/*
VIM: let b:lcppflags="-std=c++11 -O2 -pthread"
VIM: let b:cppflags=g:Iboost.g:Itbb
VIM: let b:ldflags=g:Lboost.g:Ltbb
VIM: let b:ldlibpath=g:Bboost.g:Btbb
*/
#include <tbb/enumerable_thread_specific.h>
#include <tbb/task_scheduler_init.h>
#include <tbb/parallel_for_each.h>
#include <iostream>
#include <exception>
#include <vector>

/*
 *  Conclusion:
 *      The first task_sheduler_init is configuring number of threads in
 *      the thread pool. If the task scheduler initialised implicitly then
 *      the number of threads is the number of cores. To ensure uncomment
 *      the commented line below.
 */

int main ( void )
{try{

    std::vector<int> v(1024*1024);
    //tbb::enumerable_thread_specific<int> count;
    tbb::task_scheduler_init init3(5);
    tbb::task_scheduler_init init(10);
    tbb::task_scheduler_init init2(1);
    tbb::enumerable_thread_specific<int> count;
    tbb::parallel_for_each( v.begin(), v.end(), [&count](int& v){
        ++count.local();
    });

    int i = 0;
    for ( int c : count )
    {
        std::cout << "Thread: " << ++i << " counted " << c << std::endl;
    }
    return 0;
}
catch ( const std::exception& e )
{
    std::cerr << std::endl
            << "std::exception(\"" << e.what() << "\")." << std::endl;
    return 2;
}
catch ( ... )
{
    std::cerr  << std::endl
            << "unknown exception." << std::endl;
    return 1;
}}