yuxihu commented on a change in pull request #13922: Support populating errors
back to MXNet engine in callback
URL: https://github.com/apache/incubator-mxnet/pull/13922#discussion_r248877375
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File path: include/mxnet/engine.h
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@@ -74,15 +74,15 @@ class CallbackOnComplete {
public:
// use implicit copy and assign
/*! \brief involve the callback */
- inline void operator()() const {
- (*callback_)(engine_, param_);
+ inline void operator()(const char* error_msg = nullptr) const {
Review comment:
This sounds like a good idea to make it extendable in the future. We can use
the error message for now.
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