Moving TBB tests to tbb/.

cpp/tbb/tbb_task_scheduler_init.cpp

@@ -0,0 +1,54 @@
+/* Check cf5-opt.vim defs.
+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.g:tbbmalloc
+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;
+}}
+