RFR: 8254702: jpackage app launcher crashes on CentOS [v6]

[Andy Herrick]

On Fri, 5 Feb 2021 17:44:21 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

>> Fix for https://bugs.openjdk.java.net/browse/JDK-8254702
>> 
>> The fix splits Linux app launcher in app launcher and launcher shared lib. App launcher is pure C and doesn't have C++ code. App launcher lib incorporates bulk of C++ code from app launcher. 
>> At startup app launcher loads launcher shared lib and calls functions it provides to get data for launching JVM (path to jli lib and arguments for JLI_Launch function call).
>> App launcher unloads launcher shared lib before launching JVM to remove C++ runtime from the process memory.
>> 
>> Getting rid of C++ code from app launcher required to rewrite app installation location lookup code from C++ to C. LinuxPackage.c source is C alternative for https://github.com/openjdk/jdk/blob/master/src/jdk.jpackage/linux/native/applauncher/Package.cpp and https://github.com/openjdk/jdk/blob/master/src/jdk.jpackage/linux/native/applauncher/Executor.cpp.
>> 
>> Layout of jpackage's native code changed:
>> - `common`: code shared between all jpackage binaries.
>> - `applauncher`: launcher only code.
>> - `applauncherlib`: launcher lib code on Linux and launcher code on other platforms.
>> - `applaunchercommon`: code shared between launcher and launcher lib on Linux and launcher code on other platforms.
>
> Alexey Semenyuk has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8254702: jpackage app launcher crashes on CentOS

looks ok if build team approves

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Marked as reviewed by herrick (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2320