kern_return_t
thread_dup2(
thread_t source,
thread_t target)
{
kern_return_t result = KERN_SUCCESS;
uint32_t active = 0;
if (source == THREAD_NULL || target == THREAD_NULL || target == source)
return (KERN_INVALID_ARGUMENT);
thread_mtx_lock(source);
active = source->active;
thread_mtx_unlock(source);
if (!active) {
return KERN_TERMINATED;
}
thread_mtx_lock(target);
if (target->active || target->inspection) {
thread_hold(target);
thread_mtx_unlock(target);
if (thread_stop(target, TRUE)) {
thread_mtx_lock(target);
result = machine_thread_dup(source, target);
if (source->affinity_set != AFFINITY_SET_NULL)
thread_affinity_dup(source, target);
thread_unstop(target);
}
else {
thread_mtx_lock(target);
result = KERN_ABORTED;
}
thread_release(target);
}
else
result = KERN_TERMINATED;
thread_mtx_unlock(target);
return (result);
}
kern_return_t
thread_dup(
register thread_t target)
{
thread_t self = current_thread();
kern_return_t result = KERN_SUCCESS;
if (target == THREAD_NULL || target == self)
return (KERN_INVALID_ARGUMENT);
thread_mtx_lock(target);
if (target->active) {
thread_hold(target);
thread_mtx_unlock(target);
if (thread_stop(target, TRUE)) {
thread_mtx_lock(target);
result = machine_thread_dup(self, target);
if (self->affinity_set != AFFINITY_SET_NULL)
thread_affinity_dup(self, target);
thread_unstop(target);
}
else {
thread_mtx_lock(target);
result = KERN_ABORTED;
}
thread_release(target);
}
else
result = KERN_TERMINATED;
thread_mtx_unlock(target);
return (result);
}