package procstat import ( "fmt" "time" "github.com/shirou/gopsutil/cpu" "github.com/shirou/gopsutil/process" ) type Process interface { PID() PID Tags() map[string]string IOCounters() (*process.IOCountersStat, error) MemoryInfo() (*process.MemoryInfoStat, error) Name() (string, error) NumCtxSwitches() (*process.NumCtxSwitchesStat, error) NumFDs() (int32, error) NumThreads() (int32, error) Percent(interval time.Duration) (float64, error) Times() (*cpu.TimesStat, error) RlimitUsage(bool) ([]process.RlimitStat, error) } type Proc struct { hasCPUTimes bool tags map[string]string *process.Process } func NewProc(pid PID) (Process, error) { process, err := process.NewProcess(int32(pid)) if err != nil { return nil, err } proc := &Proc{ Process: process, hasCPUTimes: false, tags: make(map[string]string), } return proc, nil } func (p *Proc) Tags() map[string]string { return p.tags } func (p *Proc) PID() PID { return PID(p.Process.Pid) } func (p *Proc) Percent(interval time.Duration) (float64, error) { cpu_perc, err := p.Process.Percent(time.Duration(0)) if !p.hasCPUTimes && err == nil { p.hasCPUTimes = true return 0, fmt.Errorf("Must call Percent twice to compute percent cpu.") } return cpu_perc, err }