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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 2008 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"
17
18	#include <pthread.h>
19
20	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
21	#include <errno.h>	11	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	12	#include <sys/types.h>
25	#include <sys/stat.h>	13	#include <sys/stat.h>
26	#include <limits.h>	14	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	15	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	16	#include <sched.h>
31		17
32	#if HAVE_SENDFILE	18	#ifdef _WIN32
33	# if __linux	19
34	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __freebsd	21	# undef malloc
36	# include <sys/socket.h>	22	# undef free
37	# include <sys/uio.h>	23
38	# elif __hpux	24	// perl overrides all those nice win32 functions
39	# include <sys/socket.h>	25	# undef open
40	# elif __solaris /* not yet */	26	# undef read
41	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
42	# else	56	#else
43	# error sendfile support requested but not available	57
44	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
45	#endif	65	#endif
46		66
47	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
48	#ifndef NAME_MAX	68
49	# define NAME_MAX 4096	69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
50	#endif	74	#endif
51		75
52	#ifndef PTHREAD_STACK_MIN	76	static HV *stash;
53	/* care for broken platforms, e.g. windows */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
54	# define PTHREAD_STACK_MIN 16384
55	#endif
56
57	#if __ia64
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif
64
65	/* buffer size for various temporary buffers */
66	#define AIO_BUFSIZE 65536
67
68	#define dBUF \
69	char *aio_buf; \
70	LOCK (wrklock); \
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75
76	enum {
77	REQ_QUIT,
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};
89		78
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
92		81
93	typedef struct aio_cb	82	#define EIO_COMMON \
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;	83	SV *callback; \
98	SV *fh, *fh2;	84	SV *sv1, *sv2; \
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;	85	STRLEN stroffset; \
106	int type;	86	SV *self
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110		87
111	unsigned char flags;	88	#include "libeio/eio.h"
112	unsigned char pri;
113		89
114	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
116	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
117		96
118	enum {	97	enum {
119	FLAG_CANCELLED = 0x01,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
120	};	99	};
121		100
		101	#include "libeio/eio.c"
		102
122	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
124		105
125	enum {	106	static SV *on_next_submit;
126	PRI_MIN = -4,
127	PRI_MAX = 4,
128
129	DEFAULT_PRI = 0,
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;	107	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
		108	static int max_outstanding;
135		109
136	static int started, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
137	static volatile int nreqs;
138	static int respipe [2];
139		111
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	112	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	113	static void req_cancel (aio_req req);
		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
251		128
252	/* must be called at most once */	129	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
254	{	131	{
255	if (!req->self)	132	if (!req->self)
…		…
273	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	151	}
275		152
276	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
277	{	154	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
279	{	156	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	157	dSP;
285		158
286	ENTER;	159	ENTER;
287	SAVETMPS;	160	SAVETMPS;
288	PUSHMARK (SP);	161	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
290	PUTBACK;	163	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	165	SPAGAIN;
293	FREETMPS;	166	FREETMPS;
294	LEAVE;	167	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	168	}
305	}	169	}
306		170
307	static void aio_grp_dec (aio_req grp)	171	static void req_submit (eio_req *req)
