| /* |
| * Copyright (c) 2014, 2018, 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGEQUEUE_HPP |
| #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGEQUEUE_HPP |
| |
| #include "memory/allocation.hpp" |
| #include "jfr/leakprofiler/chains/edge.hpp" |
| |
| class JfrVirtualMemory; |
| |
| class EdgeQueue : public CHeapObj<mtTracing> { |
| private: |
| JfrVirtualMemory* _vmm; |
| const size_t _reservation_size_bytes; |
| const size_t _commit_block_size_bytes; |
| mutable size_t _top_index; |
| mutable size_t _bottom_index; |
| public: |
| EdgeQueue(size_t reservation_size_bytes, size_t commit_block_size_bytes); |
| ~EdgeQueue(); |
| |
| bool initialize(); |
| |
| void add(const Edge* parent, const oop* ref); |
| const Edge* remove() const; |
| const Edge* element_at(size_t index) const; |
| |
| size_t top() const; |
| size_t bottom() const; |
| bool is_empty() const; |
| bool is_full() const; |
| |
| size_t reserved_size() const; |
| size_t live_set() const; |
| size_t sizeof_edge() const; // with alignments |
| }; |
| |
| #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_EDGEQUEUE_HPP |