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Fix NDArray ToDLPack Bug #13698

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merged 2 commits into from Dec 21, 2018
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Fix NDArray ToDLPack Bug #13698

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ca5a950
fix the reference of tblob
wkcn Dec 20, 2018
56ff9ca
check is_none in NDArray::ToDLPack
wkcn Dec 20, 2018
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5 changes: 2 additions & 3 deletions src/ndarray/ndarray.cc
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Expand Up @@ -330,11 +330,10 @@ struct NDArrayDLManager {
};

DLManagedTensor* NDArray::ToDLPack() const {
CHECK(!is_none()) << "NDArray is not initialized";
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Just to confirm. Such check should never fail as ToDLPack will only be called after wait_to_read or wait_to_write so the NDArray should always be initialized.

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Yes. But when users use C++ API directly, they may forget to call WaitToRead or WaitToWrite before calling ToDLPack.

NDArrayDLManager* dlmanager(new NDArrayDLManager);
dlmanager->handle = *this;
if (!is_none()) {
dlmanager->tensor.dl_tensor = data().dltensor();
}
dlmanager->tensor.dl_tensor = dlmanager->handle.data().dltensor();
dlmanager->tensor.manager_ctx = dlmanager;
dlmanager->tensor.deleter = [](DLManagedTensor* dlmanager){
delete static_cast<NDArrayDLManager*>(dlmanager->manager_ctx);
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