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

rev 47590 : [mq]: heap8
rev 47591 : [mq]: heap10a
rev 47592 : [mq]: heap14_rebased

*** 144,155 ****
    // Allocate from the current thread's TLAB, with broken-out slow path.
    inline static HeapWord* allocate_from_tlab(Klass* klass, Thread* thread, size_t size);
    static HeapWord* allocate_from_tlab_slow(Klass* klass, Thread* thread, size_t size);
  
    // Sample the allocation via HeapMonitoring.
    static void sample_allocation(Thread* thread, HeapWord* obj, size_t size,
!                                 size_t fix_sample_rate = 0);
    // Try to allocate the object we want to sample in this tlab, returns NULL if
    // fails to allocate.
    static HeapWord* allocate_sampled_object(Thread* thread, size_t size);
  
    // Allocate an uninitialized block of the given size, or returns NULL if
--- 144,157 ----
    // Allocate from the current thread's TLAB, with broken-out slow path.
    inline static HeapWord* allocate_from_tlab(Klass* klass, Thread* thread, size_t size);
    static HeapWord* allocate_from_tlab_slow(Klass* klass, Thread* thread, size_t size);
  
    // Sample the allocation via HeapMonitoring.
+   // overflowed_words represents the number of HeapWords that went passed the
+   // sampling boundary. This is used to fix the next sampling rate.
    static void sample_allocation(Thread* thread, HeapWord* obj, size_t size,
!                                 size_t overflowed_words = 0);
    // Try to allocate the object we want to sample in this tlab, returns NULL if
    // fails to allocate.
    static HeapWord* allocate_sampled_object(Thread* thread, size_t size);
  
    // Allocate an uninitialized block of the given size, or returns NULL if