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* Use std::tr1::unordered_set instead of std::set for the symbol

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table.  This gives a 10% speed increase on `nix-instantiate
  /etc/nixos/nixos -A system --readonly-mode'.
This commit is contained in:
Eelco Dolstra 2010-04-13 14:34:11 +00:00
parent 7d47498b5e
commit 816f9c0f6f
2 changed files with 8 additions and 1 deletions
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src/libexpr/eval.cc
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@ -1058,6 +1058,7 @@ void EvalState::printStats()
printMsg(v, format(" stack space per eval() level: %1% bytes") % ((&x - deepestStack) / (float) maxRecursionDepth));
printMsg(v, format(" values allocated: %1%") % nrValues);
printMsg(v, format(" environments allocated: %1%") % nrEnvs);
printMsg(v, format(" symbols in symbol table: %1%") % symbols.size());
}