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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TRACE_EVENT_HEAP_PROFILER_EVENT_FILTER_H_
#define BASE_TRACE_EVENT_HEAP_PROFILER_EVENT_FILTER_H_
#include "base/base_export.h"
#include "base/macros.h"
#include "base/trace_event/trace_event_filter.h"
namespace base {
namespace trace_event {
class TraceEvent;
// This filter unconditionally accepts all events and pushes/pops them from the
// thread-local AllocationContextTracker instance as they are seen.
// This is used to cheaply construct the heap profiler pseudo stack without
// having to actually record all events.
class BASE_EXPORT HeapProfilerEventFilter : public TraceEventFilter {
public:
static const char kName[];
HeapProfilerEventFilter();
~HeapProfilerEventFilter() override;
// TraceEventFilter implementation.
bool FilterTraceEvent(const TraceEvent& trace_event) const override;
void EndEvent(const char* category_name,
const char* event_name) const override;
private:
DISALLOW_COPY_AND_ASSIGN(HeapProfilerEventFilter);
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_HEAP_PROFILER_EVENT_FILTER_H_