Add parallel_for based on fork_join tasks.

lib/pls/CMakeLists.txt

 # List all required files here (cmake best practice to NOT automate this step!)
 add_library(pls STATIC
-        include/pls/pls.h                                       src/pls.cpp
+        include/pls/pls.h src/pls.cpp
 
         include/pls/algorithms/invoke_parallel.h
         include/pls/algorithms/invoke_parallel_impl.h
+        include/pls/algorithms/parallel_for.h
+        include/pls/algorithms/parallel_for_impl.h
 
         include/pls/internal/base/spin_lock.h
-        include/pls/internal/base/tas_spin_lock.h               src/internal/base/tas_spin_lock.cpp
-        include/pls/internal/base/ttas_spin_lock.h              src/internal/base/ttas_spin_lock.cpp
-        include/pls/internal/base/thread.h                      src/internal/base/thread.cpp
+        include/pls/internal/base/tas_spin_lock.h src/internal/base/tas_spin_lock.cpp
+        include/pls/internal/base/ttas_spin_lock.h src/internal/base/ttas_spin_lock.cpp
+        include/pls/internal/base/swmr_spin_lock.h src/internal/base/swmr_spin_lock.cpp
+        include/pls/internal/base/thread.h src/internal/base/thread.cpp
         include/pls/internal/base/thread_impl.h
-        include/pls/internal/base/barrier.h                     src/internal/base/barrier.cpp
+        include/pls/internal/base/barrier.h src/internal/base/barrier.cpp
         include/pls/internal/base/system_details.h
         include/pls/internal/base/error_handling.h
-        include/pls/internal/base/alignment.h                   src/internal/base/alignment.cpp
+        include/pls/internal/base/alignment.h src/internal/base/alignment.cpp
 
-        include/pls/internal/data_structures/aligned_stack.h    src/internal/data_structures/aligned_stack.cpp
+        include/pls/internal/data_structures/aligned_stack.h src/internal/data_structures/aligned_stack.cpp
         include/pls/internal/data_structures/aligned_stack_impl.h
-        include/pls/internal/data_structures/deque.h            src/internal/data_structures/deque.cpp
+        include/pls/internal/data_structures/deque.h src/internal/data_structures/deque.cpp
 
         include/pls/internal/helpers/prohibit_new.h
         include/pls/internal/helpers/profiler.h
         include/pls/internal/helpers/mini_benchmark.h
         include/pls/internal/helpers/unique_id.h
 
-        include/pls/internal/scheduling/root_task.h             src/internal/scheduling/root_task.cpp
-        include/pls/internal/scheduling/thread_state.h          src/internal/scheduling/thread_state.cpp
-        include/pls/internal/scheduling/abstract_task.h         src/internal/scheduling/abstract_task.cpp
-        include/pls/internal/scheduling/scheduler.h             src/internal/scheduling/scheduler.cpp
+        include/pls/internal/scheduling/root_task.h src/internal/scheduling/root_task.cpp
+        include/pls/internal/scheduling/thread_state.h src/internal/scheduling/thread_state.cpp
+        include/pls/internal/scheduling/abstract_task.h src/internal/scheduling/abstract_task.cpp
+        include/pls/internal/scheduling/scheduler.h src/internal/scheduling/scheduler.cpp
         include/pls/internal/scheduling/scheduler_impl.h
         include/pls/internal/scheduling/run_on_n_threads_task.h src/internal/scheduling/run_on_n_threads_task.cpp
-        include/pls/internal/scheduling/fork_join_task.h        src/internal/scheduling/fork_join_task.cpp
-        include/pls/internal/scheduling/scheduler_memory.h      src/internal/scheduling/scheduler_memory.cpp
-        include/pls/internal/scheduling/parallel_iterator_task.h
-        include/pls/internal/scheduling/parallel_iterator_task_impl.h
+        include/pls/internal/scheduling/fork_join_task.h src/internal/scheduling/fork_join_task.cpp
+        include/pls/internal/scheduling/scheduler_memory.h src/internal/scheduling/scheduler_memory.cpp
+        include/pls/internal/scheduling/parallel_iterator_task.h include/pls/internal/scheduling/parallel_iterator_task_impl.h
         src/internal/scheduling/parallel_iterator_task.cpp)
 
 # Add everything in `./include` to be in the include path of this project
 target_include_directories(pls
         PUBLIC
-            $<INSTALL_INTERFACE:include>
-            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:include>
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
         PRIVATE
-            ${CMAKE_CURRENT_SOURCE_DIR}/src # TODO: Set this up when we require private headers
-)
+        ${CMAKE_CURRENT_SOURCE_DIR}/src # TODO: Set this up when we require private headers
+        )
 
 # Add cmake dependencies here if needed
 target_link_libraries(pls
         Threads::Threads # pthread support
-)
-if(EASY_PROFILER)
+        )
+if (EASY_PROFILER)
     target_link_libraries(pls easy_profiler)
-endif()
+endif ()
 
 # Rules for istalling the library on a system
 # ...binaries
 INSTALL(TARGETS pls
         EXPORT pls-targets
         LIBRARY
-            DESTINATION lib/pls
+        DESTINATION lib/pls
         ARCHIVE
-            DESTINATION lib/pls
-)
+        DESTINATION lib/pls
+        )
 # ...all headers in `include`
 INSTALL(
         DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/pls

lib/pls/include/pls/internal/data_structures/work_stealing_deque.h

@@ -78,9 +78,6 @@ class work_stealing_deque {
   std::atomic<cas_integer> tail_;
   cas_integer previous_tail_;
 
-  base::spin_lock lock_{}; // TODO: Remove after debugging
-
-
  public:
   using state = aligned_stack::state;