308	{	172	{
309	--grp->length;	173	eio_submit (req);
310		174
311	/* call feeder, if applicable */	175	if (on_next_submit)
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	176	{
317	req_invoke (grp);	177	dSP;
318	req_free (grp);	178	SV *cb = sv_2mortal (on_next_submit);
		179
		180	on_next_submit = 0;
		181
		182	PUSHMARK (SP);
		183	PUTBACK;
		184	call_sv (cb, G_DISCARD | G_EVAL);
319	}	185	}
320	}	186	}
321		187
322	static void poll_wait ()	188	static int req_invoke (eio_req *req)
323	{	189	{
324	fd_set rfd;	190	dSP;
325		191
326	while (nreqs)	192	if (req->flags & FLAG_SV2_RO_OFF)
		193	SvREADONLY_off (req->sv2);
		194
		195	if (!EIO_CANCELLED (req) && SvOK (req->callback))
327	{	196	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;
350
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
352	{
353	errno = req->errorno;
354
355	ENTER;	197	ENTER;
356	SAVETMPS;	198	SAVETMPS;
357	PUSHMARK (SP);	199	PUSHMARK (SP);
358	EXTEND (SP, 1);	200	EXTEND (SP, 1);
359		201
360	switch (req->type)	202	switch (req->type)
361	{	203	{
362	case REQ_READDIR:	204	case EIO_READDIR:
363	{	205	{
364	SV *rv = &PL_sv_undef;	206	SV *rv = &PL_sv_undef;
365		207
366	if (req->result >= 0)	208	if (req->result >= 0)
367	{	209	{
368	int i;	210	int i;
369	char *buf = req->data2ptr;	211	char *buf = req->ptr2;
370	AV *av = newAV ();	212	AV *av = newAV ();
371		213
372	av_extend (av, req->result - 1);	214	av_extend (av, req->result - 1);
373		215
374	for (i = 0; i < req->result; ++i)	216	for (i = 0; i < req->result; ++i)
…		…
384		226
385	PUSHs (rv);	227	PUSHs (rv);
386	}	228	}
387	break;	229	break;
388		230
389	case REQ_OPEN:	231	case EIO_OPEN:
390	{	232	{
391	/* convert fd to fh */	233	/* convert fd to fh */
392	SV *fh;	234	SV *fh = &PL_sv_undef;
393		235
394	PUSHs (sv_2mortal (newSViv (req->result)));	236	if (req->result >= 0)
395	PUTBACK;	237	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	238	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	239	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		240	char sym [64];
		241	int symlen;
		242
		243	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		244	gv_init (gv, stash, sym, symlen, 0);
398		245
399	fh = SvREFCNT_inc (POPs);	246	symlen = snprintf (
		247	sym,
		248	sizeof (sym),
		249	"%s&=%d",
		250	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		251	req->result
		252	);
400		253
		254	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		255	fh = (SV *)gv;
		256	}
		257
401	PUSHMARK (SP);	258	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	259	}
404	break;	260	break;
405		261
406	case REQ_GROUP:	262	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	263	req->int1 = 2; /* mark group as finished */
408		264
409	if (req->data)	265	if (req->sv1)
410	{	266	{
411	int i;	267	int i;
412	AV *av = (AV *)req->data;	268	AV *av = (AV *)req->sv1;
413		269
414	EXTEND (SP, AvFILL (av) + 1);	270	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	271	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	272	PUSHs (*av_fetch (av, i, 0));
417	}	273	}
418	break;	274	break;
419		275
420	case REQ_NOP:	276	case EIO_NOP:
421	case REQ_BUSY:	277	case EIO_BUSY:
422	break;	278	break;
		279
		280	case EIO_READLINK:
		281	if (req->result > 0)
		282	{
		283	SvCUR_set (req->sv2, req->result);
		284	*SvEND (req->sv2) = 0;
		285	PUSHs (req->sv2);
		286	}
		287	break;
		288
		289	case EIO_STAT:
		290	case EIO_LSTAT:
		291	case EIO_FSTAT:
		292	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		293	PL_laststatval = req->result;
		294	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		295	PUSHs (sv_2mortal (newSViv (req->result)));
		296	break;
		297
		298	case EIO_READ:
		299	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		300	*SvEND (req->sv2) = 0;
		301	PUSHs (sv_2mortal (newSViv (req->result)));
		302	break;
		303
		304	case EIO_DUP2:
		305	if (req->result > 0)
		306	req->result = 0;
		307	/* FALLTHROUGH */
423		308
424	default:	309	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	310	PUSHs (sv_2mortal (newSViv (req->result)));
426	break;	311	break;
427	}	312	}
428		313
		314	errno = req->errorno;
429		315
