1*b8ed3825SDonkey Kane use crate::time::{clocksource::HZ, TimeArch}; 2fbe6becdSLoGin 38cb2e9b3SLoGin use super::driver::tsc::TSCManager; 48cb2e9b3SLoGin 5*b8ed3825SDonkey Kane /// 这个是系统jiffies时钟源的固有频率（不是调频之后的） 6*b8ed3825SDonkey Kane pub const CLOCK_TICK_RATE: u32 = HZ as u32 * 1000000; 7*b8ed3825SDonkey Kane 8fbe6becdSLoGin pub struct X86_64TimeArch; 9fbe6becdSLoGin 10fbe6becdSLoGin impl TimeArch for X86_64TimeArch { 11*b8ed3825SDonkey Kane #[inline(always)] 12fbe6becdSLoGin fn get_cycles() -> usize { 13fbe6becdSLoGin unsafe { x86::time::rdtsc() as usize } 14fbe6becdSLoGin } 158cb2e9b3SLoGin 168cb2e9b3SLoGin fn cal_expire_cycles(ns: usize) -> usize { 178cb2e9b3SLoGin Self::get_cycles() + ns * TSCManager::cpu_khz() as usize / 1000000 188cb2e9b3SLoGin } 19*b8ed3825SDonkey Kane 20*b8ed3825SDonkey Kane /// 将CPU的时钟周期数转换为纳秒 21*b8ed3825SDonkey Kane #[inline(always)] 22*b8ed3825SDonkey Kane fn cycles2ns(cycles: usize) -> usize { 23*b8ed3825SDonkey Kane cycles * 1000000 / TSCManager::cpu_khz() as usize 24*b8ed3825SDonkey Kane } 25fbe6becdSLoGin } 26