Moved JVMUtil to private package; Invoke JVMUtil.initSingleton() from Platform static init after loading native library.

1 files changed, 77 insertions, 0 deletions

diff --git a/src/java/jogamp/common/jvm/JVMUtil.java b/src/java/jogamp/common/jvm/JVMUtil.java
new file mode 100644
index 0000000..ac6355f
--- /dev/null
+++ b/src/java/jogamp/common/jvm/JVMUtil.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+package jogamp.common.jvm;
+
+import java.nio.ByteBuffer;
+
+import jogamp.common.Debug;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.common.os.Platform;
+
+
+/**
+ * Currently this tool works around the Hotspot race condition bugs:
+ <PRE>
+     4395095 JNI access to java.nio DirectBuffer constructor/accessor
+     6852404 Race condition in JNI Direct Buffer access and creation routines
+ </PRE>
+ *
+ * Make sure to initialize this class as soon as possible,
+ * before doing any multithreading work.
+ *
+ */
+public class JVMUtil {
+    private static final boolean DEBUG = Debug.debug("JVMUtil");
+
+    static {
+        Platform.initSingleton(); // loads native gluegen-rt library
+
+        ByteBuffer buffer = Buffers.newDirectByteBuffer(64);
+        if( ! initialize(buffer) ) {
+            throw new RuntimeException("Failed to initialize the JVMUtil "+Thread.currentThread().getName());
+        }
+        if(DEBUG) {
+            Exception e = new Exception("JVMUtil.initSingleton() .. initialized "+Thread.currentThread().getName());
+            e.printStackTrace();
+        }
+    }
+
+    public static void initSingleton() {
+    }
+
+    private JVMUtil() {}
+
+    private static native boolean initialize(java.nio.ByteBuffer buffer);
+}
+