hhullen/Task_manager-CPP

Task manager C++

Library to manage multithread tasks

Class definition

namespace hhullen {

class TaskManager {
 public:
  TaskManager(size_t threads);
  TaskManager(const TaskManager &src);
  TaskManager(TaskManager &&src);
  ~TaskManager();

  template <typename Func, typename... Args>
  void AddTask(Func &&function, Args &&...args);
  void SetThreads(size_t number);
  void AwaitAll();
  void operator=(const TaskManager &src);
    ...
};

}  // namespace hhullen

Installation

This is the one-header library, so *.h files all are needed. Try make lib command from src directory. It will create task_manager directory with necessary files. This is the directory to be copied to your project.

Usage

• Once the task_manager directory copied to project, include header file task_manager.h.
• Create TaskManager object for necessary threads amount set as constructor argument, otherwise, with empty constructor argument, the threads will be created as thread::hardware_concurrency() / 2. In case failure getting value from hardware_concurrency(), the only one thread will be created.

Example:

#include "task_manager.h"

using hhullen::TaskManager;

void Foo(int a, double b, char c) {
    /* Some code */
}

class GooClass {
 public:
  void Boo(double a, size_t b) {
    /* Some code */
  }
};

int main() {
    // Create the object
    TaskManager manager(4);

    // add tasks
    manager.AddTask(Foo, 10, 2.718, 'e');
    manager.AddTask(Foo, -359, 3.14, 'J');
    manager.AddTask(Foo, 993, 33.175, 'V');

    // add tasks in case class method usage
    GooClass obj;
    manager.AddTask(&GooClass::Boo, obj, 1.0021, 100077);
    manager.AddTask(&GooClass::Boo, obj, 45.3405, 9877);
    manager.AddTask(&GooClass::Boo, obj, 87.0435, 9000000);

    // await all task completion
    manager.AwaitAll();

    return 0;
}

Make targets

• make lib - create task_manager directory with necessary files
• make check - run cppcheck and linter for whole library code
• make tests - run tests
• make gcov_report - create tests coverage report in report dirctory
• make clean - all files could be created by any targets
• make all - run targets in order: clean gcov_report tests check