Function TestThreadStat

thread_test.go:49–116

(t *testing.T)

}

func TestThreadStat(t *testing.T) {
	// Pull process and thread stats.
	proc, err := getProcFixtures(t).Proc(testPID)
	if err != nil {
		t.Fatal(err)
	}
	procStat, err := proc.Stat()
	if err != nil {
		t.Fatal(err)
	}

	threads, err := getProcFixtures(t).AllThreads(testPID)
	if err != nil {
		t.Fatal(err)
	}
	sort.Sort(threads)
	threadStats := make([]*ProcStat, len(threads))
	for i, thread := range threads {
		threadStat, err := thread.Stat()
		if err != nil {
			t.Fatal(err)
		}
		threadStats[i] = &threadStat
	}

	// The following fields should be shared between the process and its thread:
	procStatValue := reflect.ValueOf(procStat)
	sharedFields := [...]string{
		"PPID",
		"PGRP",
		"Session",
		"TTY",
		"TPGID",
		"VSize",
		"RSS",
	}

	for i, thread := range threads {
		threadStatValue := reflect.ValueOf(threadStats[i]).Elem()
		for _, f := range sharedFields {
			if want, have := procStatValue.FieldByName(f), threadStatValue.FieldByName(f); want.Interface() != have.Interface() {
				t.Errorf("TID %d, want %s %#v, have %#v", thread.PID, f, want, have)
			}
		}
	}

	// Thread specific fields:
	for i, thread := range threads {
		if want, have := thread.PID, threadStats[i].PID; want != have {
			t.Errorf("TID %d, want PID %d, have %d", thread.PID, want, have)
		}
	}

	// Finally exemplify the relationship between process and constituent
	// threads CPU times: each the former  ~ the sum of the corresponding
	// latter. Require -v flag.
	totalUTime, totalSTime := uint(0), uint(0)
	for _, thread := range threads {