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-rw-r--r--src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java21
1 files changed, 15 insertions, 6 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java b/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java
index 741d4461b..284e2bcc9 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/FPSAnimator.java
@@ -116,6 +116,9 @@ public class FPSAnimator extends AnimatorBase {
}
private void startTask() {
+ if(null != task) {
+ return;
+ }
long delay = (long) (1000.0f / (float) fps);
task = new TimerTask() {
public void run() {
@@ -161,10 +164,14 @@ public class FPSAnimator extends AnimatorBase {
stateSync.lock();
try {
shouldRun = false;
- task.cancel();
- task = null;
- timer.cancel();
- timer = null;
+ if(null != task) {
+ task.cancel();
+ task = null;
+ }
+ if(null != timer) {
+ timer.cancel();
+ timer = null;
+ }
animThread = null;
} finally {
stateSync.unlock();
@@ -179,8 +186,10 @@ public class FPSAnimator extends AnimatorBase {
stateSync.lock();
try {
shouldRun = false;
- task.cancel();
- task = null;
+ if(null != task) {
+ task.cancel();
+ task = null;
+ }
animThread = null;
} finally {
stateSync.unlock();