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64 lines
1.6 KiB
64 lines
1.6 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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/*! @file
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* Implementation of the memory management API in Windows.
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*/
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#include "sys_memory.h"
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#include <windows.h>
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/*!
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* Given a MEM_PROTECTION attribute, return corresponding Windows protection flag.
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*/
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static DWORD SysProtection(MEM_PROTECTION protect)
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{
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switch (protect)
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{
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case MEM_READ_EXEC:
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return PAGE_EXECUTE_READ;
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case MEM_READ_WRITE_EXEC:
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return PAGE_EXECUTE_READWRITE;
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default:
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return PAGE_NOACCESS;
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}
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}
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/*!
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* Implementation of the memory management API.
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*/
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size_t GetPageSize()
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{
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SYSTEM_INFO sysInfo;
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GetSystemInfo(&sysInfo);
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return (size_t)(sysInfo.dwPageSize);
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}
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void * MemAlloc(size_t size, MEM_PROTECTION protect)
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{
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return VirtualAlloc(0, size, MEM_COMMIT, SysProtection(protect));
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}
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void MemFree(void * addr, size_t size)
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{
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VirtualFree(addr, 0, MEM_RELEASE);
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}
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BOOL MemProtect(void * addr, size_t size, MEM_PROTECTION protect)
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{
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DWORD oldProtect;
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return VirtualProtect(addr, size, SysProtection(protect), &oldProtect);
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}
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/* ===================================================================== */
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/* eof */
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/* ===================================================================== */
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