exit_code becomeTaskThread( task_mask* mask )
{
if( isInitTaskSystem() )
{
task_thread_data data;
data.queue = global_task_queue;
data.mask = mask;
return taskThread( ( void* )( &data ) );
}
else
throw exception( "becomeTaskThread(): Task system not initialized" );
}
void execute(int const numberOfThreads) {
auto const n = 1000000000;
auto const delta = 1.0 / n;
auto const startTime = std::chrono::steady_clock::now();
auto const sliceSize = n / numberOfThreads;
std::packaged_task<double()> tasks[numberOfThreads];
for (auto i = 0; i < numberOfThreads; ++i) {
tasks[i] = std::packaged_task<double()>(std::bind(partialSum, i, sliceSize, delta));
std::thread taskThread(std::ref(tasks[i]));
taskThread.detach();
}
auto sum = 0.0;
for (auto && task: tasks) { sum += task.get_future().get(); }
auto const pi = 4.0 * delta * sum;
auto const elapseTime = std::chrono::steady_clock::now() - startTime;
out("Futures Thread AW", pi, n, elapseTime, numberOfThreads, std::thread::hardware_concurrency());
}
