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

src/tools/contract.cpp

@@ -10,12 +10,11 @@
 #include <boost/program_options.hpp>
 #include <boost/program_options/errors.hpp>
 
-#include <tbb/task_scheduler_init.h>
-
 #include <cstdlib>
 #include <exception>
 #include <new>
 #include <ostream>
+#include <thread>
 
 #include "util/meminfo.hpp"
 
@@ -45,7 +44,7 @@ return_code parseArguments(int argc,
     config_options.add_options()(
         "threads,t",
         boost::program_options::value<unsigned int>(&contractor_config.requested_num_threads)
-            ->default_value(tbb::task_scheduler_init::default_num_threads()),
+            ->default_value(std::thread::hardware_concurrency()),
         "Number of threads to use")(
         "core,k",
         boost::program_options::value<double>(&contractor_config.core_factor)->default_value(1.0),
@@ -171,7 +170,7 @@ int main(int argc, char *argv[]) try
         return EXIT_FAILURE;
     }
 
-    const unsigned recommended_num_threads = tbb::task_scheduler_init::default_num_threads();
+    const unsigned recommended_num_threads = std::thread::hardware_concurrency();
 
     if (recommended_num_threads != contractor_config.requested_num_threads)
     {

src/tools/customize.cpp

@@ -5,12 +5,11 @@
 #include "util/meminfo.hpp"
 #include "util/version.hpp"
 
-#include <tbb/task_scheduler_init.h>
-
 #include <boost/filesystem.hpp>
 #include <boost/program_options.hpp>
 
 #include <iostream>
+#include <thread>
 
 using namespace osrm;
 
@@ -39,7 +38,7 @@ return_code parseArguments(int argc,
         //
         ("threads,t",
          boost::program_options::value<unsigned int>(&customization_config.requested_num_threads)
-             ->default_value(tbb::task_scheduler_init::default_num_threads()),
+             ->default_value(std::thread::hardware_concurrency()),
          "Number of threads to use")(
             "segment-speed-file",
             boost::program_options::value<std::vector<std::string>>(

src/tools/extract.cpp

@@ -4,14 +4,13 @@
 #include "util/log.hpp"
 #include "util/version.hpp"
 
-#include <tbb/task_scheduler_init.h>
-
 #include <boost/filesystem.hpp>
 #include <boost/program_options.hpp>
 
 #include <cstdlib>
 #include <exception>
 #include <new>
+#include <thread>
 
 #include "util/meminfo.hpp"
 
@@ -49,7 +48,7 @@ return_code parseArguments(int argc,
         "Data version. Leave blank to avoid. osmosis - to get timestamp from file")(
         "threads,t",
         boost::program_options::value<unsigned int>(&extractor_config.requested_num_threads)
-            ->default_value(tbb::task_scheduler_init::default_num_threads()),
+            ->default_value(std::thread::hardware_concurrency()),
         "Number of threads to use")(
         "small-component-size",
         boost::program_options::value<unsigned int>(&extractor_config.small_component_size)

src/tools/partition.cpp

@@ -7,8 +7,6 @@
 #include "util/timing_util.hpp"
 #include "util/version.hpp"
 
-#include <tbb/task_scheduler_init.h>
-
 #include <boost/algorithm/string/join.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/program_options.hpp>
@@ -17,6 +15,7 @@
 #include <iostream>
 #include <iterator>
 #include <regex>
+#include <thread>
 
 using namespace osrm;
 
@@ -86,7 +85,7 @@ return_code parseArguments(int argc,
         //
         ("threads,t",
          boost::program_options::value<unsigned int>(&config.requested_num_threads)
-             ->default_value(tbb::task_scheduler_init::default_num_threads()),
+             ->default_value(std::thread::hardware_concurrency()),
          "Number of threads to use")
         //
         ("balance",