75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
//===-- mem_map_fuchsia.h ---------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SCUDO_MEM_MAP_FUCHSIA_H_
|
|
#define SCUDO_MEM_MAP_FUCHSIA_H_
|
|
|
|
#include "mem_map_base.h"
|
|
|
|
#if SCUDO_FUCHSIA
|
|
|
|
#include <stdint.h>
|
|
#include <zircon/types.h>
|
|
|
|
namespace scudo {
|
|
|
|
class MemMapFuchsia final : public MemMapBase<MemMapFuchsia> {
|
|
public:
|
|
constexpr MemMapFuchsia() = default;
|
|
|
|
// Impls for base functions.
|
|
bool mapImpl(uptr Addr, uptr Size, const char *Name, uptr Flags);
|
|
void unmapImpl(uptr Addr, uptr Size);
|
|
bool remapImpl(uptr Addr, uptr Size, const char *Name, uptr Flags);
|
|
void setMemoryPermissionImpl(uptr Addr, uptr Size, uptr Flags);
|
|
void releasePagesToOSImpl(uptr From, uptr Size) {
|
|
return releaseAndZeroPagesToOSImpl(From, Size);
|
|
}
|
|
void releaseAndZeroPagesToOSImpl(uptr From, uptr Size);
|
|
uptr getBaseImpl() { return WindowBase; }
|
|
uptr getCapacityImpl() { return WindowSize; }
|
|
|
|
private:
|
|
friend class ReservedMemoryFuchsia;
|
|
|
|
// Used by ReservedMemoryFuchsia::dispatch.
|
|
MemMapFuchsia(uptr Base, uptr Capacity);
|
|
|
|
// Virtual memory address corresponding to VMO offset 0.
|
|
uptr MapAddr = 0;
|
|
|
|
// Virtual memory base address and size of the VMO subrange that is still in
|
|
// use. unmapImpl() can shrink this range, either at the beginning or at the
|
|
// end.
|
|
uptr WindowBase = 0;
|
|
uptr WindowSize = 0;
|
|
|
|
zx_handle_t Vmo = ZX_HANDLE_INVALID;
|
|
};
|
|
|
|
class ReservedMemoryFuchsia final
|
|
: public ReservedMemory<ReservedMemoryFuchsia, MemMapFuchsia> {
|
|
public:
|
|
constexpr ReservedMemoryFuchsia() = default;
|
|
|
|
bool createImpl(uptr Addr, uptr Size, const char *Name, uptr Flags);
|
|
void releaseImpl();
|
|
MemMapT dispatchImpl(uptr Addr, uptr Size);
|
|
uptr getBaseImpl() { return Base; }
|
|
uptr getCapacityImpl() { return Capacity; }
|
|
|
|
private:
|
|
uptr Base = 0;
|
|
uptr Capacity = 0;
|
|
};
|
|
|
|
} // namespace scudo
|
|
|
|
#endif // SCUDO_FUCHSIA
|
|
|
|
#endif // SCUDO_MEM_MAP_FUCHSIA_H_
|