web_memory_stress_tester.h 1.6 KB

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  1. // Copyright 2021 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. #ifndef COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_STRESS_TESTER_H_
  5. #define COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_STRESS_TESTER_H_
  6. #include "components/performance_manager/public/graph/graph.h"
  7. #include "components/performance_manager/public/graph/page_node.h"
  8. namespace performance_manager {
  9. namespace v8_memory {
  10. // Observer that calls WebMeasureMemory randomly after a page load, and
  11. // discards the results, to check for crashes. This is controlled by an
  12. // experiment that will only be enabled for some Canary users.
  13. class WebMeasureMemoryStressTester : public PageNode::ObserverDefaultImpl,
  14. public GraphOwned {
  15. public:
  16. static bool FeatureIsEnabled();
  17. WebMeasureMemoryStressTester() = default;
  18. ~WebMeasureMemoryStressTester() override = default;
  19. WebMeasureMemoryStressTester(const WebMeasureMemoryStressTester& other) =
  20. delete;
  21. WebMeasureMemoryStressTester& operator=(
  22. const WebMeasureMemoryStressTester& other) = delete;
  23. // PageNode::ObserverDefaultImpl
  24. void OnLoadingStateChanged(const PageNode* page_node,
  25. PageNode::LoadingState previous_state) override;
  26. // GraphOwned
  27. void OnPassedToGraph(Graph* graph) override;
  28. void OnTakenFromGraph(Graph* graph) override;
  29. };
  30. } // namespace v8_memory
  31. } // namespace performance_manager
  32. #endif // COMPONENTS_PERFORMANCE_MANAGER_V8_MEMORY_WEB_MEMORY_STRESS_TESTER_H_