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         /*
  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 }