qemu.py 文件源码

def open_global_bitmap(self):
        self.global_bitmap_fd = os.open(self.config.argument_values['work_dir'] + "/bitmap", os.O_RDWR | os.O_SYNC | os.O_CREAT)
        os.ftruncate(self.global_bitmap_fd, self.bitmap_size)
        self.global_bitmap = mmap.mmap(self.global_bitmap_fd, self.bitmap_size, mmap.MAP_SHARED, mmap.PROT_WRITE | mmap.PROT_READ)