Function wipe_memory

bleachbit/Memory.py:302–332

Wipe unallocated memory

()

def wipe_memory():
    """Wipe unallocated memory"""
    for cmd in ('swapon', 'swapoff', 'blkid'):
        if not FileUtilities.exe_exists(cmd):
            raise RuntimeError(f"wipe_memory: Command {cmd} not found")
    # cache the file because 'swapoff' changes it
    proc_swaps = get_proc_swaps()
    devices = disable_swap_linux()
    yield True  # process GTK+ idle loop
    # TRANSLATORS: The variable is a device like /dev/sda2
    logger.debug(_("Detected these swap devices: %s"), str(devices))
    wipe_swap_linux(devices, proc_swaps)
    yield True
    child_pid = os.fork()
    if 0 == child_pid:
        make_self_oom_target_linux()
        fill_memory_linux()
        os._exit(0)
    else:
        # TRANSLATORS: This is a debugging message that the parent process
        # is waiting for the child process. %(parent_pid)d is the parent
        # process ID; %(child_pid)d is the child process ID.
        logger.debug(_("The function wipe_memory() with process ID %(parent_pid)d is "
                       "waiting for child process ID %(child_pid)d."),
                     {'parent_pid': os.getpid(), 'child_pid': child_pid})
        rc = os.waitpid(child_pid, 0)[1]
        if rc not in [0, 9]:
            logger.warning(
                _("The child memory-wiping process returned code %d."), rc)
    enable_swap_linux()
    yield 0  # how much disk space was recovered