SingletonInstance Enhancements / Minor Lock/LockExt API Change (isLocked moved up)

We learned that FileChannel.lock() is not reliable on at least GNU/Linux + Sun's JVM implementation,
hence we need a ServerSocket implementation.

Since this code may be useful to others, it has been promoted to GlueGen.

- Abstract SingletonInstance
- Implement Lock interface
- SingletonInstance Spezialisation: FileLock and ServerSocket

Minor API Change: LockExt.isLocked() -> Lock.isLocked()

1 files changed, 2 insertions, 0 deletions

diff --git a/src/java/com/jogamp/common/util/locks/Lock.java b/src/java/com/jogamp/common/util/locks/Lock.java
index 4ea8bf4..ad379ef 100644
--- a/src/java/com/jogamp/common/util/locks/Lock.java
+++ b/src/java/com/jogamp/common/util/locks/Lock.java
@@ -74,4 +74,6 @@ public interface Lock {
      * @throws RuntimeException in case the lock is not acquired by this thread.
      */
     void unlock() throws RuntimeException;
+    
+    boolean isLocked();
 }