public void CanAccessSafeSegment()
{
int[] numbers = new int[40];
fixed(int *item = &numbers[0])
{
UnsafeMemoryAccess.AddSafeSegment(item, 40 * sizeof(int)); // mark the array as safe memory
int *mid = item + 20;
*mid = 42;
Assert.Equal(42, numbers[20]);
UnsafeMemoryAccess.RemoveSafeSegment(item);
}
}
public void CannotAccessUnsafeSegment()
{
int[] numbers = new int[40];
fixed(int *item = &numbers[0])
{
UnsafeMemoryAccess.AddSafeSegment(item, 40 * sizeof(int)); // mark the array as safe memory
int *mid = item + 42;
Assert.Throws <AccessViolationException>(() =>
{
*mid = 42;
});
UnsafeMemoryAccess.RemoveSafeSegment(item);
}
}