#include #include #include #include #include #include void *thread_worker1(void *args); void *thread_worker2(void *args); int main(int argc, char **argv) { int shared_var = 1000; pthread_t tid; pthread_attr_t thread_attr; if( pthread_attr_init(&thread_attr) ) { printf("pthread_attr_init() failure: %s\n", strerror(errno)); return -1; } if( pthread_attr_setstacksize(&thread_attr, 120*1024) ) { printf("pthread_attr_setstacksize() failure: %s\n", strerror(errno)); return -1; } if( pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED) ) { printf("pthread_attr_setdetachstate() failure: %s\n", strerror(errno)); return -1; } pthread_create(&tid, &thread_attr, thread_worker1, &shared_var); printf("Thread worker1 tid[%ld] created ok\n", tid); pthread_create(&tid, NULL, thread_worker2, &shared_var); printf("Thread worker2 tid[%ld] created ok\n", tid); pthread_attr_destroy(&thread_attr); /* Wait until thread worker2 exit() */ pthread_join(tid, NULL); while(1) { printf("Main/Control thread shared_var: %d\n", shared_var); sleep(10); } } void *thread_worker1(void *args) { int *ptr = (int *)args; if( !args ) { printf("%s() get invalid arguments\n", __FUNCTION__); pthread_exit(NULL); } printf("Thread workder 1 [%ld] start running...\n", pthread_self()); while(1) { printf("+++: %s before shared_var++: %d\n", __FUNCTION__, *ptr); *ptr += 1; sleep(2); printf("+++: %s after sleep shared_var: %d\n", __FUNCTION__, *ptr); } printf("Thread workder 1 exit...\n"); return NULL; } void *thread_worker2(void *args) { int *ptr = (int *)args; if( !args ) { printf("%s() get invalid arguments\n", __FUNCTION__); pthread_exit(NULL); } printf("Thread workder 2 [%ld] start running...\n", pthread_self()); while(1) { printf("---: %s before shared_var++: %d\n", __FUNCTION__, *ptr); *ptr += 1; sleep(2); printf("---: %s after sleep shared_var: %d\n", __FUNCTION__, *ptr); } printf("Thread workder 2 exit...\n"); return NULL; }