[SIMIX] Add a comment

[simgrid.git] / src / simix / smx_network.cpp

diff --git a/src/simix/smx_network.cpp b/src/simix/smx_network.cpp
index 266b0cd..7da114e 100644 (file)
--- a/src/simix/smx_network.cpp
+++ b/src/simix/smx_network.cpp
@@ -455,6 +455,8 @@ void simcall_HANDLER_comm_testany(smx_simcall_t simcall, xbt_dynar_t synchros)
 {
   unsigned int cursor;
   smx_synchro_t synchro;
+  // The default result is -1 -- this means, "nothing is ready".
+  // It can be changed below, but only if something matches.
   simcall_comm_testany__set__result(simcall, -1);
 
   if (MC_is_active() || MC_record_replay_is_active()){