1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef CHRE_UTIL_FIXED_SIZE_BLOCKING_QUEUE_IMPL_H_
18 #define CHRE_UTIL_FIXED_SIZE_BLOCKING_QUEUE_IMPL_H_
19
20 #include "chre/util/fixed_size_blocking_queue.h"
21 #include "chre/util/lock_guard.h"
22
23 namespace chre {
24
25 template<typename ElementType, size_t kSize>
push(const ElementType & element)26 bool FixedSizeBlockingQueue<ElementType, kSize>::push(
27 const ElementType& element) {
28 bool success;
29 {
30 LockGuard<Mutex> lock(mMutex);
31 success = mQueue.push(element);
32 }
33 if (success) {
34 mConditionVariable.notify_one();
35 }
36 return success;
37 }
38
39 template<typename ElementType, size_t kSize>
pop()40 ElementType FixedSizeBlockingQueue<ElementType, kSize>::pop() {
41 LockGuard<Mutex> lock(mMutex);
42 while (mQueue.empty()) {
43 mConditionVariable.wait(mMutex);
44 }
45
46 ElementType element(std::move(mQueue.front()));
47 mQueue.pop();
48 return element;
49 }
50
51 template<typename ElementType, size_t kSize>
empty()52 bool FixedSizeBlockingQueue<ElementType, kSize>::empty() {
53 LockGuard<Mutex> lock(mMutex);
54 return mQueue.empty();
55 }
56
57 } // namespace chre
58
59 #endif // CHRE_UTIL_BLOCKING_QUEUE_IMPL_H_
60