зеркало из https://github.com/mozilla/gecko-dev.git
76 строки
2.3 KiB
C++
76 строки
2.3 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_QUOTA_SCOPEDLOGEXTRAINFO_H_
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#define DOM_QUOTA_SCOPEDLOGEXTRAINFO_H_
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#include "mozilla/dom/quota/Config.h"
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#include <map>
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/ThreadLocal.h"
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#include "nsString.h"
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#include "nsXULAppAPI.h"
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namespace mozilla::dom::quota {
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struct MOZ_STACK_CLASS ScopedLogExtraInfo {
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static constexpr const char kTagQuery[] = "query";
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static constexpr const char kTagContext[] = "context";
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#ifdef QM_SCOPED_LOG_EXTRA_INFO_ENABLED
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private:
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static auto FindSlot(const char* aTag);
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public:
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template <size_t N>
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ScopedLogExtraInfo(const char (&aTag)[N], const nsACString& aExtraInfo)
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: mTag{aTag}, mCurrentValue{aExtraInfo} {
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// Initialize is currently only called in the parent process, we could call
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// it directly from nsLayoutStatics::Initialize in the content process to
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// allow use of ScopedLogExtraInfo in that too. The check in GetExtraInfoMap
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// must be removed then.
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MOZ_ASSERT(XRE_IsParentProcess());
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AddInfo();
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}
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~ScopedLogExtraInfo();
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ScopedLogExtraInfo(ScopedLogExtraInfo&& aOther);
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ScopedLogExtraInfo& operator=(ScopedLogExtraInfo&& aOther) = delete;
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ScopedLogExtraInfo(const ScopedLogExtraInfo&) = delete;
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ScopedLogExtraInfo& operator=(const ScopedLogExtraInfo&) = delete;
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using ScopedLogExtraInfoMap = std::map<const char*, const nsACString*>;
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static ScopedLogExtraInfoMap GetExtraInfoMap();
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static void Initialize();
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private:
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const char* mTag;
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const nsACString* mPreviousValue;
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nsCString mCurrentValue;
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static MOZ_THREAD_LOCAL(const nsACString*) sQueryValue;
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static MOZ_THREAD_LOCAL(const nsACString*) sContextValue;
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void AddInfo();
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#else
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template <size_t N>
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ScopedLogExtraInfo(const char (&aTag)[N], const nsACString& aExtraInfo) {}
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// user-defined to silence unused variable warnings
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~ScopedLogExtraInfo() {}
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#endif
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};
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} // namespace mozilla::dom::quota
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#endif // DOM_QUOTA_SCOPEDLOGEXTRAINFO_H_
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