| /* |
| * Copyright (c) 2016, 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. |
| * |
| * 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_JFR_WRITERS_JFRSTORAGEHOST_INLINE_HPP |
| #define SHARE_JFR_WRITERS_JFRSTORAGEHOST_INLINE_HPP |
| |
| #include "jfr/writers/jfrStorageHost.hpp" |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::bind() { |
| if (is_backed()) { |
| this->hard_reset(); |
| assert(is_valid(), "invariant"); |
| return; |
| } |
| this->set_start_pos(NULL); |
| this->set_current_pos((const u1*)NULL); |
| this->set_end_pos(NULL); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::soft_reset() { |
| this->set_start_pos(this->current_pos()); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::hard_reset() { |
| this->set_start_pos(_adapter.pos()); |
| this->set_current_pos(_adapter.pos()); |
| this->set_end_pos(_adapter.end()); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::cancel() { |
| this->set_end_pos(NULL); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline bool StorageHost<Adapter, AP>::is_backed() { |
| return _adapter.storage() != NULL; |
| } |
| |
| template <typename Adapter, typename AP> |
| inline bool StorageHost<Adapter, AP>::accommodate(size_t used, size_t requested) { |
| if (!_adapter.flush(used, requested)) { |
| this->cancel(); |
| return false; |
| } |
| assert(is_backed(), "invariant"); |
| this->hard_reset(); |
| this->set_current_pos(used); |
| return true; |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::commit() { |
| if (this->is_valid()) { |
| assert(_adapter.pos() == this->start_pos(), "invariant"); |
| assert(_adapter.end() == this->end_pos(), "invariant"); |
| u1* new_position = this->current_pos(); |
| _adapter.commit(new_position); |
| this->set_start_pos(new_position); |
| } |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::release() { |
| _adapter.release(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline StorageHost<Adapter, AP>::StorageHost(typename Adapter::StorageType* storage, Thread* thread) : Position<AP>(), _adapter(storage, thread) { |
| bind(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline StorageHost<Adapter, AP>::StorageHost(typename Adapter::StorageType* storage, size_t size) : Position<AP>(), _adapter(storage, size) { |
| bind(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline StorageHost<Adapter, AP>::StorageHost(Thread* thread) : Position<AP>(), _adapter(thread) { |
| bind(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline bool StorageHost<Adapter, AP>::is_valid() const { |
| return this->end_pos() != NULL; |
| } |
| |
| template <typename Adapter, typename AP> |
| inline typename Adapter::StorageType* StorageHost<Adapter, AP>::storage() { |
| return _adapter.storage(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::set_storage(typename Adapter::StorageType* storage) { |
| _adapter.set_storage(storage); |
| bind(); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::flush() { |
| this->accommodate(this->is_valid() ? this->used_size() : 0, 0); |
| } |
| |
| template <typename Adapter, typename AP> |
| inline void StorageHost<Adapter, AP>::seek(intptr_t offset) { |
| if (this->is_valid()) { |
| assert(offset >= 0, "negative offsets not supported"); |
| assert(this->start_pos() + offset <= this->end_pos(), "invariant"); |
| assert(this->start_pos() + offset >= this->start_pos(), "invariant"); |
| this->set_current_pos(this->start_pos() + offset); |
| } |
| } |
| |
| #endif // SHARE_JFR_WRITERS_JFRSTORAGEHOST_INLINE_HPP |