/*
* Copyright ( c ) 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* 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 .
*
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* 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_FINALIZERSERVICE_HPP
#define SHARE_SERVICES_FINALIZERSERVICE_HPP
#include "memory/allocation.hpp"
#include "oops/oopsHierarchy.hpp"
class InstanceKlass;
class JavaThread;
class Thread;
class FinalizerEntry : public CHeapObj<mtServiceability> {
private :
const InstanceKlass* const _ik;
const char * _codesource;
uintptr_t _objects_on_heap;
uintptr_t _total_finalizers_run;
public :
FinalizerEntry(const InstanceKlass* ik);
~FinalizerEntry();
const InstanceKlass* klass() const NOT_MANAGEMENT_RETURN_(nullptr);
const char * codesource() const NOT_MANAGEMENT_RETURN_(nullptr);
uintptr_t objects_on_heap() const NOT_MANAGEMENT_RETURN_(0 L);
uintptr_t total_finalizers_run() const NOT_MANAGEMENT_RETURN_(0 L);
void on_register() NOT_MANAGEMENT_RETURN;
void on_complete() NOT_MANAGEMENT_RETURN;
};
class FinalizerEntryClosure : public StackObj {
public :
virtual bool do_entry(const FinalizerEntry* fe) = 0 ;
};
class FinalizerService : AllStatic {
friend class ServiceThread;
private :
static bool has_work() NOT_MANAGEMENT_RETURN_(false );
static void do_concurrent_work(JavaThread* service_thread) NOT_MANAGEMENT_RETURN;
public :
static void init() NOT_MANAGEMENT_RETURN;
static void purge_unloaded() NOT_MANAGEMENT_RETURN;
static void on_register(oop finalizee, Thread* thread) NOT_MANAGEMENT_RETURN;
static void on_complete(oop finalizee, JavaThread* finalizer_thread) NOT_MANAGEMENT_RETURN;
static void do_entries(FinalizerEntryClosure* closure, Thread* thread) NOT_MANAGEMENT_RETURN;
static const FinalizerEntry* lookup(const InstanceKlass* ik, Thread* thread) NOT_MANAGEMENT_RETURN_(nullptr);
};
#endif // SHARE_SERVICES_FINALIZERSERVICE_HPP
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