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// 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 "base/memory/discardable_memory_malloc.h"
#include "base/logging.h"
namespace base {
namespace internal {
DiscardableMemoryMalloc::DiscardableMemoryMalloc(size_t size) : size_(size) {
}
DiscardableMemoryMalloc::~DiscardableMemoryMalloc() {
}
bool DiscardableMemoryMalloc::Initialize() {
return Lock() != DISCARDABLE_MEMORY_LOCK_STATUS_FAILED;
}
DiscardableMemoryLockStatus DiscardableMemoryMalloc::Lock() {
DCHECK(!memory_);
memory_.reset(static_cast<uint8*>(malloc(size_)));
if (!memory_)
return DISCARDABLE_MEMORY_LOCK_STATUS_FAILED;
return DISCARDABLE_MEMORY_LOCK_STATUS_PURGED;
}
void DiscardableMemoryMalloc::Unlock() {
DCHECK(memory_);
memory_.reset();
}
void* DiscardableMemoryMalloc::Memory() const {
DCHECK(memory_);
return memory_.get();
}
} // namespace internal
} // namespace base
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