jdk8-mips64-public/hotspot: test/testlibrary/whitebox/sun/hotspot/WhiteBox.java@f32b6c267d2e (annotated)

test/testlibrary/whitebox/sun/hotspot/WhiteBox.java@f32b6c267d2e (annotated)

test/testlibrary/whitebox/sun/hotspot/WhiteBox.java

Mon, 29 Apr 2013 11:03:49 -0700

author: mikael
date: Mon, 29 Apr 2013 11:03:49 -0700
changeset 4989: f32b6c267d2e
parent 4955: 01d5f04e64dc
child 5073: d17700c82d7d
permissions: -rw-r--r--

8012015: Use PROT_NONE when reserving memory
Summary: Reserved memory had PROT_READ+PROT_WRITE access on Linux/bsd, now changed to PROT_NONE.
Reviewed-by: dholmes, ctornqvi

 /*
  * Copyright (c) 2012, 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.
  *
  */
 package sun.hotspot;
 import java.lang.reflect.Executable;
 import java.security.BasicPermission;
 import sun.hotspot.parser.DiagnosticCommand;
 public class WhiteBox {
   @SuppressWarnings("serial")
   public static class WhiteBoxPermission extends BasicPermission {
     public WhiteBoxPermission(String s) {
       super(s);
     }
   }
   private WhiteBox() {}
   private static final WhiteBox instance = new WhiteBox();
   private static native void registerNatives();
   /**
    * Returns the singleton WhiteBox instance.
    *
    * The returned WhiteBox object should be carefully guarded
    * by the caller, since it can be used to read and write data
    * at arbitrary memory addresses. It must never be passed to
    * untrusted code.
    */
   public synchronized static WhiteBox getWhiteBox() {
     SecurityManager sm = System.getSecurityManager();
     if (sm != null) {
       sm.checkPermission(new WhiteBoxPermission("getInstance"));
     }
     return instance;
   }
   static {
     registerNatives();
   }
   // Memory
   public native long getObjectAddress(Object o);
   public native int  getHeapOopSize();
   // Runtime
   // Make sure class name is in the correct format
   public boolean isClassAlive(String name) {
     return isClassAlive0(name.replace('.', '/'));
   }
   private native boolean isClassAlive0(String name);
   // G1
   public native boolean g1InConcurrentMark();
   public native boolean g1IsHumongous(Object o);
   public native long    g1NumFreeRegions();
   public native int     g1RegionSize();
   public native Object[]    parseCommandLine(String commandline, DiagnosticCommand[] args);
   // NMT
   public native long NMTMalloc(long size);
   public native void NMTFree(long mem);
   public native long NMTReserveMemory(long size);
   public native void NMTCommitMemory(long addr, long size);
   public native void NMTUncommitMemory(long addr, long size);
   public native void NMTReleaseMemory(long addr, long size);
   public native boolean NMTWaitForDataMerge();
   // Compiler
   public native void    deoptimizeAll();
   public native boolean isMethodCompiled(Executable method);
   public boolean isMethodCompilable(Executable method) {
       return isMethodCompilable(method, -1 /*any*/);
   }
   public native boolean isMethodCompilable(Executable method, int compLevel);
   public native boolean isMethodQueuedForCompilation(Executable method);
   public native int     deoptimizeMethod(Executable method);
   public void makeMethodNotCompilable(Executable method) {
       makeMethodNotCompilable(method, -1 /*any*/);
   }
   public native void    makeMethodNotCompilable(Executable method, int compLevel);
   public native int     getMethodCompilationLevel(Executable method);
   public native boolean testSetDontInlineMethod(Executable method, boolean value);
   public native int     getCompileQueuesSize();
   public native boolean testSetForceInlineMethod(Executable method, boolean value);
   public native boolean enqueueMethodForCompilation(Executable method, int compLevel);
   public native void    clearMethodState(Executable method);
   // Intered strings
   public native boolean isInStringTable(String str);
   // Memory
   public native long reserveMemory(long size);
   // force Full GC
   public native void fullGC();
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/testlibrary/whitebox/sun/hotspot/WhiteBox.java@f32b6c267d2e (annotated)

test/testlibrary/whitebox/sun/hotspot/WhiteBox.java