blob: bea015d2c0133c2ca5f3959cabb72558e5b09bb4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* Copyright (C) 2001, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <time.h>
#include "internals.h"
#include "spinlock.h"
#if HP_TIMING_AVAIL
int
__pthread_clock_settime (clockid_t clock_id, hp_timing_t offset)
{
pthread_descr self = thread_self ();
pthread_t thread = ((unsigned int) clock_id) >> CLOCK_IDFIELD_SIZE;
const unsigned int mask = ~0U >> CLOCK_IDFIELD_SIZE;
if (thread == 0 || (THREAD_GETMEM (self, p_tid) & mask) == thread)
/* Our own clock. */
THREAD_SETMEM (self, p_cpuclock_offset, offset);
else
{
pthread_descr th;
pthread_handle handle = thread_handle (thread);
__pthread_lock (&handle->h_lock, NULL);
th = handle->h_descr;
if (th == NULL || (th->p_tid & mask) != thread || th->p_terminated)
{
__pthread_unlock (&handle->h_lock);
__set_errno (EINVAL);
return -1;
}
th->p_cpuclock_offset = offset;
__pthread_unlock (&handle->h_lock);
}
return 0;
}
#endif
|
