[ET Trac] #2832: possible race condition in LoopControl

[Erik Schnetter]

#2832: possible race condition in LoopControl

 Reporter: Roland Haas
   Status: new
Milestone: 
  Version: 
     Type: bug
 Priority: major
Component: 

Comment (by Erik Schnetter):

As you say, your padding doesn’t actually align the struct. The struct may thus be split across two cache lines. Since some architectures have 128-byte cache lines, you should instead pad to 2\*128 bytes. \(Intel CPUs have 64-byte cache lines and thus 128 bytes suffice there.\)

You can instead also check the alignment \(see [https://en.cppreference.com/w/c/language/\_Alignof](https://en.cppreference.com/w/c/language/_Alignof)\) with a static assertion.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2832/possible-race-condition-in-loopcontrol
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