Mercurial > hg > truffle
view src/share/vm/services/serviceUtil.hpp @ 11860:762dc2f23d1c
InvokeWithException: make next successor a special begin node which has the same locationidentity as the invoke
InvokeWithExceptionNode has the unpleasant property that it is a ControlSplit
and MemoryCheckPoint at the same time. In terms of scheduling, a node cannot
be placed after a ControlSplit node as it denotes the end of a block. Thus,
instead of connecting a FloatingReadNode to the InvokeWithException node
directly (as lastLocationAccess), we point rather to the BeginNode
(non-exceptional case) or ExceptionBeginNode.
To preserve consistency regarding memory dependencies, the former node must be
also a MemoryCheckPoint.
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Wed, 02 Oct 2013 11:16:21 +0200 |
parents | 070d523b96a7 |
children |
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/* * Copyright (c) 2003, 2012, 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_SERVICES_SERVICEUTIL_HPP #define SHARE_VM_SERVICES_SERVICEUTIL_HPP #include "classfile/systemDictionary.hpp" #include "oops/objArrayOop.hpp" // // 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; } // 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 Klass* k = java_lang_Class::as_Klass(o); if (k->is_klass()) { // if it's a class for an object, an object array, or // primitive (type) array then it's visible. if (k->oop_is_instance()) { return true; } if (k->oop_is_objArray()) { return true; } if (k->oop_is_typeArray()) { return true; } } return false; } // object arrays are visible if they aren't system object arrays if (o->is_objArray()) { return true; } // type arrays are visible if (o->is_typeArray()) { return true; } // everything else (Method*s, ...) aren't visible return false; }; // end of visible_oop() }; #endif // SHARE_VM_SERVICES_SERVICEUTIL_HPP