src/shared/crw_lock.cpp

   1 /*
   2  * libsensord-share
   3  *
   4  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #include "crw_lock.h"
  21 #include "common.h"
  22
  23 crw_lock::crw_lock()
  24 {
  25         m_rw_lock = PTHREAD_RWLOCK_INITIALIZER;
  26 }
  27
  28 crw_lock::~crw_lock()
  29 {
  30         pthread_rwlock_destroy(&m_rw_lock);
  31 }
  32
  33 void crw_lock::read_lock()
  34 {
  35         cbase_lock::lock(LOCK_TYPE_READ, "read lock", __MODULE__, __func__, __LINE__);
  36 }
  37
  38 void crw_lock::write_lock()
  39 {
  40         cbase_lock::lock(LOCK_TYPE_WRITE, "write lock", __MODULE__, __func__, __LINE__);
  41 }
  42
  43 int crw_lock::read_lock_impl(void)
  44 {
  45         return pthread_rwlock_rdlock(&m_rw_lock);
  46 }
  47 int crw_lock::write_lock_impl(void)
  48 {
  49         return pthread_rwlock_wrlock(&m_rw_lock);
  50 }
  51
  52 int crw_lock::try_read_lock_impl(void)
  53 {
  54         return pthread_rwlock_tryrdlock(&m_rw_lock);
  55 }
  56
  57 int crw_lock::try_write_lock_impl(void)
  58 {
  59         return pthread_rwlock_trywrlock(&m_rw_lock);
  60 }
  61
  62 int crw_lock::unlock_impl()
  63 {
  64         return pthread_rwlock_unlock(&m_rw_lock);
  65 }