blob: db237a14f12685662e761f70cfb4ab7a640288fd [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "storage/browser/fileapi/file_stream_reader.h"
#include <stdint.h>
#include "base/time/time.h"
namespace storage {
// Int64->double->int64_t conversions (e.g. through Blink) may lose some
// precision in the microsecond range. Allow 10us delta.
const int kModificationTimeAllowedDeltaMicroseconds = 10;
// Verify if the underlying file has not been modified.
bool FileStreamReader::VerifySnapshotTime(
const base::Time& expected_modification_time,
const base::File::Info& file_info) {
return expected_modification_time.is_null() ||
(expected_modification_time - file_info.last_modified)
.InMicroseconds() < kModificationTimeAllowedDeltaMicroseconds;
} // namespace storage