Inspired by the implementation of Benjt Jardrup, save the current state of
the vis job to disc at regular intervals so that we can resume from that
point in case the computer needs to be rebooted/shutdown or crash/power
issues occur.
Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>
Importing parts of this from TyrQuake - means that the base type used for
managing the bit vectors is unsigned long. Not really a performance win or
anything here, just a bit nicer to not have to cast from (byte *) to
(long *) - just adds a little extra work before writing out the compressed
data.
Signed-off-by: Kevin Shanahan <kmshanah@disenchant.net>