mirror of git://gcc.gnu.org/git/gcc.git
80 lines
1.9 KiB
Java
80 lines
1.9 KiB
Java
/* GCInfo.java -- Support for creating heap dumps.
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Copyright (C) 2007 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package gnu.gcj.util;
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public class GCInfo
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{
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private GCInfo()
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{
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}
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/**
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* @throws SecurityException if there is a SecurityManager installed
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* and UtilPermission("dumpHeap") is not granted.
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*/
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private static void checkPermission()
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{
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SecurityManager sm = System.getSecurityManager();
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if (sm != null)
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sm.checkPermission(new UtilPermission("dumpHeap"));
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}
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/**
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* Dump a description of the heap state.
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*
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* @param namePrefix The filename prefix for the dump files.
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*
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* @throws SecurityException if there is a SecurityManager installed
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* and UtilPermission("dumpHeap") is not granted.
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*/
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public static synchronized void dump(String name)
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{
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checkPermission();
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dump0(name);
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}
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private static native void dump0(String name);
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/**
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* Create a heap dump.
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*
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* @param namePrefix The filename prefix for the dump files.
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*
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* @throws SecurityException if there is a SecurityManager installed
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* and UtilPermission("dumpHeap") is not granted.
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*/
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public static synchronized void enumerate(String namePrefix)
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{
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checkPermission();
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enumerate0(namePrefix);
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}
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private static native void enumerate0(String namePrefix);
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/**
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* Cause a heap dump if out-of-memory condition occurs.
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*
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* @param namePrefix The filename prefix for the dump files. If
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* null no dumps are created.
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*
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* @throws SecurityException if there is a SecurityManager installed
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* and UtilPermission("dumpHeap") is not granted.
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*/
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public static synchronized void setOOMDump(String namePrefix)
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{
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checkPermission();
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setOOMDump0(namePrefix);
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}
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private static native void setOOMDump0(String namePrefix);
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}
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