chromium/base/memory/platform_shared_memory_region.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/memory/platform_shared_memory_region.h"

#include "base/bits.h"
#include "base/memory/aligned_memory.h"
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/shared_memory_security_policy.h"
#include "base/metrics/histogram_functions.h"
#include "base/numerics/checked_math.h"
#include "base/system/sys_info.h"

namespace base {
namespace subtle {

// static
PlatformSharedMemoryRegion PlatformSharedMemoryRegion::CreateWritable(
    size_t size) { … }

// static
PlatformSharedMemoryRegion PlatformSharedMemoryRegion::CreateUnsafe(
    size_t size) { … }

PlatformSharedMemoryRegion::PlatformSharedMemoryRegion() = default;
PlatformSharedMemoryRegion::PlatformSharedMemoryRegion(
    PlatformSharedMemoryRegion&& other) = default;
PlatformSharedMemoryRegion& PlatformSharedMemoryRegion::operator=(
    PlatformSharedMemoryRegion&& other) = default;
PlatformSharedMemoryRegion::~PlatformSharedMemoryRegion() = default;

ScopedPlatformSharedMemoryHandle
PlatformSharedMemoryRegion::PassPlatformHandle() { … }

std::optional<span<uint8_t>> PlatformSharedMemoryRegion::MapAt(
    uint64_t offset,
    size_t size,
    SharedMemoryMapper* mapper) const { … }

void PlatformSharedMemoryRegion::Unmap(span<uint8_t> mapping,
                                       SharedMemoryMapper* mapper) { … }

}  // namespace subtle
}  // namespace base