eb678fcc1f
Kept it on SkDebugfTracer, which seemed to parse as "SkDebugf, Tracer". Change-Id: I3e43fe101798ca5ffe14324e3c29f2dd41a6bd0f Reviewed-on: https://skia-review.googlesource.com/c/skia/+/202317 Commit-Queue: Mike Klein <mtklein@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef ChromeTracingTracer_DEFINED
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#define ChromeTracingTracer_DEFINED
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#include "EventTracingPriv.h"
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#include "SkEventTracer.h"
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#include "SkSpinlock.h"
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#include "SkString.h"
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#include "SkTHash.h"
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class SkJSONWriter;
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/**
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* A SkEventTracer implementation that logs events to JSON for viewing with chrome://tracing.
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*/
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class ChromeTracingTracer : public SkEventTracer {
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public:
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ChromeTracingTracer(const char* filename);
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~ChromeTracingTracer() override;
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SkEventTracer::Handle addTraceEvent(char phase,
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const uint8_t* categoryEnabledFlag,
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const char* name,
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uint64_t id,
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int numArgs,
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const char** argNames,
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const uint8_t* argTypes,
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const uint64_t* argValues,
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uint8_t flags) override;
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void updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
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const char* name,
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SkEventTracer::Handle handle) override;
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const uint8_t* getCategoryGroupEnabled(const char* name) override {
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return fCategories.getCategoryGroupEnabled(name);
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}
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const char* getCategoryGroupName(const uint8_t* categoryEnabledFlag) override {
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return fCategories.getCategoryGroupName(categoryEnabledFlag);
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}
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private:
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void flush();
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enum {
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// Events are variable size, but most commonly 48 bytes, assuming 64-bit pointers and
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// reasonable packing. This is a first guess at a number that balances memory usage vs.
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// time overhead of allocating blocks.
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kBlockSize = 512 * 1024,
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};
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typedef std::unique_ptr<uint8_t[]> BlockPtr;
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struct TraceEventBlock {
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BlockPtr fBlock;
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int fEventsInBlock;
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};
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void createBlock();
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Handle appendEvent(const void* data, size_t size);
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SkString fFilename;
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SkSpinlock fMutex;
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SkEventTracingCategories fCategories;
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TraceEventBlock fCurBlock;
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size_t fCurBlockUsed;
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SkTArray<TraceEventBlock> fBlocks;
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};
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#endif
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