Kim Jisong

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Thread library on C++

Multithreading support was introduced in C++11.

The thread classes and related functions are defined in the thread header file. std::thread is the thread class that represents a single thread in C++. To start a thread we simply need to create a new thread object and pass the executing code to be called (i.e, a callable object) into the constructor of the object.

Next is basic thread example written with c++.

// thread example
#include <iostream>       // std::cout
#include <thread>         // std::thread
 
void foo() 
{
  // do stuff...
}

void bar(int x)
{
  // do stuff...
}

int main() 
{
  std::thread first (foo);     // spawn new thread that calls foo()
  std::thread second (bar,0);  // spawn new thread that calls bar(0)

  std::cout << "main, foo and bar now execute concurrently...\n";

  // synchronize threads:
  first.join();                // pauses until first finishes
  second.join();               // pauses until second finishes

  std::cout << "foo and bar completed.\n";

  return 0;
}

ref.

https://cplusplus.com/reference/thread/

https://www.geeksforgeeks.org/multithreading-in-cpp/#:~:text=std%3A%3Athread%20is%20the%20thread%20class%20that%20represents%20a,which%20will%20execute%20the%20code%20specified%20in%20callable.

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