Merge "Use semaphore instead of condition variable" into tm-dev am: 38332d52 am: c556e469

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



Change-Id: I2d9be929d2c34b74e938055cf779239189017040
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>