(S) RFR: 8141024: [Solaris] Obsolete UseAltSigs

serguei.spitsyn at oracle.com serguei.spitsyn at oracle.com
Sat Nov 14 23:32:45 UTC 2015


Hi David,

There is no webrev link in this RFR.

Thanks,
Serguei

On 11/13/15 23:45, David Holmes wrote:
> Ping!
>
> Thanks,
> David
>
> On 13/11/2015 11:31 AM, David Holmes wrote:
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8141024
>>
>> webrev:
>>
>>
>> History:
>>
>> The JVM claimed SIGUSR1 and SIGUSR2 for the INTERRUPT and ASYNC signals,
>> respectively.
>>
>> -Xusealtsigs, mapping to -XX:+UseAltSigs, was provided to allow users to
>> reclaim those signals and instead use two of the real-time signals
>> (between SIGRTMIN and SIGRTMAX)
>>
>> As of Solaris 10, Solaris provides SIGJVM1 and SIGJVM2 exclusively for
>> the JVMs use. This avoids any conflict with user-defined signal usage.
>>
>> As of Java 6 we documented that on Solaris 10
>> -Xusealtsigs/-XX:+UseAltSigs had no affect:
>>
>> http://www.oracle.com/technetwork/java/javase/signals-139944.html#gbzbh
>>
>> As we no longer support Solaris versions older than 10, we do not need
>> the UseAltSigs functionality and the flags can be made Obsolete.
>>
>> Thanks,
>> David



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