src/hotspot/share/code/codeBehaviours.hpp
author tschatzl
Thu, 24 Oct 2019 11:08:16 +0200
changeset 58777 18c246ad2ff9
parent 52384 d6dc479bcdd3
permissions -rw-r--r--
8230706: Waiting on completion of strong nmethod processing causes long pause times with G1 Summary: Instead of globally waiting for completion of strong nmethod processing during evacuation, synchronize the nmethods processing on a per-nmethod basis so that only one thread processes one nmethod at once using a state. This state indicates what work (strong/weak processing) needs to be done and what has already been done. Reviewed-by: sjohanss, kbarrett

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#ifndef SHARE_CODE_CODEBEHAVIOURS_HPP
#define SHARE_CODE_CODEBEHAVIOURS_HPP

#include "memory/allocation.hpp"

class CompiledMethod;

class CompiledICProtectionBehaviour {
  static CompiledICProtectionBehaviour* _current;

public:
  virtual bool lock(CompiledMethod* method) = 0;
  virtual void unlock(CompiledMethod* method) = 0;
  virtual bool is_safe(CompiledMethod* method) = 0;

  static CompiledICProtectionBehaviour* current() { return _current; }
  static void set_current(CompiledICProtectionBehaviour* current) { _current = current; }
};

class DefaultICProtectionBehaviour: public CompiledICProtectionBehaviour, public CHeapObj<mtInternal> {
  virtual bool lock(CompiledMethod* method);
  virtual void unlock(CompiledMethod* method);
  virtual bool is_safe(CompiledMethod* method);
};

#endif // SHARE_CODE_CODEBEHAVIOURS_HPP