wkcn edited a comment on issue #14030: The bug in MXTVMBridge URL: https://github.com/apache/incubator-mxnet/issues/14030#issuecomment-459551740 @tqchen Is it possible to provide an API like this? ```c++ class PackedFunc { public: using FType = std::function<void(TVMArgs args, TVMRetValue* rv)>; PackedFunc() { RemoteCallPacked = [](const PackedFunc* func, TVMArgs args, TVMRetValue* rv) { func->CallPacked(args, rv); }; }; void (*RemoteCallPacked)(const PackedFunc* func, TVMArgs args, TVMRetValue* rv); explicit PackedFunc(FType body) : body_(body) {} inline void CallPacked(TVMArgs args, TVMRetValue* rv) const { body_(args, rv); } static void CallPacked(PackedFunc *func, TVMArgs args, TVMRetValue* rv) { func->CallPacked(args, rv); } template <typename... Args> inline TVMRetValue operator()(Args&&... args) const { const int kNumArgs = sizeof...(Args); const int kArraySize = kNumArgs > 0 ? kNumArgs : 1; TVMValue values[kArraySize]; int type_codes[kArraySize]; detail::for_each(TVMArgsSetter(values, type_codes), std::forward<Args>(args)...); TVMRetValue rv; RemoteCallPacked(this, TVMArgs(values, type_codes, kNumArgs), &rv); return rv; } private: FType body_; }; ... }; ``` The outside program calls `RemoteCallPacked` to avoid the problem of ABI compatibility.
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