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Squashed 'gitstatus/' changes from 1c74c8db..0d23fbd1

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0d23fbd1 comments
9c19c9c4 fix a typo in install that prevents the locally built gitstatusd from being used
92fd143f doc cleanup

git-subtree-dir: gitstatus
git-subtree-split: 0d23fbd117ad6afe52fdbd96d08cf38f941be4d3
This commit is contained in:
Roman Perepelitsa 2020-06-14 10:29:29 +02:00
commit 0717e57ff4
4 changed files with 15 additions and 13 deletions
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12
src/dir.cc
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@ -116,16 +116,18 @@ bool ListDir(int dir_fd, Arena& arena, std::vector<char*>& entries, bool precomp
entries.clear();
return false;
}
if (n == 0) break;
for (int pos = 0; pos < n;) {
auto* ent = reinterpret_cast<linux_dirent64*>(buf + pos);
if (!Dots(ent->d_name)) entries.push_back(ent->d_name);
pos += ent->d_reclen;
// It's tempting to bail here if n + sizeof(linux_dirent64) + 512 <= n. After all, there
// was enough space for another entry but SYS_getdents64 didn't write it, so this must be
// the end of the directory listing, right? Unfortuatenly, no. SYS_getdents64 is finicky.
// It sometimes writes a partial list of entries even if the full list would fit.
}
if (n == 0) break;
// The following optimization relies on SYS_getdents64 always returning as many
// entries as would fit. This is not guaranteed by the specification and I don't
// know if this is true in practice. The optimization has no measurable effect on
// gitstatus performance, so it's turned off.
//
// if (n + sizeof(linux_dirent64) + 512 <= kBufSize) break;
}
if (case_sensitive) {