int main(int argc, char** argv) { pthread_t *my_threads = malloc(sizeof(pthread_t) * max_vcores()); /* set up to receive the PREEMPT_PENDING event. EVENT_VCORE_APPRO tells the * kernel to send the msg to whichever vcore is appropriate. Pthread code * will see the preemption and yield. */ struct event_queue *ev_q = get_eventq_vcpd(0, EVENT_VCORE_PRIVATE); ev_q->ev_flags = EVENT_IPI | EVENT_VCORE_APPRO; register_kevent_q(ev_q, EV_PREEMPT_PENDING); /* actually only need one less, since the _S will be pthread 0 */ for (int i = 0; i < max_vcores() - 1; i++) pthread_create(&my_threads[i], NULL, &while_thread, NULL); assert(num_vcores() == max_vcores()); while (1); /* should never make it here */ return -1; }
/* to trick uthread_create() */ int main(int argc, char** argv) { uint32_t vcoreid; int retval; /* Initialize our barrier. */ mcs_barrier_init(&b, max_vcores()); /* vcore_context test */ assert(!in_vcore_context()); /* prep indirect ev_q. Note we grab a big one */ indirect_q = get_eventq(EV_MBOX_UCQ); indirect_q->ev_flags = EVENT_IPI; indirect_q->ev_vcore = 1; /* IPI core 1 */ indirect_q->ev_handler = 0; printf("Registering %08p for event type %d\n", indirect_q, EV_FREE_APPLE_PIE); register_kevent_q(indirect_q, EV_FREE_APPLE_PIE); /* handle events: just want to print out what we get. This is just a * quick set of handlers, not a registration for a kevent. */ for (int i = 0; i < MAX_NR_EVENT; i++) register_ev_handler(i, handle_generic, 0); /* Want to use the default ev_ev (which we just overwrote) */ register_ev_handler(EV_EVENT, handle_ev_ev, 0); /* vcore_lib_init() done in vcore_request() now. */ /* Set up event reception. For example, this will allow us to receive an * event and IPI for USER_IPIs on vcore 0. Check event.c for more stuff. * Note you don't have to register for USER_IPIs to receive ones you send * yourself with sys_self_notify(). */ enable_kevent(EV_USER_IPI, 0, EVENT_IPI | EVENT_VCORE_PRIVATE); /* Receive pending preemption events. (though there's no PP handler) */ struct event_queue *ev_q = get_eventq_vcpd(0, EVENT_VCORE_PRIVATE); ev_q->ev_flags = EVENT_IPI | EVENT_VCORE_APPRO; register_kevent_q(ev_q, EV_PREEMPT_PENDING); /* We also receive preemption events, it is set up in uthread.c */ /* Inits a thread for us, though we won't use it. Just a hack to get into * _M mode. Note this requests one vcore for us */ struct uthread dummy = {0}; uthread_2ls_init(&dummy, &ghetto_sched_ops); uthread_mcp_init(); /* Reset the blockon to be the spinner... This is really shitty. Any * blocking calls after we become an MCP and before this will fail. This is * just mhello showing its warts due to trying to work outside uthread.c */ ros_syscall_blockon = __ros_syscall_spinon; if ((vcoreid = vcore_id())) { printf("Should never see me! (from vcore %d)\n", vcoreid); } else { // core 0 temp = 0xdeadbeef; printf("Hello from vcore %d with temp addr = %p and temp = %p\n", vcoreid, &temp, temp); printf("Multi-Goodbye, world, from PID: %d!\n", sys_getpid()); printf("Requesting %d vcores\n", max_vcores() - 1); retval = vcore_request(max_vcores() - 1); /* since we already have 1 */ //retval = vcore_request(5); printf("This is vcore0, right after vcore_request, retval=%d\n", retval); /* vcore_context test */ assert(!in_vcore_context()); } //#if 0 /* test notifying my vcore2 */ udelay(5000000); printf("Vcore 0 self-notifying vcore 2 with notif 4!\n"); struct event_msg msg; msg.ev_type = 4; sys_self_notify(2, 4, &msg, TRUE); udelay(5000000); printf("Vcore 0 notifying itself with notif 6!\n"); msg.ev_type = 6; sys_notify(sys_getpid(), 6, &msg); udelay(1000000); //#endif /* test loop for restarting a uthread_ctx */ if (vcoreid == 0) { int ctr = 0; while(1) { printf("Vcore %d Spinning (%d), temp = %08x!\n", vcoreid, ctr++, temp); udelay(5000000); //exit(0); } } printf("Vcore %d Done!\n", vcoreid); //mcs_barrier_wait(&b,vcore_id()); printf("All Cores Done!\n", vcoreid); while(1); // manually kill from the monitor /* since everyone should cleanup their uthreads, even if they don't plan on * calling their code or want uthreads in the first place. <3 */ uthread_cleanup(&dummy); return 0; }