62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/* -*- 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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#ifndef MOZ_PROFILE_BUFFER_H
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#define MOZ_PROFILE_BUFFER_H
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#include "ProfileEntry.h"
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#include "platform.h"
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#include "ProfileJSONWriter.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/RefCounted.h"
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class ProfileBuffer : public mozilla::RefCounted<ProfileBuffer> {
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public:
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ProfileBuffer)
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explicit ProfileBuffer(int aEntrySize);
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virtual ~ProfileBuffer();
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void addTag(const ProfileEntry& aTag);
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void StreamSamplesToJSON(SpliceableJSONWriter& aWriter, int aThreadId, double aSinceTime,
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JSRuntime* rt, UniqueStacks& aUniqueStacks);
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void StreamMarkersToJSON(SpliceableJSONWriter& aWriter, int aThreadId, double aSinceTime,
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UniqueStacks& aUniqueStacks);
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void DuplicateLastSample(int aThreadId);
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void addStoredMarker(ProfilerMarker* aStoredMarker);
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// The following two methods are not signal safe! They delete markers.
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void deleteExpiredStoredMarkers();
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void reset();
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protected:
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char* processDynamicTag(int readPos, int* tagsConsumed, char* tagBuff);
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int FindLastSampleOfThread(int aThreadId);
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public:
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// Circular buffer 'Keep One Slot Open' implementation for simplicity
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mozilla::UniquePtr<ProfileEntry[]> mEntries;
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// Points to the next entry we will write to, which is also the one at which
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// we need to stop reading.
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int mWritePos;
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// Points to the entry at which we can start reading.
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int mReadPos;
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// The number of entries in our buffer.
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int mEntrySize;
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// How many times mWritePos has wrapped around.
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uint32_t mGeneration;
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// Markers that marker entries in the buffer might refer to.
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ProfilerMarkerLinkedList mStoredMarkers;
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};
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#endif
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