chromium/chrome/browser/metrics/process_memory_metrics_emitter.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_METRICS_PROCESS_MEMORY_METRICS_EMITTER_H_
#define CHROME_BROWSER_METRICS_PROCESS_MEMORY_METRICS_EMITTER_H_

#include <memory>
#include <optional>
#include <vector>

#include "base/containers/flat_map.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/process/process_handle.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "services/resource_coordinator/public/cpp/memory_instrumentation/global_memory_dump.h"

namespace ukm {
class UkmRecorder;
}

namespace performance_manager {
class Graph;
}

// This class asynchronously fetches memory metrics for each process, and then
// emits UMA metrics from those metrics.
// Each instance is self-owned, and will delete itself once it has finished
// emitting metrics.
// This class is an analog to MetricsMemoryDetails, but uses the resource
// coordinator service to fetch data, rather than doing all the processing
// manually.
class ProcessMemoryMetricsEmitter
    : public base::RefCountedThreadSafe<ProcessMemoryMetricsEmitter> { … };

// A |PageInfo| describes some metrics about a particular page with respect to
// a given process.
struct ProcessMemoryMetricsEmitter::PageInfo { … };

struct ProcessMemoryMetricsEmitter::ProcessInfo { … };

#endif  // CHROME_BROWSER_METRICS_PROCESS_MEMORY_METRICS_EMITTER_H_