llvm/compiler-rt/lib/scudo/standalone/mem_map_base.h

//===-- mem_map_base.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_MEM_MAP_BASE_H_
#define SCUDO_MEM_MAP_BASE_H_

#include "common.h"

namespace scudo {

// In Scudo, every memory operation will be fulfilled through a
// platform-specific `MemMap` instance. The essential APIs are listed in the
// `MemMapBase` below. This is implemented in CRTP, so for each implementation,
// it has to implement all of the 'Impl' named functions.
template <class Derived> class MemMapBase { … };

// `ReservedMemory` is a special memory handle which can be viewed as a page
// allocator. `ReservedMemory` will reserve a contiguous pages and the later
// page request can be fulfilled at the designated address. This is used when
// we want to ensure the virtual address of the MemMap will be in a known range.
// This is implemented in CRTP, so for each
// implementation, it has to implement all of the 'Impl' named functions.
template <class Derived, typename MemMapTy> class ReservedMemory { … };

} // namespace scudo

#endif // SCUDO_MEM_MAP_BASE_H_