430	PUTBACK;	316	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	317	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	318	SPAGAIN;
433		319
434	FREETMPS;	320	FREETMPS;
435	LEAVE;	321	LEAVE;
		322
		323	PUTBACK;
436	}	324	}
437		325
438	if (req->grp)	326	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	327	}
458		328
459	static void req_free (aio_req req)	329	static void req_destroy (aio_req req)
460	{	330	{
461	if (req->self)	331	if (req->self)
462	{	332	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	333	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	334	SvREFCNT_dec (req->self);
465	}	335	}
466		336
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	337	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	338	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	339	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		340
476	Safefree (req);	341	Safefree (req);
477	}	342	}
478		343
479	static void req_cancel_subs (aio_req grp)	344	static void req_cancel_subs (aio_req grp)
480	{	345	{
481	aio_req sub;	346	aio_req sub;
482		347
483	if (grp->type != REQ_GROUP)	348	if (grp->type != EIO_GROUP)
484	return;	349	return;
485		350
486	SvREFCNT_dec (grp->fh2);	351	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	352	grp->sv2 = 0;
488		353
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	354	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	355	}
492		356
493	static void req_cancel (aio_req req)	357	#ifdef USE_SOCKETS_AS_HANDLES
494	{	358	# define TO_SOCKET(x) (win32_get_osfhandle (x))
495	req->flags |= FLAG_CANCELLED;	359	#else
		360	# define TO_SOCKET(x) (x)
		361	#endif
496		362
497	req_cancel_subs (req);	363	static void
498	}	364	create_respipe (void)
499
500	static int poll_cb ()
501	{	365	{
502	dSP;	366	int old_readfd = respipe [0];
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506		367
507	for (;;)	368	if (respipe [1] >= 0)
		369	respipe_close (TO_SOCKET (respipe [1]));
		370
		371	#ifdef _WIN32
		372	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		373	#else
		374	if (pipe (respipe))
		375	#endif
		376	croak ("unable to initialize result pipe");
		377
		378	if (old_readfd >= 0)
508	{	379	{
509	LOCK (reslock);	380	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
510	req = reqq_shift (&res_queue);	381	croak ("unable to initialize result pipe(2)");
511		382
512	if (req)	383	respipe_close (respipe [0]);
513	{	384	respipe [0] = old_readfd;
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;
527
528	--nreqs;
529
530	if (req->type == REQ_QUIT)
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	385	}
559		386
560	return count;	387	#ifdef _WIN32
561	}	388	int arg = 1;
		389	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		390	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		391	#else
		392	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		393	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		394	#endif
		395	croak ("unable to initialize result pipe(3)");
562		396
563	static void *aio_proc(void *arg);	397	respipe_osf [0] = TO_SOCKET (respipe [0]);
		398	respipe_osf [1] = TO_SOCKET (respipe [1]);
		399	}
564		400
565	static void start_thread (void)	401	static void poll_wait (void)
566	{	402	{
567	sigset_t fullsigset, oldsigset;	403	fd_set rfd;
568	pthread_attr_t attr;
569		404
570	worker *wrk = calloc (1, sizeof (worker));	405	while (eio_nreqs ())
571
572	if (!wrk)
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{	406	{
586	wrk->prev = &wrk_first;	407	int size;
587	wrk->next = wrk_first.next;	408
588	wrk_first.next->prev = wrk;	409	X_LOCK (reslock);
589	wrk_first.next = wrk;	410	size = res_queue.size;
590	started++;	411	X_UNLOCK (reslock);
		412
		413	if (size)
		414	return;
		415
		416	maybe_start_thread ();
		417
		418	FD_ZERO (&rfd);
		419	FD_SET (respipe [0], &rfd);
		420
		421	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
591	}	422	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}	423	}
598		424
599	static void req_send (aio_req req)	425	static int poll_cb (void)
600	{	426	{
601	while (started < wanted && nreqs >= started)	427	int res;
602	start_thread ();
603		428
604	++nreqs;	429	do
605
606	LOCK (reqlock);
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	req_send (req);
622	}
623
