7085860: JSR 292: implement CallSite.setTargetNormal and setTargetVolatile as native methods

Reviewed-by: jrose, never

jdk/src/share/classes/java/lang/invoke/CallSite.java

@@ -266,7 +266,7 @@ public class CallSite {
 
     /*package-private*/
     void setTargetNormal(MethodHandle newTarget) {
-        target = newTarget;
+        MethodHandleNatives.setCallSiteTargetNormal(this, newTarget);
     }
     /*package-private*/
     MethodHandle getTargetVolatile() {
@@ -274,7 +274,7 @@ public class CallSite {
     }
     /*package-private*/
     void setTargetVolatile(MethodHandle newTarget) {
-        unsafe.putObjectVolatile(this, TARGET_OFFSET, newTarget);
+        MethodHandleNatives.setCallSiteTargetVolatile(this, newTarget);
     }
 
     // this implements the upcall from the JVM, MethodHandleNatives.makeDynamicCallSite:

jdk/src/share/classes/java/lang/invoke/MethodHandleNatives.java

@@ -61,15 +61,6 @@ class MethodHandleNatives {
     /** Initialize a method type, once per form. */
     static native void init(MethodType self);
 
-    /** Tell the JVM about a class's bootstrap method. */
-    static native void registerBootstrap(Class<?> caller, MethodHandle bootstrapMethod);
-
-    /** Ask the JVM about a class's bootstrap method. */
-    static native MethodHandle getBootstrap(Class<?> caller);
-
-    /** Tell the JVM that we need to change the target of an invokedynamic. */
-    static native void setCallSiteTarget(CallSite site, MethodHandle target);
-
     /** Fetch the vmtarget field.
      *  It will be sanitized as necessary to avoid exposing non-Java references.
      *  This routine is for debugging and reflection.
@@ -122,6 +113,12 @@ class MethodHandleNatives {
 
     static final boolean COUNT_GWT;
 
+    /// CallSite support
+
+    /** Tell the JVM that we need to change the target of a CallSite. */
+    static native void setCallSiteTargetNormal(CallSite site, MethodHandle target);
+    static native void setCallSiteTargetVolatile(CallSite site, MethodHandle target);
+
     private static native void registerNatives();
     static {
         registerNatives();

jdk/test/java/lang/invoke/CallSiteTest.java

@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @summary smoke tests for CallSite
+ *
+ * @build indify.Indify
+ * @compile CallSiteTest.java
+ * @run main/othervm
+ *      indify.Indify
+ *      --expand-properties --classpath ${test.classes}
+ *      --java test.java.lang.invoke.CallSiteTest
+ */
+
+package test.java.lang.invoke;
+
+import static org.junit.Assert.*;
+
+import java.io.*;
+
+import java.lang.invoke.*;
+import static java.lang.invoke.MethodHandles.*;
+import static java.lang.invoke.MethodType.*;
+
+public class CallSiteTest {
+    private final static Class CLASS = CallSiteTest.class;
+
+    private static CallSite mcs;
+    private static CallSite vcs;
+    private static MethodHandle mh_foo;
+    private static MethodHandle mh_bar;
+
+    static {
+        try {
+            mh_foo = lookup().findStatic(CLASS, "foo", methodType(int.class, int.class, int.class));
+            mh_bar = lookup().findStatic(CLASS, "bar", methodType(int.class, int.class, int.class));
+            mcs = new MutableCallSite(mh_foo);
+            vcs = new VolatileCallSite(mh_foo);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String... av) throws Throwable {
+        testMutableCallSite();
+        testVolatileCallSite();
+    }
+
+    private final static int N = Integer.MAX_VALUE / 100;
+    private final static int RESULT1 = 762786192;
+    private final static int RESULT2 = -21474836;
+
+    private static void testMutableCallSite() throws Throwable {
+        // warm-up
+        for (int i = 0; i < 20000; i++) {
+            mcs.setTarget(mh_foo);
+        }
+        // run
+        for (int n = 0; n < 2; n++) {
+            mcs.setTarget(mh_foo);
+            for (int i = 0; i < 5; i++) {
+                assertEquals(RESULT1, runMutableCallSite());
+            }
+            mcs.setTarget(mh_bar);
+            for (int i = 0; i < 5; i++) {
+                assertEquals(RESULT2, runMutableCallSite());
+            }
+        }
+    }
+    private static void testVolatileCallSite() throws Throwable {
+        // warm-up
+        for (int i = 0; i < 20000; i++) {
+            vcs.setTarget(mh_foo);
+        }
+        // run
+        for (int n = 0; n < 2; n++) {
+            vcs.setTarget(mh_foo);
+            for (int i = 0; i < 5; i++) {
+                assertEquals(RESULT1, runVolatileCallSite());
+            }
+            vcs.setTarget(mh_bar);
+            for (int i = 0; i < 5; i++) {
+                assertEquals(RESULT2, runVolatileCallSite());
+            }
+        }
+    }
+
+    private static int runMutableCallSite() throws Throwable {
+        int sum = 0;
+        for (int i = 0; i < N; i++) {
+            sum += (int) INDY_mcs().invokeExact(i, i+1);
+        }
+        return sum;
+    }
+    private static int runVolatileCallSite() throws Throwable {
+        int sum = 0;
+        for (int i = 0; i < N; i++) {
+            sum += (int) INDY_vcs().invokeExact(i, i+1);
+        }
+        return sum;
+    }
+
+    static int foo(int a, int b) { return a + b; }
+    static int bar(int a, int b) { return a - b; }
+
+    private static MethodType MT_bsm() {
+        shouldNotCallThis();
+        return methodType(CallSite.class, Lookup.class, String.class, MethodType.class);
+    }
+
+    private static CallSite bsm_mcs(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
+        return mcs;
+    }
+    private static MethodHandle MH_bsm_mcs() throws ReflectiveOperationException {
+        shouldNotCallThis();
+        return lookup().findStatic(lookup().lookupClass(), "bsm_mcs", MT_bsm());
+    }
+    private static MethodHandle INDY_mcs() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm_mcs().invoke(lookup(), "foo", methodType(int.class, int.class, int.class))).dynamicInvoker();
+    }
+
+    private static CallSite bsm_vcs(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
+        return vcs;
+    }
+    private static MethodHandle MH_bsm_vcs() throws ReflectiveOperationException {
+        shouldNotCallThis();
+        return lookup().findStatic(lookup().lookupClass(), "bsm_vcs", MT_bsm());
+    }
+    private static MethodHandle INDY_vcs() throws Throwable {
+        shouldNotCallThis();
+        return ((CallSite) MH_bsm_vcs().invoke(lookup(), "foo", methodType(int.class, int.class, int.class))).dynamicInvoker();
+    }
+
+    private static void shouldNotCallThis() {
+        // if this gets called, the transformation has not taken place
+        throw new AssertionError("this code should be statically transformed away by Indify");
+    }
+}