->type = EIO_FSTAT;
1133	req->fh = newSVsv (fh_or_path);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1135	}	727	}
1136		728
1137	REQ_SEND;	729	REQ_SEND;
1138	}	730	}
1139		731
1140	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
1141	aio_unlink (pathname,callback=&PL_sv_undef)	830	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1142	SV * pathname
1143	SV * callback
1144	ALIAS:	831	ALIAS:
1145	aio_unlink = REQ_UNLINK	832	aio_unlink = EIO_UNLINK
1146	aio_rmdir = REQ_RMDIR	833	aio_rmdir = EIO_RMDIR
1147	aio_readdir = REQ_READDIR	834	aio_readdir = EIO_READDIR
1148	PPCODE:	835	PPCODE:
1149	{	836	{
1150	dREQ;	837	dREQ;
1151		838
1152	req->type = ix;	839	req->type = ix;
1153	req->data = newSVsv (pathname);	840	req->sv1 = newSVsv (pathname);
1154	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);
1155		861
1156	REQ_SEND;	862	REQ_SEND;
1157	}	863	}
1158		864
1159	void	865	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	866	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:	867	PPCODE:
1169	{	868	{
1170	dREQ;	869	dREQ;
1171		870
1172	req->type = ix;	871	req->type = EIO_MKNOD;
1173	req->fh = newSVsv (oldpath);	872	req->sv1 = newSVsv (pathname);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	873	req->ptr1 = SvPVbyte_nolen (req->sv1);
1175	req->data = newSVsv (newpath);	874	req->int2 = (mode_t)mode;
1176	req->dataptr = SvPVbyte_nolen (req->data);	875	req->offs = dev;
1177		876
1178	REQ_SEND;	877	REQ_SEND;
1179	}	878	}
1180		879
1181	void	880	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	881	aio_busy (double delay, SV *callback=&PL_sv_undef)
1183	double delay
1184	SV * callback
1185	PPCODE:	882	PPCODE:
1186	{	883	{
1187	dREQ;	884	dREQ;
1188		885
1189	req->type = REQ_SLEEP;	886	req->type = EIO_BUSY;
1190	req->fd = delay < 0. ? 0 : delay;	887	req->nv1 = delay < 0. ? 0. : delay;
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1192		888
1193	REQ_SEND;	889	REQ_SEND;
1194	}	890	}
1195		891
1196	void	892	void
1197	aio_group (callback=&PL_sv_undef)	893	aio_group (SV *callback=&PL_sv_undef)
1198	SV * callback
1199	PROTOTYPE: ;$	894	PROTOTYPE: ;$
1200	PPCODE:	895	PPCODE:
1201	{	896	{
1202	dREQ;	897	dREQ;
		898
1203	req->type = REQ_GROUP;	899	req->type = EIO_GROUP;
		900
1204	req_send (req);	901	eio_submit (req);
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	902	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1206	}	903	}
		904
		905	void
		906	aio_nop (SV *callback=&PL_sv_undef)
		907	ALIAS:
		908	aio_nop = EIO_NOP
		909	aio_sync = EIO_SYNC
		910	PPCODE:
		911	{
		912	dREQ;
		913
		914	req->type = ix;
		915
		916	REQ_SEND;
		917	}
		918
		919	int
		920	aioreq_pri (int pri = 0)
		921	PROTOTYPE: ;$
		922	CODE:
		923	RETVAL = next_pri;
		924	if (items > 0)
		925	{
		926	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		927	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		928	next_pri = pri;
		929	}
		930	OUTPUT:
		931	RETVAL
		932
		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;
1207		940
1208	void	941	void
1209	flush ()	942	flush ()
1210	PROTOTYPE:	943	PROTOTYPE:
1211	CODE:	944	CODE:
1212	while (nreqs)	945	while (eio_nreqs ())
1213	{	946	{
1214	poll_wait ();	947	poll_wait ();
1215	poll_cb ();	948	poll_cb ();
1216	}	949	}
1217		950
1218	void	951	int
1219	poll()	952	poll()
1220	PROTOTYPE:	953	PROTOTYPE:
1221	CODE:	954	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	955	poll_wait ();
1225	poll_cb ();	956	RETVAL = poll_cb ();
1226	}	957	OUTPUT:
		958	RETVAL
1227		959
1228	int	960	int
1229	poll_fileno()	961	poll_fileno()
1230	PROTOTYPE:	962	PROTOTYPE:
1231	CODE:	963	CODE:
…		…
1243		975
1244	void	976	void
1245	poll_wait()	977	poll_wait()
1246	PROTOTYPE:	978	PROTOTYPE:
1247	CODE:	979	CODE:
1248	if (nreqs)
1249	poll_wait ();	980	poll_wait ();
1250		981
1251	int	982	int
1252	nreqs()	983	nreqs()
1253	PROTOTYPE:	984	PROTOTYPE:
1254	CODE:	985	CODE:
1255	RETVAL = nreqs;	986	RETVAL = eio_nreqs ();
1256	OUTPUT:	987	OUTPUT:
1257	RETVAL	988	RETVAL
1258		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
1259	PROTOTYPES: DISABLE	1019	PROTOTYPES: DISABLE
1260		1020
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1021	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262		1022
1263	void	1023	void
1264	cancel (aio_req_ornot req)	1024	cancel (aio_req_ornot req)
1265	PROTOTYPE:
1266	CODE:	1025	CODE:
1267	req_cancel (req);	1026	eio_cancel (req);
		1027
		1028	void
		1029	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1030	CODE:
		1031	SvREFCNT_dec (req->callback);
		1032	req->callback = newSVsv (callback);
1268		1033
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1034	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1035
1271	void	1036	void
1272	add (aio_req grp, ...)	1037	add (aio_req grp, ...)
1273	PPCODE:	1038	PPCODE:
1274	{	1039	{
1275	int i;	1040	int i;
1276		1041
1277	if (grp->fd == 2)	1042	if (grp->int1 == 2)
1278	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");
1279		1044
1280	for (i = 1; i < items; ++i )	1045	for (i = 1; i < items; ++i )
1281	{	1046	{
		1047	aio_req req;
		1048
1282	if (GIMME_V != G_VOID)	1049	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1050	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1051
1285	aio_req req = SvAIO_REQ (ST (i));	1052	req = SvAIO_REQ (ST (i));
1286		1053
1287	if (req)	1054	if (req)
1288	{	1055	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	}	1056	}
1300	}
1301	}	1057	}
		1058
		1059	void
		1060	cancel_subs (aio_req_ornot req)
		1061	CODE:
		1062	req_cancel_subs (req);
1302		1063
1303	void	1064	void
1304	result (aio_req grp, ...)	1065	result (aio_req grp, ...)
1305	CODE:	1066	CODE:
1306	{	1067	{
1307	int i;	1068	int i;
1308	AV *av = newAV ();	1069	AV *av;
1309		1070
		1071	grp->errorno = errno;
		1072
		1073	av = newAV ();
		1074
1310	for (i = 1; i < items; ++i )	1075	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));	1076	av_push (av, newSVsv (ST (i)));
1312		1077
1313	SvREFCNT_dec (grp->data);	1078	SvREFCNT_dec (grp->sv1);
1314	grp->data = (SV *)av;	1079	grp->sv1 = (SV *)av;
1315	}	1080	}
1316		1081
1317	void	1082	void
		1083	errno (aio_req grp, int errorno = errno)
		1084	CODE:
		1085	grp->errorno = errorno;
		1086
		1087	void
1318	feeder_limit (aio_req grp, int limit)	1088	limit (aio_req grp, int limit)
1319	CODE:	1089	CODE:
1320	grp->fd2 = limit;	1090	eio_grp_limit (grp, limit);
1321	aio_grp_feed (grp);
1322		1091
1323	void	1092	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1093	feed (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:	1094	CODE:
1326	{	1095	{
1327	SvREFCNT_dec (grp->fh2);	1096	SvREFCNT_dec (grp->sv2);
1328	grp->fh2 = newSVsv (callback);	1097	grp->sv2 = newSVsv (callback);
1329		1098
1330	if (grp->fd2 <= 0)	1099	if (grp->int2 <= 0)
1331	grp->fd2 = 2;	1100	grp->int2 = 2;
1332		1101
1333	aio_grp_feed (grp);	1102	eio_grp_limit (grp, grp->int2);
1334	}	1103	}
1335		1104

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