Mercurial > hg > graal-compiler
view src/share/vm/ci/ciNullObject.hpp @ 17108:dbb08e742d87
Add optional graph dump before each compiler phase.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 15 Sep 2014 17:16:53 +0200 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 1999, 2010, 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. * */ #ifndef SHARE_VM_CI_CINULLOBJECT_HPP #define SHARE_VM_CI_CINULLOBJECT_HPP #include "ci/ciClassList.hpp" #include "ci/ciObject.hpp" #include "ci/ciUtilities.hpp" // ciNullObject // // This class represents a null reference in the VM. class ciNullObject : public ciObject { CI_PACKAGE_ACCESS private: ciNullObject() : ciObject() {} const char* type_string() { return "ciNullObject"; } void print_impl(outputStream* st); public: // Is this ciObject a Java Language Object? That is, // is the ciObject an instance or an array bool is_java_object() { return true; } // What kind of ciObject is this? bool is_null_object() const { return true; } bool is_classless() const { return true; } // Get the distinguished instance of this klass. static ciNullObject* make(); }; #endif // SHARE_VM_CI_CINULLOBJECT_HPP