virtualMemory.h

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//
// Copyright 2019 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_BASE_ARCH_VIRTUAL_MEMORY_H
#define PXR_BASE_ARCH_VIRTUAL_MEMORY_H


#include "pxr/pxr.h"
#include "pxr/base/arch/api.h"

#include <cstddef>

PXR_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);
    
PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_BASE_ARCH_VIRTUAL_MEMORY_H