Looking to tighten up access between the java and native level zip
library calls. This extra check should ensure that we don't hit SEGV on
thread races.
I've also taken the opportunity to make the ZStreamRef address variable
volatile. I'm still getting reports of zip crashes in the deflate,
deflate_slow functions [1] but can't reproduce the failure. Access to
the ZStreamRef address variable seems to be synchronized correctly in
all calling sites. I'm just be extra sure for possible sharing across
multiple threads.
bug report : https://bugs.openjdk.java.net/browse/JDK-6907252
webrev : http://cr.openjdk.java.net/~coffeys/webrev.6907252/webrev/
[1] https://bugs.openjdk.java.net/browse/JDK-8028216
--
Regards,
Sean.
