code for the classic producer consumer problem

Question

Utilisateur anonyme · Accepted Answer

Did not get a chance to finish it, but it would be something like:
#include 
#include 
#include 
#include 
#include 
#include

std::queue queue;
std::mutex mutex;
std::condition_variable cond_var;

void producer(int id) {
    for (int i = 0; i < 10; ++i) {
        std::unique_lock lock(mutex);
        queue.push(i);
        std::cout << "Producer " << id << " produced " << i << std::endl;
        lock.unlock();
        cond_var.notify_one();
        std::this_thread::sleep_for(std::chrono::milliseconds(100));
    }
}

void consumer(int id) {
    for (int i = 0; i < 10; ++i) {
        std::unique_lock lock(mutex);
        cond_var.wait(lock, []{ return !queue.empty(); });
        int value = queue.front();
        queue.pop();
        std::cout << "Consumer " << id << " consumed " << value << std::endl;
        lock.unlock();
        std::this_thread::sleep_for(std::chrono::milliseconds(150));
    }
}

int main() {
    std::thread producer1(producer, 1);
    std::thread consumer1(consumer, 1);
    std::thread producer2(producer, 2);
    std::thread consumer2(consumer, 2);

producer1.join();
    consumer1.join();
    producer2.join();
    consumer2.join();

return 0;
}

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