reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 1 | // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "base/test/test_discardable_memory_allocator.h" |
| 6 | |
jbroman | ef35fe9 | 2016-03-16 10:52:06 +0900 | [diff] [blame] | 7 | #include <cstdint> |
| 8 | #include <cstring> |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 9 | |
dcheng | d0e0af6 | 2016-03-25 09:15:56 +0900 | [diff] [blame] | 10 | #include "base/logging.h" |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 11 | #include "base/memory/discardable_memory.h" |
dcheng | cc8e4d8 | 2016-04-05 06:25:51 +0900 | [diff] [blame] | 12 | #include "base/memory/ptr_util.h" |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 13 | |
| 14 | namespace base { |
| 15 | namespace { |
| 16 | |
| 17 | class DiscardableMemoryImpl : public DiscardableMemory { |
| 18 | public: |
jbroman | ef35fe9 | 2016-03-16 10:52:06 +0900 | [diff] [blame] | 19 | explicit DiscardableMemoryImpl(size_t size) |
| 20 | : data_(new uint8_t[size]), size_(size) {} |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 21 | |
| 22 | // Overridden from DiscardableMemory: |
jbroman | ef35fe9 | 2016-03-16 10:52:06 +0900 | [diff] [blame] | 23 | bool Lock() override { |
| 24 | DCHECK(!is_locked_); |
| 25 | is_locked_ = true; |
| 26 | return false; |
| 27 | } |
| 28 | |
| 29 | void Unlock() override { |
| 30 | DCHECK(is_locked_); |
| 31 | is_locked_ = false; |
| 32 | // Force eviction to catch clients not correctly checking the return value |
| 33 | // of Lock(). |
| 34 | memset(data_.get(), 0, size_); |
| 35 | } |
| 36 | |
| 37 | void* data() const override { |
| 38 | DCHECK(is_locked_); |
| 39 | return data_.get(); |
| 40 | } |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 41 | |
ssid | bd827b3 | 2015-08-26 00:33:20 +0900 | [diff] [blame] | 42 | trace_event::MemoryAllocatorDump* CreateMemoryAllocatorDump( |
| 43 | const char* name, |
| 44 | trace_event::ProcessMemoryDump* pmd) const override { |
| 45 | return nullptr; |
| 46 | } |
| 47 | |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 48 | private: |
jbroman | ef35fe9 | 2016-03-16 10:52:06 +0900 | [diff] [blame] | 49 | bool is_locked_ = true; |
dcheng | cc8e4d8 | 2016-04-05 06:25:51 +0900 | [diff] [blame] | 50 | std::unique_ptr<uint8_t[]> data_; |
jbroman | ef35fe9 | 2016-03-16 10:52:06 +0900 | [diff] [blame] | 51 | size_t size_; |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | } // namespace |
| 55 | |
| 56 | TestDiscardableMemoryAllocator::TestDiscardableMemoryAllocator() { |
| 57 | } |
| 58 | |
| 59 | TestDiscardableMemoryAllocator::~TestDiscardableMemoryAllocator() { |
| 60 | } |
| 61 | |
dcheng | cc8e4d8 | 2016-04-05 06:25:51 +0900 | [diff] [blame] | 62 | std::unique_ptr<DiscardableMemory> |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 63 | TestDiscardableMemoryAllocator::AllocateLockedDiscardableMemory(size_t size) { |
Jeremy Roman | cd0c467 | 2017-08-17 08:27:24 +0900 | [diff] [blame] | 64 | return std::make_unique<DiscardableMemoryImpl>(size); |
reveman | 5ea3425 | 2015-03-18 08:18:16 +0900 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | } // namespace base |