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Author: Riven (posted 2014-06-04 15:18:56, viewed 78 times)

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private static void testPerfUnsf32(int data) {
         for(int k = 0; k < 256 * 1024; k++) {
            for(int m = 1; m < 16; m++) {
               long src = handle2pointer(data) + (((m * 13) & 0xf) << 2);
               long dst = handle2pointer(data) + (m << 2);
               StructUnsafe.UNSAFE.putInt(dst, StructUnsafe.UNSAFE.getInt(src));
            }
         }
      }

      private static void testPerfUnsf32i(int data) {
         for(int k = 0; k < 256 * 1024; k++) {
            for(int m = 1; m < 16; m++) {
               iput(data, m, iget(data, (m * 13) & 0xf));
            }
         }
      }

      private static long handle2pointer(int handle) {
         return (handle & 0xFFFF_FFFFL) << 2;
      }

      private static void iput(int handle, int idx, int val) {
         StructUnsafe.UNSAFE.putInt(handle2pointer(handle + idx), val);
      }

      private static int iget(int handle, int idx) {
         return StructUnsafe.UNSAFE.getInt(handle2pointer(handle + idx));
      }



unsf32:   711us
unsf32i: 5380us

unsf32:   705us
unsf32i: 5389us

unsf32:   705us
unsf32i: 5396us

unsf32:   705us
unsf32i: 5392us





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