mfbt/ToString.h
author Andrew Osmond <aosmond@mozilla.com>
Tue, 24 Apr 2018 13:51:35 -0400
changeset 415325 1173dccd114e1c86047a6f01e341cf1c4ea8fe9c
parent 193456 91d7659bb35145e10ff737753688e0972c1a79b5
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1444537 - Part 3. Fix how redecode errors could cause animated image state inconsistencies. r=tnikkel We can discard frames from an animated image if the memory footprint exceeds the threshold. This will cause us to redecode frames on demand instead. However decoders can fail to produce the same results on subsequent runs due to differences in memory pressure, etc. If this happens our state can get inconsistent. In particular, if we keep failing on the first frame, we end up in an infinite loop on the decoder thread. Since we don't have the owning image to signal, as we had to release our reference to it after the first pass, we can do little but stop decoding. From the user's perspective, the animation will come to a stop.

/* -*- 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/. */

/* Utilities for converting an object to a string representation. */

#ifndef mozilla_ToString_h
#define mozilla_ToString_h

#include <string>
#include <sstream>

namespace mozilla {

/**
 * A convenience function for converting an object to a string representation.
 * Supports any object which can be streamed to an std::ostream.
 */
template<typename T>
std::string
ToString(const T& aValue)
{
  std::ostringstream stream;
  stream << aValue;
  return stream.str();
}

} // namespace mozilla

#endif /* mozilla_ToString_h */