src/share/vm/utilities/globalDefinitions.hpp

*** 241,250 ****
--- 241,280 ----
    } else {
      return s;
    }
  }
  
+ inline const char* exact_unit_for_byte_size(size_t s) {
+ #ifdef _LP64
+   if (s >= G && (s % G) == 0) {
+     return "G";
+   }
+ #endif
+   if (s >= M && (s % M) == 0) {
+     return "M";
+   }
+   if (s >= K && (s % K) == 0) {
+     return "K";
+   }
+   return "B";
+ }
+ 
+ inline size_t byte_size_in_exact_unit(size_t s) {
+ #ifdef _LP64
+   if (s >= G && (s % G) == 0) {
+     return s / G;
+   }
+ #endif
+   if (s >= M && (s % M) == 0) {
+     return s / M;
+   }
+   if (s >= K && (s % K) == 0) {
+     return s / K;
+   }
+   return s;
+ }
+ 
  //----------------------------------------------------------------------------------------------------
  // VM type definitions
  
  // intx and uintx are the 'extended' int and 'extended' unsigned int types;
  // they are 32bit wide on a 32-bit platform, and 64bit wide on a 64bit platform.