JDK-8210004 : Thread.sleep(millis, nanos) timeout returns early
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.lang
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2018-08-27
  • Updated: 2019-03-13
  • Resolved: 2018-09-14
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JDK 12
12 b12Fixed
Related Reports
Duplicate :  
JDK-6811570 - Thread.sleep returns early
Duplicate :  
JDK-6568526 - (thread) Thread.sleep(millis, nanos) should not return early
Relates :  
JDK-8065372 - Object.wait(ms, ns) timeout returns early
Description
In 
JDK-8065372: Object.wait(ms, ns) timeout returns early
we fixed Object.wait to not return early by rounding non-zero nanos up to the next millisecond.
We should make the same change to Thread.sleep
Comments
Thread.join(ns, nanos) also. (Did you mean round up the millis). Object.wait does: if (nanos > 0) { timeoutMillis++; } Both methods are specified as "waits at most", but rounding up will prevent early returns.
29-08-2018