624	static void min_parallel (int nthreads)
625	{
626	if (wanted < nthreads)
627	wanted = nthreads;
628	}
629
630	static void max_parallel (int nthreads)
631	{
632	int cur = started;
633
634	if (wanted > nthreads)
635	wanted = nthreads;
636
637	while (cur > wanted)
638	{	430	{
639	end_thread ();	431	res = eio_poll ();
640	cur--;	432
		433	if (res > 0)
		434	croak (0);
641	}	435	}
642		436	while (max_outstanding && max_outstanding <= eio_nreqs ());
643	while (started > wanted)
644	{
645	poll_wait ();
646	poll_cb ();
647	}
648	}
649
650	static void create_pipe ()
651	{
652	if (pipe (respipe))
653	croak ("unable to initialize result pipe");
654
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
659	croak ("cannot set result pipe to nonblocking mode");
660	}
661
662	/*****************************************************************************/
663	/* work around various missing functions */
664
665	#if !HAVE_PREADWRITE
666	# define pread aio_pread
667	# define pwrite aio_pwrite
668
669	/*
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
677	{
678	ssize_t res;
679	off_t ooffset;
680
681	LOCK (preadwritelock);
682	ooffset = lseek (fd, 0, SEEK_CUR);
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687		437
688	return res;	438	return res;
689	}	439	}
690		440
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}
787
788	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);
790
791	# elif __solaris
792	{
793	struct sendfilevec vec;
794	size_t sbytes;
795
796	vec.sfv_fd = ifd;
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800
801	res = sendfilev (ofd, &vec, 1, &sbytes);
802
803	if (res < 0 && sbytes)
804	res = sbytes;
805	}
806
807	# endif
808	#else
809	res = -1;
810	errno = ENOSYS;
811	#endif
812
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{
834	if (cnt && !res) res = -1;
835	break;
836	}
837
838	cnt = write (ofd, aio_buf, cnt);
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)	441	static void atfork_child (void)
1040	{	442	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();	443	create_respipe ();
1066
1067	atfork_parent ();
1068	}	444	}
1069		445
1070	#define dREQ \	446	#define dREQ \
1071	aio_req req; \	447	aio_req req; \
1072	int req_pri = next_pri; \	448	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	449	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1074	\	450	\
1075	if (SvOK (callback) && !SvROK (callback)) \	451	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \	452	croak ("callback must be undef or of reference type"); \
1077	\	453	\
1078	Newz (0, req, 1, aio_cb); \	454	Newz (0, req, 1, eio_req); \
1079	if (!req) \	455	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	456	croak ("out of memory during eio_req allocation"); \
1081	\	457	\
1082	req->callback = newSVsv (callback); \	458	req->callback = newSVsv (callback); \
1083	req->pri = req_pri	459	req->pri = req_pri
1084		460
1085	#define REQ_SEND \	461	#define REQ_SEND \
1086	req_send (req); \	462	req_submit (req); \
1087	\	463	\
1088	if (GIMME_V != G_VOID) \	464	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	465	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		466
1091	MODULE = IO::AIO PACKAGE = IO::AIO	467	MODULE = IO::AIO PACKAGE = IO::AIO
1092		468
1093	PROTOTYPES: ENABLE	469	PROTOTYPES: ENABLE
1094		470
1095	BOOT:	471	BOOT:
1096	{	472	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	473	stash = gv_stashpv ("IO::AIO", 1);
		474
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	475	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	476	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	477	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		478	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		479	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		480	#ifdef _WIN32
		481	X_MUTEX_CHECK (wrklock);
		482	X_MUTEX_CHECK (reslock);
		483	X_MUTEX_CHECK (reqlock);
		484	X_MUTEX_CHECK (reqwait);
		485	X_MUTEX_CHECK (preadwritelock);
		486	X_MUTEX_CHECK (readdirlock);
1101		487
1102	create_pipe ();	488	X_COND_CHECK (reqwait);
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	489	#else
1104	}	490	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		491	#endif
1105		492
		493	create_respipe ();
		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
1106	void	502	void
1107	min_parallel (nthreads)	503	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	504	PROTOTYPE: $
		505	CODE:
		506	eio_set_max_poll_reqs (nreqs);
1110		507
1111	void	508	void
1112	max_parallel (nthreads)	509	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	510	PROTOTYPE: $
		511	CODE:
		512	eio_set_max_poll_time (nseconds);
1115		513
1116	void	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:
		536	max_outstanding = maxreqs;
		537
		538	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	539	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	540	PROTOTYPE: $$$;$
1123	PPCODE:	541	PPCODE:
1124	{	542	{
1125	dREQ;	543	dREQ;
1126		544
1127	req->type = REQ_OPEN;	545	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	546	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	547	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	548	req->int1 = flags;
1131	req->mode = mode;	549	req->int2 = mode;
1132		550
1133	REQ_SEND;	551	REQ_SEND;
1134	}	552	}
1135		553
1136	void	554	void
1137	aio_close (fh,callback=&PL_sv_undef)	555	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	556	PROTOTYPE: $;$
1141	ALIAS:	557	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	558	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	560	PPCODE:
1146	{	561	{
1147	dREQ;	562	dREQ;
1148		563
1149	req->type = ix;	564	req->type = ix;
1150	req->fh = newSVsv (fh);	565	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		567
1153	REQ_SEND (req);	568	REQ_SEND (req);
1154	}	569	}
1155		570
1156	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
1157	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)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	601	ALIAS:
1165	aio_read = REQ_READ	602	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	603	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	604	PROTOTYPE: $$$$$;$
1168	PPCODE:	605	PPCODE:
1169	{	606	{
1170	aio_req req;
1171	STRLEN svlen;	607	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	608	char *svptr = SvPVbyte (data, svlen);
		609	UV len = SvUV (length);
1173		610
1174	SvUPGRADE (data, SVt_PV);	611	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	612	SvPOK_on (data);
1176		613
1177	if (dataoffset < 0)	614	if (dataoffset < 0)
1178	dataoffset += svlen;	615	dataoffset += svlen;
1179		616
1180	if (dataoffset < 0 || dataoffset > svlen)	617	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	618	croak ("dataoffset outside of data scalar");
1182		619
1183	if (ix == REQ_WRITE)	620	if (ix == EIO_WRITE)
1184	{	621	{
1185	/* write: check length and adjust. */	622	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	623	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	624	len = svlen - dataoffset;
1188	}	625	}
1189	else	626	else
1190	{	627	{
1191	/* read: grow scalar as necessary */	628	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	629	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	630	}
1194		631
1195	if (length < 0)	632	if (len < 0)
1196	croak ("length must not be negative");	633	croak ("length must not be negative");
1197		634
1198	{	635	{
1199	dREQ;	636	dREQ;
1200		637
1201	req->type = ix;	638	req->type = ix;
1202	req->fh = newSVsv (fh);	639	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	640	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	641	: IoOFP (sv_2io (fh)));
		642	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	643	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	644	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	645	req->ptr2 = (char *)svptr + dataoffset;
		646	req->stroffset = dataoffset;
1209		647
1210	if (!SvREADONLY (data))	648	if (!SvREADONLY (data))
1211	{	649	{
1212	SvREADONLY_on (data);	650	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	651	req->flags |= FLAG_SV2_RO_OFF;
1214	}	652	}
1215		653
1216	REQ_SEND;	654	REQ_SEND;
1217	}	655	}
1218	}	656	}
1219		657
1220	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	data = newSV (NAME_MAX);
		667	SvPOK_on (data);
		668
		669	req->type = EIO_READLINK;
		670	req->sv1 = newSVsv (path);
		671	req->ptr1 = SvPVbyte_nolen (req->sv1);
		672	req->sv2 = data;
