apetushkov@9858: /*
apetushkov@9858:  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
apetushkov@9858:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
apetushkov@9858:  *
apetushkov@9858:  * This code is free software; you can redistribute it and/or modify it
apetushkov@9858:  * under the terms of the GNU General Public License version 2 only, as
apetushkov@9858:  * published by the Free Software Foundation.
apetushkov@9858:  *
apetushkov@9858:  * This code is distributed in the hope that it will be useful, but WITHOUT
apetushkov@9858:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
apetushkov@9858:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
apetushkov@9858:  * version 2 for more details (a copy is included in the LICENSE file that
apetushkov@9858:  * accompanied this code).
apetushkov@9858:  *
apetushkov@9858:  * You should have received a copy of the GNU General Public License version
apetushkov@9858:  * 2 along with this work; if not, write to the Free Software Foundation,
apetushkov@9858:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
apetushkov@9858:  *
apetushkov@9858:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
apetushkov@9858:  * or visit www.oracle.com if you need additional information or have any
apetushkov@9858:  * questions.
apetushkov@9858:  *
apetushkov@9858:  */
apetushkov@9858: 
apetushkov@9858: #ifndef SHARE_VM_JFR_WRITERS_JFRPOSITION_HPP
apetushkov@9858: #define SHARE_VM_JFR_WRITERS_JFRPOSITION_HPP
apetushkov@9858: 
apetushkov@9858: #include "utilities/debug.hpp"
apetushkov@9858: #include "utilities/globalDefinitions.hpp"
apetushkov@9858: 
apetushkov@9858: template <typename AP> // AllocationPolicy
apetushkov@9858: class Position : public AP {
apetushkov@9858:  private:
apetushkov@9858:   const u1* _start_pos; // logical start
apetushkov@9858:   u1* _current_pos;
apetushkov@9858:   const u1* _end_pos;
apetushkov@9858: 
apetushkov@9858:  protected:
apetushkov@9858:   const u1* start_pos() const;
apetushkov@9858:   void set_start_pos(const u1* position);
apetushkov@9858:   u1* current_pos();
apetushkov@9858:   void set_current_pos(const u1* new_position);
apetushkov@9858:   void set_current_pos(size_t size);
apetushkov@9858:   const u1* end_pos() const;
apetushkov@9858:   void set_end_pos(const u1* position);
apetushkov@9858:   Position(const u1* start_pos, size_t size);
apetushkov@9858:   Position();
apetushkov@9858: 
apetushkov@9858:  public:
apetushkov@9858:   size_t available_size() const;
bulasevich@9947:   int64_t used_offset() const;
bulasevich@9947:   int64_t current_offset() const;
apetushkov@9858:   size_t used_size() const;
apetushkov@9858:   void reset();
apetushkov@9858: };
apetushkov@9858: 
apetushkov@9858: #endif // SHARE_VM_JFR_WRITERS_JFRPOSITION_HPP