On 03/15/2011 02:16 PM, Tristan Gingold wrote:
Some POSIX OSes (such as Darwin) doesn't have clock_gettime. This patch
falls back on gettimeofday if clock_gettime is not available.
This may be okay as a stopgap measure, but any sane porting target for
QEMU should have a monotonic clock. In fact, Darwin has it.
http://www.wand.net.nz/~smr26/wordpress/2009/01/19/monotonic-time-in-mac-os-x/
hints that code such as the following should work and return nanoseconds:
#import <mach/mach_time.h>
uint64_t t = mach_absolute_time();
static mach_timebase_info_data_t info;
if (info.denom == 0) {
mach_timebase_info(&info);
}
return muldiv64(t, info.numer, info.denom);
Paolo
