content/browser/tracing/background_tracing_rule.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_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_
   6 #define CONTENT_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_
   7
   8 #include "content/browser/tracing/background_tracing_config_impl.h"
   9 #include "content/common/content_export.h"
  10
  11 namespace base {
  12 class DictionaryValue;
  13 }  // namespace base
  14
  15 namespace content {
  16
  17 class CONTENT_EXPORT BackgroundTracingRule {
  18  public:
  19   BackgroundTracingRule();
  20   virtual ~BackgroundTracingRule();
  21
  22   virtual void Install() {}
  23   virtual void IntoDict(base::DictionaryValue* dict) const = 0;
  24   virtual bool ShouldTriggerNamedEvent(const std::string& named_event) const;
  25   virtual BackgroundTracingConfigImpl::CategoryPreset GetCategoryPreset() const;
  26   virtual void OnHistogramTrigger(const std::string& histogram_name) const {}
  27
  28   virtual int GetReactiveTimeout() const;
  29
  30   static scoped_ptr<BackgroundTracingRule> PreemptiveRuleFromDict(
  31       const base::DictionaryValue* dict);
  32
  33   static scoped_ptr<BackgroundTracingRule> ReactiveRuleFromDict(
  34       const base::DictionaryValue* dict,
  35       BackgroundTracingConfigImpl::CategoryPreset category_preset);
  36
  37  private:
  38   DISALLOW_COPY_AND_ASSIGN(BackgroundTracingRule);
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_