and then there was light...

util/Stats.cc

@@ -0,0 +1,52 @@
+// OpenSTA, Static Timing Analyzer
+// Copyright (c) 2018, Parallax Software, Inc.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "Machine.hh"
+#include "StringUtil.hh"
+#include "Debug.hh"
+#include "Stats.hh"
+
+namespace sta {
+
+Stats::Stats(Debug *debug) :
+  debug_(debug)
+{
+  if (debug->statsLevel() > 0) {
+    elapsed_begin_ = elapsedRunTime();
+    user_begin_ = userRunTime();
+    system_begin_ = systemRunTime();
+    memory_begin_ = memoryUsage();
+  }
+}
+
+void
+Stats::report(const char *step)
+{
+  if (debug_->statsLevel() > 0) {
+    double elapsed_end = elapsedRunTime();
+    double user_end = userRunTime();
+    double memory_begin = static_cast<double>(memory_begin_);
+    double memory_end = static_cast<double>(memoryUsage());
+    double memory_delta = memory_end - memory_begin;
+    debug_->print("stats: %5.1f/%5.1fe %5.1f/%5.1fu %5.1f/%5.1fMB %s\n",
+		  elapsed_end - elapsed_begin_, elapsed_end,
+		  user_end - user_begin_, user_end,
+		  memory_delta * 1e-6, memory_end * 1e-6,
+		  step);
+  }
+}
+
+} // namespace