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;