virtualMemory.h

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// Copyright 2019 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
// Modified by Jeremy Retailleau.
 
#ifndef PXR_ARCH_VIRTUAL_MEMORY_H
#define PXR_ARCH_VIRTUAL_MEMORY_H

 
#include "pxr/arch/pxr.h"
#include "pxr/arch/api.h"
 
#include <cstddef>
 
ARCH_NAMESPACE_OPEN_SCOPE

ARCH_API void *
ArchReserveVirtualMemory(size_t numBytes);

ARCH_API bool
ArchCommitVirtualMemoryRange(void *start, size_t numBytes);

ARCH_API bool
ArchFreeVirtualMemory(void *start, size_t numBytes);

enum ArchMemoryProtection {
    ArchProtectNoAccess,
    ArchProtectReadOnly,
    ArchProtectReadWrite,
    ArchProtectReadWriteCopy
};

ARCH_API bool
ArchSetMemoryProtection(void const *start, size_t numBytes,
                        ArchMemoryProtection protection);
    
ARCH_NAMESPACE_CLOSE_SCOPE
 
#endif // PXR_ARCH_VIRTUAL_MEMORY_H