function::cpu_clock_us
名称
function::cpu_clock_us — Number of microseconds on the given cpu's clock
Synopsis
cpu_clock_us:long(cpu:long)
cpu_clock_us:long(cpu:long)
Arguments
- cpu
- Which processor's clock to read
Description
					This function returns the number of microseconds on the given cpu's clock. This is always monotonic comparing on the same cpu, but may have some drift between cpus (within about a jiffy).