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Diffstat (limited to 'libc/sysdeps/linux/common/clock_getres.c')
-rw-r--r--libc/sysdeps/linux/common/clock_getres.c51
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