1 // Copyright 2014 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 "content/child/web_discardable_memory_impl.h" 6 7 namespace content { 8 ~WebDiscardableMemoryImpl()9WebDiscardableMemoryImpl::~WebDiscardableMemoryImpl() {} 10 11 // static 12 scoped_ptr<WebDiscardableMemoryImpl> CreateLockedMemory(size_t size)13WebDiscardableMemoryImpl::CreateLockedMemory(size_t size) { 14 scoped_ptr<base::DiscardableMemory> memory( 15 base::DiscardableMemory::CreateLockedMemory(size)); 16 if (!memory) 17 return scoped_ptr<WebDiscardableMemoryImpl>(); 18 return make_scoped_ptr(new WebDiscardableMemoryImpl(memory.Pass())); 19 } 20 lock()21bool WebDiscardableMemoryImpl::lock() { 22 base::DiscardableMemoryLockStatus status = discardable_->Lock(); 23 switch (status) { 24 case base::DISCARDABLE_MEMORY_LOCK_STATUS_SUCCESS: 25 return true; 26 case base::DISCARDABLE_MEMORY_LOCK_STATUS_PURGED: 27 discardable_->Unlock(); 28 return false; 29 default: 30 discardable_.reset(); 31 return false; 32 } 33 } 34 unlock()35void WebDiscardableMemoryImpl::unlock() { 36 discardable_->Unlock(); 37 } 38 data()39void* WebDiscardableMemoryImpl::data() { 40 return discardable_->Memory(); 41 } 42 WebDiscardableMemoryImpl(scoped_ptr<base::DiscardableMemory> memory)43WebDiscardableMemoryImpl::WebDiscardableMemoryImpl( 44 scoped_ptr<base::DiscardableMemory> memory) 45 : discardable_(memory.Pass()) { 46 } 47 48 } // namespace content 49