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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_PROCESS_MEMORY_TOTALS_H_
#define BASE_TRACE_EVENT_PROCESS_MEMORY_TOTALS_H_
#include <stdint.h>
#include <map>
#include "base/base_export.h"
#include "base/macros.h"
namespace base {
namespace trace_event {
class TracedValue;
// Data model for process-wide memory stats.
class BASE_EXPORT ProcessMemoryTotals {
public:
ProcessMemoryTotals();
~ProcessMemoryTotals();
// Called at trace generation time to populate the TracedValue.
void AsValueInto(TracedValue* value) const;
// Clears up all the data collected.
void Clear();
uint64_t resident_set_bytes() const { return resident_set_bytes_; }
void set_resident_set_bytes(uint64_t value) { resident_set_bytes_ = value; }
uint64_t peak_resident_set_bytes() const { return peak_resident_set_bytes_; }
void set_peak_resident_set_bytes(uint64_t value) {
peak_resident_set_bytes_ = value;
}
// On some platforms (recent linux kernels, see goo.gl/sMvAVz) the peak rss
// can be reset. When is_peak_rss_resettable == true, the peak refers to
// peak from the previous measurement. When false, it is the absolute peak
// since the start of the process.
bool is_peak_rss_resetable() const { return is_peak_rss_resetable_; }
void set_is_peak_rss_resetable(bool value) { is_peak_rss_resetable_ = value; }
void SetExtraFieldInBytes(const char* name, uint64_t value);
private:
uint64_t resident_set_bytes_;
uint64_t peak_resident_set_bytes_;
bool is_peak_rss_resetable_;
// Extra metrics for OS-specific statistics.
std::map<const char*, uint64_t> extra_fields_;
DISALLOW_COPY_AND_ASSIGN(ProcessMemoryTotals);
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_PROCESS_MEMORY_TOTALS_H_
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