src/hotspot/share/gc/z/zHeap.hpp

*** 64,73 ****
--- 64,74 ----
    ZRelocationSet      _relocation_set;
    ZUnload             _unload;
    ZServiceability     _serviceability;
  
    size_t heap_min_size() const;
+   size_t heap_initial_size() const;
    size_t heap_max_size() const;
    size_t heap_max_reserve_size() const;
  
    void before_flip();
    void after_flip();
*** 127,136 ****
--- 128,140 ----
    // Page allocation
    ZPage* alloc_page(uint8_t type, size_t size, ZAllocationFlags flags);
    void undo_alloc_page(ZPage* page);
    void free_page(ZPage* page, bool reclaimed);
  
+   // Uncommit memory
+   uint64_t uncommit(uint64_t delay);
+ 
    // Object allocation
    uintptr_t alloc_tlab(size_t size);
    uintptr_t alloc_object(size_t size);
    uintptr_t alloc_object_for_relocation(size_t size);
    void undo_alloc_object_for_relocation(uintptr_t addr, size_t size);