a student asked if two processes can kill each other by sending simultaneous signals; this program does that about 10% of the time on my Macpic.twitter.com/neTQN4wj8B
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probably impossible?
should be theoretically possible since scheduling can be preemptive
not sure how to force it though... fork and then wait until just before the end of a scheduling quantum??
I'd try some global locking
The whole point is trying to do it with nothing but timing. Of course you can do it trivially with synchronization.
But what if we cause some global locking with the hardware instead of using any primitive from the OS ?
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