[process][linux] get name from /proc/(pid)/comm

v3/process/process_linux_test.go

@@ -66,11 +66,11 @@ func Test_Process_splitProcStat_fromFile(t *testing.T) {
 	defer f()
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
-		if err != nil{
+		if err != nil {
 			continue
 		}
 		statFile := fmt.Sprintf("testdata/linux/%d/stat", pid)
-		if _, err := os.Stat(statFile); err != nil{
+		if _, err := os.Stat(statFile); err != nil {
 			continue
 		}
 		contents, err := ioutil.ReadFile(statFile)
@@ -125,10 +125,10 @@ func Test_fillFromStatusWithContext(t *testing.T) {
 	defer f()
 	for _, pid := range pids {
 		pid, err := strconv.ParseInt(pid.Name(), 0, 32)
-		if err != nil{
+		if err != nil {
 			continue
 		}
-		if _, err := os.Stat(fmt.Sprintf("testdata/linux/%d/status", pid)); err != nil{
+		if _, err := os.Stat(fmt.Sprintf("testdata/linux/%d/status", pid)); err != nil {
 			continue
 		}
 		p, _ := NewProcess(int32(pid))
@@ -138,6 +138,26 @@ func Test_fillFromStatusWithContext(t *testing.T) {
 	}
 }
 
+func Benchmark_fillFromCommWithContext(b *testing.B) {
+	f := common.MockEnv("HOST_PROC", "testdata/linux")
+	defer f()
+	pid := 1060
+	for i := 0; i < b.N; i++ {
+		p, _ := NewProcess(int32(pid))
+		p.fillFromCommWithContext(context.Background())
+	}
+}
+
+func Benchmark_fillFromStatusWithContext(b *testing.B) {
+	f := common.MockEnv("HOST_PROC", "testdata/linux")
+	defer f()
+	pid := 1060
+	for i := 0; i < b.N; i++ {
+		p, _ := NewProcess(int32(pid))
+		p.fillFromStatusWithContext(context.Background())
+	}
+}
+
 func Test_fillFromTIDStatWithContext_lx_brandz(t *testing.T) {
 	pids, err := ioutil.ReadDir("testdata/lx_brandz/")
 	if err != nil {