48 
  49   void copy(JavaFrameAnchor* src) {
  50     // In order to make sure the transition state is valid for "this"
  51     // We must clear _last_Java_sp before copying the rest of the new data
  52     //
  53     // Hack Alert: Temporary bugfix for 4717480/4721647
  54     // To act like previous version (pd_cache_state) don't NULL _last_Java_sp
  55     // unless the value is changing
  56     //
  57     if (_last_Java_sp != src->_last_Java_sp) {
  58       _last_Java_sp = NULL;
  59       OrderAccess::release();
  60     }
  61     _last_Java_fp = src->_last_Java_fp;
  62     _last_Java_pc = src->_last_Java_pc;
  63     // Must be last so profiler will always see valid frame if has_last_frame() is true
  64     _last_Java_sp = src->_last_Java_sp;
  65   }
  66 
  67   // Always walkable
  68   bool walkable(void) { return true; }
  69   // Never any thing to do since we are always walkable and can find address of return addresses
  70   void make_walkable(JavaThread* thread) { }
  71 
  72   intptr_t* last_Java_sp(void) const             { return _last_Java_sp; }
  73 
  74   address last_Java_pc(void)                     { return _last_Java_pc; }
  75 
  76 private:
  77 
  78   static ByteSize last_Java_fp_offset()          { return byte_offset_of(JavaFrameAnchor, _last_Java_fp); }
  79 
  80 public:
  81 
  82   void set_last_Java_sp(intptr_t* sp)            { _last_Java_sp = sp; OrderAccess::release(); }
  83 
  84   intptr_t*   last_Java_fp(void)                     { return _last_Java_fp; }
  85   // Assert (last_Java_sp == NULL || fp == NULL)
  86   void set_last_Java_fp(intptr_t* fp)                { OrderAccess::release(); _last_Java_fp = fp; }
  87 
  88 #endif // CPU_AARCH64_VM_JAVAFRAMEANCHOR_AARCH64_HPP

  48 
  49   void copy(JavaFrameAnchor* src) {
  50     // In order to make sure the transition state is valid for "this"
  51     // We must clear _last_Java_sp before copying the rest of the new data
  52     //
  53     // Hack Alert: Temporary bugfix for 4717480/4721647
  54     // To act like previous version (pd_cache_state) don't NULL _last_Java_sp
  55     // unless the value is changing
  56     //
  57     if (_last_Java_sp != src->_last_Java_sp) {
  58       _last_Java_sp = NULL;
  59       OrderAccess::release();
  60     }
  61     _last_Java_fp = src->_last_Java_fp;
  62     _last_Java_pc = src->_last_Java_pc;
  63     // Must be last so profiler will always see valid frame if has_last_frame() is true
  64     _last_Java_sp = src->_last_Java_sp;
  65   }
  66 
  67   // Always walkable
  68   bool walkable(void)                            { return _last_Java_sp != NULL && _last_Java_pc != NULL; }
  69   void make_walkable(JavaThread* thread);
  70   void capture_last_Java_pc(void);
  71 
  72   intptr_t* last_Java_sp(void) const             { return _last_Java_sp; }
  73 
  74   address last_Java_pc(void)                     { return _last_Java_pc; }
  75 
  76 private:
  77 
  78   static ByteSize last_Java_fp_offset()          { return byte_offset_of(JavaFrameAnchor, _last_Java_fp); }
  79 
  80 public:
  81 
  82   void set_last_Java_sp(intptr_t* sp)            { _last_Java_sp = sp; OrderAccess::release(); }
  83 
  84   intptr_t*   last_Java_fp(void)                     { return _last_Java_fp; }
  85   // Assert (last_Java_sp == NULL || fp == NULL)
  86   void set_last_Java_fp(intptr_t* fp)                { OrderAccess::release(); _last_Java_fp = fp; }
  87 
  88 #endif // CPU_AARCH64_VM_JAVAFRAMEANCHOR_AARCH64_HPP