RFR (S): 8000999: backport of JSR 292 to 7u

[Christian Thalinger]

http://cr.openjdk.java.net/~twisti/8000999

8000999: backport of JSR 292 to 7u
Reviewed-by:

This is an umbrella bug for these changes (which are backported in one
changeset):

6983728: JSR 292 remove argument count limitations 
7128512: Javadoc typo in java.lang.invoke.MethodHandle 
7117167: Misc warnings in java.lang.invoke and sun.invoke.* 
7129034: VM crash with a field setter method with a filterArguments 
7087658: MethodHandles.Lookup.findVirtual is confused by interface methods that are multiply inherited 
7127687: MethodType leaks memory due to interning 
7023639: JSR 292 method handle invocation needs a fast path for compiled code 
7188911: nightly failures after JSR 292 lazy method handle update (round 2) 
7190416: JSR 292: typo in InvokerBytecodeGenerator.getConstantPoolSize 
7191102: nightly failures after JSR 292 lazy method handle update (round 3) 
7194612: api/java_lang/invoke/MethodHandles/Lookup/index.html#ExceptionsTests[findVirtualNSME] fails w/ -esa 
7194662: JSR 292: PermuteArgsTest times out in nightly test runs

The backport is just copying over the files from JDK 8.  That's why the webrev is so big and pretty useless.  The real changes between 8 and 7 are these:

diff -Nur jdk8/src/share/classes/java/lang/invoke/MethodHandleStatics.java jdk7u/src/share/classes/java/lang/invoke/MethodHandleStatics.java
--- jdk8/src/share/classes/java/lang/invoke/MethodHandleStatics.java    2012-10-15 12:21:52.806052959 -0700
+++ jdk7u/src/share/classes/java/lang/invoke/MethodHandleStatics.java   2012-10-16 10:48:29.728257304 -0700
@@ -94,10 +94,14 @@
 
     // handy shared exception makers (they simplify the common case code)
     /*non-public*/ static InternalError newInternalError(String message, Throwable cause) {
-        return new InternalError(message, cause);
+        InternalError e = new InternalError(message);
+        e.initCause(cause);
+        return e;
     }
     /*non-public*/ static InternalError newInternalError(Throwable cause) {
-        return new InternalError(cause);
+        InternalError e = new InternalError();
+        e.initCause(cause);
+        return e;
     }
     /*non-public*/ static RuntimeException newIllegalStateException(String message) {
         return new IllegalStateException(message);
diff -Nur jdk8/src/share/classes/sun/invoke/util/ValueConversions.java jdk7u/src/share/classes/sun/invoke/util/ValueConversions.java
--- jdk8/src/share/classes/sun/invoke/util/ValueConversions.java        2012-10-16 10:49:36.081911283 -0700
+++ jdk7u/src/share/classes/sun/invoke/util/ValueConversions.java       2012-10-16 10:48:19.626424849 -0700
@@ -1211,9 +1211,13 @@
 
     // handy shared exception makers (they simplify the common case code)
     private static InternalError newInternalError(String message, Throwable cause) {
-        return new InternalError(message, cause);
+        InternalError e = new InternalError(message);
+        e.initCause(cause);
+        return e;
     }
     private static InternalError newInternalError(Throwable cause) {
-        return new InternalError(cause);
+        InternalError e = new InternalError();
+        e.initCause(cause);
+        return e;
     }
 }
diff --git a/src/share/classes/sun/misc/Unsafe.java b/src/share/classes/sun/misc/Unsafe.java
--- a/src/share/classes/sun/misc/Unsafe.java
+++ b/src/share/classes/sun/misc/Unsafe.java
@@ -678,6 +678,14 @@
     public native Object staticFieldBase(Field f);
 
     /**
+     * Detect if the given class may need to be initialized. This is often
+     * needed in conjunction with obtaining the static field base of a
+     * class.
+     * @return false only if a call to {@code ensureClassInitialized} would have no effect
+     */
+    public native boolean shouldBeInitialized(Class c);
+
+    /**
      * Ensure the given class has been initialized. This is often
      * needed in conjunction with obtaining the static field base of a
      * class.