Array c_WaitableWaitHandle::t_getdependencystack() {
Array result = Array::Create();
if (isFinished()) return result;
hphp_hash_set<int64_t> visited;
auto wait_handle = this;
auto session = AsioSession::Get();
while (wait_handle != nullptr) {
result.append(wait_handle);
visited.insert(wait_handle->t_getid());
auto context_idx = wait_handle->getContextIdx();
// 1. find parent in the same context
auto p = wait_handle->getParentChain().firstInContext(context_idx);
if (p && visited.find(p->t_getid()) == visited.end()) {
wait_handle = p;
continue;
}
// 2. cross the context boundary
auto context = session->getContext(context_idx);
if (!context) {
break;
}
wait_handle = c_ResumableWaitHandle::getRunning(context->getSavedFP());
auto target_context_idx = wait_handle ? wait_handle->getContextIdx() : 0;
while (context_idx > target_context_idx) {
--context_idx;
result.append(null_object);
}
}
return result;
}
Array c_WaitableWaitHandle::getDependencyStack() {
if (isFinished()) return empty_array();
Array result = Array::Create();
hphp_hash_set<c_WaitableWaitHandle*> visited;
auto current_handle = this;
auto session = AsioSession::Get();
while (current_handle != nullptr) {
result.append(Variant{current_handle});
visited.insert(current_handle);
auto context_idx = current_handle->getContextIdx();
// 1. find parent in the same context
auto p = current_handle->getParentChain().firstInContext(context_idx);
if (p && visited.find(p) == visited.end()) {
current_handle = p;
continue;
}
// 2. cross the context boundary
auto context = session->getContext(context_idx);
if (!context) {
break;
}
current_handle = c_ResumableWaitHandle::getRunning(context->getSavedFP());
auto target_context_idx =
current_handle ? current_handle->getContextIdx() : 0;
while (context_idx > target_context_idx) {
--context_idx;
result.append(null_object);
}
}
return result;
}