internal static extern int madvise(IntPtr addr, size_t length, MemoryMappedAdvice advice);
internal static extern int madvise(IntPtr addr, size_t length, MemoryMappedAdvice advice);
internal static extern int madvise(IntPtr addr, size_t length, MemoryMappedAdvice advice);
internal static extern int madvise(IntPtr addr, size_t length, MemoryMappedAdvice advice);