1 #include <stdio.h> 2 #include <unistd.h> 3 #include <pthread.h> 4 5 volatile int g_thread_2_continuing = 0; 6 7 void * 8 thread_1_func (void *input) 9 { 10 // Waiting to be released by the debugger. 11 while (!g_thread_2_continuing) // The debugger will change this value 12 { 13 usleep(1); 14 } 15 16 // Return 17 return NULL; // Set third breakpoint here 18 } 19 20 void * 21 thread_2_func (void *input) 22 { 23 // Waiting to be released by the debugger. 24 int child_thread_continue = 0; 25 while (!child_thread_continue) // The debugger will change this value 26 { 27 usleep(1); // Set second breakpoint here 28 } 29 30 // Release thread 1 31 g_thread_2_continuing = 1; 32 33 // Return 34 return NULL; 35 } 36 37 int main(int argc, char const *argv[]) 38 { 39 pthread_t thread_1; 40 pthread_t thread_2; 41 42 // Create a new thread 43 pthread_create (&thread_1, NULL, thread_1_func, NULL); 44 45 // Waiting to be attached by the debugger. 46 int main_thread_continue = 0; 47 while (!main_thread_continue) // The debugger will change this value 48 { 49 usleep(1); // Set first breakpoint here 50 } 51 52 // Create another new thread 53 pthread_create (&thread_2, NULL, thread_2_func, NULL); 54 55 // Wait for the threads to finish. 56 pthread_join(thread_1, NULL); 57 pthread_join(thread_2, NULL); 58 59 printf("Exiting now\n"); 60 } 61
