// Gathers CPU statistics and fills the global cpu stat variable.
func gatherCpuInfo() {
// Collect the current usage info
if C.CollectCpuInfo() == 0 {
panic(fmt.Errorf("faield to gther CPU usage info"))
}
// Extract the CPU counters
user := int64(C.UserTime())
kernel := int64(C.KernelTime())
idle := int64(C.IdleTime())
// Update the local and global state
cpu.lock.Lock()
defer cpu.lock.Unlock()
prev := cpuWindows.user + cpuWindows.kernel - cpuWindows.idle
busy := user + kernel - idle
work := busy - prev
wait := idle - cpuWindows.idle
cpu.usage = float32(work) / float32(work+wait)
cpuWindows.user = user
cpuWindows.kernel = kernel
cpuWindows.idle = idle
}
// Gathers CPU statistics and fills the global cpu stat variable.
func gatherCpuInfo() {
// Collect the current usage info
if C.CollectCpuInfo() == 0 {
panic(fmt.Errorf("faield to gther CPU usage info"))
}
// Extract the CPU counters
total := int64(C.TotalTime())
idle := int64(C.IdleTime())
// Update the local and global state
cpu.lock.Lock()
defer cpu.lock.Unlock()
prev := cpuDarwin.total + -cpuDarwin.idle
busy := total - idle
work := busy - prev
wait := idle - cpuDarwin.idle
cpu.usage = float32(work) / float32(work+wait)
cpuDarwin.total = total
cpuDarwin.idle = idle
}