tree 9cb8deb7f5cb9dc4855d4082b6581550fe455529
parent ca8de5c1c3aa47bff5ab83482ed4b33c8cbc3047
author Craig Tiller <ctiller@google.com> 1488209040 -0800
committer Craig Tiller <ctiller@google.com> 1488209040 -0800

Add a spinlock type.

Useful for situations where we need to repeatedly trylock, not useful
for cases where we need to lock (due to spinning).

Add a variant of sync_test to test it (with the same tests we run for
gpr_mu).

Add a benchmark to bm_closure to demonstrate single threaded performance.