1// Copyright (c) 2008 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "base/test/test_file_util.h" 6 7#include <fcntl.h> 8#include <sys/stat.h> 9#include <sys/types.h> 10 11#include "base/file_path.h" 12 13namespace file_util { 14 15bool EvictFileFromSystemCache(const FilePath& file) { 16 int fd = open(file.value().c_str(), O_RDONLY); 17 if (fd < 0) 18 return false; 19 if (fdatasync(fd) != 0) 20 return false; 21 if (posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED) != 0) 22 return false; 23 close(fd); 24 return true; 25} 26 27} // namespace file_util 28