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