Profiler can get elapsed time of `sendop` (#9345)

paddle/fluid/operators/send_op.cc

@@ -21,6 +21,7 @@ limitations under the License. */
 
 #include <future>
 #include "paddle/fluid/operators/detail/grpc_client.h"
+#include "paddle/fluid/platform/profiler.h"
 
 namespace paddle {
 namespace operators {
@@ -59,6 +60,9 @@ class SendOp : public framework::OperatorBase {
     platform::DeviceContextPool& pool = platform::DeviceContextPool::Instance();
     auto& ctx = *pool.Get(place);
 
+    // For profiling
+    platform::RecordEvent record_event(Type(), &ctx);
+
     auto client_var_name = Output("RPCClient");
     PADDLE_ENFORCE_NOT_NULL(scope.FindVar(client_var_name),
                             "Can not find variable '%s' in the scope.",