RFR(XXS) JDK-8191042 Deprecate VM option CheckEndorsedAndExtDirs

[David Holmes]

Hi Ioi,

Looks good.

Just need to wait for the CSR to be approved before pushing.

Thanks,
David

On 16/11/2017 8:04 AM, Ioi Lam wrote:
> Hi, please review this very small change:
> 
>      https://bugs.openjdk.java.net/browse/JDK-8191042
> 
> The endorsed standards override mechanism and the extensions mechanism
> were removed in JDK 9 via JEP 220.
> 
> The CheckEndorsedAndExtDirs option is disabled by default. However, if
> it's enabled in the command-line, the VM would check the endorsed and ext
> directories so that the VM terminates if they exist. These checks are no
> longer needed in JDK 10 and beyond and can be removed.
> 
> This task is the first step in the removal -- we need to mark this option
> as deprecated and print a warning message when it's used. The option
> itself, and the code that uses it, will be removed in a subsequent JDK
> release.
> 
> Tested with hotspot tier1/2
> 
> Thanks
> - Ioi
> 
> ===================================
> 
> diff -r d76a6042f5d7 src/hotspot/share/runtime/arguments.cpp
> --- a/src/hotspot/share/runtime/arguments.cpp    Wed Nov 08 09:03:24 
> 2017 -0800
> +++ b/src/hotspot/share/runtime/arguments.cpp    Wed Nov 15 14:00:58 
> 2017 -0800
> @@ -383,6 +383,7 @@
>     { "MinRAMFraction",               JDK_Version::jdk(10), 
> JDK_Version::undefined(), JDK_Version::undefined() },
>     { "InitialRAMFraction",           JDK_Version::jdk(10), 
> JDK_Version::undefined(), JDK_Version::undefined() },
>     { "IgnoreUnverifiableClassesDuringDump", JDK_Version::jdk(10), 
> JDK_Version::undefined(), JDK_Version::undefined() },
> +  { "CheckEndorsedAndExtDirs",      JDK_Version::jdk(10), 
> JDK_Version::undefined(), JDK_Version::undefined() },
> 
>     // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted 
> by obsolete_in then expired_in:
>     { "DefaultMaxRAMFraction",        JDK_Version::jdk(8), 
> JDK_Version::undefined(), JDK_Version::undefined() },
>