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// Copyright 2013 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 "webkit/child/web_discardable_memory_impl.h"
namespace webkit_glue {
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::LockDiscardableMemoryStatus status = discardable_->Lock();
switch (status) {
case base::DISCARDABLE_MEMORY_SUCCESS:
return true;
case base::DISCARDABLE_MEMORY_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 webkit_glue
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