--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/AbstractJavaProfile.java	Wed May 27 00:36:16 2015 +0200
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 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 com.oracle.jvmci.meta;
+
+/**
+ * This object holds probability information for a set of items that were profiled at a specific
+ * BCI. The precision of the supplied values may vary, but a runtime that provides this information
+ * should be aware that it will be used to guide performance-critical decisions like speculative
+ * inlining, etc.
+ *
+ * @param <T> a subclass of AbstractProfiledItem
+ * @param <U> the class of the items that are profiled at the specific BCI and for which
+ *            probabilities are stored. E.g., a ResolvedJavaType or a ResolvedJavaMethod.
+ */
+public abstract class AbstractJavaProfile<T extends AbstractProfiledItem<U>, U> {
+
+    private final double notRecordedProbability;
+    private final T[] pitems;
+
+    public AbstractJavaProfile(double notRecordedProbability, T[] pitems) {
+        this.pitems = pitems;
+        assert !Double.isNaN(notRecordedProbability);
+        this.notRecordedProbability = notRecordedProbability;
+        assert isSorted();
+        assert totalProbablility() >= 0 && totalProbablility() <= 1.0001 : totalProbablility() + " " + this;
+    }
+
+    private double totalProbablility() {
+        double total = notRecordedProbability;
+        for (T item : pitems) {
+            total += item.probability;
+        }
+        return total;
+    }
+
+    /**
+     * Determines if an array of profiled items are sorted in descending order of their
+     * probabilities.
+     */
+    private boolean isSorted() {
+        for (int i = 1; i < pitems.length; i++) {
+            if (pitems[i - 1].getProbability() < pitems[i].getProbability()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Returns the estimated probability of all types that could not be recorded due to profiling
+     * limitations.
+     *
+     * @return double value &ge; 0.0 and &le; 1.0
+     */
+    public double getNotRecordedProbability() {
+        return notRecordedProbability;
+    }
+
+    protected T[] getItems() {
+        return pitems;
+    }
+
+    /**
+     * Searches for an entry of a given resolved Java type.
+     *
+     * @param type the type for which an entry should be searched
+     * @return the entry or null if no entry for this type can be found
+     */
+    public T findEntry(ResolvedJavaType type) {
+        if (pitems != null) {
+            for (T pt : pitems) {
+                if (pt.getItem().equals(type)) {
+                    return pt;
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append(this.getClass().getName());
+        builder.append("[");
+        if (pitems != null) {
+            for (T pt : pitems) {
+                builder.append(pt.toString());
+                builder.append(", ");
+            }
+        }
+        builder.append(this.notRecordedProbability);
+        builder.append("]");
+        return builder.toString();
+    }
+
+    public boolean isIncluded(U item) {
+        if (this.getNotRecordedProbability() > 0.0) {
+            return true;
+        } else {
+            for (int i = 0; i < getItems().length; i++) {
+                T pitem = getItems()[i];
+                U curType = pitem.getItem();
+                if (curType == item) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == this) {
+            return true;
+        }
+        if (!(obj instanceof AbstractJavaProfile)) {
+            return false;
+        }
+        AbstractJavaProfile<?, ?> that = (AbstractJavaProfile<?, ?>) obj;
+        if (that.notRecordedProbability != notRecordedProbability) {
+            return false;
+        }
+        if (that.pitems.length != pitems.length) {
+            return false;
+        }
+        for (int i = 0; i < pitems.length; ++i) {
+            if (!pitems[i].equals(that.pitems[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public int hashCode() {
+        return (int) Double.doubleToLongBits(notRecordedProbability) + pitems.length * 13;
+    }
+}