Shortcut store files before lstat
readdir() already returns the inode numbers, so we don't need to call lstat to know if a file was already linked or not.
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@ -315,6 +315,7 @@ private:
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#endif
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InodeHash loadInodeHash();
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Strings readDirectoryIgnoringInodes(const Path & path, const InodeHash & inodeHash, OptimiseStats & stats);
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void optimisePath_(OptimiseStats & stats, const Path & path, InodeHash & inodeHash);
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// Internal versions that are not wrapped in retry_sqlite.
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@ -42,7 +42,7 @@ struct MakeReadOnly
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LocalStore::InodeHash LocalStore::loadInodeHash()
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{
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printMsg(lvlDebug, "loading hash inodes in memory");
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InodeHash hashes;
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InodeHash inodeHash;
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AutoCloseDir dir = opendir(linksDir.c_str());
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if (!dir) throw SysError(format("opening directory `%1%'") % linksDir);
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@ -51,16 +51,42 @@ LocalStore::InodeHash LocalStore::loadInodeHash()
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while (errno = 0, dirent = readdir(dir)) { /* sic */
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checkInterrupt();
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// We don't care if we hit non-hash files, anything goes
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hashes.insert(dirent->d_ino);
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inodeHash.insert(dirent->d_ino);
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}
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if (errno) throw SysError(format("reading directory `%1%'") % linksDir);
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printMsg(lvlInfo, format("loaded %1% hash inodes") % hashes.size());
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printMsg(lvlInfo, format("loaded %1% hash inodes") % inodeHash.size());
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return hashes;
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return inodeHash;
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}
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void LocalStore::optimisePath_(OptimiseStats & stats, const Path & path, InodeHash & hashes)
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Strings LocalStore::readDirectoryIgnoringInodes(const Path & path, const InodeHash & inodeHash, OptimiseStats & stats)
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{
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Strings names;
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AutoCloseDir dir = opendir(path.c_str());
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if (!dir) throw SysError(format("opening directory `%1%'") % path);
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struct dirent * dirent;
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while (errno = 0, dirent = readdir(dir)) { /* sic */
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checkInterrupt();
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if (inodeHash.count(dirent->d_ino)) {
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printMsg(lvlDebug, format("`%1%' is already linked") % dirent->d_name);
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stats.totalFiles++;
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continue;
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}
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string name = dirent->d_name;
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if (name == "." || name == "..") continue;
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names.push_back(name);
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}
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if (errno) throw SysError(format("reading directory `%1%'") % path);
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return names;
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}
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void LocalStore::optimisePath_(OptimiseStats & stats, const Path & path, InodeHash & inodeHash)
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{
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checkInterrupt();
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@ -69,9 +95,9 @@ void LocalStore::optimisePath_(OptimiseStats & stats, const Path & path, InodeHa
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throw SysError(format("getting attributes of path `%1%'") % path);
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if (S_ISDIR(st.st_mode)) {
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Strings names = readDirectory(path);
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Strings names = readDirectoryIgnoringInodes(path, inodeHash, stats);
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foreach (Strings::iterator, i, names)
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optimisePath_(stats, path + "/" + *i, hashes);
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optimisePath_(stats, path + "/" + *i, inodeHash);
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return;
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}
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@ -93,7 +119,8 @@ void LocalStore::optimisePath_(OptimiseStats & stats, const Path & path, InodeHa
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stats.totalFiles++;
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if (st.st_nlink > 1 && hashes.count(st.st_ino)) {
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/* This can still happen on top-level files */
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if (st.st_nlink > 1 && inodeHash.count(st.st_ino)) {
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printMsg(lvlDebug, format("`%1%' is already linked, with %2% other file(s).") % path % (st.st_nlink - 2));
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return;
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}
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@ -116,7 +143,7 @@ void LocalStore::optimisePath_(OptimiseStats & stats, const Path & path, InodeHa
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if (!pathExists(linkPath)) {
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/* Nope, create a hard link in the links directory. */
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if (link(path.c_str(), linkPath.c_str()) == 0) {
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hashes.insert(st.st_ino);
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inodeHash.insert(st.st_ino);
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return;
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}
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if (errno != EEXIST)
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