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