System.java Development Question

[David Holmes]

On 4/08/2018 10:29 PM, mr rupplin wrote:
> Any help?

Patience is a virtue. ;-)

As Alan indicated in older releases, like 9, there is a mapfile used to 
tell the linker about exported entry points to native libraries. As you 
are using OpenJDK 9 you will need to add the appropriate entry in

jdk/make/mapfiles/libjava/mapfile-vers

David
-----

> ________________________________
> From: mr rupplin <mearvk at outlook.com>
> Sent: Friday, August 3, 2018 9:42:26 AM
> To: Alan Bateman; core-libs-dev at openjdk.java.net
> Subject: Re: System.java Development Question
> 
> This is an OpenJDK 9 build.  Can you explain?  I'm very interested in getting all the details understood.  Hey thanks!
> 
> MR
> ________________________________
> From: Alan Bateman <Alan.Bateman at oracle.com>
> Sent: Friday, August 3, 2018 9:38 AM
> To: mr rupplin; core-libs-dev at openjdk.java.net
> Subject: Re: System.java Development Question
> 
> On 03/08/2018 06:22, mr rupplin wrote:
>> :
>>
>>
>> We get the following after running a trivial Java program:
>>
>> Exception in thread "main" java.lang.UnsatisfiedLinkError: java.lang.System.setMemoryAllocationListener0(Ljava/lang/memory/MemoryAllocationListener;)V
>> at java.base/java.lang.System.setMemoryAllocationListener0(Native Method)
>> at java.base/java.lang.System.setMemoryAllocationListener(System.java:261)
>> at Hope.<init>(Hope.java:19)
>> at Hope.main(Hope.java:11)
>>
>>
>> -- --
>>
>> Can we skip right to it?  What is the issue here?
>>
> Which JDK build is this? I can't tell if it has the map files used by
> the linker (mapfile-vers in the case of libjava) or not. The map files
> don't exist in the main line but they may exist if you are working on a
> patch for a previous release.
> 
> -Alan
>