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Markus Armbruster 20b31defe7 Generation numbers to catch write back of stale copies 
Oops when a stale copy is written back, i.e. the processor was yielded
since the copy was made.  Such bugs are difficult to spot.  Sequence
numbers catch them when they do actual harm (they also catch different
bugs).  Generation numbers catch them even when they don't.

New ef_generation to count generations.  Call new ef_make_stale() to
step it whenever the processor may be yielded.

New struct emptypedstr member generation.  Make sure all members of
unit empobj_storage share it.  It is only used in copies; its value on
disk and in the cache is meaningless.  Set it to ef_generation by
calling new ef_mark_fresh() when making copies in ef_read() and
ef_blank().  Do the same in obj_changed() to make check_sect_ok() &
friends freshen their argument when it is unchanged.  Copies with
generation other than ef_generation are stale.

Oops in ef_write() when a stale copy is written back.
2009-03-10 15:27:52 +01:00
..
budg.h Update copyright notice 2009-02-08 09:33:18 +01:00
com.h Update copyright notice 2009-02-08 09:33:18 +01:00
combat.h Update copyright notice 2009-02-08 09:33:18 +01:00
commands.h Update copyright notice 2009-02-08 09:33:18 +01:00
commodity.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
damage.h Update copyright notice 2009-02-08 09:33:18 +01:00
distribute.h Update copyright notice 2009-02-08 09:33:18 +01:00
econfig-spec.h Update copyright notice 2009-02-08 09:33:18 +01:00
empio.h Update copyright notice 2009-02-08 09:33:18 +01:00
empobj.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
empthread.h Don't log out player when update aborts a command with pthreads 2009-03-01 13:04:48 +01:00
file.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
game.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
ioqueue.h Update copyright notice 2009-02-08 09:33:18 +01:00
item.h Update copyright notice 2009-02-08 09:33:18 +01:00
journal.h Fix journalling of output ids 2009-03-10 15:27:52 +01:00
land.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
loan.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
lost.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
lwp.h Update known contributors comments 2009-02-18 21:11:33 +01:00
map.h Update copyright notice 2009-02-08 09:33:18 +01:00
match.h Update copyright notice 2009-02-08 09:33:18 +01:00
misc.h Update copyright notice 2009-02-08 09:33:18 +01:00
mission.h Update copyright notice 2009-02-08 09:33:18 +01:00
nat.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
news.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
nsc.h Update copyright notice 2009-02-08 09:33:18 +01:00
nuke.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
optlist.h Update copyright notice 2009-02-08 09:33:18 +01:00
path.h Update copyright notice 2009-02-08 09:33:18 +01:00
plague.h Update copyright notice 2009-02-08 09:33:18 +01:00
plane.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
player.h Update known contributors comments 2009-02-18 21:11:33 +01:00
power.h Update copyright notice 2009-02-08 09:33:18 +01:00
product.h Update copyright notice 2009-02-08 09:33:18 +01:00
proto.h Update copyright notice 2009-02-08 09:33:18 +01:00
prototypes.h Rename plane_caps() to pln_caps() and give it external linkage 2009-03-08 17:14:59 +01:00
queue.h Update copyright notice 2009-02-08 09:33:18 +01:00
retreat.h Update copyright notice 2009-02-08 09:33:18 +01:00
sect.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
server.h Update copyright notice 2009-02-08 09:33:18 +01:00
service.h Update copyright notice 2009-02-08 09:33:18 +01:00
ship.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
tel.h Update known contributors comments 2009-02-18 21:11:33 +01:00
trade.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
treaty.h Generation numbers to catch write back of stale copies 2009-03-10 15:27:52 +01:00
types.h Update copyright notice 2009-02-08 09:33:18 +01:00
unit.h Update copyright notice 2009-02-08 09:33:18 +01:00
update.h Update copyright notice 2009-02-08 09:33:18 +01:00
version.h Update copyright notice 2009-02-08 09:33:18 +01:00
xdump.h Update copyright notice 2009-02-08 09:33:18 +01:00
xy.h Update copyright notice 2009-02-08 09:33:18 +01:00