RFR: 8253742: POSIX signal code cleanup [v8]

[Gerard Ziemski]

On Tue, 17 Nov 2020 15:45:58 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Gerard Ziemski has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - remove leftover comment
>>  - implement Thomas' final feedback
>
> src/hotspot/os/posix/signals_posix.cpp line 1721:
> 
>> 1719:   // initialize suspend/resume support - must do this before signal_sets_init()
>> 1720:   if (SR_initialize() != 0) {
>> 1721:     vm_exit_during_initialization(err_msg("SR_initialize failed"));
> 
> err_msg not needed, just use the plain literal

Ah, `err_msg()` is for the cases where we need to print out values (i.e. formatting).

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PR: https://git.openjdk.java.net/jdk/pull/636