		673	req->ptr2 = SvPVbyte_nolen (data);
		674
		675	REQ_SEND;
		676	}
		677
		678	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	679	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	680	PROTOTYPE: $$$$;$
1228	PPCODE:	681	PPCODE:
1229	{	682	{
1230	dREQ;	683	dREQ;
1231		684
1232	req->type = REQ_SENDFILE;	685	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	686	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	687	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	688	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	689	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	690	req->offs = SvVAL64 (in_offset);
1238	req->length = length;	691	req->size = length;
1239		692
1240	REQ_SEND;	693	REQ_SEND;
1241	}	694	}
1242		695
1243	void	696	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	697	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	698	PROTOTYPE: $$$;$
1250	PPCODE:	699	PPCODE:
1251	{	700	{
1252	dREQ;	701	dREQ;
1253		702
1254	req->type = REQ_READAHEAD;	703	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	704	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	705	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	706	req->offs = SvVAL64 (offset);
1258	req->length = length;	707	req->size = length;
1259		708
1260	REQ_SEND;	709	REQ_SEND;
1261	}	710	}
1262		711
1263	void	712	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	713	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	714	ALIAS:
1268	aio_stat = REQ_STAT	715	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	716	aio_lstat = EIO_LSTAT
1270	PPCODE:	717	PPCODE:
1271	{	718	{
1272	dREQ;	719	dREQ;
1273		720
1274	New (0, req->statdata, 1, Stat_t);	721	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1275	if (!req->statdata)	722	if (!req->ptr2)
1276	{	723	{
1277	req_free (req);	724	req_destroy (req);
1278	croak ("out of memory during aio_req->statdata allocation");	725	croak ("out of memory during aio_stat statdata allocation");
1279	}	726	}
		727
		728	req->flags |= EIO_FLAG_PTR2_FREE;
		729	req->sv1 = newSVsv (fh_or_path);
1280		730
1281	if (SvPOK (fh_or_path))	731	if (SvPOK (fh_or_path))
1282	{	732	{
1283	req->type = ix;	733	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	734	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	735	}
1287	else	736	else
1288	{	737	{
1289	req->type = REQ_FSTAT;	738	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	740	}
1293		741
1294	REQ_SEND;	742	REQ_SEND;
1295	}	743	}
1296		744
1297	void	745	void
		746	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		747	PPCODE:
		748	{
		749	dREQ;
		750
		751	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		752	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		753	req->sv1 = newSVsv (fh_or_path);
		754
		755	if (SvPOK (fh_or_path))
		756	{
		757	req->type = EIO_UTIME;
		758	req->ptr1 = SvPVbyte_nolen (req->sv1);
		759	}
		760	else
		761	{
		762	req->type = EIO_FUTIME;
		763	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		764	}
		765
		766	REQ_SEND;
		767	}
		768
		769	void
		770	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		771	PPCODE:
		772	{
		773	dREQ;
		774
		775	req->sv1 = newSVsv (fh_or_path);
		776	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		777
		778	if (SvPOK (fh_or_path))
		779	{
		780	req->type = EIO_TRUNCATE;
		781	req->ptr1 = SvPVbyte_nolen (req->sv1);
		782	}
		783	else
		784	{
		785	req->type = EIO_FTRUNCATE;
		786	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		787	}
		788
		789	REQ_SEND;
		790	}
		791
		792	void
		793	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		794	ALIAS:
		795	aio_chmod = EIO_CHMOD
		796	aio_fchmod = EIO_FCHMOD
		797	aio_mkdir = EIO_MKDIR
		798	PPCODE:
		799	{
		800	dREQ;
		801
		802	req->type = ix;
		803	req->int2 = mode;
		804	req->sv1 = newSVsv (fh_or_path);
		805
		806	if (ix == EIO_FCHMOD)
		807	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		808	else
		809	req->ptr1 = SvPVbyte_nolen (req->sv1);
		810
		811	REQ_SEND;
		812	}
		813
		814	void
		815	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		816	PPCODE:
		817	{
		818	dREQ;
		819
		820	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		821	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		822	req->sv1 = newSVsv (fh_or_path);
