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  */

    23 package org.graalvm.compiler.debug.internal.method;

    24 

    25 import org.graalvm.compiler.debug.Debug;

    26 import org.graalvm.compiler.debug.internal.DebugScope;

    27 import org.graalvm.compiler.debug.internal.DebugScope.ExtraInfo;

    28 

    29 import jdk.vm.ci.meta.ResolvedJavaMethod;

    30 

    31 public 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         if (Debug.isEnabled()) {

    58             /*

    59              * if the current compilation is not triggered from JVMCI we need a valid context root

    60              * method for method metrics

    61              */

    62             return DebugScope.getInstance().getExtraInfo() instanceof MethodMetricsRootScopeInfo ? null

    63                             : Debug.methodMetricsScope("GraalCompilerRoot", MethodMetricsRootScopeInfo.create(method), true);

    64         } else {

    65             return null;

    66         }

    67     }

    68 

    69 }