Add two instrumentation methods to IFooCallback, to help with timing
measurements in gTest.
The first one, reportResults(), blocks the caller for a given length of
time while waiting for all the other methods to execute, then reports
whether these methods were executed within this length of time, for how
long their caller was blocked, and also how long the execution of the
bodies of each of them took. Note that the execution time for a
method's body is independent of whether it is a oneway or a blocking
method. For example, heyItsTheMeaningOfLife() is a oneway method, so it
returns immediately to the caller (so the caller-blocked time should be
very small). However, if its body takes several seconds to run, then
this is the information that will be returned for
heyItsTheMeaningOfLife() as well.
The second instrumentation method, youBlockedMeFor(), is used by the
caller of IFooCallback to report how long the caller was blocked for.
This information is saved and passed by reportResults() as described
above.
b/30855757 Convert hidl test to gTest
Change-Id: I35ac708e424bcb143fce959609fcc747f1ec37fb
Signed-off-by: Iliyan Malchev <malchev@google.com>