mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-08 02:14:43 +00:00
e3ebda1914
CLOSED TREE
We don't need these macros anymore, for two reasons:
1. We have static analysis to provide the same sort of checks via `MOZ_RAII`
and friends.
2. clang now warns for the "temporary that should have been a declaration" case.
The extra requirements on class construction also show up during debug tests
as performance problems.
This change was automated by using the following sed script:
```
# Remove declarations in classes.
/MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER/d
/MOZ_GUARD_OBJECT_NOTIFIER_INIT/d
# Remove individual macros, carefully.
{
# We don't have to worry about substrings here because the closing
# parenthesis "anchors" the match.
s/MOZ_GUARD_OBJECT_NOTIFIER_PARAM)/)/g;
s/MOZ_GUARD_OBJECT_NOTIFIER_PARAM_TO_PARENT)/)/g;
s/MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)/)/g;
s/MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM_IN_IMPL)/)/g;
# Remove the longer identifier first.
s/MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM_TO_PARENT//g;
s/MOZ_GUARD_OBJECT_NOTIFIER_ONLY_PARAM//g;
}
# Remove the actual include.
\@# *include "mozilla/GuardObjects.h"@d
```
and running:
```
find . -name \*.cpp -o -name \*.h | grep -v 'GuardObjects.h' |xargs sed -i -f script 2>/dev/null
mach clang-format
```
Differential Revision: https://phabricator.services.mozilla.com/D85168
51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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namespace mozilla {
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/* Useful for implementing containers that assert non-reentrancy */
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class MOZ_RAII ReentrancyGuard {
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#ifdef DEBUG
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bool& mEntered;
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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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explicit ReentrancyGuard(T& aObj)
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: mEntered(aObj.mEntered)
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#else
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explicit ReentrancyGuard(T&)
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#endif
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{
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#ifdef DEBUG
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MOZ_ASSERT(!mEntered);
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mEntered = true;
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#endif
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}
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~ReentrancyGuard() {
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#ifdef DEBUG
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mEntered = false;
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#endif
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}
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private:
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ReentrancyGuard(const ReentrancyGuard&) = delete;
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void operator=(const ReentrancyGuard&) = delete;
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};
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} // namespace mozilla
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#endif /* mozilla_ReentrancyGuard_h */
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