set button sensitivity based on running state

gui/gdbutil.py

@@ -0,0 +1,28 @@
+# Copyright (C) 2015 Tom Tromey <tom@tromey.com>
+
+# 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 <http://www.gnu.org/licenses/>.
+
+# Little gdb utilities.
+
+import gdb
+from gui.startup import in_gdb_thread
+
+@in_gdb_thread
+def is_running():
+    """Return True if the inferior is running."""
+    # This seems good enough for now.
+    # We can deal with scheduler locking and the rest later.
+    if gdb.selected_thread() and gdb.selected_thread().is_running():
+        return True
+    return False