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67 lines
2 KiB
C++
67 lines
2 KiB
C++
//===-- mem_map_linux.h -----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef SCUDO_MEM_MAP_LINUX_H_
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#define SCUDO_MEM_MAP_LINUX_H_
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#include "platform.h"
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#if SCUDO_LINUX
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#include "common.h"
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#include "mem_map_base.h"
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namespace scudo {
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class MemMapLinux final : public MemMapBase<MemMapLinux> {
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public:
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constexpr MemMapLinux() = default;
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MemMapLinux(uptr Base, uptr Capacity)
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: MapBase(Base), MapCapacity(Capacity) {}
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// Impls for base functions.
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bool mapImpl(uptr Addr, uptr Size, const char *Name, uptr Flags = 0);
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void unmapImpl(uptr Addr, uptr Size);
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bool remapImpl(uptr Addr, uptr Size, const char *Name, uptr Flags = 0);
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void setMemoryPermissionImpl(uptr Addr, uptr Size, uptr Flags);
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void releasePagesToOSImpl(uptr From, uptr Size) {
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return releaseAndZeroPagesToOSImpl(From, Size);
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}
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void releaseAndZeroPagesToOSImpl(uptr From, uptr Size);
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uptr getBaseImpl() { return MapBase; }
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uptr getCapacityImpl() { return MapCapacity; }
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private:
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uptr MapBase = 0;
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uptr MapCapacity = 0;
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};
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// This will be deprecated when every allocator has been supported by each
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// platform's `MemMap` implementation.
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class ReservedMemoryLinux final
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: public ReservedMemory<ReservedMemoryLinux, MemMapLinux> {
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public:
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// The following two are the Impls for function in `MemMapBase`.
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uptr getBaseImpl() { return MapBase; }
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uptr getCapacityImpl() { return MapCapacity; }
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// These threes are specific to `ReservedMemory`.
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bool createImpl(uptr Addr, uptr Size, const char *Name, uptr Flags);
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void releaseImpl();
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MemMapT dispatchImpl(uptr Addr, uptr Size);
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private:
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uptr MapBase = 0;
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uptr MapCapacity = 0;
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};
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} // namespace scudo
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#endif // SCUDO_LINUX
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#endif // SCUDO_MEM_MAP_LINUX_H_
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