| // Protocol Buffers - Google's data interchange format |
| // Copyright 2008 Google Inc. All rights reserved. |
| // https://developers.google.com/protocol-buffers/ |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef GOOGLE_PROTOBUF_ARENA_CONFIG_H__ |
| #define GOOGLE_PROTOBUF_ARENA_CONFIG_H__ |
| |
| #include <atomic> |
| #include <cstddef> |
| |
| // Must be included last. |
| #include "google/protobuf/port_def.inc" |
| |
| namespace google { |
| namespace protobuf { |
| namespace internal { |
| namespace arena_config_internal { |
| |
| // We use an atomic here only for correctness so that we can read/write |
| // concurrently. We don't have memory order requirements so we use relaxed |
| // memory ordering. |
| PROTOBUF_EXPORT extern std::atomic<size_t> default_arena_max_block_size; |
| |
| } // namespace arena_config_internal |
| |
| // The default value to use for DefaultArenaMaxBlockSize when |
| // SetDefaultArenaMaxBlockSize hasn't been called. |
| PROTOBUF_EXPORT extern const size_t kDefaultDefaultArenaMaxBlockSize; |
| |
| // The default value to use for arena max block size when no value is provided |
| // in ArenaOptions. |
| inline size_t GetDefaultArenaMaxBlockSize() { |
| return arena_config_internal::default_arena_max_block_size.load( |
| std::memory_order_relaxed); |
| } |
| inline void SetDefaultArenaMaxBlockSize(size_t default_arena_max_block_size) { |
| return arena_config_internal::default_arena_max_block_size.store( |
| default_arena_max_block_size, std::memory_order_relaxed); |
| } |
| |
| } // namespace internal |
| } // namespace protobuf |
| } // namespace google |
| |
| #include "google/protobuf/port_undef.inc" |
| |
| #endif // GOOGLE_PROTOBUF_ARENA_CONFIG_H__ |