src/hotspot/share/gc/z/zPageAllocator.cpp

*** 240,254 ****
    detach_memory(_pre_mapped.virtual_memory(), _pre_mapped.physical_memory());
  
    _pre_mapped.clear();
  }
  
- void ZPageAllocator::map_page(ZPage* page) {
-   // Map physical memory
-   _physical.map(page->physical_memory(), page->start());
- }
- 
  void ZPageAllocator::detach_page(ZPage* page) {
    // Detach the memory mapping.
    detach_memory(page->virtual_memory(), page->physical_memory());
  
    // Add to list of detached pages
--- 240,249 ----
*** 265,274 ****
--- 260,284 ----
    }
  
    delete page;
  }
  
+ void ZPageAllocator::map_page(ZPage* page) {
+   // Map physical memory
+   if (!page->is_mapped()) {
+     _physical.map(page->physical_memory(), page->start());
+   } else if (ZVerifyViews) {
+     _physical.debug_map(page->physical_memory(), page->start());
+   }
+ }
+ 
+ void ZPageAllocator::unmap_all_pages() {
+   ZPhysicalMemory pmem(ZPhysicalMemorySegment(0 /* start */, ZAddressOffsetMax));
+   _physical.debug_unmap(pmem, 0 /* offset */);
+   pmem.clear();
+ }
+ 
  void ZPageAllocator::flush_detached_pages(ZList<ZPage>* list) {
    ZLocker<ZLock> locker(&_lock);
    list->transfer(&_detached);
  }
  
*** 396,408 ****
      // Out of memory
      return NULL;
    }
  
    // Map page if needed
!   if (!page->is_mapped()) {
!     map_page(page);
!   }
  
    // Reset page. This updates the page's sequence number and must
    // be done after page allocation, which potentially blocked in
    // a safepoint where the global sequence number was updated.
    page->reset();
--- 406,416 ----
      // Out of memory
      return NULL;
    }
  
    // Map page if needed
!   map_page(page);
  
    // Reset page. This updates the page's sequence number and must
    // be done after page allocation, which potentially blocked in
    // a safepoint where the global sequence number was updated.
    page->reset();
*** 453,483 ****
  
    // Clear physical mapping
    pmem.clear();
  }
  
- void ZPageAllocator::flip_page(ZPage* page) {
-   const ZPhysicalMemory& pmem = page->physical_memory();
-   const uintptr_t addr = page->start();
- 
-   // Flip physical mapping
-   _physical.flip(pmem, addr);
- }
- 
- void ZPageAllocator::flip_pre_mapped() {
-   if (_pre_mapped.available() == 0) {
-     // Nothing to flip
-     return;
-   }
- 
-   const ZPhysicalMemory& pmem = _pre_mapped.physical_memory();
-   const ZVirtualMemory& vmem = _pre_mapped.virtual_memory();
- 
-   // Flip physical mapping
-   _physical.flip(pmem, vmem.start());
- }
- 
  void ZPageAllocator::free_page(ZPage* page, bool reclaimed) {
    ZLocker<ZLock> locker(&_lock);
  
    // Update used statistics
    decrease_used(page->size(), reclaimed);
--- 461,470 ----