time: sim-time thread safety and move guard-dog fully into abstract time.#6369

Merged

jmarantz merged 15 commits intoenvoyproxy:masterfrom

jmarantz:guardog-timer

Mar 27, 2019

Commits on Mar 22, 2019

Rework guarddog_impl.cc using timers rather than condvar timed waits.
jmarantz
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Commits on Mar 23, 2019

working with --runs_per_test=1000 with and without tsan.
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cleanup
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More cleanup and removal of new simulated-time routines that I didn't wind up using.
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spelling & unreferenced param (a mutex that is needed for annotations but not in body).
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Test guard-dog now both with simulated time and real time, for paranoia. Both work with tsan, runs_per_test=1000.
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Clean up thread annotations in SimulatedTimeSystem, remove superfluous comments.
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Commits on Mar 24, 2019

asan fix and coverage build fix (unreachable line after fully specified case).
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Commits on Mar 25, 2019

rm superfluous include.
jmarantz
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Commits on Mar 27, 2019