src/java.base/share/classes/java/util/concurrent/ThreadLocalRandom.java

rev 17358 : 8182487: Add Unsafe.objectFieldOffset(Class, String)
Reviewed-by: dsimms, twisti, bchristi, mgerdin

*** 1048,1081 ****
      static final String BAD_RANGE = "bound must be greater than origin";
      static final String BAD_SIZE  = "size must be non-negative";
  
      // Unsafe mechanics
      private static final Unsafe U = Unsafe.getUnsafe();
!     private static final long SEED;
!     private static final long PROBE;
!     private static final long SECONDARY;
!     private static final long THREADLOCALS;
!     private static final long INHERITABLETHREADLOCALS;
!     private static final long INHERITEDACCESSCONTROLCONTEXT;
!     static {
!         try {
!             SEED = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("threadLocalRandomSeed"));
!             PROBE = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("threadLocalRandomProbe"));
!             SECONDARY = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("threadLocalRandomSecondarySeed"));
!             THREADLOCALS = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("threadLocals"));
!             INHERITABLETHREADLOCALS = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("inheritableThreadLocals"));
!             INHERITEDACCESSCONTROLCONTEXT = U.objectFieldOffset
!                 (Thread.class.getDeclaredField("inheritedAccessControlContext"));
!         } catch (ReflectiveOperationException e) {
!             throw new Error(e);
!         }
!     }
  
      /** Rarely-used holder for the second of a pair of Gaussians */
      private static final ThreadLocal<Double> nextLocalGaussian =
          new ThreadLocal<>();
  
--- 1048,1069 ----
      static final String BAD_RANGE = "bound must be greater than origin";
      static final String BAD_SIZE  = "size must be non-negative";
  
      // Unsafe mechanics
      private static final Unsafe U = Unsafe.getUnsafe();
!     private static final long SEED = U.objectFieldOffset
!             (Thread.class, "threadLocalRandomSeed");
!     private static final long PROBE = U.objectFieldOffset
!             (Thread.class, "threadLocalRandomProbe");
!     private static final long SECONDARY = U.objectFieldOffset
!             (Thread.class, "threadLocalRandomSecondarySeed");
!     private static final long THREADLOCALS = U.objectFieldOffset
!             (Thread.class, "threadLocals");
!     private static final long INHERITABLETHREADLOCALS = U.objectFieldOffset
!             (Thread.class, "inheritableThreadLocals");
!     private static final long INHERITEDACCESSCONTROLCONTEXT = U.objectFieldOffset
!             (Thread.class, "inheritedAccessControlContext");
  
      /** Rarely-used holder for the second of a pair of Gaussians */
      private static final ThreadLocal<Double> nextLocalGaussian =
          new ThreadLocal<>();