Create a set of threads that repeatedly execute a test function.
Declared in <bslmt_throughputbenchmark.h>
int
addThreadGroup(
RunFunction const& runFunction,
int numThreads,
bsls::Types::Int64 busyWorkAmount);
Create a set of threads, with cardinality the specified numThreads, that will repeatedly execute the specified runFunction followed by the specified busyWork, with the specified busyWorkAmount as its argument. Return the index for the thread group. The behavior is undefined unless 0 < numThreads and 0 <= busyWorkAmount.