The most basic use of a thread is to create it, and then join the thread, which, in effect, waits for the thread to finish its work before returning as follows:
#include <iostream>#include <pthread.h>void *mythread(void *ptr){ std::cout << "Hello World\n"; return nullptr;}int main(){ pthread_t thread1; pthread_t thread2; pthread_create(&thread1, nullptr, mythread, nullptr); pthread_create(&thread2, nullptr, mythread, nullptr); pthread_join(thread1, nullptr); pthread_join(thread2, nullptr);}// > g++ -std=c++17 scratchpad.cpp -lpthread; ./a.out// Hello World// Hello World
In the preceding example, a mythread() function is created with the signature (void *)(*)(void *), which is required by POSIX threads. In this ...