		823
		824	if (SvPOK (fh_or_path))
		825	{
		826	req->type = EIO_CHOWN;
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828	}
		829	else
		830	{
		831	req->type = EIO_FCHOWN;
		832	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		833	}
		834
		835	REQ_SEND;
		836	}
		837
		838	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	839	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	840	ALIAS:
1302	aio_unlink = REQ_UNLINK	841	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	842	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	843	aio_readdir = EIO_READDIR
1305	PPCODE:	844	PPCODE:
1306	{	845	{
1307	dREQ;	846	dREQ;
1308		847
1309	req->type = ix;	848	req->type = ix;
1310	req->data = newSVsv (pathname);	849	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851
		852	REQ_SEND;
		853	}
		854
		855	void
		856	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		857	ALIAS:
		858	aio_link = EIO_LINK
		859	aio_symlink = EIO_SYMLINK
		860	aio_rename = EIO_RENAME
		861	PPCODE:
		862	{
		863	dREQ;
		864
		865	req->type = ix;
		866	req->sv1 = newSVsv (oldpath);
		867	req->ptr1 = SvPVbyte_nolen (req->sv1);
		868	req->sv2 = newSVsv (newpath);
		869	req->ptr2 = SvPVbyte_nolen (req->sv2);
1312		870
1313	REQ_SEND;	871	REQ_SEND;
1314	}	872	}
1315		873
1316	void	874	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	875	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:
1322	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME
1325	PPCODE:	876	PPCODE:
1326	{	877	{
1327	dREQ;	878	dREQ;
1328		879
1329	req->type = ix;	880	req->type = EIO_MKNOD;
1330	req->fh = newSVsv (oldpath);	881	req->sv1 = newSVsv (pathname);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	882	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	883	req->int2 = (mode_t)mode;
1333	req->dataptr = SvPVbyte_nolen (req->data);	884	req->offs = dev;
1334		885
1335	REQ_SEND;	886	REQ_SEND;
1336	}	887	}
1337		888
1338	void	889	void
1339	aio_busy (delay,callback=&PL_sv_undef)	890	aio_busy (double delay, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	891	PPCODE:
1343	{	892	{
1344	dREQ;	893	dREQ;
1345		894
1346	req->type = REQ_BUSY;	895	req->type = EIO_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	896	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		897
1350	REQ_SEND;	898	REQ_SEND;
1351	}	899	}
1352		900
1353	void	901	void
1354	aio_group (callback=&PL_sv_undef)	902	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	903	PROTOTYPE: ;$
1357	PPCODE:	904	PPCODE:
1358	{	905	{
1359	dREQ;	906	dREQ;
1360		907
1361	req->type = REQ_GROUP;	908	req->type = EIO_GROUP;
		909
1362	req_send (req);	910	eio_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	911	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	912	}
1366		913
1367	void	914	void
1368	aio_nop (callback=&PL_sv_undef)	915	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	916	ALIAS:
		917	aio_nop = EIO_NOP
		918	aio_sync = EIO_SYNC
1370	PPCODE:	919	PPCODE:
1371	{	920	{
1372	dREQ;	921	dREQ;
1373		922
1374	req->type = REQ_NOP;	923	req->type = ix;
1375		924
1376	REQ_SEND;	925	REQ_SEND;
1377	}	926	}
1378		927
1379	void	928	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	929	aioreq_pri (int pri = 0)
1381	CODE:	930	PROTOTYPE: ;$
		931	CODE:
		932	RETVAL = next_pri - EIO_PRI_BIAS;
		933	if (items > 0)
		934	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	935	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	936	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	937	next_pri = pri + EIO_PRI_BIAS;
		938	}
		939	OUTPUT:
		940	RETVAL
1385		941
1386	void	942	void
1387	aioreq_nice (int nice = 0)	943	aioreq_nice (int nice = 0)
1388	CODE:	944	CODE:
1389	nice = next_pri - nice;	945	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	946	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	947	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	948	next_pri = nice + EIO_PRI_BIAS;
1393		949
1394	void	950	void
1395	flush ()	951	flush ()
1396	PROTOTYPE:	952	PROTOTYPE:
1397	CODE:	953	CODE:
1398	while (nreqs)	954	while (eio_nreqs ())
1399	{	955	{
1400	poll_wait ();	956	poll_wait ();
1401	poll_cb ();	957	poll_cb ();
