Add a xsocs wide config class

xsocs/__init__.py

@@ -31,6 +31,10 @@ __date__ = "26/04/2018"
 
 import os as _os
 import logging as _logging
+from ._config import Config as _Config
+
+config = _Config()
+"""Global configuration shared with the whole library"""
 
 # Attach a do nothing logging handler for xsocs
 _logging.getLogger(__name__).addHandler(_logging.NullHandler())

xsocs/_config.py

+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2018 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ###########################################################################*/
+"""This module contains library wide configuration.
+"""
+
+__authors__ = ["T. Vincent"]
+__license__ = "MIT"
+__date__ = "04/09/2018"
+
+
+from multiprocessing import cpu_count
+
+
+class Config(object):
+    """
+    Class containing shared global configuration for the silx library.
+    """
+
+    DEFAULT_PROCESS_NUMBER = cpu_count()
+    """Default max number of processes to use (Use number of core by default)
+    
+    This value must be strictly positive.
+    """