skia2/tools/trace/ChromeTracingTracer.h
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

80 lines
2.5 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef ChromeTracingTracer_DEFINED
#define ChromeTracingTracer_DEFINED
#include "include/core/SkString.h"
#include "include/private/SkSpinlock.h"
#include "include/private/SkTHash.h"
#include "include/utils/SkEventTracer.h"
#include "tools/trace/EventTracingPriv.h"
class SkJSONWriter;
/**
* A SkEventTracer implementation that logs events to JSON for viewing with chrome://tracing.
*/
class ChromeTracingTracer : public SkEventTracer {
public:
ChromeTracingTracer(const char* filename);
~ChromeTracingTracer() override;
SkEventTracer::Handle addTraceEvent(char phase,
const uint8_t* categoryEnabledFlag,
const char* name,
uint64_t id,
int numArgs,
const char** argNames,
const uint8_t* argTypes,
const uint64_t* argValues,
uint8_t flags) override;
void updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
const char* name,
SkEventTracer::Handle handle) override;
const uint8_t* getCategoryGroupEnabled(const char* name) override {
return fCategories.getCategoryGroupEnabled(name);
}
const char* getCategoryGroupName(const uint8_t* categoryEnabledFlag) override {
return fCategories.getCategoryGroupName(categoryEnabledFlag);
}
private:
void flush();
enum {
// Events are variable size, but most commonly 48 bytes, assuming 64-bit pointers and
// reasonable packing. This is a first guess at a number that balances memory usage vs.
// time overhead of allocating blocks.
kBlockSize = 512 * 1024,
};
typedef std::unique_ptr<uint8_t[]> BlockPtr;
struct TraceEventBlock {
BlockPtr fBlock;
int fEventsInBlock;
};
void createBlock();
Handle appendEvent(const void* data, size_t size);
SkString fFilename;
SkSpinlock fMutex;
SkEventTracingCategories fCategories;
TraceEventBlock fCurBlock;
size_t fCurBlockUsed;
SkTArray<TraceEventBlock> fBlocks;
};
#endif