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52 lines
1.4 KiB
C++
52 lines
1.4 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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#ifndef mozilla_AutoTimelineMarker_h_
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#define mozilla_AutoTimelineMarker_h_
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#include "mozilla/GuardObjects.h"
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#include "mozilla/RefPtr.h"
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class nsIDocShell;
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namespace mozilla {
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// # AutoTimelineMarker
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//
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// An RAII class to trace some task in the platform by adding a start and end
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// timeline marker pair. These markers are then rendered in the devtools'
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// performance tool's waterfall graph.
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//
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// Example usage:
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//
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// {
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// AutoTimelineMarker marker(mDocShell, "Parse CSS");
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// nsresult rv = ParseTheCSSFile(mFile);
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// ...
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// }
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class MOZ_RAII AutoTimelineMarker
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{
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER;
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// The name of the marker we are adding.
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const char* mName;
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// The docshell that is associated with this marker.
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RefPtr<nsIDocShell> mDocShell;
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public:
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explicit AutoTimelineMarker(nsIDocShell* aDocShell, const char* aName
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MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
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~AutoTimelineMarker();
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AutoTimelineMarker(const AutoTimelineMarker& aOther) = delete;
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void operator=(const AutoTimelineMarker& aOther) = delete;
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};
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} // namespace mozilla
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#endif /* mozilla_AutoTimelineMarker_h_ */
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