tree 4bf159213d27f805579fc8b9a5a5460d70df5a3d
parent c712ceeec4c15da8488c5ce143fcc6b0a02d74f3
author Christopher Ferris <cferris@google.com> 1413857359 -0700
committer Christopher Ferris <cferris@google.com> 1413941462 -0700

Fix race condition in timer disarm/delete.

When setting a repeat timer using the SIGEV_THREAD mechanism, it's possible
that the callback can be called after the timer is disarmed or deleted.
This happens because the kernel can generate signals that the timer thread
will continue to handle even after the timer is supposed to be off.

Add two new tests to verify that disarming/deleting doesn't continue to
call the callback.

Modify the repeat test to finish more quickly than before.

Refactor the Counter implementation a bit.

Bug: 18039727
Change-Id: I73192c915cdacf608521b1792c54e5af14a34907