int main(int argc, char** argv)
{
uint32_t vcoreid = vcore_id();
int retval = 0;
mcs_barrier_init(&b, max_vcores());
/* begin: stuff userspace needs to do before switching to multi-mode */
vcore_lib_init();
#if 0
/* tell the kernel where and how we want to receive notifications */
struct notif_method *nm;
for (int i = 0; i < MAX_NR_NOTIF; i++) {
nm = &__procdata.notif_methods[i];
nm->flags |= NOTIF_WANTED | NOTIF_MSG | NOTIF_IPI;
nm->vcoreid = i % 2; // vcore0 or 1, keepin' it fresh.
}
#endif
/* Need to save this somewhere that you can find it again when restarting
* core0 */
core0_tls = get_tls_desc(0);
/* Need to save our floating point state somewhere (like in the
* user_thread_tcb so it can be restarted too */
/* end: stuff userspace needs to do before switching to multi-mode */
/* get into multi mode */
retval = vcore_request(1);
if (retval)
printf("F****d!\n");
printf("Proc %d requesting another vcore\n", getpid());
begin = read_tsc();
retval = vcore_request(1);
if (retval)
printf("F****d!\n");
while (!core1_up)
cpu_relax;
end = read_tsc();
printf("Took %llu usec (%llu nsec) to receive 1 core (cold).\n",
udiff(begin, end), ndiff(begin, end));
printf("[T]:002:%llu:%llu:1:C.\n",
udiff(begin, end), ndiff(begin, end));
core1_up = FALSE;
udelay(2000000);
printf("Proc %d requesting the vcore again\n", getpid());
begin = read_tsc();
retval = vcore_request(1);
if (retval)
printf("F****d!\n");
while (!core1_up)
cpu_relax();
end = read_tsc();
printf("Took %llu usec (%llu nsec) to receive 1 core (warm).\n",
udiff(begin, end), ndiff(begin, end));
printf("[T]:002:%llu:%llu:1:W.\n",
udiff(begin, end), ndiff(begin, end));
return 0;
}
int main(int argc, char** argv)
{
/* don't forget to enable notifs on vcore0. if you don't, the kernel will
* restart your _S with notifs disabled, which is a path to confusion. */
struct preempt_data *vcpd = &__procdata.vcore_preempt_data[0];
vcpd->notif_enabled = TRUE;
mcs_barrier_init(&b, max_vcores());
vcore_request(max_vcores());
printf("not enough vcores, going to try it manually\n");
sys_resource_req(RES_CORES, max_vcores(), 1, REQ_SOFT);
printf("We're screwed!\n");
/* 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;
}
int main(int argc, char** argv)
{
uint32_t vcoreid;
int retval;
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_big_event_q();
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++)
ev_handlers[i] = handle_generic;
/* Want to use the default ev_ev (which we just overwrote) */
ev_handlers[EV_EVENT] = handle_ev_ev;
/* vcore_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);
/* Receive pending preemption events. Can also get a MSG if you want. */
struct event_queue *ev_q = get_event_q();
ev_q->ev_flags = EVENT_IPI | EVENT_NOMSG | EVENT_VCORE_APPRO;
register_kevent_q(ev_q, EV_PREEMPT_PENDING);
/* Makes 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 */
uthread_create(dummy, 0);
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());
//retval = sys_resource_req(RES_CORES, 2, 0);
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());
}
/* 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);
udelay(5000000);
printf("Vcore 0 notifying itself with notif 3!\n");
msg.ev_type = 3;
sys_notify(sys_getpid(), 3, &msg);
udelay(1000000);
/* test loop for restarting a notif_tf */
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
return 0;
}
