* src/misc/memusage.cc, src/misc/memusage.hh: New files.

* src/misc/Makefile.am: Add them.
* src/tgbaalgos/gtec/gtec.cc,
src/tgbaalgos/gtec/gtec.hh: Add a "vmsize" statistic.

src/misc/memusage.cc

@@ -0,0 +1,44 @@
+// Copyright (C) 2006  Laboratoire d'Informatique de Paris 6 (LIP6),
+// département Systèmes Répartis Coopératifs (SRC), Université Pierre
+// et Marie Curie.
+//
+// This file is part of Spot, a model checking library.
+//
+// Spot 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 2 of the License, or
+// (at your option) any later version.
+//
+// Spot 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 Spot; see the file COPYING.  If not, write to the Free
+// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+
+#include "memusage.hh"
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <cstdio>
+
+namespace spot
+{
+  int
+  memusage()
+  {
+    int size;
+
+    FILE* file = fopen("/proc/self/statm", "r");
+    if (!file)
+      return -1;
+    int res = fscanf(file, "%d", &size);
+    (void) fclose(file);
+    if (res != 1)
+      return -1;
+    return size;
+  }
+
+}