Author: Armin Rigo <[email protected]>
Branch:
Changeset: r1042:c4246fdf279a
Date: 2012-11-17 09:56 +0100
http://bitbucket.org/cffi/cffi/changeset/c4246fdf279a/
Log: Minor performance improvement for PyPy.
diff --git a/cffi/api.py b/cffi/api.py
--- a/cffi/api.py
+++ b/cffi/api.py
@@ -34,7 +34,7 @@
"""Create an FFI instance. The 'backend' argument is used to
select a non-default backend, mostly for tests.
"""
- from . import cparser
+ from . import cparser, model
if backend is None:
try:
import _cffi_backend as backend
@@ -62,8 +62,16 @@
self.cdef('typedef struct _IO_FILE FILE;')
del self._cdefsources[:]
#
- self.NULL = self.cast("void *", 0)
- self.CData, self.CType = backend._get_types()
+ BVoidP = self._get_cached_btype(model.voidp_type)
+ if isinstance(backend, types.ModuleType):
+ # _cffi_backend: attach these constants to the class
+ if not hasattr(FFI, 'NULL'):
+ FFI.NULL = self.cast(BVoidP, 0)
+ FFI.CData, FFI.CType = backend._get_types()
+ else:
+ # ctypes backend: attach these constants to the instance
+ self.NULL = self.cast(BVoidP, 0)
+ self.CData, self.CType = backend._get_types()
def cdef(self, csource, override=False):
"""Parse the given C source. This registers all declared functions,
diff --git a/cffi/model.py b/cffi/model.py
--- a/cffi/model.py
+++ b/cffi/model.py
@@ -168,6 +168,8 @@
BItem = self.totype.get_cached_btype(ffi, finishlist, can_delay=True)
return global_cache(self, ffi, 'new_pointer_type', BItem)
+voidp_type = PointerType(void_type)
+
class ConstPointerType(PointerType):
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