1402	}	958	}
1403		959
1404	void	960	int
1405	poll()	961	poll()
1406	PROTOTYPE:	962	PROTOTYPE:
1407	CODE:	963	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	964	poll_wait ();
1411	poll_cb ();	965	RETVAL = poll_cb ();
1412	}	966	OUTPUT:
		967	RETVAL
1413		968
1414	int	969	int
1415	poll_fileno()	970	poll_fileno()
1416	PROTOTYPE:	971	PROTOTYPE:
1417	CODE:	972	CODE:
…		…
1429		984
1430	void	985	void
1431	poll_wait()	986	poll_wait()
1432	PROTOTYPE:	987	PROTOTYPE:
1433	CODE:	988	CODE:
1434	if (nreqs)
1435	poll_wait ();	989	poll_wait ();
1436		990
1437	int	991	int
1438	nreqs()	992	nreqs()
1439	PROTOTYPE:	993	PROTOTYPE:
1440	CODE:	994	CODE:
1441	RETVAL = nreqs;	995	RETVAL = eio_nreqs ();
1442	OUTPUT:	996	OUTPUT:
1443	RETVAL	997	RETVAL
1444		998
		999	int
		1000	nready()
		1001	PROTOTYPE:
		1002	CODE:
		1003	RETVAL = eio_nready ();
		1004	OUTPUT:
		1005	RETVAL
		1006
		1007	int
		1008	npending()
		1009	PROTOTYPE:
		1010	CODE:
		1011	RETVAL = eio_npending ();
		1012	OUTPUT:
		1013	RETVAL
		1014
		1015	int
		1016	nthreads()
		1017	PROTOTYPE:
		1018	CODE:
		1019	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1020	RETVAL = started;
		1021	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1022	OUTPUT:
		1023	RETVAL
		1024
		1025	void _on_next_submit (SV *cb)
		1026	CODE:
		1027	SvREFCNT_dec (on_next_submit);
		1028	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1029
1445	PROTOTYPES: DISABLE	1030	PROTOTYPES: DISABLE
1446		1031
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1032	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1033
1449	void	1034	void
1450	cancel (aio_req_ornot req)	1035	cancel (aio_req_ornot req)
1451	CODE:	1036	CODE:
1452	req_cancel (req);	1037	eio_cancel (req);
1453		1038
1454	void	1039	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1040	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1041	CODE:
1457	SvREFCNT_dec (req->callback);	1042	SvREFCNT_dec (req->callback);
…		…
1462	void	1047	void
1463	add (aio_req grp, ...)	1048	add (aio_req grp, ...)
1464	PPCODE:	1049	PPCODE:
1465	{	1050	{
1466	int i;	1051	int i;
1467	aio_req req;
1468		1052
1469	if (grp->fd == 2)	1053	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1054	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1055
1472	for (i = 1; i < items; ++i )	1056	for (i = 1; i < items; ++i )
1473	{	1057	{
		1058	aio_req req;
		1059
1474	if (GIMME_V != G_VOID)	1060	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1061	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1062
1477	req = SvAIO_REQ (ST (i));	1063	req = SvAIO_REQ (ST (i));
1478		1064
1479	if (req)	1065	if (req)
1480	{	1066	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1067	}
1493	}	1068	}
1494		1069
1495	void	1070	void
1496	cancel_subs (aio_req_ornot req)	1071	cancel_subs (aio_req_ornot req)
…		…
1500	void	1075	void
1501	result (aio_req grp, ...)	1076	result (aio_req grp, ...)
1502	CODE:	1077	CODE:
1503	{	1078	{
1504	int i;	1079	int i;
		1080	AV *av;
		1081
		1082	grp->errorno = errno;
		1083
1505	AV *av = newAV ();	1084	av = newAV ();
1506		1085
1507	for (i = 1; i < items; ++i )	1086	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1087	av_push (av, newSVsv (ST (i)));
1509		1088
1510	SvREFCNT_dec (grp->data);	1089	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1090	grp->sv1 = (SV *)av;
1512	}	1091	}
		1092
		1093	void
		1094	errno (aio_req grp, int errorno = errno)
		1095	CODE:
		1096	grp->errorno = errorno;
1513		1097
1514	void	1098	void
1515	limit (aio_req grp, int limit)	1099	limit (aio_req grp, int limit)
1516	CODE:	1100	CODE:
1517	grp->fd2 = limit;	1101	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1102
1520	void	1103	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1104	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1105	CODE:
1523	{	1106	{
1524	SvREFCNT_dec (grp->fh2);	1107	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1108	grp->sv2 = newSVsv (callback);
1526		1109
1527	if (grp->fd2 <= 0)	1110	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1111	grp->int2 = 2;
1529		1112
1530	aio_grp_feed (grp);	1113	eio_grp_limit (grp, grp->int2);
1531	}	1114	}
1532		1115

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