Adapt test program future.cpp -> promise.cpp

rt/test/future.cpp → rt/test/promise.cpp

@@ -10,13 +10,13 @@ int fibo(int n) {
   return fibo(n - 1) + fibo(n - 2);
 }
 
-Task<void> consume(Future<int> & f) {
-  printf("[%u] waiting on future\n", Scheduler::thread_id);
+Task<void> consume(Promise<int> & f) {
+  printf("[%u] waiting on promise\n", Scheduler::thread_id);
   int value = co_await f;
-  printf("[%u] future yielded %d\n", Scheduler::thread_id, value);
+  printf("[%u] promise yielded %d\n", Scheduler::thread_id, value);
 }
 
-Task<void> produce(Future<int> & f, int n) {
+Task<void> produce(Promise<int> & f, int n) {
   int value = fibo(n);
   printf("[%u] producing %d\n", Scheduler::thread_id, value);
   f.put(value);
@@ -24,7 +24,7 @@ Task<void> produce(Future<int> & f, int n) {
 }
 
 Join<void> parallel() {
-  Future<int> f;
+  Promise<int> f;
   printf("[%u] fork(consume())\n", Scheduler::thread_id);
   co_await fork(consume(f));
   printf("[%u] fork(produce())\n", Scheduler::thread_id);