93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
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//===-- mem_map.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_H_
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#define SCUDO_MEM_MAP_H_
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#include "mem_map_base.h"
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#include "common.h"
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#include "internal_defs.h"
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// TODO: This is only used for `MapPlatformData`. Remove these includes when we
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// have all three platform specific `MemMap` and `ReservedMemory`
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// implementations.
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#include "fuchsia.h"
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#include "linux.h"
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#include "trusty.h"
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#include "mem_map_fuchsia.h"
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#include "mem_map_linux.h"
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namespace scudo {
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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 MemMapDefault final : public MemMapBase<MemMapDefault> {
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public:
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constexpr MemMapDefault() = default;
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MemMapDefault(uptr Base, uptr Capacity) : Base(Base), Capacity(Capacity) {}
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// Impls for base functions.
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bool mapImpl(uptr Addr, uptr Size, const char *Name, uptr Flags);
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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);
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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 Base; }
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uptr getCapacityImpl() { return Capacity; }
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void setMapPlatformData(MapPlatformData &NewData) { Data = NewData; }
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private:
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uptr Base = 0;
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uptr Capacity = 0;
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uptr MappedBase = 0;
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MapPlatformData Data = {};
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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 ReservedMemoryDefault final
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: public ReservedMemory<ReservedMemoryDefault, MemMapDefault> {
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public:
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constexpr ReservedMemoryDefault() = default;
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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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uptr getBaseImpl() { return Base; }
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uptr getCapacityImpl() { return Capacity; }
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private:
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uptr Base = 0;
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uptr Capacity = 0;
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MapPlatformData Data = {};
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};
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#if SCUDO_LINUX
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using ReservedMemoryT = ReservedMemoryLinux;
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using MemMapT = ReservedMemoryT::MemMapT;
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#elif SCUDO_FUCHSIA
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using ReservedMemoryT = ReservedMemoryFuchsia;
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using MemMapT = ReservedMemoryT::MemMapT;
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#elif SCUDO_TRUSTY
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using ReservedMemoryT = ReservedMemoryDefault;
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using MemMapT = ReservedMemoryT::MemMapT;
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#else
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#error \
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"Unsupported platform, please implement the ReservedMemory for your platform!"
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#endif
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} // namespace scudo
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#endif // SCUDO_MEM_MAP_H_
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