Example threading in c++

thread.cpp

// c++ -std=c++11 thread.cpp -o thread && ./thread 
#include <iostream>
#include <algorithm>
#include <vector>
#include <thread>

class TraceTile
{
public:
	int tileNum = 0;
	void renderTile() {
		std::cout << "will render tile " << tileNum << std::endl << std::flush;
		// TODO: Actually render the tile
		std::this_thread::sleep_for (std::chrono::seconds(1));
		std::cout << "done with tile" << tileNum << std::endl << std::flush;
	}
};

int main()
{
	std::vector<TraceTile> tiles;
	for (int i=0; i < 10; i++) {
		TraceTile t;
		t.tileNum = i;
		tiles.push_back( t );
	}

	std::cout << "Single threaded way ------------- " << std::endl;
	for (TraceTile &t : tiles) {
		t.renderTile();
	}

	std::cout << "multi threaded way  ------------- " << std::endl;
	std::vector<std::thread> renderThreads;
	for (TraceTile &t : tiles) {
		
		renderThreads.push_back( std::thread( &TraceTile::renderTile, t ) );
	}	

	for (std::thread &rndr : renderThreads ) {
		rndr.join();
	}
	std::cout << "all done" << std::endl;

	return 1;
}