MethodMetricsRootScopeInfo.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23package org.graalvm.compiler.debug.internal.method;
24
25import org.graalvm.compiler.debug.Debug;
26import org.graalvm.compiler.debug.internal.DebugScope;
27import org.graalvm.compiler.debug.internal.DebugScope.ExtraInfo;
28
29import jdk.vm.ci.meta.ResolvedJavaMethod;
30
31public class MethodMetricsRootScopeInfo implements ExtraInfo {
32    protected final ResolvedJavaMethod rootMethod;
33
34    MethodMetricsRootScopeInfo(ResolvedJavaMethod rootMethod) {
35        this.rootMethod = rootMethod;
36    }
37
38    public ResolvedJavaMethod getRootMethod() {
39        return rootMethod;
40    }
41
42    public static MethodMetricsRootScopeInfo create(ResolvedJavaMethod rootMethod) {
43        return new MethodMetricsRootScopeInfo(rootMethod);
44    }
45
46    /**
47     * Creates and returns a {@link org.graalvm.compiler.debug.Debug.Scope scope} iff there is no
48     * existing {@linkplain org.graalvm.compiler.debug.internal.DebugScope.ExtraInfo extraInfo}
49     * object of type {@link MethodMetricsRootScopeInfo} present in the current {@link DebugScope
50     * scope}.
51     *
52     * @param method
53     * @return a new {@link org.graalvm.compiler.debug.Debug.Scope scope} or {@code null} iff there
54     *         is already an existing one on the scope
55     */
56    public static Debug.Scope createRootScopeIfAbsent(ResolvedJavaMethod method) {
57        /*
58         * if the current compilation is not triggered from JVMCI we need a valid context root
59         * method for method metrics
60         */
61        return DebugScope.getInstance().getExtraInfo() instanceof MethodMetricsRootScopeInfo ? null : Debug.methodMetricsScope("GraalCompilerRoot", MethodMetricsRootScopeInfo.create(method), true);
62    }
63
64}
65