RFR 8191278: MappedByteBuffer bulk access memory failures are not handled gracefully

[Tobias Hartmann]

Hi Harold,

so we are checking with StubRoutines::contains() if we are inside StubRoutines::unsafe_arraycopy(),
right? What if StubRoutines::contains(pc) returns true but we actually hit a SIGBUS inside another stub?

I also noticed that some changed lines have a broken indentation, for example, os_bsd_zero.cpp:197.

Best regards,
Tobias

On 28.02.19 21:22, Harold Seigel wrote:
> Hi,
> 
> Please review this fix for JDK-8191278.  The fix uses the GuardUnsafeAccess class in unsafe.cpp so
> that the signal handler will know to convert SIGBUS signals to exceptions.
> 
> The compiler related changes and much of the test were written by Jamsheesh (jcm).
> 
> Open Webrev: http://cr.openjdk.java.net/~hseigel/bug_8191278/webrev/index.html
> 
> JBS Bug:  https://bugs.openjdk.java.net/browse/JDK-8191278
> 
> The fix was tested on Linux x64, Mac OS, Solaris Sparc, and Windows.  Testing was not done on the
> other platforms changed by this fix.
> 
> The fix was regression tested by running Mach5 tiers 1 and 2 tests and builds on Linux x64, Solaris,
> Windows, and Mac OS X, by running Mach5 tiers 3 -5 on Linux x64, and by running JCK-13 Lang and VM
> tests on Linux x64.
> 
> Thanks, Harold
>