171   // re-instate it at the beginning of the next GC.)

   171   // re-instate it at the beginning of the next GC.)

   172   void set(HeapRegion* alloc_region);

   172   void set(HeapRegion* alloc_region);

   173 

   173 

   174   // Should be called when we want to release the active region which

   174   // Should be called when we want to release the active region which

   175   // is returned after it's been retired.

   175   // is returned after it's been retired.

   177 

   177 

   178 #if G1_ALLOC_REGION_TRACING

   178 #if G1_ALLOC_REGION_TRACING

   179   void trace(const char* str, size_t word_size = 0, HeapWord* result = NULL);

   179   void trace(const char* str, size_t word_size = 0, HeapWord* result = NULL);

   180 #else // G1_ALLOC_REGION_TRACING

   180 #else // G1_ALLOC_REGION_TRACING

   181   void trace(const char* str, size_t word_size = 0, HeapWord* result = NULL) { }

   181   void trace(const char* str, size_t word_size = 0, HeapWord* result = NULL) { }