static void
reader(void *ctxt)
{
if (dispatch_atomic_dec(&r_count) == 0) {
if (r_count == 0) {
test_stop();
}
}
}
static void
cascade(void* context) {
uintptr_t idx, *idxptr = (uintptr_t*)context;
if (done) return;
idx = *idxptr + 1;
if (idx < QUEUES) {
*idxptr = idx;
dispatch_async_f(queues[idx], context, cascade);
}
if (dispatch_atomic_dec(&iterations) == 0) {
done = 1;
histogram();
MU_PASS("Please check histogram to be sure");
}
}
static void
_dispatch_apply2(void *_ctxt)
{
struct dispatch_apply_s *da = _ctxt;
size_t const iter = da->da_iterations;
dispatch_function_apply_t func = da->da_func;
void *const ctxt = da->da_ctxt;
size_t idx;
_dispatch_workitem_dec(); // this unit executes many items
// Striding is the responsibility of the caller.
while (fastpath((idx = dispatch_atomic_inc((intptr_t*)&da->da_index) - 1) < iter)) {
func(ctxt, idx);
_dispatch_workitem_inc();
}
if (dispatch_atomic_dec((intptr_t*)&da->da_thr_cnt) == 0) {
dispatch_semaphore_signal(da->da_sema);
}
}
void
cpubusy(void* context)
{
intptr_t *count = context;
intptr_t iterdone;
long idx;
for (idx = 0; idx < LOOP_COUNT; ++idx) {
if (done) break;
}
if ((iterdone = dispatch_atomic_dec(&iterations)) == 0) {
dispatch_atomic_inc(&done);
dispatch_atomic_inc(count);
histogram();
test_stop();
exit(0);
} else if (iterdone > 0) {
dispatch_atomic_inc(count);
}
}
bool iteration_wrap::deref()
{
return dispatch_atomic_dec( &ref ) == 0;
}
