dolphin/Source/Core/Core/DSP
JosJuice 09f3f9b41a Remove NonCopyable
The class NonCopyable is, like the name says, supposed to disallow
copying. But should it allow moving?

For a long time, NonCopyable used to not allow moving. (It declared
a deleted copy constructor and assigment operator without declaring
a move constructor and assignment operator, making the compiler
implicitly delete the move constructor and assignment operator.)
That's fine if the classes that inherit from NonCopyable don't need
to be movable or if writing the move constructor and assignment
operator by hand is fine, but that's not the case for all classes,
as I discovered when I was working on the DirectoryBlob PR.

Because of that, I decided to make NonCopyable movable in c7602cc,
allowing me to use NonCopyable in DirectoryBlob.h. That was however
an unfortunate decision, because some of the classes that inherit
from NonCopyable have incorrect behavior when moved by default-
generated move constructors and assignment operators, and do not
explicitly delete the move constructors and assignment operators,
relying on NonCopyable being non-movable.

So what can we do about this? There are four solutions that I can
think of:

1. Make NonCopyable non-movable and tell DirectoryBlob to suck it.

2. Keep allowing moving NonCopyable, and expect that classes that
   don't support moving will delete the move constructor and
   assignment operator manually. Not only is this inconsistent
   (having classes disallow copying one way and disallow moving
   another way), but deleting the move constructor and assignment
   operator manually is too easy to forget compared to how tricky
   the resulting problems are.

3. Have one "MovableNonCopyable" and one "NonMovableNonCopyable".
   It works, but it feels rather silly...

4. Don't have a NonCopyable class at all. Considering that deleting
   the copy constructor and assignment operator only takes two lines
   of code, I don't see much of a reason to keep NonCopyable. I
   suppose that there was more of a point in having NonCopyable back
   in the pre-C++11 days, when it wasn't possible to use "= delete".

I decided to go with the fourth one (like the commit title says).
The implementation of the commit is fairly straight-forward, though
I would like to point out that I skipped adding "= delete" lines
for classes whose only reason for being uncopyable is that they
contain uncopyable classes like File::IOFile and std::unique_ptr,
because the compiler makes such classes uncopyable automatically.
2017-08-22 16:40:34 +02:00
..
Interpreter DSPIntMultiplier: Place translation unit local functions in an anonymous namespace 2017-03-26 16:42:35 -04:00
Jit Merge pull request #5097 from MerryMage/pic 2017-03-17 22:24:03 +01:00
DSPAccelerator.cpp DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPAccelerator.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPAnalyzer.cpp DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPAnalyzer.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPAssembler.cpp Core: include what you use 2017-06-07 01:20:48 -04:00
DSPAssembler.h DSPAssembler: make ORG directive correctly seek forward 2017-05-19 19:53:38 -07:00
DSPBreakpoints.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPCaptureLogger.cpp Core: Remove unnecessary includes 2017-06-15 18:52:22 -04:00
DSPCaptureLogger.h Remove NonCopyable 2017-08-22 16:40:34 +02:00
DSPCodeUtil.cpp DSPDisassembler: remove unused base_addr parameter 2017-06-30 01:47:02 -07:00
DSPCodeUtil.h Move DSP::CodesToHeader to DSPTool 2017-06-05 19:28:40 -07:00
DSPCommon.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPCore.cpp dsp_rom: skip bootucode_ax when running from entrypoint 2017-08-10 10:53:12 -07:00
DSPCore.h DSPCore: Make g_cycles_left a regular member variable of DSPEmitter 2017-02-07 21:56:57 -05:00
DSPDisassembler.cpp DSPDisassembler: fail when buffer too large 2017-06-30 01:47:02 -07:00
DSPDisassembler.h DSPDisassembler: remove unused base_addr parameter 2017-06-30 01:47:02 -07:00
DSPHost.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPHWInterface.cpp Core: include what you use 2017-06-07 01:20:48 -04:00
DSPHWInterface.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPMemoryMap.cpp DSPTables: Hide main opcode tables 2017-01-19 17:46:07 -05:00
DSPMemoryMap.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00
DSPStacks.cpp DSPCore: Convert DSP stack register enum into an enum class 2017-01-28 09:17:27 -05:00
DSPStacks.h DSPCore: Convert DSP stack register enum into an enum class 2017-01-28 09:17:27 -05:00
DSPTables.cpp DSPTables: Hide remaining exposed opcode tables 2017-01-26 05:17:01 -05:00
DSPTables.h DSPAssembler: fix handling of P_REG1C 2017-06-03 15:16:39 -07:00
LabelMap.cpp Core: include what you use 2017-06-07 01:20:48 -04:00
LabelMap.h DSP: Namespace remaining un-namespaced DSP code 2016-12-31 17:20:14 -05:00