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9231335eef
osrm-backend/util
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Daniel J. Hofmann 9231335eef Use Intel TBB's parallel_sort even for nested parallelism. 
TBB has a global task scheduler (that's one of the reason TBB is not
linked statically but dyanmically instead). This allows control over all
running threads, enabling us to use nested parallelism and the scheduler
doing all the task allocation itself.

That is, nested parallel execution such as in

    parallel_for(seq, [](const auto& rng){
      parallel_sort(rng);
    });

is no problem at all, as the scheduler still claims control over the
global environment.

Therefore, use `parallel_sort` Range overload where possible.

References:

- https://www.threadingbuildingblocks.org/docs/help/hh_goto.htm#reference/algorithms.htm
- https://www.threadingbuildingblocks.org/docs/help/hh_goto.htm#reference/algorithms/parallel_sort_func.htm
- https://www.threadingbuildingblocks.org/docs/help/hh_goto.htm#reference/task_scheduler.htm
- https://www.threadingbuildingblocks.org/docs/help/hh_goto.htm#reference/task_scheduler/task_scheduler_init_cls.htm
- https://www.threadingbuildingblocks.org/docs/help/hh_goto.htm#tbb_userguide/Initializing_and_Terminating_the_Library.htm
2015-09-28 20:26:03 +02:00
..
bearing.cpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
bearing.hpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
boost_filesystem_2_fix.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
cast.hpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
compute_angle.cpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
compute_angle.hpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
container.hpp Use Intel TBB's parallel_sort even for nested parallelism. 2015-09-28 20:26:03 +02:00
datastore_options.hpp Also support loading core information into shared memory 2015-08-19 12:27:44 +02:00
dist_table_wrapper.hpp fix some small issues: 2015-09-01 15:20:35 +02:00
fingerprint_impl.hpp.in Fix magic number check for fingerprint 2015-06-19 17:51:35 +02:00
fingerprint.cpp add (new) fingerprint.cpp that includes the generated headers 2015-03-31 10:47:21 +02:00
fingerprint.hpp Check if FingerPrint is trivial. TODO: Add this for all other data that is going to be serialized 2015-06-19 18:10:49 +02:00
floating_point.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
git_sha.cpp.in change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
git_sha.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
graph_loader.hpp Use Intel TBB's parallel_sort even for nested parallelism. 2015-09-28 20:26:03 +02:00
graph_utils.hpp Restructure the construction of the undirected graph 2015-07-01 18:07:29 +02:00
ini_file.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
integer_range.hpp Change integer_range's .size() member function return type to size_t. 2015-09-28 15:00:21 +02:00
iso_8601_duration_parser.hpp First step into overhauling the edge storage 2015-06-01 17:22:12 +02:00
json_logger.hpp Do not include Boost.Thread is a sub-header is good enough. 2015-09-28 15:00:20 +02:00
json_renderer.hpp Caches iterators instead of invoking function calls on every iteration. 2015-09-15 12:09:39 +02:00
json_util.hpp Address some of the remaining issues of the code review 2015-03-04 01:34:45 +01:00
lua_util.hpp Follow symlinks 2015-05-15 15:30:41 +02:00
make_unique.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
matching_debug_info.hpp Modernize the code base to C++11 standards and beyond. 2015-08-18 12:56:34 +02:00
mercator.cpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
mercator.hpp sprinkle a number of noexcepts into the code 2015-04-02 11:36:04 +02:00
osrm_exception.cpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
osrm_exception.hpp Modernize the code base to C++11 standards and beyond. 2015-08-18 12:56:34 +02:00
range_algorithms.hpp fix license header 2015-02-26 18:54:13 +01:00
routed_options.hpp Add loading of .core file to InternalDataFacade 2015-08-19 12:27:44 +02:00
simple_logger.cpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
simple_logger.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
std_hash.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
string_util.hpp Replace custom replace utility with the stdlib's replace algorithm. 2015-09-28 15:00:20 +02:00
timing_util.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
trigonometry_table.hpp change copyright line from personal names to project 2015-02-19 09:19:51 +01:00
xml_renderer.hpp Caches iterators instead of invoking function calls on every iteration. 2015-09-15 12:09:39 +02:00