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// Copyright (c) 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"
namespace base {
DiscardableMemory::DiscardableMemory()
: memory_(NULL),
size_(0),
is_locked_(false)
#if defined(OS_ANDROID)
, fd_(-1)
#endif // OS_ANDROID
{
DCHECK(Supported());
}
void* DiscardableMemory::Memory() const {
DCHECK(is_locked_);
return memory_;
}
// Stub implementations for platforms that don't support discardable memory.
#if !defined(OS_ANDROID) && !defined(OS_MACOSX)
DiscardableMemory::~DiscardableMemory() {
NOTIMPLEMENTED();
}
// static
bool DiscardableMemory::Supported() {
return false;
}
bool DiscardableMemory::InitializeAndLock(size_t size) {
NOTIMPLEMENTED();
return false;
}
LockDiscardableMemoryStatus DiscardableMemory::Lock() {
NOTIMPLEMENTED();
return DISCARDABLE_MEMORY_FAILED;
}
void DiscardableMemory::Unlock() {
NOTIMPLEMENTED();
}
// static
bool DiscardableMemory::PurgeForTestingSupported() {
return false;
}
// static
void DiscardableMemory::PurgeForTesting() {
NOTIMPLEMENTED();
}
#endif // OS_*
} // namespace base
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