| /* |
| * Copyright (C) 2022 The Android Open Source Project |
| * |
| * Licensed 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 "chre/util/synchronized_expandable_memory_pool.h" |
| |
| #include "chre/util/synchronized_memory_pool.h" |
| #include "gtest/gtest.h" |
| |
| using chre::SynchronizedExpandableMemoryPool; |
| |
| namespace { |
| |
| class ConstructorCount { |
| public: |
| ConstructorCount(int value_) : value(value_) { |
| sConstructedCounter++; |
| } |
| ~ConstructorCount() { |
| sConstructedCounter--; |
| } |
| int getValue() { |
| return value; |
| } |
| |
| static ssize_t sConstructedCounter; |
| |
| private: |
| const int value; |
| }; |
| |
| ssize_t ConstructorCount::sConstructedCounter = 0; |
| |
| } // namespace |
| |
| TEST(SynchronizedExpandAbleMemoryPool, InitStateTest) { |
| constexpr uint8_t blockSize = 3; |
| constexpr uint8_t maxBlockCount = 5; |
| constexpr uint8_t staticBlockCount = 3; |
| SynchronizedExpandableMemoryPool<int, blockSize, maxBlockCount> |
| testMemoryPool(staticBlockCount); |
| |
| ASSERT_EQ(testMemoryPool.getFreeSpaceCount(), blockSize * maxBlockCount); |
| ASSERT_EQ(testMemoryPool.getBlockCount(), staticBlockCount); |
| } |
| |
| TEST(SynchronizedExpandAbleMemoryPool, OneAllocateAndDeallocate) { |
| constexpr uint8_t blockSize = 3; |
| constexpr uint8_t maxBlockCount = 5; |
| |
| SynchronizedExpandableMemoryPool<ConstructorCount, blockSize, maxBlockCount> |
| testMemoryPool; |
| ASSERT_EQ(testMemoryPool.getBlockCount(), 1); |
| |
| ConstructorCount *temp = testMemoryPool.allocate(10); |
| ASSERT_NE(temp, nullptr); |
| ASSERT_EQ(ConstructorCount::sConstructedCounter, 1); |
| ASSERT_EQ(testMemoryPool.getFreeSpaceCount(), blockSize * maxBlockCount - 1); |
| testMemoryPool.deallocate(temp); |
| ASSERT_EQ(ConstructorCount::sConstructedCounter, 0); |
| ASSERT_EQ(testMemoryPool.getFreeSpaceCount(), blockSize * maxBlockCount); |
| } |
| |
| TEST(SynchronizedExpandAbleMemoryPool, HysteresisDeallocation) { |
| constexpr uint8_t blockSize = 3; |
| constexpr uint8_t maxBlockCount = 4; |
| constexpr uint8_t staticBlockCount = 2; |
| |
| SynchronizedExpandableMemoryPool<int, blockSize, maxBlockCount> |
| testMemoryPool(staticBlockCount); |
| int *tempDataPtrs[blockSize * maxBlockCount]; |
| |
| for (int i = 0; i < blockSize * maxBlockCount; i++) { |
| tempDataPtrs[i] = testMemoryPool.allocate(i); |
| } |
| EXPECT_EQ(testMemoryPool.getBlockCount(), maxBlockCount); |
| |
| for (int i = blockSize * maxBlockCount - 1; |
| i >= (maxBlockCount - 1) * blockSize; i--) { |
| testMemoryPool.deallocate(tempDataPtrs[i]); |
| } |
| |
| // Should not remove the last block if it just got empty. |
| EXPECT_EQ(testMemoryPool.getBlockCount(), maxBlockCount); |
| |
| for (int i = 0; i < (maxBlockCount - 1) * blockSize; i++) { |
| testMemoryPool.deallocate(tempDataPtrs[i]); |
| } |
| |
| // Once it is empty, it should not still hold maxBlockCount as before. |
| EXPECT_EQ(testMemoryPool.getFreeSpaceCount(), blockSize * maxBlockCount); |
| EXPECT_EQ(testMemoryPool.getBlockCount(), staticBlockCount); |
| } |