tree 0612fa860c6a203530a3c605040da9670fc8131a
parent 759990e8572c1d327860bc19b2d72581408fc3f9
author Tim Detwiler <tjdetwiler@google.com> 1550251779 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1550257069 +0000

[test][virtwl] Update test.

We saw some flakes in this test. Restructure some of the waiting to be
more defensive against races.

  * Reading the next used descriptor will wait until a timeout occurs
    or a descriptor is found.
  * Normalize the way this waiting is done to make it less error-prone
    in tests.

FLK-51 #comment

Test: fx run-test vmm_tests
Change-Id: I7b190c22aa66492724040232895f3d7884d34a84