--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Compiler/src/com/sun/c1x/observer/CompilationEvent.java	Wed Apr 27 11:43:22 2011 +0200
@@ -0,0 +1,142 @@
+/*
+ * 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.
+ */
+package com.sun.c1x.observer;
+
+import java.util.*;
+
+import com.sun.c1x.*;
+import com.sun.c1x.alloc.*;
+import com.sun.c1x.graph.*;
+import com.sun.c1x.ir.*;
+import com.sun.cri.ci.*;
+import com.sun.cri.ri.*;
+
+/**
+ * An event that occurred during compilation. Instances of this class provide information about the event and the state
+ * of the compilation when the event was raised. {@link #getCompilation()} and {@link #getMethod()} are guaranteed to
+ * always return a non-{@code null} value. Other objects provided by getter methods may be {@code null},
+ * depending on the available information when and where the event was triggered.
+ *
+ * @author Peter Hofer
+ */
+public class CompilationEvent {
+
+    private final C1XCompilation compilation;
+    private final String label;
+    private BlockBegin startBlock;
+
+    private BlockMap blockMap;
+    private int codeSize = -1;
+
+    private LinearScan allocator;
+    private CiTargetMethod targetMethod;
+    private boolean hirValid = false;
+    private boolean lirValid = false;
+
+    private Interval[] intervals;
+    private int intervalsSize;
+    private Interval[] intervalsCopy = null;
+
+    public CompilationEvent(C1XCompilation compilation) {
+        this(compilation, null);
+    }
+
+    private CompilationEvent(C1XCompilation compilation, String label) {
+        assert compilation != null;
+        this.label = label;
+        this.compilation = compilation;
+    }
+
+    public CompilationEvent(C1XCompilation compilation, String label, BlockBegin startBlock, boolean hirValid, boolean lirValid) {
+        this(compilation, label);
+        this.startBlock = startBlock;
+        this.hirValid = hirValid;
+        this.lirValid = lirValid;
+    }
+
+    public CompilationEvent(C1XCompilation compilation, String label, BlockBegin startBlock, boolean hirValid, boolean lirValid, CiTargetMethod targetMethod) {
+        this(compilation, label, startBlock, hirValid, lirValid);
+        this.targetMethod = targetMethod;
+    }
+
+    public CompilationEvent(C1XCompilation compilation, String label, BlockMap blockMap, int codeSize) {
+        this(compilation, label);
+        this.blockMap = blockMap;
+        this.codeSize = codeSize;
+    }
+
+    public CompilationEvent(C1XCompilation compilation, String label, LinearScan allocator, Interval[] intervals, int intervalsSize) {
+        this(compilation, label);
+        this.allocator = allocator;
+        this.intervals = intervals;
+        this.intervalsSize = intervalsSize;
+    }
+
+    public C1XCompilation getCompilation() {
+        return compilation;
+    }
+
+    public String getLabel() {
+        return label;
+    }
+
+    public RiMethod getMethod() {
+        return compilation.method;
+    }
+
+    public BlockMap getBlockMap() {
+        return blockMap;
+    }
+
+    public BlockBegin getStartBlock() {
+        return startBlock;
+    }
+
+    public LinearScan getAllocator() {
+        return allocator;
+    }
+
+    public CiTargetMethod getTargetMethod() {
+        return targetMethod;
+    }
+
+    public boolean isHIRValid() {
+        return hirValid;
+    }
+
+    public boolean isLIRValid() {
+        return lirValid;
+    }
+
+    public Interval[] getIntervals() {
+        if (intervalsCopy == null && intervals != null) {
+            // deferred copy of the valid range of the intervals array
+            intervalsCopy = Arrays.copyOf(intervals, intervalsSize);
+        }
+        return intervalsCopy;
+    }
+
+    public int getCodeSize() {
+        return codeSize;
+    }
+}