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0bf8e8d264
Decrease the default wait delay for mark thread initialization to accomodate very short running applications. Reviewed-by: tbenson, mgerdin
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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* Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_GC_SHARED_CONCURRENTGCTHREAD_HPP
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#define SHARE_VM_GC_SHARED_CONCURRENTGCTHREAD_HPP
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#include "runtime/thread.hpp"
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#include "utilities/macros.hpp"
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class ConcurrentGCThread: public NamedThread {
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friend class VMStructs;
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protected:
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bool volatile _should_terminate;
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bool _has_terminated;
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// Create and start the thread (setting it's priority high.)
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void create_and_start();
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// Do initialization steps in the thread: record stack base and size,
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// init thread local storage, set JNI handle block.
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void initialize_in_thread();
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// Wait until Universe::is_fully_initialized();
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void wait_for_universe_init();
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// Record that the current thread is terminating, and will do more
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// concurrent work.
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void terminate();
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public:
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ConcurrentGCThread();
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// Tester
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bool is_ConcurrentGC_thread() const { return true; }
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};
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// The SurrogateLockerThread is used by concurrent GC threads for
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// manipulating Java monitors, in particular, currently for
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// manipulating the pending_list_lock. XXX
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class SurrogateLockerThread: public JavaThread {
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friend class VMStructs;
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public:
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enum SLT_msg_type {
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empty = 0, // no message
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acquirePLL, // acquire pending list lock
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releaseAndNotifyPLL // notify and release pending list lock
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};
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private:
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// the following are shared with the CMSThread
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SLT_msg_type _buffer; // communication buffer
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Monitor _monitor; // monitor controlling buffer
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BasicLock _basicLock; // used for PLL locking
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public:
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static SurrogateLockerThread* make(TRAPS);
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// Terminate VM with error message that SLT needed but not yet created.
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static void report_missing_slt();
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SurrogateLockerThread();
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bool is_hidden_from_external_view() const { return true; }
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void loop(); // main method
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void manipulatePLL(SLT_msg_type msg);
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};
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#endif // SHARE_VM_GC_SHARED_CONCURRENTGCTHREAD_HPP
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