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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 <memory>
#include "base/base_export.h"
#include "base/trace_event/heap_profiler_stack_frame_deduplicator.h"
#include "base/trace_event/heap_profiler_type_name_deduplicator.h"
#include "base/trace_event/trace_config.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();
// Returns the stack frame deduplicator that should be used by memory dump
// providers when doing a heap dump.
StackFrameDeduplicator* stack_frame_deduplicator() const {
return stack_frame_deduplicator_.get();
}
void SetStackFrameDeduplicator(
std::unique_ptr<StackFrameDeduplicator> stack_frame_deduplicator);
// Returns the type name deduplicator that should be used by memory dump
// providers when doing a heap dump.
TypeNameDeduplicator* type_name_deduplicator() const {
return type_name_deduplicator_.get();
}
void SetTypeNameDeduplicator(
std::unique_ptr<TypeNameDeduplicator> type_name_deduplicator);
const TraceConfig::MemoryDumpConfig& memory_dump_config() const {
return memory_dump_config_;
}
void SetMemoryDumpConfig(const TraceConfig::MemoryDumpConfig& config);
bool is_polling_enabled() { return is_polling_enabled_; }
private:
friend class RefCountedThreadSafe<MemoryDumpSessionState>;
~MemoryDumpSessionState();
// Deduplicates backtraces in heap dumps so they can be written once when the
// trace is finalized.
std::unique_ptr<StackFrameDeduplicator> stack_frame_deduplicator_;
// Deduplicates type names in heap dumps so they can be written once when the
// trace is finalized.
std::unique_ptr<TypeNameDeduplicator> type_name_deduplicator_;
// The memory dump config, copied at the time when the tracing session was
// started.
TraceConfig::MemoryDumpConfig memory_dump_config_;
// True if memory polling is enabled by the config in the tracing session.
bool is_polling_enabled_;
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_MEMORY_DUMP_SESSION_STATE_H_
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