Implement get_scheduler_thread_id without threads.

1 files changed, 2 insertions, 0 deletions

diff --git a/tdactor/td/actor/ConcurrentScheduler.cpp b/tdactor/td/actor/ConcurrentScheduler.cpp
index ef8b802d3..9a3cf2133 100644
--- a/tdactor/td/actor/ConcurrentScheduler.cpp
+++ b/tdactor/td/actor/ConcurrentScheduler.cpp
@@ -70,11 +70,13 @@ void ConcurrentScheduler::test_one_thread_run() {
   } while (!is_finished_.load(std::memory_order_relaxed));
 }
 
+#if !TD_THREAD_UNSUPPORTED
 thread::id ConcurrentScheduler::get_scheduler_thread_id(int32 sched_id) {
   auto thread_pos = static_cast<size_t>(sched_id - 1);
   CHECK(thread_pos < threads_.size());
   return threads_[thread_pos].get_id();
 }
+#endif
 
 void ConcurrentScheduler::start() {
   CHECK(state_ == State::Start);