| // 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 CONTENT_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_ |
| #define CONTENT_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_ |
| |
| #include "base/macros.h" |
| #include "content/browser/tracing/background_tracing_config_impl.h" |
| #include "content/common/content_export.h" |
| |
| namespace base { |
| class DictionaryValue; |
| } // namespace base |
| |
| namespace content { |
| |
| class CONTENT_EXPORT BackgroundTracingRule { |
| public: |
| BackgroundTracingRule(); |
| virtual ~BackgroundTracingRule(); |
| |
| virtual void Install() {} |
| virtual void IntoDict(base::DictionaryValue* dict) const; |
| void Setup(const base::DictionaryValue* dict); |
| virtual bool ShouldTriggerNamedEvent(const std::string& named_event) const; |
| virtual BackgroundTracingConfigImpl::CategoryPreset GetCategoryPreset() const; |
| virtual void OnHistogramTrigger(const std::string& histogram_name) const {} |
| |
| // Seconds from the rule is triggered to finalization should start. |
| virtual int GetTraceTimeout() const; |
| |
| // Probability that we should allow a tigger to happen. |
| double trigger_chance() const { return trigger_chance_; } |
| |
| static scoped_ptr<BackgroundTracingRule> PreemptiveRuleFromDict( |
| const base::DictionaryValue* dict); |
| |
| static scoped_ptr<BackgroundTracingRule> ReactiveRuleFromDict( |
| const base::DictionaryValue* dict, |
| BackgroundTracingConfigImpl::CategoryPreset category_preset); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(BackgroundTracingRule); |
| |
| double trigger_chance_; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_TRACING_BACKGROUND_TRACING_RULE_H_ |