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// Copyright 2015 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_MEMORY_DUMP_SESSION_STATE_H_
#define BASE_TRACE_EVENT_MEMORY_DUMP_SESSION_STATE_H_
#include "base/base_export.h"
#include "base/memory/ref_counted.h"
#include "base/trace_event/heap_profiler_stack_frame_deduplicator.h"
#include "base/trace_event/heap_profiler_type_name_deduplicator.h"
namespace base {
namespace trace_event {
// Container for state variables that should be shared across all the memory
// dumps in a tracing session.
class BASE_EXPORT MemoryDumpSessionState
: public RefCountedThreadSafe<MemoryDumpSessionState> {
public:
MemoryDumpSessionState(
const scoped_refptr<StackFrameDeduplicator>& stack_frame_deduplicator,
const scoped_refptr<TypeNameDeduplicator>& type_name_deduplicator);
// Returns the stack frame deduplicator that should be used by memory dump
// providers when doing a heap dump.
StackFrameDeduplicator* stack_frame_deduplicator() {
return stack_frame_deduplicator_.get();
}
// Returns the type name deduplicator that should be used by memory dump
// providers when doing a heap dump.
TypeNameDeduplicator* type_name_deduplicator() {
return type_name_deduplicator_.get();
}
private:
friend class RefCountedThreadSafe<MemoryDumpSessionState>;
~MemoryDumpSessionState();
// Deduplicates backtraces in heap dumps so they can be written once when the
// trace is finalized.
scoped_refptr<StackFrameDeduplicator> stack_frame_deduplicator_;
// Deduplicates type names in heap dumps so they can be written once when the
// trace is finalized.
scoped_refptr<TypeNameDeduplicator> type_name_deduplicator_;
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_MEMORY_DUMP_SESSION_STATE_H_
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