Function ClearDecrefCache

tensorflow/python/lib/core/ndarray_tensor_bridge.cc:52–61

Actually dereferences cached numpy arrays. REQUIRES being called while holding the GIL.

// Actually dereferences cached numpy arrays. REQUIRES being called while
// holding the GIL.
void ClearDecrefCache() {
  std::vector<void*> cache_copy;
  {
    mutex_lock ml(*DelayedDecrefLock());
    cache_copy.swap(*DecrefCache());
  }
  for (void* obj : cache_copy) {
    Py_DECREF(reinterpret_cast<PyObject*>(obj));
  }
}

// Structure which keeps a reference to a Tensor alive while numpy has a pointer
// to it.