Expose profile duration instead of start and end time.

cpuprofile.go

@@ -15,14 +15,14 @@ type CPUProfile struct {
 	// root is the root node of the top down call tree.
 	root *CPUProfileNode
 
-	// startTime is the time when the profile recording was started (in microseconds)
+	// startTimeOffset is the time when the profile recording was started
 	// since some unspecified starting point.
-	startTime time.Time
+	startTimeOffset time.Duration
 
-	// endTime is the time when the profile recording was stopped (in microseconds)
+	// endTimeOffset is the time when the profile recording was stopped
 	// since some unspecified starting point.
-	// The point is equal to the starting point used by startTime.
-	endTime time.Time
+	// The point is equal to the starting point used by startTimeOffset.
+	endTimeOffset time.Duration
 }
 
 // Returns CPU profile title.
@@ -35,17 +35,9 @@ func (c *CPUProfile) GetTopDownRoot() *CPUProfileNode {
 	return c.root
 }
 
-// Returns the time when the profile recording was started (in microseconds)
-// since some unspecified starting point.
-func (c *CPUProfile) GetStartTime() time.Time {
-	return c.startTime
-}
-
-// Returns the time when the profile recording was stopped (in microseconds)
-// since some unspecified starting point.
-// The point is equal to the starting point used by startTime.
-func (c *CPUProfile) GetEndTime() time.Time {
-	return c.endTime
+// Returns the duration of the profile.
+func (c *CPUProfile) GetDuration() time.Duration {
+	return c.endTimeOffset - c.startTimeOffset
 }
 
 // Deletes the profile and removes it from CpuProfiler's list.

cpuprofile_test.go

@@ -44,8 +44,8 @@ func TestCPUProfile(t *testing.T) {
 		t.Errorf("expected (root), but got %v", root.GetFunctionName())
 	}
 
-	if !cpuProfile.GetStartTime().Before(cpuProfile.GetEndTime()) {
-		t.Fatalf("expected profile start time (%s) before end time (%s)", cpuProfile.GetStartTime(), cpuProfile.GetEndTime())
+	if cpuProfile.GetDuration() <= 0 {
+		t.Fatalf("expected positive profile duration (%s)", cpuProfile.GetDuration())
 	}
 }
 

cpuprofiler.go

@@ -10,6 +10,7 @@ package v8go
 */
 import "C"
 import (
+	"time"
 	"unsafe"
 )
 
@@ -64,11 +65,11 @@ func (c *CPUProfiler) StopProfiling(title string) *CPUProfile {
 	profile := C.CPUProfilerStopProfiling(c.p, tstr)
 
 	return &CPUProfile{
-		p:         profile,
-		title:     C.GoString(profile.title),
-		root:      newCPUProfileNode(profile.root, nil),
-		startTime: timeUnixMicro(int64(profile.startTime)),
-		endTime:   timeUnixMicro(int64(profile.endTime)),
+		p:               profile,
+		title:           C.GoString(profile.title),
+		root:            newCPUProfileNode(profile.root, nil),
+		startTimeOffset: time.Duration(profile.startTime) * time.Millisecond,
+		endTimeOffset:   time.Duration(profile.endTime) * time.Millisecond,
 	}
 }