report_tns/wns

app/StaMain.cc

@@ -119,7 +119,7 @@ staTclAppInit(Tcl_Interp *interp)
   Tcl_Eval(interp, "namespace import sta::*");
 
   if (!findCmdLineFlag(argc, argv, "-no_init"))
-    sourceTclFileEchoVerbose(init_filename, interp);
+    sourceTclFile(init_filename, true, true, interp);
 
   // "-x cmd" is evaled before -f file is sourced.
   char *cmd = findCmdLineKey(argc, argv, "-x");
@@ -129,7 +129,7 @@ staTclAppInit(Tcl_Interp *interp)
   // "-f cmd_file" is evaled as "source -echo -verbose file".
   char *file = findCmdLineKey(argc, argv, "-f");
   if (file)
-    sourceTclFileEchoVerbose(file, interp);
+    sourceTclFile(file, true, true, interp);
 
   return TCL_OK;
 }
@@ -157,16 +157,21 @@ findCmdLineKey(int argc,
     if (stringEq(arg, key) && argi + 1 < argc)
       return argv[argi + 1];
   }
-  return 0;
+  return nullptr;
 }
 
 // Use overridden version of source to echo cmds and results.
 void
-sourceTclFileEchoVerbose(const char *filename,
+sourceTclFile(const char *filename,
-			 Tcl_Interp *interp)
+	      bool echo,
+	      bool verbose,
+	      Tcl_Interp *interp)
 {
   string cmd;
-  stringPrint(cmd, "source -echo -verbose %s", filename);
+  stringPrint(cmd, "source %s%s%s",
+	      echo ? "-echo " : "",
+	      verbose ? "-verbose " : "",
+	      filename);
   Tcl_Eval(interp, cmd.c_str());
 }
 

app/StaMain.hh

@@ -75,8 +75,10 @@ parseCmdsArg(int argc,
 	     bool &compatibility_cmds);
 
 void
-sourceTclFileEchoVerbose(const char *filename,
+sourceTclFile(const char *filename,
-			 Tcl_Interp *interp);
+	      bool echo,
+	      bool verbose,
+	      Tcl_Interp *interp);
 
 } // namespace
 #endif

doc/ChangeLog.txt

@@ -107,6 +107,12 @@ single pin.
 
   disconnect_pin net pin
 
+The report_tns and report_wns commands print the value returned by
+total_negative_slack and worst_negative_slack respectively.
+
+  report_tns
+  report_wns
+
 Release 1.11.0 2017/08/18
 -------------------------
 

tcl/Sta.tcl

@@ -479,6 +479,42 @@ proc_redirect report_check_types {
 
 ################################################################
 
+define_sta_cmd_args "report_tns" { [-digits digits]}
+
+proc_redirect report_tns {
+  global sta_report_default_digits
+
+  parse_key_args "report_tns" args keys {-digits} flags {}
+  if [info exists keys(-digits)] {
+    set digits $keys(-digits)
+    check_positive_integer "-digits" $digits
+  } else {
+    set digits $sta_report_default_digits
+  }
+
+  puts "tns [format %.${digits}f [total_negative_slack]]"
+}
+
+################################################################
+
+define_sta_cmd_args "report_wns" { [-digits digits]}
+
+proc_redirect report_wns {
+  global sta_report_default_digits
+
+  parse_key_args "report_wns" args keys {-digits} flags {}
+  if [info exists keys(-digits)] {
+    set digits $keys(-digits)
+    check_positive_integer "-digits" $digits
+  } else {
+    set digits $sta_report_default_digits
+  }
+
+  puts "wns [format %.${digits}f [worst_negative_slack]]"
+}
+
+################################################################
+
 define_sta_cmd_args "report_dcalc" \
   {[-from from_pin] [-to to_pin] [-corner corner_name] [-min] [-max] [-digits digits]}
 

tcl/StaTcl.i

@@ -2960,12 +2960,6 @@ set_wire_load_mode_cmd(const char *mode_name)
     Sta::sta()->setWireloadMode(mode);
 }
 
-Wireload *
-wireload_defaulted(MinMax *min_max)
-{
-  return Sta::sta()->sdc()->wireloadDefaulted(min_max);
-}
-
 void
 set_net_resistance(Net *net,
 		   const MinMaxAll *min_max,