359   while (System.nanoTime() - startTime < 250000000) {
  360       synchronized(this){};
- 361       latch++;
+ 361       latch = (latch + 1) % Integer.MAX_VALUE;
  362   }

This block may be not CPU friendly as it may loop a large amount of times in a very short period (250milli).

What's the usage of line 360?  Just for some computation?

367   counter += latch;
The counter variable may be overflow too.


On 9/21/2016 8:57 AM, Jamil Nimeh wrote:
Hello all,

This fixes a bug found in stress testing where on faster CPUs the latch
can overflow resulting in a negative array index.  The fix avoids the
overflow by resetting the latch to 0 when it reaches Integer.MAX_VALUE -
1 and will continue increasing from there.

Bug: https://bugs.openjdk.java.net/browse/JDK-8049516
Webrev: http://cr.openjdk.java.net/~jnimeh/reviews/8049516/webrev.01/


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