add Concurrency & Parallelisim

iface/CMakeLists.txt

@@ -16,7 +16,9 @@ target_sources(nf7_iface
     common/task.hh
     common/value.hh
     data/interface.hh
+    subsys/concurrency.hh
     subsys/interface.hh
+    subsys/parallelism.hh
     env.hh
     file.hh
     lambda.hh

iface/subsys/concurrency.hh

@@ -0,0 +1,17 @@
+// No copyright
+#pragma once
+
+#include "iface/common/task.hh"
+#include "iface/subsys/interface.hh"
+
+
+namespace nf7::subsys {
+
+class Concurrency : public Interface, public TaskQueue {
+ public:
+  using Interface::Interface;
+};
+
+using WrappedConcurrency = WrappedTaskQueue<Concurrency>;
+
+}  // namespace nf7::subsys

iface/subsys/parallelism.hh

@@ -0,0 +1,17 @@
+// No copyright
+#pragma once
+
+#include "iface/common/task.hh"
+#include "iface/subsys/interface.hh"
+
+
+namespace nf7::subsys {
+
+class Parallelism : public Interface, public TaskQueue {
+ public:
+  using Interface::Interface;
+};
+
+using WrappedParallelism = WrappedTaskQueue<Parallelism>;
+
+}  // namespace nf7::subsys