--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/CompilationStatistics.java	Wed Jun 03 15:47:54 2015 +0200
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2012, 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.oracle.jvmci.hotspot;
+
+import static java.lang.Thread.*;
+
+import java.io.*;
+import java.lang.annotation.*;
+import java.lang.management.*;
+import java.lang.reflect.*;
+import java.util.*;
+import java.util.concurrent.*;
+
+import com.sun.management.ThreadMXBean;
+
+@SuppressWarnings("unused")
+public final class CompilationStatistics {
+
+    private static final long RESOLUTION = 100000000;
+    private static final boolean ENABLED = Boolean.getBoolean("graal.comp.stats");
+
+    private static final CompilationStatistics DUMMY = new CompilationStatistics(null, false);
+
+    private static ConcurrentLinkedDeque<CompilationStatistics> list = new ConcurrentLinkedDeque<>();
+
+    private static final ThreadLocal<Deque<CompilationStatistics>> current = new ThreadLocal<Deque<CompilationStatistics>>() {
+
+        @Override
+        protected Deque<CompilationStatistics> initialValue() {
+            return new ArrayDeque<>();
+        }
+    };
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    private static @interface NotReported {
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    private static @interface TimeValue {
+    }
+
+    private static long zeroTime = System.nanoTime();
+
+    private static long getThreadAllocatedBytes() {
+        ThreadMXBean thread = (ThreadMXBean) ManagementFactory.getThreadMXBean();
+        return thread.getThreadAllocatedBytes(currentThread().getId());
+    }
+
+    @NotReported private final long startTime;
+    @NotReported private long threadAllocatedBytesStart;
+
+    private int bytecodeCount;
+    private int codeSize;
+    @TimeValue private long duration;
+    private long memoryUsed;
+    private final boolean osr;
+    private final String holder;
+    private final String name;
+    private final String signature;
+
+    private CompilationStatistics(HotSpotResolvedJavaMethod method, boolean osr) {
+        this.osr = osr;
+        if (method != null) {
+            holder = method.getDeclaringClass().getName();
+            name = method.getName();
+            signature = method.getSignature().toMethodDescriptor();
+            startTime = System.nanoTime();
+            bytecodeCount = method.getCodeSize();
+            threadAllocatedBytesStart = getThreadAllocatedBytes();
+        } else {
+            holder = "";
+            name = "";
+            signature = "";
+            startTime = 0;
+        }
+    }
+
+    public void finish(HotSpotResolvedJavaMethod method, HotSpotInstalledCode code) {
+        if (ENABLED) {
+            duration = System.nanoTime() - startTime;
+            codeSize = (int) code.getCodeSize();
+            memoryUsed = getThreadAllocatedBytes() - threadAllocatedBytesStart;
+            if (current.get().getLast() != this) {
+                throw new RuntimeException("mismatch in finish()");
+            }
+            current.get().removeLast();
+        }
+    }
+
+    public static CompilationStatistics current() {
+        return current.get().isEmpty() ? null : current.get().getLast();
+    }
+
+    public static CompilationStatistics create(HotSpotResolvedJavaMethod method, boolean isOSR) {
+        if (ENABLED) {
+            CompilationStatistics stats = new CompilationStatistics(method, isOSR);
+            list.add(stats);
+            current.get().addLast(stats);
+            return stats;
+        } else {
+            return DUMMY;
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    public static void clear(String dumpName) {
+        if (!ENABLED) {
+            return;
+        }
+        try {
+            ConcurrentLinkedDeque<CompilationStatistics> snapshot = list;
+            long snapshotZeroTime = zeroTime;
+
+            list = new ConcurrentLinkedDeque<>();
+            zeroTime = System.nanoTime();
+
+            Date now = new Date();
+            String dateString = (now.getYear() + 1900) + "-" + (now.getMonth() + 1) + "-" + now.getDate() + "-" + now.getHours() + "" + now.getMinutes();
+
+            dumpCompilations(snapshot, dumpName, dateString);
+
+            try (FileOutputStream fos = new FileOutputStream("timeline_" + dateString + "_" + dumpName + ".csv", true); PrintStream out = new PrintStream(fos)) {
+
+                long[] timeSpent = new long[10000];
+                int maxTick = 0;
+                for (CompilationStatistics stats : snapshot) {
+                    long start = stats.startTime - snapshotZeroTime;
+                    long duration = stats.duration;
+                    if (start < 0) {
+                        duration -= -start;
+                        start = 0;
+                    }
+
+                    int tick = (int) (start / RESOLUTION);
+                    long timeLeft = RESOLUTION - (start % RESOLUTION);
+
+                    while (tick < timeSpent.length && duration > 0) {
+                        if (tick > maxTick) {
+                            maxTick = tick;
+                        }
+                        timeSpent[tick] += Math.min(timeLeft, duration);
+                        duration -= timeLeft;
+                        tick++;
+                        timeLeft = RESOLUTION;
+                    }
+                }
+                String timelineName = System.getProperty("stats.timeline.name");
+                if (timelineName != null && !timelineName.isEmpty()) {
+                    out.print(timelineName + "\t");
+                }
+                for (int i = 0; i <= maxTick; i++) {
+                    out.print((timeSpent[i] * 100 / RESOLUTION) + "\t");
+                }
+                out.println();
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    protected static void dumpCompilations(ConcurrentLinkedDeque<CompilationStatistics> snapshot, String dumpName, String dateString) throws IllegalAccessException, FileNotFoundException {
+        String fileName = "compilations_" + dateString + "_" + dumpName + ".csv";
+        try (PrintStream out = new PrintStream(fileName)) {
+            // output the list of all compilations
+
+            Field[] declaredFields = CompilationStatistics.class.getDeclaredFields();
+            ArrayList<Field> fields = new ArrayList<>();
+            for (Field field : declaredFields) {
+                if (!Modifier.isStatic(field.getModifiers()) && !field.isAnnotationPresent(NotReported.class)) {
+                    fields.add(field);
+                }
+            }
+            for (Field field : fields) {
+                out.print(field.getName() + "\t");
+            }
+            out.println();
+            for (CompilationStatistics stats : snapshot) {
+                for (Field field : fields) {
+                    if (field.isAnnotationPresent(TimeValue.class)) {
+                        double value = field.getLong(stats) / 1000000d;
+                        out.print(String.format(Locale.ENGLISH, "%.3f", value) + "\t");
+                    } else {
+                        out.print(field.get(stats) + "\t");
+                    }
+                }
+                out.println();
+            }
+        }
+    }
+}