Deprecated tbb::task_scheduler_init replaced with std::thread and tbb::global_control

unit_tests/contractor/graph_contractor.cpp

@@ -6,7 +6,12 @@
 #include <boost/test/test_case_template.hpp>
 #include <boost/test/unit_test.hpp>
 
+#include <tbb/tbb_stddef.h> // For version lookup
+#if TBB_VERSION_MAJOR == 2020
+#include <tbb/global_control.h>
+#else
 #include <tbb/task_scheduler_init.h>
+#endif
 
 using namespace osrm;
 using namespace osrm::contractor;
@@ -16,7 +21,11 @@ BOOST_AUTO_TEST_SUITE(graph_contractor)
 
 BOOST_AUTO_TEST_CASE(contract_graph)
 {
+#if TBB_VERSION_MAJOR == 2020
+    tbb::global_control scheduler(tbb::global_control::max_allowed_parallelism, 1);
+#else
     tbb::task_scheduler_init scheduler(1);
+#endif
     /*
      *                 <--1--<
      * (0) >--3--> (1) >--3--> (3)