blob: 6ab854f2e72d08682ae5824b6298560d3489dbd6 [file] [log] [blame]
// Copyright 2015 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/test/test_discardable_memory_allocator.h"
#include <cstdint>
#include <cstring>
#include "base/logging.h"
#include "base/memory/discardable_memory.h"
#include "base/memory/ptr_util.h"
#include "starboard/memory.h"
namespace base {
namespace {
class DiscardableMemoryImpl : public DiscardableMemory {
public:
explicit DiscardableMemoryImpl(size_t size)
: data_(new uint8_t[size]), size_(size) {}
// Overridden from DiscardableMemory:
bool Lock() override {
DCHECK(!is_locked_);
is_locked_ = true;
return false;
}
void Unlock() override {
DCHECK(is_locked_);
is_locked_ = false;
// Force eviction to catch clients not correctly checking the return value
// of Lock().
SbMemorySet(data_.get(), 0, size_);
}
void* data() const override {
DCHECK(is_locked_);
return data_.get();
}
trace_event::MemoryAllocatorDump* CreateMemoryAllocatorDump(
const char* name,
trace_event::ProcessMemoryDump* pmd) const override {
return nullptr;
}
private:
bool is_locked_ = true;
std::unique_ptr<uint8_t[]> data_;
size_t size_;
};
} // namespace
std::unique_ptr<DiscardableMemory>
TestDiscardableMemoryAllocator::AllocateLockedDiscardableMemory(size_t size) {
return std::make_unique<DiscardableMemoryImpl>(size);
}
} // namespace base