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Copy pathCorpseRegion.h
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63 lines (53 loc) · 2.5 KB
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/*
* Copyright (C) 2026 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if (OS(MACOS) || USE(APPLE_INTERNAL_SDK)) && !PLATFORM(MACCATALYST) && !PLATFORM(IOS_FAMILY_SIMULATOR)
#include <JavaScriptCore/CorpseAddress.h>
#include <mach/mach.h>
#include <optional>
#include <stdint.h>
namespace JSC {
namespace Corpse {
// One mapped region of a task's address space, as the kernel describes it.
class Region {
public:
// The region containing `address`, or nullopt if not found in any region.
static std::optional<Region> findContaining(mach_port_t task, Address);
Address base() const { return m_base; }
size_t size() const { return m_size; }
Address end() const { return m_base + m_size; }
bool contains(Address address) const { return address >= m_base && address < end(); }
uint64_t pageCount() const;
uint64_t residentPageCount() const { return m_residentPageCount; }
uint64_t dirtyPageCount() const { return m_dirtyPageCount; }
private:
Address m_base;
size_t m_size { 0 };
uint64_t m_residentPageCount { 0 };
uint64_t m_dirtyPageCount { 0 };
};
} // namespace Corpse
} // namespace JSC
#endif // (OS(MACOS) || USE(APPLE_INTERNAL_SDK)) && !PLATFORM(MACCATALYST) && !PLATFORM(IOS_FAMILY_SIMULATOR)