- Cache the absolute path in the caller's package globals within

  ``repoze.bfg.path`` to get rid of repeated (expensive) calls to
  os.path.abspath.

1 files changed, 10 insertions, 3 deletions

diff --git a/repoze/bfg/path.py b/repoze/bfg/path.py
index fcd317fba..c3d914208 100644
--- a/repoze/bfg/path.py
+++ b/repoze/bfg/path.py
@@ -4,9 +4,16 @@ import sys
 def caller_path(path, level=2):
     if not os.path.isabs(path):
         package_globals = sys._getframe(level).f_globals
-        package_name = package_globals['__name__']
-        package = sys.modules[package_name]
-        prefix = package_path(package)
+        if '__bfg_abspath__' not in package_globals:
+            # this is actually kinda expensive so we memoize the result
+            package_name = package_globals['__name__']
+            package = sys.modules[package_name]
+            prefix = package_path(package)
+            try:
+                package_globals['__bfg_abspath__'] = prefix
+            except:
+                pass
+        prefix = package_globals['__bfg_abspath__']
         path = os.path.join(prefix, path)
     return path