Read the number of high-precision timer ticks in a second.
#include <zircon/syscalls.h>
zx_ticks_t zx_ticks_per_second(void);zx_ticks_per_second() returns the number of high-precision timer ticks in a
second.
This can be used together with zx_ticks_get() to calculate the amount of
time elapsed between two subsequent calls to zx_ticks_get().
This value can vary from boot to boot of a given system. Once booted, this value is guaranteed not to change.
TODO(fxbug.dev/32253)
zx_ticks_per_second() returns the number of high-precision timer ticks in a
second.
zx_ticks_per_second() does not report any error conditions.
zx_ticks_t ticks_per_second = zx_ticks_per_second();
zx_ticks_t ticks_start = zx_ticks_get();
// do some more work
zx_ticks_t ticks_end = zx_ticks_get();
double elapsed_seconds = (ticks_end - ticks_start) / (double)ticks_per_second;