void TestObserver( int M, int T, uintptr_t testMode ) {
theStats.Reset();
theGlobalBarrierActive = true;
theTestMode = testMode;
NativeParallelFor( M, TestBody(T) );
// When T (number of threads in arena, i.e. master + workers) is less than P
// (hardware concurrency), more than T-1 workers can visit the same arena. This
// is possible in case of imbalance or when other arenas are activated/deactivated
// concurrently).
ASSERT( !theNumObservers, "Unexpected alive observer(s)" );
REMARK( "Entries %d / %d, exits %d\n", (int)theStats.m_entries, (int)theStats.m_workerEntries, (int)theStats.m_exits );
if ( testMode & tmSynchronized ) {
if ( testMode & tmLocalObservation ) {
ASSERT( theStats.m_entries >= M * T, "Too few on_entry calls" );
ASSERT( theStats.m_workerEntries >= M * (T - 1), "Too few worker entries" );
}
else {
ASSERT( theStats.m_entries >= M * M * T, "Too few on_entry calls" );
ASSERT( theStats.m_entries <= M * (P + 1), "Too many on_entry calls" );
ASSERT( theStats.m_workerEntries >= M * M * (T - 1), "Too few worker entries" );
ASSERT( theStats.m_workerEntries <= M * (P - 1), "Too many worker entries" );
}
ASSERT( theStats.m_entries == theStats.m_exits, "Entries/exits mismatch" );
}
else {
ASSERT( theStats.m_entries >= M, "Too few on_entry calls" );
ASSERT( theStats.m_exits >= M || (testMode & tmAutoinitialization), "Too few on_exit calls" );
if ( !(testMode & tmLocalObservation) ) {
ASSERT( theStats.m_entries <= M * M * P, "Too many on_entry calls" );
ASSERT( theStats.m_exits <= M * M * T, "Too many on_exit calls" );
}
ASSERT( theStats.m_entries >= theStats.m_exits, "More exits than entries" );
}
}
/// @param iterations Number of iterations to gather data for.
/// @returns the number of nanoseconds the run took.
uint64_t Run(std::size_t iterations)
{
std::size_t iteration = iterations;
// Set up the testing fixture.
SetUp();
// Get the starting time.
Clock::TimePoint startTime, endTime;
startTime = Clock::Now();
// Run the test body for each iteration.
while (iteration--)
TestBody();
// Get the ending time.
endTime = Clock::Now();
// Tear down the testing fixture.
TearDown();
// Return the duration in nanoseconds.
return Clock::Duration(startTime, endTime);
}