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/*
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* Copyright (c) 2016, 2018, 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_JFR_WRITERS_JFRMEMORYWRITERHOST_HPP
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#define SHARE_VM_JFR_WRITERS_JFRMEMORYWRITERHOST_HPP
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#include "jfr/writers/jfrStorageHost.inline.hpp"
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#ifdef ASSERT
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class ExclusiveAccessAssert {
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private:
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bool _acquired;
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public:
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ExclusiveAccessAssert() : _acquired(false) {}
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void acquire() { assert_non_acquired(); _acquired = true; }
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void release() { assert_acquired(); _acquired = false; }
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bool is_acquired() const { return _acquired; }
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void assert_acquired() const { assert(_acquired, "Not acquired!"); }
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void assert_non_acquired() const { assert(!_acquired, "Already acquired!"); }
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};
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#else
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class ExclusiveAccessAssert {};
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#endif
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template <typename Adapter, typename AP, typename AccessAssert = ExclusiveAccessAssert>
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class MemoryWriterHost : public StorageHost<Adapter, AP> {
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debug_only(AccessAssert _access;)
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public:
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typedef typename Adapter::StorageType StorageType;
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protected:
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void bytes(void* dest, const void* buf, size_t len);
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MemoryWriterHost(StorageType* storage, Thread* thread);
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MemoryWriterHost(StorageType* storage, size_t size);
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MemoryWriterHost(Thread* thread);
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debug_only(bool is_acquired() const;)
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public:
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void acquire();
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void release();
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};
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template <typename Adapter, typename AP>
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class AcquireReleaseMemoryWriterHost : public MemoryWriterHost<Adapter, AP> {
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public:
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typedef typename Adapter::StorageType StorageType;
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AcquireReleaseMemoryWriterHost(StorageType* storage, Thread* thread);
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AcquireReleaseMemoryWriterHost(StorageType* storage, size_t size);
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AcquireReleaseMemoryWriterHost(Thread* thread);
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~AcquireReleaseMemoryWriterHost();
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};
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#endif // SHARE_VM_JFR_WRITERS_JFRMEMORYWRITERHOST_HPP
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