Many thanks to the folks that reviewed this internally and provided
much appreciated feedback:
- Daniel Daugherty
- David Holmes
- Erik Osterlund
- Jerry Thornbrugh
- Karen Kinnear
- Kim Barrett
- Robbin Ehn
- Serguei Spitsyn
- Stefan Karlson
Since there are three contributing authors, we have been reviewing
(and arguing over) each other's code. It has been an adventure!
Dan, Erik, and Robbin
On 10/9/17 1:41 PM, Daniel D. Daugherty wrote:
Greetings,
We have a (eXtra Large) fix for the following bug:
8167108 inconsistent handling of SR_lock can lead to crashes
https://bugs.openjdk.java.net/browse/JDK-8167108
This fix adds a Safe Memory Reclamation (SMR) mechanism based on
Hazard Pointers to manage JavaThread lifecycle.
Here's a PDF for the internal wiki that we've been using to describe
and track the work on this project:
http://cr.openjdk.java.net/~dcubed/8167108-webrev/SMR_and_JavaThread_Lifecycle-JDK10-04.pdf
Dan has noticed that the indenting is wrong in some of the code quotes
in the PDF that are not present in the internal wiki. We don't have a
solution for that problem yet.
Here's the webrev for current JDK10 version of this fix:
http://cr.openjdk.java.net/~dcubed/8167108-webrev/jdk10-04-full
This fix has been run through many rounds of JPRT and Mach5 tier[2-5]
testing, additional stress testing on Dan's Solaris X64 server, and
additional testing on Erik and Robbin's machines.
We welcome comments, suggestions and feedback.
Daniel Daugherty
Erik Osterlund
Robbin Ehn
