chromium/base/memory/platform_shared_memory_mapper_posix.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include "base/memory/platform_shared_memory_mapper.h"

#include "base/logging.h"
#include "base/numerics/safe_conversions.h"

#include <sys/mman.h>

namespace base {

std::optional<span<uint8_t>> PlatformSharedMemoryMapper::Map(
    subtle::PlatformSharedMemoryHandle handle,
    bool write_allowed,
    uint64_t offset,
    size_t size) { … }

void PlatformSharedMemoryMapper::Unmap(span<uint8_t> mapping) { … }

}  // namespace base