src/share/vm/gc/shared/threadLocalAllocBuffer.cpp

rev 13139 : [mq]: heap7
rev 13140 : [mq]: heapz8

*** 125,135 ****
        set_actual_end(NULL);
        set_slow_path_end(NULL);
      }
    }
    assert(!(retire || ZeroTLAB)  ||
!          (start() == NULL && end() == NULL && top() == NULL),
           "TLAB must be reset");
  }
  
  void ThreadLocalAllocBuffer::resize_all_tlabs() {
    if (ResizeTLAB) {
--- 125,136 ----
        set_actual_end(NULL);
        set_slow_path_end(NULL);
      }
    }
    assert(!(retire || ZeroTLAB)  ||
!          (start() == NULL && end() == NULL && top() == NULL &&
!           actual_end() == NULL && slow_path_end() == NULL),
           "TLAB must be reset");
  }
  
  void ThreadLocalAllocBuffer::resize_all_tlabs() {
    if (ResizeTLAB) {
*** 325,340 ****
    size_t heap_words_remaining = _end - _top;
    size_t bytes_left = bytes_until_sample();
    size_t words_until_sample = bytes_left / HeapWordSize;
  
    if (heap_words_remaining > words_until_sample) {
!     set_end(_top + words_until_sample);
      set_bytes_until_sample(0);
    } else {
      bytes_left -= heap_words_remaining * HeapWordSize;
      set_bytes_until_sample(bytes_left);
    }
  }
  
  Thread* ThreadLocalAllocBuffer::myThread() {
    return (Thread*)(((char *)this) +
                     in_bytes(start_offset()) -
--- 326,349 ----
    size_t heap_words_remaining = _end - _top;
    size_t bytes_left = bytes_until_sample();
    size_t words_until_sample = bytes_left / HeapWordSize;
  
    if (heap_words_remaining > words_until_sample) {
!     HeapWord* new_end = _top + words_until_sample;
!     set_end(new_end);
!     set_slow_path_end(new_end);
      set_bytes_until_sample(0);
    } else {
      bytes_left -= heap_words_remaining * HeapWordSize;
      set_bytes_until_sample(bytes_left);
    }
+ 
+   log_trace(gc, tlab)("TLAB picked next sample: thread: " INTPTR_FORMAT " [id: %2d]"
+                       " start: %p  top: %p end: %p actual_end: %p slow_path_end: %p",
+                       p2i(myThread()), myThread()->osthread()->thread_id(),
+                       start(), top(), end(),
+                       actual_end(), slow_path_end());
  }
  
  Thread* ThreadLocalAllocBuffer::myThread() {
    return (Thread*)(((char *)this) +
                     in_bytes(start_offset()) -