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Range avoids serializes rank only once #276

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May 25, 2021
Merged

Range avoids serializes rank only once #276

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14 changes: 13 additions & 1 deletion src/TiledArray/range.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1118,7 +1118,19 @@ class Range {

template <typename Archive>
void serialize(Archive& ar) {
ar& rank_& datavec_& offset_& volume_;
ar& rank_;
const auto four_x_rank = rank_ << 2;
// read via madness::archive::wrap to be able to
// - avoid having to serialize datavec_'s size
// - read old archives that represented datavec_ by bare ptr
if constexpr (madness::archive::is_input_archive<Archive>::value) {
datavec_.resize(four_x_rank);
ar >> madness::archive::wrap(datavec_.data(), four_x_rank);
} else if constexpr (madness::archive::is_output_archive<Archive>::value) {
ar << madness::archive::wrap(datavec_.data(), four_x_rank);
} else
abort(); // unreachable
ar& offset_& volume_;
}

void swap(Range_& other) {
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