diff options
Diffstat (limited to 'libc/sysdeps/linux/common/clock_getres.c')
| -rw-r--r-- | libc/sysdeps/linux/common/clock_getres.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/clock_getres.c b/libc/sysdeps/linux/common/clock_getres.c new file mode 100644 index 000000000..0ae2bb07d --- /dev/null +++ b/libc/sysdeps/linux/common/clock_getres.c @@ -0,0 +1,51 @@ +/* + * clock_getres() for uClibc + * + * Copyright (C) 2005 by Peter Kjellerstedt <pkj@axis.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Library General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program 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 Library General Public License + * for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#define _GNU_SOURCE +#include "syscalls.h" +#include <time.h> +#include <unistd.h> + +#ifdef __NR_clock_getres +_syscall2(int, clock_getres, clockid_t, clock_id, struct timespec*, res); +#else +int clock_getres(clockid_t clock_id, struct timespec* res) +{ + long clk_tck; + int retval = -1; + + switch (clock_id) { + case CLOCK_REALTIME: + if ((clk_tck = sysconf(_SC_CLK_TCK)) < 0) + clk_tck = 100; + res->tv_sec = 0; + res->tv_nsec = 1000000000 / clk_tck; + retval = 0; + break; + + default: + errno = EINVAL; + break; + } + + return retval; +} +#endif |