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//===-- bytemap.h -----------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef SCUDO_BYTEMAP_H_
#define SCUDO_BYTEMAP_H_
#include "atomic_helpers.h"
#include "common.h"
#include "mutex.h"
namespace scudo {
template <uptr Size> class FlatByteMap {
public:
void init() { DCHECK(Size == 0 || Map[0] == 0); }
void unmapTestOnly() { memset(Map, 0, Size); }
void set(uptr Index, u8 Value) {
DCHECK_LT(Index, Size);
DCHECK_EQ(0U, Map[Index]);
Map[Index] = Value;
}
u8 operator[](uptr Index) {
DCHECK_LT(Index, Size);
return Map[Index];
}
void disable() {}
void enable() {}
private:
u8 Map[Size] = {};
};
} // namespace scudo
#endif // SCUDO_BYTEMAP_H_
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