RFR: 8221260: Initialize more class members on construction, remove some unused ones

[Thomas Schatzl]

On Thu, 2019-03-21 at 18:48 -0400, Kim Barrett wrote:
> > On Mar 21, 2019, at 3:33 PM, Leo Korinth <leo.korinth at oracle.com>
> > wrote:
> > 
> > Hi,
> > 
> > This is a code cleanup. This change removes some warnings when
> > opening the files from within Eclipse.
> > 
> > I try to:
> > - Initialize more class members as soon as possible
> > - Remove some (5) unused members, and one unused faulty constructor
> > - Prefer to use initializer list instead of constructor body
> > 
> > Enhancement:
> > https://bugs.openjdk.java.net/browse/JDK-8221260
> > 
> > Webrev:
> > http://cr.openjdk.java.net/~lkorinth/8221260/00
> > 
> > Testing:
> > Mach5 tier1-3
> > 
> > Thanks,
> > Leo
> 
> Having wasted way too many hours debugging unitialized data members,
> I'm in favor of this sort of thing.  Looks good, other than a couple
> minor things below for which I don't need a new webrev.
> 
> Nice find: PSFileBackedVirtualSpace constructor.  I was trying to
> figure out how this even compiled pre-C++11 delegating constructors,
> and then realized that was a curly-brace and not a colon.
> 
> -------------------------------------------------------------------
> ----------- 
> src/hotspot/share/gc/parallel/psMarkSweepDecorator.hpp
> 59     _allowed_dead_ratio(allowed_dead_ratio){ }
> 
> Add a space before the curly-brace.
> 
> -------------------------------------------------------------------
> ----------- 
> src/hotspot/share/gc/parallel/psParallelCompact.cpp
> 410 #ifdef  ASSERT
> 411   _region_end(NULL),
> 412 #endif  // #ifdef ASSERT
> 
> This can be done more compactly as
> 
>   DEBUG_ONLY(_region_end(NULL) COMMA)
> 
> Your choice...
> 
> -------------------------------------------------------------------
> -----------

  looks good with Kim's suggestions.

Thomas