69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
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/*
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* Copyright (c) 2019, 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_SERVICES_THREADIDTABLE_HPP
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#define SHARE_SERVICES_THREADIDTABLE_HPP
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#include "memory/allocation.hpp"
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class JavaThread;
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class ThreadsList;
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class ThreadIdTableConfig;
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class ThreadIdTable : public AllStatic {
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friend class ThreadIdTableConfig;
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static volatile bool _is_initialized;
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static volatile bool _has_work;
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public:
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// Initialization
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static void lazy_initialize(const ThreadsList* threads);
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static bool is_initialized() { return _is_initialized; }
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// Lookup and list management
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static JavaThread* find_thread_by_tid(jlong tid);
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static JavaThread* add_thread(jlong tid, JavaThread* thread);
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static bool remove_thread(jlong tid);
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// Growing
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static bool has_work() { return _has_work; }
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static void do_concurrent_work(JavaThread* jt);
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private:
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static void create_table(size_t size);
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static size_t table_size();
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static double get_load_factor();
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static void check_concurrent_work();
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static void trigger_concurrent_work();
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static void grow(JavaThread* jt);
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static void item_added();
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static void item_removed();
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};
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#endif // SHARE_SERVICES_THREADIDTABLE_HPP
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