hotspot虚拟机源码
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/*
* Copyright (c) 2013, 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 WhiteBox
* @bug 8011675
* @summary verify that whitebox can be used even if not all functions are declared in java-part
* @author igor.ignatyev@oracle.com
* @library /testlibrary
* @compile WhiteBox.java
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI sun.hotspot.WhiteBox
* @clean sun.hotspot.WhiteBox
*/
package sun.hotspot;
public class WhiteBox {
private static native void registerNatives();
static { registerNatives(); }
public native int notExistedMethod();
public native int getHeapOopSize();
public static void main(String[] args) {
WhiteBox wb = new WhiteBox();
if (wb.getHeapOopSize() < 0) {
throw new Error("wb.getHeapOopSize() < 0");
}
boolean catched = false;
try {
wb.notExistedMethod();
} catch (UnsatisfiedLinkError e) {
catched = true;
}
if (!catched) {
throw new Error("wb.notExistedMethod() was invoked");
}
}
}