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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Small helper class for asserting uses of a class are non-reentrant. */
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#ifndef mozilla_ReentrancyGuard_h_
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#define mozilla_ReentrancyGuard_h_
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/GuardObjects.h"
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namespace mozilla {
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/* Useful for implementing containers that assert non-reentrancy */
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class ReentrancyGuard
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{
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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#ifdef DEBUG
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bool& entered;
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#endif
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public:
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template<class T>
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#ifdef DEBUG
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ReentrancyGuard(T& obj
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: entered(obj.entered)
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#else
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ReentrancyGuard(T&
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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#endif
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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#ifdef DEBUG
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MOZ_ASSERT(!entered);
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entered = true;
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#endif
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}
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~ReentrancyGuard()
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{
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#ifdef DEBUG
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entered = false;
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#endif
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}
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private:
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ReentrancyGuard(const ReentrancyGuard&) MOZ_DELETE;
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void operator=(const ReentrancyGuard&) MOZ_DELETE;
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};
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} // namespace mozilla
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#endif // mozilla_ReentrancyGuard_h_
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