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6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"

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Defer posting events from the compiler thread: use service thread

Reviewed-by: coleenp, dholmes, never, dcubed
This commit is contained in:
Keith McGuigan 2011-02-02 14:38:01 -05:00
parent 052aed6276
commit 8a44936bb0
21 changed files with 617 additions and 298 deletions
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51
hotspot/src/share/vm/runtime/serviceThread.hpp Normal file
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/*
* 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