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heap_profiler_serialization_state.h
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heap_profiler_serialization_state.h
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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_HEAP_PROFILER_SERIALIZATION_STATE_H_
#define BASE_TRACE_EVENT_HEAP_PROFILER_SERIALIZATION_STATE_H_
#include <memory>
#include <set>
#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/memory_dump_request_args.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 HeapProfilerSerializationState
: public RefCountedThreadSafe<HeapProfilerSerializationState> {
public:
HeapProfilerSerializationState();
// 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);
void SetAllowedDumpModes(
std::set<MemoryDumpLevelOfDetail> allowed_dump_modes);
bool IsDumpModeAllowed(MemoryDumpLevelOfDetail dump_mode) const;
void set_heap_profiler_breakdown_threshold_bytes(uint32_t value) {
heap_profiler_breakdown_threshold_bytes_ = value;
}
uint32_t heap_profiler_breakdown_threshold_bytes() const {
return heap_profiler_breakdown_threshold_bytes_;
}
bool is_initialized() const {
return stack_frame_deduplicator_ && type_name_deduplicator_ &&
heap_profiler_breakdown_threshold_bytes_;
}
private:
friend class RefCountedThreadSafe<HeapProfilerSerializationState>;
~HeapProfilerSerializationState();
// 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_;
uint32_t heap_profiler_breakdown_threshold_bytes_;
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_HEAP_PROFILER_SERIALIZATION_STATE_H