Mercurial > hg > graal-compiler
view src/share/vm/services/serviceUtil.hpp @ 1141:b1f619d38249
6914002: unsigned compare problem after 5057818
Reviewed-by: kvn, twisti
author | never |
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date | Tue, 05 Jan 2010 16:12:26 -0800 |
parents | a61af66fc99e |
children | 4ce7240d622c |
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/* * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // // Serviceability utility functions. // (Shared by MM and JVMTI). // class ServiceUtil : public AllStatic { public: // Return true if oop represents an object that is "visible" // to the java world. static inline bool visible_oop(oop o) { // the sentinel for deleted handles isn't visible if (o == JNIHandles::deleted_handle()) { return false; } // ignore KlassKlass if (o->is_klass()) { return false; } // instance if (o->is_instance()) { // instance objects are visible if (o->klass() != SystemDictionary::class_klass()) { return true; } if (java_lang_Class::is_primitive(o)) { return true; } // java.lang.Classes are visible o = java_lang_Class::as_klassOop(o); if (o->is_klass()) { // if it's a class for an object, an object array, or // primitive (type) array then it's visible. klassOop klass = (klassOop)o; if (Klass::cast(klass)->oop_is_instance()) { return true; } if (Klass::cast(klass)->oop_is_objArray()) { return true; } if (Klass::cast(klass)->oop_is_typeArray()) { return true; } } return false; } // object arrays are visible if they aren't system object arrays if (o->is_objArray()) { objArrayOop array = (objArrayOop)o; if (array->klass() != Universe::systemObjArrayKlassObj()) { return true; } else { return false; } } // type arrays are visible if (o->is_typeArray()) { return true; } // everything else (methodOops, ...) aren't visible return false; }; // end of visible_oop() };