From: Vivien Maisonneuve <v.maisonneuve@gmail.com>
Date: Wed, 18 Jun 2014 16:11:11 +0000 (+0200)
Subject: Global context
X-Git-Tag: 1.0~249
X-Git-Url: https://svn.cri.ensmp.fr/git/linpy.git/commitdiff_plain/76c0aa89c5a4008aaf0de557dd659917518aa41a?ds=inline

Global context
---

diff --git a/pypol/linear.py b/pypol/linear.py
index 348294c..07c6293 100644
--- a/pypol/linear.py
+++ b/pypol/linear.py
@@ -42,6 +42,9 @@ def _polymorphic_operator(func):
     return wrapper
 
 
+_main_ctx = Context()
+
+
 class Expression:
     """
     This class implements linear expressions.
@@ -498,8 +501,7 @@ class Polyhedron:
         if symbols is None:
             symbols = self.symbols()
         num_coefficients = len(symbols)
-        ctx = Context()
-        space = libisl.isl_space_set_alloc(ctx, 0, num_coefficients)
+        space = libisl.isl_space_set_alloc(_main_ctx, 0, num_coefficients)
         bset = libisl.isl_basic_set_universe(libisl.isl_space_copy(space))
         ls = libisl.isl_local_space_from_space(space)
         ceq = libisl.isl_equality_alloc(libisl.isl_local_space_copy(ls))