RFR 8173715 (rev2): Remove Flat Profiler

[Gerard Ziemski]

Thank you for the review.


cheers

> On Aug 22, 2017, at 2:59 AM, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:
> 
> Looks good.
> 
> Best regards,
> Vladimir Ivanov
> 
> On 8/19/17 12:00 AM, Gerard Ziemski wrote:
>> hi all,
>> The FlatProfiler (i.e. -Xprof) has been deprecated in jdk9, and now it’s the time to remove the code and obsolete the -Xprof flag.
>> Changes from rev1 to address David’s feedback:
>> - obsoleted the flag (it’s still accepted, but ignored)
>> - fixed copyright year in "src/os_cpu/linux_s390/vm/thread_linux_s390.hpp”
>> - improved comment about the signal based suspend/resume mechanism in "os_*.cpp” files
>> - removed entire comment from "src/os/solaris/vm/osThread_solaris.hpp"
>> issue:  https://bugs.openjdk.java.net/browse/JDK-8173715
>> webrev: http://cr.openjdk.java.net/~gziemski/8173715_rev2_hotspot