| /** @file |
| |
| RecMutex definitions |
| |
| @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/ink_config.h" |
| #include "I_RecMutex.h" |
| |
| void |
| rec_mutex_init(RecMutex *m, const char *) |
| { |
| m->nthread_holding = 0; |
| m->thread_holding = ink_thread_null(); |
| ink_mutex_init(&(m->the_mutex)); |
| } |
| |
| void |
| rec_mutex_destroy(RecMutex *m) |
| { |
| ink_assert(m->nthread_holding == 0); |
| ink_assert(m->thread_holding == ink_thread_null()); |
| ink_mutex_destroy(&(m->the_mutex)); |
| } |
| |
| void |
| rec_mutex_acquire(RecMutex *m) |
| { |
| ink_thread this_thread = ink_thread_self(); |
| |
| if (m->thread_holding != this_thread) { |
| ink_mutex_acquire(&(m->the_mutex)); |
| m->thread_holding = this_thread; |
| } |
| |
| m->nthread_holding++; |
| } |
| |
| void |
| rec_mutex_release(RecMutex *m) |
| { |
| if (m->nthread_holding != 0) { |
| m->nthread_holding--; |
| if (m->nthread_holding == 0) { |
| m->thread_holding = ink_thread_null(); |
| ink_mutex_release(&(m->the_mutex)); |
| } |
| } |
| } |