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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 "base/memory/discardable_memory.h"
#include "base/logging.h"
#include "base/memory/discardable_memory_emulated.h"
#include "base/memory/discardable_memory_malloc.h"
namespace base {
// static
void DiscardableMemory::RegisterMemoryPressureListeners() {
internal::DiscardableMemoryEmulated::RegisterMemoryPressureListeners();
}
// static
void DiscardableMemory::UnregisterMemoryPressureListeners() {
internal::DiscardableMemoryEmulated::UnregisterMemoryPressureListeners();
}
// static
bool DiscardableMemory::ReduceMemoryUsage() {
return internal::DiscardableMemoryEmulated::ReduceMemoryUsage();
}
// static
void DiscardableMemory::GetSupportedTypes(
std::vector<DiscardableMemoryType>* types) {
const DiscardableMemoryType supported_types[] = {
DISCARDABLE_MEMORY_TYPE_EMULATED,
DISCARDABLE_MEMORY_TYPE_MALLOC
};
types->assign(supported_types, supported_types + arraysize(supported_types));
}
// static
scoped_ptr<DiscardableMemory> DiscardableMemory::CreateLockedMemoryWithType(
DiscardableMemoryType type, size_t size) {
switch (type) {
case DISCARDABLE_MEMORY_TYPE_NONE:
case DISCARDABLE_MEMORY_TYPE_ASHMEM:
case DISCARDABLE_MEMORY_TYPE_MAC:
return scoped_ptr<DiscardableMemory>();
case DISCARDABLE_MEMORY_TYPE_EMULATED: {
scoped_ptr<internal::DiscardableMemoryEmulated> memory(
new internal::DiscardableMemoryEmulated(size));
if (!memory->Initialize())
return scoped_ptr<DiscardableMemory>();
return memory.PassAs<DiscardableMemory>();
}
case DISCARDABLE_MEMORY_TYPE_MALLOC: {
scoped_ptr<internal::DiscardableMemoryMalloc> memory(
new internal::DiscardableMemoryMalloc(size));
if (!memory->Initialize())
return scoped_ptr<DiscardableMemory>();
return memory.PassAs<DiscardableMemory>();
}
}
NOTREACHED();
return scoped_ptr<DiscardableMemory>();
}
// static
void DiscardableMemory::PurgeForTesting() {
internal::DiscardableMemoryEmulated::PurgeForTesting();
}
} // namespace base
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