joemarshall commented on code in PR #35672:
URL: https://github.com/apache/arrow/pull/35672#discussion_r1242327026
##########
cpp/src/arrow/util/thread_pool.cc:
##########
@@ -60,11 +61,33 @@ struct SerialExecutor::State {
std::thread::id current_thread;
bool paused{false};
bool finished{false};
+#ifndef ARROW_ENABLE_THREADING
+ int max_tasks_running{1};
+ int tasks_running{0};
+#endif
};
-SerialExecutor::SerialExecutor() : state_(std::make_shared<State>()) {}
+#ifndef ARROW_ENABLE_THREADING
+// list of all SerialExecutor objects - as we need to run tasks from all pools
at once in
+// Run()
+std::unordered_set<SerialExecutor*> SerialExecutor::all_executors;
+SerialExecutor* SerialExecutor::current_executor = NULL;
+SerialExecutor* SerialExecutor::GetCurrentExecutor() { return
current_executor; }
+SerialExecutor* SerialExecutor::last_called_executor = NULL;
Review Comment:
Done (and commented on what the variables mean)
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