forked from lix-project/lix
LegacySSHStore: Provide a faster implementation of computeFSClosure()
This avoids the latency of the standard implementation, which can make a huge difference (e.g. 16.5s -> 0.5s on a NixOS system closure).
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@ -204,6 +204,28 @@ struct LegacySSHStore : public Store
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bool isTrusted() override
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{ return true; }
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void computeFSClosure(const PathSet & paths,
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PathSet & out, bool flipDirection = false,
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bool includeOutputs = false, bool includeDerivers = false) override
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{
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if (flipDirection || includeDerivers) {
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Store::computeFSClosure(paths, out, flipDirection, includeOutputs, includeDerivers);
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return;
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}
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auto conn(connections->get());
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conn->to
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<< cmdQueryClosure
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<< includeOutputs
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<< paths;
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conn->to.flush();
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auto res = readStorePaths<PathSet>(*this, conn->from);
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out.insert(res.begin(), res.end());
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}
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};
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static RegisterStoreImplementation regStore([](
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@ -511,7 +511,7 @@ public:
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`storePath' is returned; that is, the closures under the
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`referrers' relation instead of the `references' relation is
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returned. */
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void computeFSClosure(const PathSet & paths,
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virtual void computeFSClosure(const PathSet & paths,
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PathSet & out, bool flipDirection = false,
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bool includeOutputs = false, bool includeDerivers = false);
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