Hello,
I am using uclicb 0.9.29 on Arm built with buildroot
I want to use monotonic clock support and to test that that
functionality exists I try the following bit of code:
long x = sysconf(_SC_MONOTONIC_CLOCK);
bool hasMonotonic = x >= 200112L;
However when I run this sysconf return -1.
Looking at the code it appears this happens if __NR_clock_getres is not
defined. However looking at the kernel headers I think it is defined as:
#define __NR_clock_getres (__NR_SYSCALL_BASE+264)
in unistd.h
If I run this code:
if (syscall(__NR_clock_getres, CLOCK_MONOTONIC, NULL) < 0)
{
printf("syscall failed %d", errno);
return 0;
}
if (clock_getres(CLOCK_MONOTONIC, NULL) < 0)
{
printf("clock_getres failed %d", errno);
return 0;
}
Then both calls succeed so the kernel supports this.
From this I assume that uclibc is compiled as if __NR_clock_getres is
not defined. Does that sound right?
I have looked for configuration options and can not find any for this.
How can I enable this?
Thanks,
Will.
--
------------------------------------------------------------------------
Will Wagner [EMAIL PROTECTED]
Senior Project Engineer Office Tel: +44 (0)20 7371 2032
Carallon Ltd, Studio G20, Shepherds Building, Rockley Rd, London W14 0DA
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