================
@@ -60,38 +59,45 @@ void clang::maybePruneImpl(StringRef Path, time_t
PruneInterval,
// Walk the entire module cache, looking for unused module files and module
// indices.
std::error_code EC;
+ auto TryPruneFile = [&](StringRef FilePath) {
+ // We only care about module and global module index files.
+ StringRef Extension = llvm::sys::path::extension(FilePath);
+ if (Extension != ".pcm" && Extension != ".timestamp" &&
+ llvm::sys::path::filename(FilePath) != "modules.idx")
+ return;
+
+ // Look at this file. If we can't stat it, there's nothing interesting
+ // there.
+ if (llvm::sys::fs::status(FilePath, StatBuf))
+ return;
+
+ // If the file has been used recently enough, leave it there.
+ time_t FileAccessTime = llvm::sys::toTimeT(StatBuf.getLastAccessedTime());
+ if (CurrentTime - FileAccessTime <= PruneAfter)
+ return;
+
+ // Remove the file.
+ llvm::sys::fs::remove(FilePath);
+
+ // Remove the timestamp file.
+ std::string TimpestampFilename = FilePath.str() + ".timestamp";
----------------
cyndyishida wrote:
nit: s/`TimpestampFilename`/TimestampFilename
https://github.com/llvm/llvm-project/pull/190067
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