RFR: 8255741: Zero: print signal name in unhandled signal handler

Mon Nov 2 10:58:55 UTC 2020

On Mon, 2 Nov 2020 10:15:24 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> At least one test -- `runtime/Safepoint/TestAbortVMOnSafepointTimeout.java` -- fails on Zero with:
> 
> # Internal Error (/home/shade/trunks/jdk/src/hotspot/os_cpu/linux_zero/os_linux_zero.cpp:250), pid=560280, tid=560281
> # fatal error: caught unhandled signal 4
> 
> The test expects "SIGKILL (sent by kill)" in the test output.
> 
> Additional testing:
>  - [x] `TestAbortVMOnSafepointTimeout.java` now passes on Linux x86_64 Zero.

LGTM

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Marked as reviewed by stuefe (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1001