chromium/src/third_party/blink/renderer/bindings/core/v8/v8_gc_for_context_dispose.h

/*
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#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_GC_FOR_CONTEXT_DISPOSE_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_GC_FOR_CONTEXT_DISPOSE_H_

#include "base/macros.h"
#include "base/time/time.h"
#include "third_party/blink/renderer/bindings/core/v8/window_proxy.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/timer.h"

namespace blink {

class V8GCForContextDispose {
  USING_FAST_MALLOC(V8GCForContextDispose);

 public:
  void NotifyContextDisposed(bool is_main_frame, WindowProxy::FrameReuseStatus);
  void NotifyIdle();

  CORE_EXPORT static V8GCForContextDispose& Instance();

  // Called by OomInterventionImpl. If intervention runs on the previous page,
  // it means that the memory usage is high and needs gc during navigation to
  // the next page, so that the memory usage of the two pages would not overlap.
  CORE_EXPORT void SetForcePageNavigationGC();

 private:
  V8GCForContextDispose();  // Use instance() instead.
  void PseudoIdleTimerFired(TimerBase*);
  void Reset();

  TaskRunnerTimer<V8GCForContextDispose> pseudo_idle_timer_;
  bool did_dispose_context_for_main_frame_;
  base::Time last_context_disposal_time_;
  bool force_page_navigation_gc_;

  DISALLOW_COPY_AND_ASSIGN(V8GCForContextDispose);
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_GC_FOR_CONTEXT_DISPOSE_H_