src/hotspot/share/gc/shared/threadLocalAllocBuffer.hpp

rev 49650 : 8201326: Renaming ThreadLocalAllocationBuffer end to current_end
Summary: Rename the TLAB end field to a better name
Contributed-by: jcbeyler@google.com

@@ -42,11 +42,11 @@
   friend class JVMCIVMStructs;
 private:
   HeapWord* _start;                              // address of TLAB
   HeapWord* _top;                                // address after last allocation
   HeapWord* _pf_top;                             // allocation prefetch watermark
-  HeapWord* _end;                                // allocation end (excluding alignment_reserve)
+  HeapWord* _current_end;                        // allocation end (excluding alignment_reserve)
   size_t    _desired_size;                       // desired size   (including alignment_reserve)
   size_t    _refill_waste_limit;                 // hold onto tlab if free() is larger than this
   size_t    _allocated_before_last_gc;           // total bytes allocated up until the last gc
 
   static size_t   _max_size;                          // maximum size of any TLAB

@@ -63,30 +63,30 @@
 
   void accumulate_statistics();
   void initialize_statistics();
 
   void set_start(HeapWord* start)                { _start = start; }
-  void set_end(HeapWord* end)                    { _end = end; }
+  void set_current_end(HeapWord* current_end)    { _current_end = current_end; }
   void set_top(HeapWord* top)                    { _top = top; }
   void set_pf_top(HeapWord* pf_top)              { _pf_top = pf_top; }
   void set_desired_size(size_t desired_size)     { _desired_size = desired_size; }
   void set_refill_waste_limit(size_t waste)      { _refill_waste_limit = waste;  }
 
   size_t initial_refill_waste_limit()            { return desired_size() / TLABRefillWasteFraction; }
 
   static int    target_refills()                 { return _target_refills; }
   size_t initial_desired_size();
 
-  size_t remaining() const                       { return end() == NULL ? 0 : pointer_delta(hard_end(), top()); }
+  size_t remaining() const                       { return current_end() == NULL ? 0 : pointer_delta(reserved_end(), top()); }
 
   // Make parsable and release it.
   void reset();
 
   // Resize based on amount of allocation, etc.
   void resize();
 
-  void invariants() const { assert(top() >= start() && top() <= end(), "invalid tlab"); }
+  void invariants() const { assert(top() >= start() && top() <= current_end(), "invalid tlab"); }
 
   void initialize(HeapWord* start, HeapWord* top, HeapWord* end);
 
   void print_stats(const char* tag);
 

@@ -112,18 +112,18 @@
   static size_t max_size()                       { assert(_max_size != 0, "max_size not set up"); return _max_size; }
   static size_t max_size_in_bytes()              { return max_size() * BytesPerWord; }
   static void set_max_size(size_t max_size)      { _max_size = max_size; }
 
   HeapWord* start() const                        { return _start; }
-  HeapWord* end() const                          { return _end; }
-  HeapWord* hard_end() const                     { return _end + alignment_reserve(); }
+  HeapWord* current_end() const                  { return _current_end; }
+  HeapWord* reserved_end() const                 { return _current_end + alignment_reserve(); }
   HeapWord* top() const                          { return _top; }
   HeapWord* pf_top() const                       { return _pf_top; }
   size_t desired_size() const                    { return _desired_size; }
   size_t used() const                            { return pointer_delta(top(), start()); }
   size_t used_bytes() const                      { return pointer_delta(top(), start(), 1); }
-  size_t free() const                            { return pointer_delta(end(), top()); }
+  size_t free() const                            { return pointer_delta(current_end(), top()); }
   // Don't discard tlab if remaining space is larger than this.
   size_t refill_waste_limit() const              { return _refill_waste_limit; }
 
   // Allocate size HeapWords. The memory is NOT initialized to zero.
   inline HeapWord* allocate(size_t size);

@@ -164,11 +164,11 @@
 
   static size_t refill_waste_limit_increment()   { return TLABWasteIncrement; }
 
   // Code generation support
   static ByteSize start_offset()                 { return byte_offset_of(ThreadLocalAllocBuffer, _start); }
-  static ByteSize end_offset()                   { return byte_offset_of(ThreadLocalAllocBuffer, _end  ); }
+  static ByteSize current_end_offset()           { return byte_offset_of(ThreadLocalAllocBuffer, _current_end); }
   static ByteSize top_offset()                   { return byte_offset_of(ThreadLocalAllocBuffer, _top  ); }
   static ByteSize pf_top_offset()                { return byte_offset_of(ThreadLocalAllocBuffer, _pf_top  ); }
   static ByteSize size_offset()                  { return byte_offset_of(ThreadLocalAllocBuffer, _desired_size ); }
   static ByteSize refill_waste_limit_offset()    { return byte_offset_of(ThreadLocalAllocBuffer, _refill_waste_limit ); }