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Move path info caching from BinaryCacheStore to Store

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Caching path info is generally useful. For instance, it speeds up "nix
path-info -rS /run/current-system" (i.e. showing the closure sizes of
all paths in the closure of the current system) from 5.6s to 0.15s.

This also eliminates some APIs like Store::queryDeriver() and
Store::queryReferences().
This commit is contained in:
Eelco Dolstra 2016-04-19 18:50:15 +02:00
parent 608b0265e1
commit e0204f8d46
21 changed files with 318 additions and 353 deletions
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13
src/nix-store/xmlgraph.cc
View file

@ -50,15 +50,10 @@ void printXmlGraph(ref<Store> store, const PathSet & roots)
cout << makeNode(path);
PathSet references;
store->queryReferences(path, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)
{
if (*i != path) {
workList.insert(*i);
cout << makeEdge(*i, path);
for (auto & p : store->queryPathInfo(path)->references) {
if (p != path) {
workList.insert(p);
cout << makeEdge(p, path);
}
}