src/share/vm/utilities/globalDefinitions.hpp

*** 363,382 ****
--- 363,402 ----
  // for use in places like enum definitions that require compile-time constant
  // expressions and a function for all other places so as to get type checking.
  
  #define align_size_up_(size, alignment) (((size) + ((alignment) - 1)) & ~((alignment) - 1))
  
+ inline bool is_size_aligned(size_t size, size_t alignment) {
+   return align_size_up_(size, alignment) == size;
+ }
+ 
+ inline bool is_ptr_aligned(void* ptr, size_t alignment) {
+   return align_size_up_((intptr_t)ptr, (intptr_t)alignment) == (intptr_t)ptr;
+ }
+ 
  inline intptr_t align_size_up(intptr_t size, intptr_t alignment) {
    return align_size_up_(size, alignment);
  }
  
  #define align_size_down_(size, alignment) ((size) & ~((alignment) - 1))
  
  inline intptr_t align_size_down(intptr_t size, intptr_t alignment) {
    return align_size_down_(size, alignment);
  }
  
+ inline void* align_ptr_up(void* ptr, size_t alignment) {
+   return (void*)align_size_up((intptr_t)ptr, (intptr_t)alignment);
+ }
+ 
+ inline void* align_ptr_down(void* ptr, size_t alignment) {
+   return (void*)align_size_down((intptr_t)ptr, (intptr_t)alignment);
+ }
+ 
+ inline void* offset_ptr(void* ptr, size_t offset) {
+   return (void*)((intptr_t)ptr + (intptr_t)offset);
+ }
+ 
  // Align objects by rounding up their size, in HeapWord units.
  
  #define align_object_size_(size) align_size_up_(size, MinObjAlignment)
  
  inline intptr_t align_object_size(intptr_t size) {