Merge commit 'd50397b372e8f0a4cf473591a13b1305a8278b06' of github.com…

…:ponylang/ponyc into support-openssl1.1-simple-travis

Test PR "Don't suspend schedulers if terminating and reset
steal_attempts on wake" ponylang#2447

src/libponyrt/sched/scheduler.c

@@ -418,9 +418,11 @@ static pony_actor_t* steal(scheduler_t* sched)
       {
         // if we're the highest active scheduler thread
         // and there are more active schedulers than the minimum requested
+        // and we're not terminating
         if ((sched == &scheduler[current_active_scheduler_count - 1])
-          && (current_active_scheduler_count > min_scheduler_count) &&
-          !atomic_exchange_explicit(&scheduler_count_changing, true,
+          && (current_active_scheduler_count > min_scheduler_count)
+          && (!sched->terminate)
+          && !atomic_exchange_explicit(&scheduler_count_changing, true,
             memory_order_acquire))
         {
           // let sched 0 know we're suspending
@@ -459,6 +461,10 @@ static pony_actor_t* steal(scheduler_t* sched)
 
           // dtrace resume notification
           DTRACE1(THREAD_RESUME, (uintptr_t)sched);
+
+          // reset steal_attempts so we try to steal from all other schedulers
+          // prior to suspending again
+          steal_attempts = 0;
         }
         else if(!sched->asio_noisy)
         {