001/*
002 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.truffle;
024
025import static com.oracle.graal.truffle.TruffleCompilerOptions.*;
026
027import com.oracle.truffle.api.*;
028
029public class CounterAndTimeBasedCompilationPolicy extends CounterBasedCompilationPolicy {
030
031    @Override
032    public boolean shouldCompile(CompilationProfile profile, CompilerOptions options) {
033        if (super.shouldCompile(profile, options)) {
034            long threshold = TruffleTimeThreshold.getValue();
035
036            if (options instanceof GraalCompilerOptions) {
037                threshold = Math.max(threshold, ((GraalCompilerOptions) options).getMinTimeThreshold());
038            }
039
040            long time = profile.getTimestamp();
041            if (time == 0) {
042                throw new AssertionError();
043            }
044            long timeElapsed = System.nanoTime() - time;
045            if (timeElapsed > threshold * 1_000_000) {
046                profile.deferCompilation();
047                return false;
048            }
049            return true;
050        } else {
051            return false;
052        }
053    }
054
055}