util/system/protect.h


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#pragma once 
 
#include "defaults.h"
 
#include <util/generic/flags.h>

enum EProtectMemoryMode { 
    PM_NONE = 0x00,  // no access allowed
    PM_READ = 0x01,  // read access allowed
    PM_WRITE = 0x02, // write access allowed 
    PM_EXEC = 0x04   // execute access allowed
}; 
 
Y_DECLARE_FLAGS(EProtectMemory, EProtectMemoryMode)
Y_DECLARE_OPERATORS_FOR_FLAGS(EProtectMemory)

/** 
 * Set protection mode on memory block 
 * @param addr Block address to be protected 
 * @param length Block size in bytes 
 * @param mode A bitwise combination of @c EProtectMemoryMode flags 
 * @note On Windows there is no write-only protection mode, 
 * so PM_WRITE will be translated to (PM_READ | PM_WRITE) on Windows. 
 **/ 
void ProtectMemory(void* addr, const size_t length, const EProtectMemory mode);