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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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32
src/nix/sigs.cc
View file

@ -64,19 +64,21 @@ struct CmdCopySigs : StorePathsCommand
StringSet newSigs;
for (auto & store2 : substituters) {
if (!store2->isValidPath(storePath)) continue;
auto info2 = store2->queryPathInfo(storePath);
try {
auto info2 = store2->queryPathInfo(storePath);
/* Don't import signatures that don't match this
binary. */
if (info.narHash != info2.narHash ||
info.narSize != info2.narSize ||
info.references != info2.references)
continue;
/* Don't import signatures that don't match this
binary. */
if (info->narHash != info2->narHash ||
info->narSize != info2->narSize ||
info->references != info2->references)
continue;
for (auto & sig : info2.sigs)
if (!info.sigs.count(sig))
newSigs.insert(sig);
for (auto & sig : info2->sigs)
if (!info->sigs.count(sig))
newSigs.insert(sig);
} catch (InvalidPath &) {
}
}
if (!newSigs.empty()) {
@ -122,8 +124,8 @@ struct CmdQueryPathSigs : StorePathsCommand
for (auto & storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
std::cout << storePath << " ";
if (info.ultimate) std::cout << "ultimate ";
for (auto & sig : info.sigs)
if (info->ultimate) std::cout << "ultimate ";
for (auto & sig : info->sigs)
std::cout << sig << " ";
std::cout << "\n";
}
@ -163,12 +165,12 @@ struct CmdSignPaths : StorePathsCommand
for (auto & storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
auto info2(info);
auto info2(*info);
info2.sigs.clear();
info2.sign(secretKey);
assert(!info2.sigs.empty());
if (!info.sigs.count(*info2.sigs.begin())) {
if (!info->sigs.count(*info2.sigs.begin())) {
store->addSignatures(storePath, info2.sigs);
added++;
}