RFR (XS) JDK-8026041: JVM crashes with assert "assert(is_updated()) failed: must not be clear", with -XX:+PrintGCApplicationConcurrentTime in -Xcomp mode

[Staffan Larsen]

Looks good!

Thanks,
/Staffan

On 11 okt 2013, at 01:12, Lois Foltan <lois.foltan at oracle.com> wrote:

> 
> Please review the following fix: 
> 
> Webrev: 
>     http://cr.openjdk.java.net/~hseigel/bug_jdk8026041/
> 
> Bug: JVM crashes with assert "assert(is_updated()) failed: must not be clear" 
>          with -XX:+PrintGCApplicationConcurrentTime in -Xcomp mode
>     https://bugs.openjdk.java.net/browse/JDK-8026041
> 
> Summary of fix: 
>     Prior to printing the time interval for -XX:+PrintGCApplicationConcurrentTime in 
>     RuntimeService::record_safepoint_begin(), check first to verify that the VM initialization 
>     is complete.  The recent addition of pre-initialization of Method* classes during VM startup, 
>     JDK-8022595, caused enough code to be generated that GuaranteedSafepointInterval timer
>     in VMThread::loop() timed out resulting in an early safepoint.  Thank you to Staffan Larsen 
>     and David Holmes for troubleshooting this for runtime. 
> 
> Tests: 
>     JTREG, vm.quick.testlist with "-server -Xcomp -XX:+PrintGCApplicationConcurrentTime" specified (in progress) 
> 
> Thank you, Lois 
> 

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