Mercurial > hg > truffle
diff src/share/vm/runtime/serviceThread.hpp @ 2195:bf8517f4e4d0
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
Summary: Defer posting events from the compiler thread: use service thread
Reviewed-by: coleenp, dholmes, never, dcubed
author | kamg |
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date | Wed, 02 Feb 2011 14:38:01 -0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/serviceThread.hpp Wed Feb 02 14:38:01 2011 -0500 @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2011, 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_RUNTIME_SERVICETHREAD_HPP +#define SHARE_VM_RUNTIME_SERVICETHREAD_HPP + +#include "runtime/thread.hpp" + +// A JavaThread for low memory detection support and JVMTI +// compiled-method-load events. +class ServiceThread : public JavaThread { + friend class VMStructs; + private: + + static ServiceThread* _instance; + + static void service_thread_entry(JavaThread* thread, TRAPS); + ServiceThread(ThreadFunction entry_point) : JavaThread(entry_point) {}; + + public: + static void initialize(); + + // Hide this thread from external view. + bool is_hidden_from_external_view() const { return true; } + + // Returns true if the passed thread is the service thread. + static bool is_service_thread(Thread* thread); +}; + +#endif // SHARE_VM_RUNTIME_SERVICETHREAD_HPP