llvm/llvm/lib/Support/CachePruning.cpp

//===-CachePruning.cpp - LLVM Cache Directory Pruning ---------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the pruning of a directory based on least recently used.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/CachePruning.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"

#define DEBUG_TYPE …

#include <set>
#include <system_error>

usingnamespacellvm;

namespace {
struct FileInfo { … };
} // anonymous namespace

/// Write a new timestamp file with the given path. This is used for the pruning
/// interval option.
static void writeTimestampFile(StringRef TimestampFile) { … }

static Expected<std::chrono::seconds> parseDuration(StringRef Duration) { … }

Expected<CachePruningPolicy>
llvm::parseCachePruningPolicy(StringRef PolicyStr) { … }

/// Prune the cache of files that haven't been accessed in a long time.
bool llvm::pruneCache(StringRef Path, CachePruningPolicy Policy,
                      const std::vector<std::unique_ptr<MemoryBuffer>> &Files) { … }