RFR: 8300139 : [AIX] Use pthreads to avoid JNI_createVM call from primordial thread [v2]

[Tyler Steele]

On Wed, 8 Feb 2023 13:11:25 GMT, Varada M <duke at openjdk.org> wrote:

>> 1. test/jdk/jni/nullCaller/NullCallerTest.java
>> 2. test/jdk/java/lang/reflect/exeCallerAccessTest/CallerAccessTest.java
>> 3. test/hotspot/jtreg/runtime/jni/CalleeSavedRegisters/FPRegs.java 
>> 
>>     The above tests were blocked on AIX [@require os.family != "aix"] because these tests are failing to call JNI_CreateJavaVM. This is solved by implementing JNI_CreateJavaVM call via POSIX threads. 
>>    Similarly there are tests which are not blocked and still failing to call JNI_CreateJavaVM on AIX :
>> 
>> 4. test/hotspot/jtreg/runtime/jni/daemonDestroy/TestDaemonDestroy.java { PR : [12006](https://github.com/openjdk/jdk/pull/12006) }
>> 5. test/lib-test/jdk/test/lib/process/TestNativeProcessBuilder.java 
>> 
>> The reported issue : [8300139](https://bugs.openjdk.org/browse/JDK-8300139l)
>
> Varada M has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixes

test/hotspot/jtreg/runtime/jni/CalleeSavedRegisters/FPRegs.java line 2:

> 1: /*
> 2:  * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.

We shouldn't ever need to update the left (starting) year in this range; only the rightmost year should change. Please update this line to have the range `2016, 2023`.

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PR: https://git.openjdk.org/jdk/pull/12302