Index: base/trace_event/heap_profiler_event_filter.h |
diff --git a/base/trace_event/heap_profiler_event_filter.h b/base/trace_event/heap_profiler_event_filter.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..47368a1b0702da38c03a871017bf818b6c1bf93f |
--- /dev/null |
+++ b/base/trace_event/heap_profiler_event_filter.h |
@@ -0,0 +1,40 @@ |
+// 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_ |