addrspace.py 文件源码

def calculate_alloc_stats(self):
        """Calculates the minimum_size and alignment_gcd to determine "virtual allocs" when read lengths of data
           It's particularly important to cast all numbers to ints, since they're used a lot and object take effort to reread.
        """
        available_allocs = list(self.get_available_allocs())

        self.minimum_size = int(min([size for _, size in available_allocs]))
        accumulator = self.minimum_size
        for start, _ in available_allocs:
            if accumulator is None and start > 1:
                accumulator = start
            if accumulator and start > 0:
                accumulator = fractions.gcd(accumulator, start)
        self.alignment_gcd = int(accumulator)
        # Pick an arbitrary cut-off that'll lead to too many reads
        if self.alignment_gcd < 0x4:
            debug.warning("Alignment of " + self.__class__.__name__ + " is too small, plugins will be extremely slow")