.

wcfs/internal/_wcfs.pxd

@@ -28,7 +28,7 @@
 # pinner) is verified when running wendelin.core array tests in wcfs mode.
 
 from golang cimport chan, structZ, string, error, refptr
-from golang cimport context
+from golang cimport context, cxx
 
 from libc.stdint cimport int64_t, uint64_t, uint8_t
 from libcpp.utility cimport pair
@@ -123,6 +123,9 @@ cdef extern from "wcfs/internal/wcfs.h" namespace "wcfs" nogil:
         void    unmap           "_ptr()->unmap"         ()
 
 
+    cxx.dict[int64_t, Tid] _tfileh_pinned(FileH wfileh)
+
+
 # ---- python bits ----
 
 cdef class PyWCFS:

wcfs/internal/_wcfs.pyx

@@ -33,6 +33,7 @@ cdef extern from *:
 
 from ZODB.utils import p64, u64
 from cpython cimport PyBuffer_FillInfo
+from libcpp.unordered_map cimport unordered_map
 
 # XXX hack, why it is needed? (likely top-level wendelin.* redirector
 #from wcfs.internal._wcfs cimport *
@@ -109,6 +110,12 @@ cdef class PyFileH:
         pywmmap.wmmap = wmmap
         return pywmmap
 
+    # XXX for tests
+    property pinned:
+        def __get__(PyFileH pywfileh):
+            # XXX cast: needed for cython to automatically convert to py dict
+            return <unordered_map[int64_t, Tid]> _tfileh_pinned(pywfileh.wfileh)
+
 
 cdef class PyMapping:
 

wcfs/internal/wcfs.cpp

@@ -595,4 +595,8 @@ void _Mapping::decref() {
 }
 
 
+dict<int64_t, zodb::Tid> _tfileh_pinned(FileH fileh) {
+    return fileh->_pinned;
+}
+
 }   // wcfs::

wcfs/internal/wcfs.h

@@ -187,6 +187,10 @@ public:
 };
 
 
+// for testing
+dict<int64_t, zodb::Tid> _tfileh_pinned(FileH fileh);
+
+
 }   // wcfs::
 
 #endif