/* ==== test_switch.c ============================================================ * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu * * Description : Test context switch functionality. * * 1.00 93/08/04 proven * -Started coding this file. */ #include #include const char buf[] = "abcdefghijklimnopqrstuvwxyz"; int fd = 1; void* new_thread(void* arg) { int i; for (i = 0; i < 10; i++) { write(fd, buf + (long) arg, 1); sleep(1); } } main() { pthread_t thread; int count = 2; long i; pthread_init(); printf("Going to sleep\n"); sleep(10); printf("Done sleeping\n"); for(i = 0; i < count; i++) { if (pthread_create(&thread, NULL, new_thread, (void *) i)) { printf("error creating new thread %d\n", i); } } pthread_exit(NULL); fprintf(stderr, "pthread_exit returned\n"); exit(1); }