gecko-dev/dom/quota/Utilities.h
2015-05-03 15:32:37 -04:00

37 lines
956 B
C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_quota_utilities_h__
#define mozilla_dom_quota_utilities_h__
#include "mozilla/dom/quota/QuotaCommon.h"
BEGIN_QUOTA_NAMESPACE
inline void
IncrementUsage(uint64_t* aUsage, uint64_t aDelta)
{
// Watch for overflow!
if ((UINT64_MAX - *aUsage) < aDelta) {
NS_WARNING("Usage exceeds the maximum!");
*aUsage = UINT64_MAX;
}
else {
*aUsage += aDelta;
}
}
inline bool
PatternMatchesOrigin(const nsACString& aPatternString, const nsACString& aOrigin)
{
// Aren't we smart!
return StringBeginsWith(aOrigin, aPatternString);
}
END_QUOTA_NAMESPACE
#endif // mozilla_dom_quota_utilities_h__