Method cleanup

core/cube/cube-api/src/cube_api.cpp:81–87

}

void CubeAPI::cleanup() {
  if (g_ins != NULL) {
    g_ins->destroy();
    delete g_ins;
    g_ins = NULL;
  }
}

CubeAPI::CubeAPI() : _meta(NULL) {}
CubeAPI::~CubeAPI() { CHECK_EQ(0, bthread_key_delete(_tls_key)); }