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querySubstitutablePaths(): Don't query paths for which we already have a substituter

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This commit is contained in:
Eelco Dolstra 2016-10-07 19:57:47 +02:00
parent 0c85ef7090
commit edf9eb8181
1 changed files with 16 additions and 3 deletions
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19
src/libstore/local-store.cc
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@ -781,14 +781,27 @@ Path LocalStore::queryPathFromHashPart(const string & hashPart)
PathSet LocalStore::querySubstitutablePaths(const PathSet & paths)
{
if (!settings.useSubstitutes) return PathSet();
auto remaining = paths;
PathSet res;
for (auto & sub : getDefaultSubstituters()) {
if (res.size() == paths.size()) break;
if (remaining.empty()) break;
if (sub->storeDir != storeDir) continue;
if (!sub->wantMassQuery()) continue;
for (auto path : sub->queryValidPaths(paths))
res.insert(path);
auto valid = sub->queryValidPaths(remaining);
PathSet remaining2;
for (auto & path : remaining)
if (valid.count(path))
res.insert(path);
else
remaining2.insert(path);
std::swap(remaining, remaining2);
}
return res;
}