1 files changed, 27 insertions, 0 deletions
diff --git a/make/jawt-CustomJavaCode.java b/make/jawt-CustomJavaCode.java
new file mode 100755
index 000000000..7e8e83b39
--- /dev/null
+++ b/make/jawt-CustomJavaCode.java
@@ -0,0 +1,27 @@
+private static volatile JAWT jawt;
+
+/** Helper routine for all users to call to access the JAWT. */
+public static JAWT getJAWT() {
+  if (jawt == null) {
+    synchronized (JAWT.class) {
+      if (jawt == null) {
+        NativeLibLoader.loadAWTImpl();
+        // Workaround for 4845371.
+        // Make sure the first reference to the JNI GetDirectBufferAddress is done
+        // from a privileged context so the VM's internal class lookups will succeed.
+        AccessController.doPrivileged(new PrivilegedAction() {
+            public Object run() {
+              JAWT j = JAWT.create();
+              j.version(JAWTFactory.JAWT_VERSION_1_4);
+              if (!JAWTFactory.JAWT_GetAWT(j)) {
+                throw new RuntimeException("Unable to initialize JAWT");
+              }
+              jawt = j;
+              return null;
+            }
+          });
+      }
+    }
+  }
+  return jawt;
+}