add support for --alarm on command line ticket:3928

Compiler/Main/Main.mo

@@ -809,13 +809,18 @@ public function main
 protected
   list<String> args_1;
   GC.ProfStats stats;
+  Integer seconds;
 algorithm
   try
   try
     args_1 := init(args);
     if Flags.isSet(Flags.GC_PROF) then
       print(GC.profStatsStr(GC.getProfStats(), head="GC stats after initialization:") + "\n");
     end if;
+    seconds := Flags.getConfigInt(Flags.ALARM);
+    if seconds > 0 then
+      System.alarm(seconds);
+    end if;
     main2(args_1);
   else
     ErrorExt.clearMessages();

Compiler/Util/Flags.mo

@@ -1297,6 +1297,9 @@ constant ConfigFlag IGNORE_COMMAND_LINE_OPTIONS_ANNOTATION = CONFIG_FLAG(99, "ig
 constant ConfigFlag CALCULATE_SENSITIVITIES = CONFIG_FLAG(100, "calculateSensitivities",
   NONE(), EXTERNAL(), BOOL_FLAG(false), NONE(),
   Util.gettext("Generates sensitivities variables and matrixes."));
+constant ConfigFlag ALARM = CONFIG_FLAG(101, "alarm",
+  SOME("r"), EXTERNAL(), INT_FLAG(0), NONE(),
+  Util.gettext("Sets the number seconds until omc timeouts and exits. Used by the testing framework to terminate infinite running processes."));
 
 protected
 // This is a list of all configuration flags. A flag can not be used unless it's
@@ -1402,7 +1405,8 @@ constant list<ConfigFlag> allConfigFlags = {
   SET_TEARING_VARS,
   SET_RESIDUAL_EQNS,
   IGNORE_COMMAND_LINE_OPTIONS_ANNOTATION,
-  CALCULATE_SENSITIVITIES
+  CALCULATE_SENSITIVITIES,
+  ALARM
 };
 
 public function new