Document the rationale behind process::accounting.

diff --git a/process.h b/process.h
index 8a9e74c3d63da11bd185dfc525b567cf694e6b61..c7525fd1ce88bb4d4ba572561d95a85b948888fd 100644 (file)
--- a/process.h
+++ b/process.h
@@ -120,7 +120,9 @@ private:
         mesg_accounting ctrl_recv; // ctrl message received
         accounting(): comp_amount(0.0) { }
     };
-    accounting acc;
+    accounting acc;             // use a structure so that it is
+                                // automatically initialized a
+                                // construction
 
     void add_comp_amount(double amount) { acc.comp_amount += amount; }
     void add_data_send_mesg(double amount) {