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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/util/GCInfo.java
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Diffstat (limited to 'libjava/gnu/gcj/util/GCInfo.java')
-rw-r--r--libjava/gnu/gcj/util/GCInfo.java79
1 files changed, 79 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/util/GCInfo.java b/libjava/gnu/gcj/util/GCInfo.java
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+++ b/libjava/gnu/gcj/util/GCInfo.java
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+/* GCInfo.java -- Support for creating heap dumps.
+ Copyright (C) 2007 Free Software Foundation
+
+ This file is part of libgcj.
+
+ This software is copyrighted work licensed under the terms of the
+ Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+ details. */
+
+package gnu.gcj.util;
+
+public class GCInfo
+{
+ private GCInfo()
+ {
+ }
+
+ /**
+ * @throws SecurityException if there is a SecurityManager installed
+ * and UtilPermission("dumpHeap") is not granted.
+ */
+ private static void checkPermission()
+ {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null)
+ sm.checkPermission(new UtilPermission("dumpHeap"));
+ }
+
+
+ /**
+ * Dump a description of the heap state.
+ *
+ * @param namePrefix The filename prefix for the dump files.
+ *
+ * @throws SecurityException if there is a SecurityManager installed
+ * and UtilPermission("dumpHeap") is not granted.
+ */
+ public static synchronized void dump(String name)
+ {
+ checkPermission();
+ dump0(name);
+ }
+
+ private static native void dump0(String name);
+
+
+ /**
+ * Create a heap dump.
+ *
+ * @param namePrefix The filename prefix for the dump files.
+ *
+ * @throws SecurityException if there is a SecurityManager installed
+ * and UtilPermission("dumpHeap") is not granted.
+ */
+ public static synchronized void enumerate(String namePrefix)
+ {
+ checkPermission();
+ enumerate0(namePrefix);
+ }
+
+ private static native void enumerate0(String namePrefix);
+
+ /**
+ * Cause a heap dump if out-of-memory condition occurs.
+ *
+ * @param namePrefix The filename prefix for the dump files. If
+ * null no dumps are created.
+ *
+ * @throws SecurityException if there is a SecurityManager installed
+ * and UtilPermission("dumpHeap") is not granted.
+ */
+ public static synchronized void setOOMDump(String namePrefix)
+ {
+ checkPermission();
+ setOOMDump0(namePrefix);
+ }
+
+ private static native void setOOMDump0(String namePrefix);
+}