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Show the pid of temporary roots

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Eelco Dolstra 2017-09-14 15:02:52 +02:00
parent da1e4fdfb5
commit 308ecf6361
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GPG key ID: 8170B4726D7198DE
2 changed files with 16 additions and 11 deletions
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25
src/libstore/gc.cc
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@ -196,17 +196,17 @@ void LocalStore::addTempRoot(const Path & path)
}
PathSet LocalStore::readTempRoots(FDs & fds)
std::set<std::pair<pid_t, Path>> LocalStore::readTempRoots(FDs & fds)
{
PathSet tempRoots;
std::set<std::pair<pid_t, Path>> tempRoots;
/* Read the `temproots' directory for per-process temporary root
files. */
DirEntries tempRootFiles = readDirectory(tempRootsDir);
for (auto & i : tempRootFiles) {
for (auto & i : readDirectory(tempRootsDir)) {
Path path = tempRootsDir + "/" + i.name;
pid_t pid = std::stoi(i.name);
debug(format("reading temporary root file '%1%'") % path);
FDPtr fd(new AutoCloseFD(open(path.c_str(), O_CLOEXEC | O_RDWR, 0666)));
if (!*fd) {
@ -247,9 +247,9 @@ PathSet LocalStore::readTempRoots(FDs & fds)
while ((end = contents.find((char) 0, pos)) != string::npos) {
Path root(contents, pos, end - pos);
debug(format("got temporary root '%1%'") % root);
debug("got temporary root '%s'", root);
assertStorePath(root);
tempRoots.insert(root);
tempRoots.emplace(pid, root);
pos = end + 1;
}
@ -347,9 +347,13 @@ Roots LocalStore::findRoots()
Roots roots = findRootsNoTemp();
FDs fds;
pid_t prev = -1;
size_t n = 0;
for (auto & root : readTempRoots(fds))
roots[fmt("{temp:%d}", n++)] = root;
for (auto & root : readTempRoots(fds)) {
if (prev != root.first) n = 0;
prev = root.first;
roots[fmt("{temp:%d:%d}", root.first, n++)] = root.second;
}
return roots;
}
@ -756,7 +760,8 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
per-process temporary root files. So after this point no paths
can be added to the set of temporary roots. */
FDs fds;
state.tempRoots = readTempRoots(fds);
for (auto & root : readTempRoots(fds))
state.tempRoots.insert(root.second);
state.roots.insert(state.tempRoots.begin(), state.tempRoots.end());
/* After this point the set of roots or temporary roots cannot

2
src/libstore/local-store.hh
View file

@ -176,7 +176,7 @@ private:
typedef std::shared_ptr<AutoCloseFD> FDPtr;
typedef list<FDPtr> FDs;
PathSet readTempRoots(FDs & fds);
std::set<std::pair<pid_t, Path>> readTempRoots(FDs & fds);
public: