RFR: jdk10: 8169646: Remove launcher's -d32/-d64 option

[David Holmes]

Hi Kumar,

On 7/05/2017 1:21 AM, Kumar Srinivasan wrote:
> Hello,
>
> Please review the changes to remove the java launcher's data model
> options  -d32/-d64, these options existed to support Solaris dual-mode
> operation, however for uniformity, these options were accepted by other
> platforms as well.  These options are  now obsolete, and deprecated in
> jdk9,and are now being removed.
>
> Webrev: http://cr.openjdk.java.net/~ksrini/8169646/webrev.0
> Issue: https://bugs.openjdk.java.net/browse/JDK-8169646

This seems okay in itself, though I'm curious why you made the 
launcher/jli responsible for treating -d32/-d64 as invalid options 
instead of just passing them through to the VM to let it reject them as 
it does any other non-existent option eg:

  > java -foo -version
Unrecognized option: -foo
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

I also see some pre-existing messiness you might want to tidy up while 
you're in the area :)

src/java.base/macosx/native/libjli/java_md_macosx.c

378     JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%s%s%sjvm.cfg",
379                  jrepath, FILESEP, FILESEP,  "", "");

The last two %s should just be removed instead of passing empty strings.

  422     } else {
  423         /*
  424          * macosx client library is built thin, i386 only.
  425          * 64 bit client requests must load server library
  426          */
  427         const char *jvmtypeUsed = "server";
  428         JLI_Snprintf(jvmpath, jvmpathsize, "%s/lib/%s/" JVM_DLL, 
jrepath, jvmtypeUsed);
  429     }

I don't think we have ever had 32-bit client on OSX! So this whole 
clause seems strange. That aside you can just hardwire %s/lib/server 
instead of using the jvmTypeUsed variable.

---

src/java.base/unix/native/libjli/java_md_solinux.c

  323     JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%s%sjvm.cfg",
  324             jrepath, FILESEP, FILESEP, FILESEP);

Another strange version of this code - only 4 %s this time, but adjacent 
FILESEP. :) I'm assuming this is from when <arch> was removed.

Thanks,
David

> Thanks
> Kumar
>
> PS: Thanks to David Holmes and Igor Ignatyev the -d32/-d64 flags have been
> purged from internal test suites.
>