| /** |
| @file AcidPtr defines global LockPools for accessing and committing |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include "tscore/AcidPtr.h" |
| |
| const int READLOCKCOUNT = 61; // a prime larger than number of readers |
| |
| AcidPtrMutex & |
| AcidPtrMutexGet(void const *ptr) |
| { |
| static LockPool<AcidPtrMutex> read_locks(READLOCKCOUNT); |
| static_assert(sizeof(void *) == sizeof(size_t)); |
| return read_locks.getMutex(reinterpret_cast<size_t>(ptr)); |
| } |
| |
| const int WRITELOCKCOUNT = 31; // a prime larger than number of writers |
| |
| AcidCommitMutex & |
| AcidCommitMutexGet(void const *ptr) |
| { |
| static LockPool<AcidCommitMutex> write_locks(WRITELOCKCOUNT); |
| static_assert(sizeof(void *) == sizeof(size_t)); |
| return write_locks.getMutex(reinterpret_cast<size_t>(ptr)); |
| } |