RFR (L): 8062370: Various minor code improvements

[David Holmes]

Hi Goetz,

The only issue I see is in:

src/share/vm/runtime/globals.cpp

where you replaced NEW_C_HEAP_ARRAY with os::strdup. To keep the "abort 
on OOM" semantics of NEW_C_HEAP_ARRAY you need to use os::strdup_check_oom.

Thanks,
David

On 30/10/2014 6:28 PM, Lindenmaier, Goetz wrote:
> Hi,
>
> this change contains a row of minor code improvements we did to fulfil
> our internal quality requirements.  We would like to share these with
> openJDK.
>
> Please review and test this change.  I please need a sponsor.
> http://cr.openjdk.java.net/~goetz/webrevs/8062370/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8062370
>
> We tested this on windows 64, linux x86_64, mac, solaris sparc 32+64 bit and,
> of course, the ppc platforms.
>
>
> Some details:
>
> CONST64(0x8000000000000000) is wrong, as 0x8... is positive, and thus not representable as i64 what is used in the CONST64 macro. This change adapts UCONST64 to use ui64, and the usages of these macros where necessary.
>
> We add some more strncpy uses.  Also, we fix strncpy on windows.  There, strncpy does not write a \0 into the last byte if the copied string is too long.
>
> We add some missing memory frees and some closing of files.
>
> jio_vsnprintf() works differently on windows and linux. This change adapts this to show the same behaviour on all platforms. See java.cpp.
>
> Best regards,
>
>    Goetz
>
>
>
>