content/public/browser/background_tracing_preemptive_config.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_PUBLIC_BROWSER_BACKGROUND_TRACING_PREEMPTIVE_CONFIG_H_
   6 #define CONTENT_PUBLIC_BROWSER_BACKGROUND_TRACING_PREEMPTIVE_CONFIG_H_
   7
   8 #include "base/metrics/histogram_base.h"
   9 #include "content/public/browser/background_tracing_config.h"
  10
  11 namespace content {
  12
  13 // BackgroundTracingPreemptiveConfig holds trigger rules for use during
  14 // preemptive tracing. Tracing will be enabled immediately, and whenever
  15 // a trigger occurs, the trace will be finalized.
  16 struct CONTENT_EXPORT BackgroundTracingPreemptiveConfig
  17     : public BackgroundTracingConfig {
  18  public:
  19   BackgroundTracingPreemptiveConfig();
  20   ~BackgroundTracingPreemptiveConfig() override;
  21
  22   enum RuleType {
  23     MONITOR_AND_DUMP_WHEN_TRIGGER_NAMED,
  24     MONITOR_AND_DUMP_WHEN_SPECIFIC_HISTOGRAM_AND_VALUE,
  25     MONITOR_AND_DUMP_WHEN_BROWSER_STARTUP_COMPLETE,
  26   };
  27   struct HistogramTriggerInfo {
  28     std::string histogram_name;
  29     base::HistogramBase::Sample histogram_value;
  30   };
  31   struct NamedTriggerInfo {
  32     std::string trigger_name;
  33   };
  34   struct MonitoringRule {
  35     RuleType type;
  36     HistogramTriggerInfo histogram_trigger_info;
  37     NamedTriggerInfo named_trigger_info;
  38   };
  39
  40   std::vector<MonitoringRule> configs;
  41   CategoryPreset category_preset;
  42 };
  43
  44 }  // namespace content
  45
  46 #endif  // CONTENT_PUBLIC_BROWSER_BACKGROUND_TRACING_PREEMPTIVE_CONFIG_H_