Merge "Use semaphore instead of condition variable" into tm-dev am: 38332d52 am: 52010fe2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18291016



Change-Id: I06f4cfd2cb104c4db5b0e692ae40abcd770059f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>