src/stat_cache-posix.cc

// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>

#include "stat_cache.h"
#include "util.h"

// This implementation calls stat() directly and never caches anything.
class StatCache::Impl {
 public:
  void Enable(bool) {}

  TimeStamp Stat(const std::string& path, std::string* err) const {
    return ::GetFileTimestamp(path, err);
  }
};

StatCache::StatCache() : impl_(new StatCache::Impl()) {}

StatCache::~StatCache() = default;

void StatCache::Enable(bool enabled) {
  impl_->Enable(enabled);
}

void StatCache::Invalidate(const std::string&) {
  // Nothing to do here.
}

TimeStamp StatCache::Stat(const std::string& path, std::string* err) const {
  return impl_->Stat(path, err);
}

void StatCache::Sync() {}

void StatCache::Flush() {}