fix(midout): fix brain opr midout 2/2 (also see a6aa1574)

fix extern_c_opr midout

GitOrigin-RevId: 7de4f650d1c8fc3a6a4cedb04b4386c4cd66600f

python_module/src/cpp/opr_defs.cpp

@@ -224,7 +224,7 @@ SymbolVarArray _Opr::extern_c_opr_placeholder(
         }
     }
 
-    auto opr = serialization::ExternCOprRunner::make_placeholder(
+    auto opr = opr::ExternCOprRunner::make_placeholder(
             inputs, cpp_output_shapes, dump_name, PyBytes_AsString(data_bytes),
             PyBytes_Size(data_bytes), config, cpp_output_dtypes);
     SymbolVarArray ret;

src/serialization/impl/extern_c_opr.cpp

@@ -18,6 +18,7 @@
 
 using namespace mgb;
 using namespace serialization;
+using namespace opr;
 
 namespace {
 

src/serialization/impl/extern_c_opr.sereg.h

@@ -16,18 +16,19 @@ namespace mgb {
 
 namespace serialization {
 template <>
-struct OprLoadDumpImpl<ExternCOprRunner, 0> {
+struct OprLoadDumpImpl<opr::ExternCOprRunner, 0> {
     static void dump(OprDumpContext& ctx, const cg::OperatorNodeBase& opr) {
-        ExternCOprRunner::dump(ctx, opr);
+        opr::ExternCOprRunner::dump(ctx, opr);
     }
 
     static cg::OperatorNodeBase* load(OprLoadContext& ctx,
                                       const cg::VarNodeArray& inputs,
                                       const OperatorNodeConfig& config) {
-        return ExternCOprRunner::load(ctx, inputs, config);
+        return opr::ExternCOprRunner::load(ctx, inputs, config);
     }
 };
 
+using ExternCOprRunner = opr::ExternCOprRunner;
 MGB_SEREG_OPR(ExternCOprRunner, 0);
 MGB_REG_OPR_SHALLOW_COPY(ExternCOprRunner, ExternCOprRunner::shallow_copy);
 }  // namespace serialization

src/serialization/include/megbrain/serialization/extern_c_opr_io.h

@@ -16,7 +16,7 @@
 #include "megbrain/serialization/opr_registry.h"
 
 namespace mgb {
-namespace serialization {
+namespace opr {
 
 //! an operator to run extern C oprs
 MGB_DEFINE_OPR_CLASS(ExternCOprRunner,
@@ -68,10 +68,11 @@ public:
     static bool unregister_loader(const char* name);
 
     //! impl for serialization dump
-    static void dump(OprDumpContext& ctx, const cg::OperatorNodeBase& opr);
+    static void dump(serialization::OprDumpContext& ctx,
+                     const cg::OperatorNodeBase& opr);
 
     //! impl for serialization load
-    static cg::OperatorNodeBase* load(OprLoadContext& ctx,
+    static cg::OperatorNodeBase* load(serialization::OprLoadContext& ctx,
                                       const cg::VarNodeArray& inputs,
                                       const OperatorNodeConfig& config);
 
@@ -88,7 +89,7 @@ public:
     static TensorShape tensor_shape_from_c(const MGBTensorShape& shape);
 };
 
-}  // namespace serialization
+}  // namespace opr
 }  // namespace mgb
 
 // vim: syntax=cpp.doxygen foldmethod=marker foldmarker=f{{{,f}}}

src/serialization/include/megbrain/serialization/sereg.h

@@ -179,9 +179,18 @@ namespace {  \
     } \
     MGB_SEREG_OPR_INTL_CALL_ENTRY(_cls, _OprReg##_cls)
 
+//! use to check type is complete or not, midout need a complete type
+template <class T, class = void>
+struct IsComplete : std::false_type {};
+
+template <class T>
+struct IsComplete<T, decltype(void(sizeof(T)))> : std::true_type {};
+
 //! call OprRegistry::add with only loader, used for backward compatibility
 #define MGB_SEREG_OPR_COMPAT(_name, _load)                                  \
     namespace {                                                             \
+    static_assert(IsComplete<_name>(),                                      \
+                  "need a complete type for MGB_SEREG_OPR_COMPAT");         \
     struct _OprReg##_name {                                                 \
         static cg::OperatorNodeBase* compat_loader(                         \
                 serialization::OprLoadContext& ctx,                         \

src/serialization/test/extern_c_opr.cpp

@@ -182,7 +182,7 @@ std::vector<uint8_t> create_graph_dump(float bias, float extra_scale,
     auto x = opr::Host2DeviceCopy::make(*graph, host_x);
     if (sleep)
         x = opr::Sleep::make(x, sleep);
-    x = serialization::ExternCOprRunner::make_placeholder(
+    x = opr::ExternCOprRunner::make_placeholder(
                 {x}, {TensorShape{1}},
                 dtype == MGB_DTYPE_FLOAT32
                         ? "bias_adder_dump"
@@ -280,7 +280,7 @@ TEST(TestExternCOpr, Dedup) {
         auto graph = ComputingGraph::make();
         auto x = opr::Host2DeviceCopy::make(*graph, host_x);
         auto make_opr = [x](float bias) {
-            return ExternCOprRunner::make_from_desc(
+            return opr::ExternCOprRunner::make_from_desc(
                     {x.node()}, MGBOprDescImpl<>::make(bias));
         };
         auto y0 = make_opr(0.5), y1 = make_opr(0.6), y2 = make_opr(0.5);

src/serialization/test/extern_c_opr_v23.cpp

@@ -115,7 +115,7 @@ std::vector<uint8_t> create_graph_dump(float bias, float extra_scale,
     auto x = opr::Host2DeviceCopy::make(*graph, host_x);
     if (sleep)
         x = opr::Sleep::make(x, sleep);
-    x = serialization::ExternCOprRunner::make_placeholder(
+    x = opr::ExternCOprRunner::make_placeholder(
                 {x}, {TensorShape{1}}, "bias_adder_dump_v23", &bias, sizeof(bias))
                 ->output(0);
     if (extra_scale)