larroy 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_r249075880
##########
File path: src/engine/threaded_engine.cc
##########
@@ -478,10 +478,14 @@ inline void ThreadedEngine::ThrowException(ThreadedVar*
threaded_var) {
return;
}
-void ThreadedEngine::OnCompleteStatic(
- Engine *engine, void *opr_block_) {
+void ThreadedEngine::OnCompleteStatic(Engine *engine, void *opr_block_,
+ const dmlc::Error* error) {
OprBlock *opr_block = static_cast<OprBlock*>(opr_block_);
ThreadedOpr *threaded_opr = opr_block->opr;
+ if (error != nullptr) {
+ auto ex_p = std::make_exception_ptr(*error);
+ threaded_opr->opr_exception = std::make_shared<std::exception_ptr>(ex_p);
Review comment:
Isn't exception_ptr already reference counted? Do we need to wrap it again
in make_shared?
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