Messages in this thread | | | Date | Fri, 07 Jun 2002 10:35:55 +0200 | From | Peter Wächtler <> | Subject | Re: Process-Shared Mutex (futex) - What is it good for ? |
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Vladimir Zidar wrote: > Nice to have everything as POSIX says, but how could process-shared > mutex be usefull ? Imagine two processes useing one mutex to lock shared > memory area. One process locks, and then dies (for example, it goes > sigSEGV way). Second process could wait for ages (untill reboot ?) and > it won't get lock() on that mutex ever. Wouldn't it be more usefull to > have automatic mutex cleanup after process death ? Just make a cleanup, > and mark it as 'damaged', so other processes will eventualy get error > saying that something went wrong. > >
Look at kernel/futex.c in 2.5 tree. I vote for killing the "dangling" process - like it's done in IRIX.
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