| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/child/web_discardable_memory_impl.h" |
| |
| namespace content { |
| |
| WebDiscardableMemoryImpl::~WebDiscardableMemoryImpl() {} |
| |
| // static |
| scoped_ptr<WebDiscardableMemoryImpl> |
| WebDiscardableMemoryImpl::CreateLockedMemory(size_t size) { |
| scoped_ptr<base::DiscardableMemory> memory( |
| base::DiscardableMemory::CreateLockedMemory(size)); |
| if (!memory) |
| return scoped_ptr<WebDiscardableMemoryImpl>(); |
| return make_scoped_ptr(new WebDiscardableMemoryImpl(memory.Pass())); |
| } |
| |
| bool WebDiscardableMemoryImpl::lock() { |
| base::DiscardableMemoryLockStatus status = discardable_->Lock(); |
| switch (status) { |
| case base::DISCARDABLE_MEMORY_LOCK_STATUS_SUCCESS: |
| return true; |
| case base::DISCARDABLE_MEMORY_LOCK_STATUS_PURGED: |
| discardable_->Unlock(); |
| return false; |
| default: |
| discardable_.reset(); |
| return false; |
| } |
| } |
| |
| void WebDiscardableMemoryImpl::unlock() { |
| discardable_->Unlock(); |
| } |
| |
| void* WebDiscardableMemoryImpl::data() { |
| return discardable_->Memory(); |
| } |
| |
| WebDiscardableMemoryImpl::WebDiscardableMemoryImpl( |
| scoped_ptr<base::DiscardableMemory> memory) |
| : discardable_(memory.Pass()) { |
| } |
| |
| } // namespace content |