Add profiling.py.

Forgotten in r1911.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1913 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/profiling.py

+#
+# Copyright (C) 2010  Nexedi SA
+#
+# 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 2
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+"""
+Profiling is done with tiny-profiler, a very simple profiler.
+
+It is different from python's built-in profilers in that it requires
+developpers to explicitely put probes on specific methods, reducing:
+- profiling overhead
+- undesired result entries
+
+You can get this profiler at:
+  https://svn.erp5.org/repos/public/erp5/trunk/utils/tiny_profiler
+"""
+
+PROFILING_ENABLED = False
+
+if PROFILING_ENABLED:
+    from tiny_profiler import profiler_decorator, profiler_report
+else:
+    def profiler_decorator(func):
+        return func
+
+    def profiler_report():
+        pass