1 files changed, 46 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.perf/gmonster-null-lookup.py b/gdb/testsuite/gdb.perf/gmonster-null-lookup.py
new file mode 100644
index 0000000..dc18d89
--- /dev/null
+++ b/gdb/testsuite/gdb.perf/gmonster-null-lookup.py
@@ -0,0 +1,46 @@
+# Copyright (C) 2015 Free Software Foundation, 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 <http://www.gnu.org/licenses/>.
+
+# Test handling of lookup of a symbol that doesn't exist.
+# Efficient handling of this case is important, and not just for typos.
+# Sometimes the debug info for the needed object isn't present.
+
+from perftest import perftest
+from perftest import measure
+from perftest import utils
+
+class NullLookup(perftest.TestCaseWithBasicMeasurements):
+    def __init__(self, name, run_names, binfile):
+        # We want to measure time in this test.
+        super(NullLookup, self).__init__(name)
+        self.run_names = run_names
+        self.binfile = binfile
+
+    def warm_up(self):
+        pass
+
+    def execute_test(self):
+        for run in self.run_names:
+            this_run_binfile = "%s-%s" % (self.binfile,
+                                          utils.convert_spaces(run))
+            utils.select_file(this_run_binfile)
+            utils.runto_main()
+            utils.safe_execute("mt expand-symtabs")
+            iteration = 5
+            while iteration > 0:
+                utils.safe_execute("mt flush-symbol-cache")
+                func = lambda: utils.safe_execute("p symbol_not_found")
+                self.measure.measure(func, run)
+                iteration -= 1