mfbt/ReentrancyGuard.h
author Kent Tamura <tkent@chromium.org>
Tue, 05 Mar 2019 12:13:23 +0000
changeset 464535 9af6b8db40bd483d631ba7535aa16a3de3ae345f
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1528029 [wpt PR 15376] - Remove a special handling for XLink namespace in XMLSerializer, a=testonly Automatic update from web-platform-tests Remove a special handling for XLink namespace in XMLSerializer The new behavior matches to the standard, Firefox, and Safari. Bug: 927626 Change-Id: Ifc6687992c10fbca13faaaeb4a56e59f5469f594 Reviewed-on: https://chromium-review.googlesource.com/c/1469843 Reviewed-by: Yoshifumi Inoue <yosin@chromium.org> Commit-Queue: Kent Tamura <tkent@chromium.org> Cr-Commit-Position: refs/heads/master@{#631984} -- wpt-commits: 6fb30bc55bf721c87d2ff32640deefc1b01061ab wpt-pr: 15376

/* -*- 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/. */

/* Small helper class for asserting uses of a class are non-reentrant. */

#ifndef mozilla_ReentrancyGuard_h
#define mozilla_ReentrancyGuard_h

#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/GuardObjects.h"

namespace mozilla {

/* Useful for implementing containers that assert non-reentrancy */
class MOZ_RAII ReentrancyGuard {
  MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
#ifdef DEBUG
  bool& mEntered;
#endif

 public:
  template <class T>
#ifdef DEBUG
  explicit ReentrancyGuard(T& aObj MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
      : mEntered(aObj.mEntered)
#else
  explicit ReentrancyGuard(T& MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
#endif
  {
    MOZ_GUARD_OBJECT_NOTIFIER_INIT;
#ifdef DEBUG
    MOZ_ASSERT(!mEntered);
    mEntered = true;
#endif
  }
  ~ReentrancyGuard() {
#ifdef DEBUG
    mEntered = false;
#endif
  }

 private:
  ReentrancyGuard(const ReentrancyGuard&) = delete;
  void operator=(const ReentrancyGuard&) = delete;
};

}  // namespace mozilla

#endif /* mozilla_ReentrancyGuard_h */