Performance improvement #216
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By-value sink params can be moved into their final destination
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Given the nature of shared_ptr, I'm not sure this really gains much if at all? |
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Making a copy of a shared_ptr increases (and then decreases at destruction) an atomic reference counter. These atomic operations are thread fences. Thread fences cause the optimizing compiler to reset, which causes performance issues. |
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By-value sink params can be moved into their final destination