tree 32cc256bcd38f212f5ce88691e4de24bfc71f023
parent e1d90c68e4d58f8a7379ac0e7f1e12538e8f922e
author Hridya Valsaraju <hridya@google.com> 1488556657 -0800
committer Hridya Valsaraju <hridya@google.com> 1488565302 -0800

Handle spurious futex wakes in EventFlag

Sometimes a return value of 0 from FUTEX_WAIT_BITSET can mean
a spurious wakeup. EventFlag should examine the futex
word's value on a wake and return an appropriate
error code.

Test: Fixes issue in b/35813113.
Bug: 35813113

Change-Id: Id055b225f394ebc2fd3dcafa24edffc7a228df10