1 # Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
2 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
4 # This library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Lesser General Public
6 # License as published by the Free Software Foundation; either
7 # version 2.1 of the License.
9 # This library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Lesser General Public License for more details.
14 # You should have received a copy of the GNU Lesser General Public
15 # License along with this library; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 # File : salome_shared_modules.py
26 This module with help of import_hook and *_shared_modules
27 filters imports when using the embedded Python interpretor.
29 Some imports can't be done more than once.
30 This is related to the multi study feature that is implemented
31 by using the Python multi interpreter feature.
32 Some modules register objects or classes by calling modules
33 implemented in C. These operations can't be done multiple times.
34 So it's very important to control these imports.
37 - PyQt : import qt calls a C module to register classes
38 - OmniORB : import *_idl calls a C module to register CORBA interfaces
41 - First : the module salome_shared_modules is imported by main Python interpretor.
42 It will keep a dictionnary and a list that are shared among all
43 the subinterpretors and imports import_hook module that replaces
44 the standard import mechanism par one that prevents more than one import
45 for some modules identified by name (call register_name) or by a
46 validator (call register_pattern).
48 Calls to register_name and register_pattern are done in modules named *_shared_modules
49 that could be found in the path SALOMEPATH
55 # shared_imported, patterns, register_name, register_pattern
56 # will be shared by all Python sub interpretors
57 from import_hook import patterns
58 from import_hook import register_name
59 from import_hook import register_pattern
61 register_name("salome_shared_modules")
62 register_name("omniORB")
63 register_name("omnipatch")
64 register_pattern(lambda(x):x.endswith("_idl"))
65 register_pattern(lambda(x):x.startswith("omniORB."))
67 from omnipatch import shared_imported
68 shared_imported.update(import_hook.shared_imported)
69 import_hook.shared_imported=shared_imported
71 # Get the SALOMEPATH if set or else use KERNEL_ROOT_DIR that should be set.
72 salome_path=os.environ.get("SALOMEPATH",os.getenv("KERNEL_ROOT_DIR"))
76 # Import all *_shared_modules in the path and store them in list_modules
78 if sys.platform == "win32":
80 path=salome_path.split(splitter)
82 if platform.architecture()[0] == "64bit":
83 if platform.machine() == "ia64":
90 # Import all *_shared_modules in rep
91 for f in glob.glob(os.path.join(rep,libdir,"python"+sys.version[:3],"site-packages","salome","shared_modules","*_shared_modules.py")):
93 name=os.path.splitext(os.path.basename(f))[0]
95 #print name + " REGISTERED"
97 #print name + " IMPORTED"
98 list_modules.append(m)
100 print "Exception during register and import shared module"
104 # If shared modules have been imported before installing import mechanism
105 # we add them to shared_imported
107 for name,module in sys.modules.items():
108 if module and import_hook.is_shared(name) and not shared_imported.has_key(name):
109 #print "Module shared added to shared_imported: ",name
110 shared_imported[name]=module