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>
push(ElementType && element)40 bool FixedSizeBlockingQueue<ElementType, kSize>::push(ElementType&& element) {
41 bool success;
42 {
43 LockGuard<Mutex> lock(mMutex);
44 success = mQueue.push(std::move(element));
45 }
46 if (success) {
47 mConditionVariable.notify_one();
48 }
49 return success;
50 }
51
52 template<typename ElementType, size_t kSize>
pop()53 ElementType FixedSizeBlockingQueue<ElementType, kSize>::pop() {
54 LockGuard<Mutex> lock(mMutex);
55 while (mQueue.empty()) {
56 mConditionVariable.wait(mMutex);
57 }
58
59 ElementType element(std::move(mQueue.front()));
60 mQueue.pop();
61 return element;
62 }
63
64 template<typename ElementType, size_t kSize>
empty()65 bool FixedSizeBlockingQueue<ElementType, kSize>::empty() {
66 LockGuard<Mutex> lock(mMutex);
67 return mQueue.empty();
68 }
69
70 template<typename ElementType, size_t kSize>
size()71 size_t FixedSizeBlockingQueue<ElementType, kSize>::size() {
72 LockGuard<Mutex> lock(mMutex);
73 return mQueue.size();
74 }
75
76 template<typename ElementType, size_t kSize>
remove(size_t index)77 bool FixedSizeBlockingQueue<ElementType, kSize>::remove(size_t index) {
78 LockGuard<Mutex> lock(mMutex);
79 return mQueue.remove(index);
80 }
81
82 template<typename ElementType, size_t kCapacity>
83 ElementType& FixedSizeBlockingQueue<ElementType, kCapacity>::operator[](
84 size_t index) {
85 LockGuard<Mutex> lock(mMutex);
86 return mQueue[index];
87 }
88
89 template<typename ElementType, size_t kCapacity>
90 const ElementType& FixedSizeBlockingQueue<ElementType, kCapacity>::operator[](
91 size_t index) const {
92 LockGuard<Mutex> lock(mMutex);
93 return mQueue[index];
94 }
95
96 } // namespace chre
97
98 #endif // CHRE_UTIL_BLOCKING_QUEUE_IMPL_H_
99