libusb transfer callbacks might be called immediately during transfer
submission in some cases. (libusb doesn't even specify what thread
the callback is invoked on.) In other words, it is possible to reach
the transfer callback from the CPU thread, and not just from the
USB event handling thread.
So CoreTiming::FromThread::NON_CPU is incorrect and should instead
be ANY.
Unfortunately, it appears that using libusb's synchronous transfer API
from several threads causes nasty race conditions in event handling and
can lead to deadlocks, despite the fact that libusb's synchronous API
is documented to be perfectly fine to use from several threads (only
the manual polling functionality is supposed to require special
precautions).
Since usbdk was the only real reason for using a single libusb context
and since usbdk (currently) has so many issues with Dolphin, I think
dropping support for it in order to fix other backends is acceptable.
In a few cases we needed to alter... less than ideal parameter types.
While u8 may have been OK with printf-style formatting, which promotes
most smaller types back to int, this won't work with fmt. fmt preserves
the type of the passed in arguments, meaning that u8, being an alias of
uint8_t (itself being an alias of unsigned char on all the platforms we
support), will print out as a character, not a numeric value.
As such, we amend some functions to operate on u32 values for two
reasons:
1. We actually want it to print out as a value
2. Arithmetic on unsigned types smaller than unsigned int will actually promote to an int,
not unsigned int. This is very non-obvious to some and makes for
error-prone code. < sizeof(int) types are great for storage, not so
much for performing unsigned arithmetic, despite the signedness of
the type.
While we do have this library as part of the public linkage interface in
the common library target, which will be used in the future for the
logging macros, we should still be explicit that we're using this
library. Therefore, we privately link it in to be explicit about it.
Avoids dragging in IniFile, EXI device and SI device headers in this header which is
quite widely used throughout the codebase.
This also uncovered a few cases where indirect inclusions were being
relied upon, which this also fixes.
We can std::move the std::string parameter in Label's constructor,
allowing the constructor to be moved into in calling code.
We can cascade this outwards in the interface as well.
Given this is a private struct and it's used in a container that
supports incomplete types, we can forward-declare it and move it into
the cpp file. While we're at it, we can change the name to Label to
follow our formatting guidelines.
We also move the destructor definition into the cpp file, as that will
allow us to make the entire label_t type hidden from external view in a
following change.
This aims to emulate rotational latency as part of the disc drive
timings, which makes loading times have more variance (like on a
real disc drive) but should not affect the average loading times.
Starting with C++17, this allows for the same behavior as the existing
code, but without the need to manually write the out-of-class
definitions as well.
This fixes the desync on playback of start-from-boot input recordings
made while using the GC adapter, as well as other desyncs that could
potentially occur in other circumstances where this bit is used.
I used a previously reserved bit in the ControllerState to store the
new data, so this shouldn't significantly break backwards
compatibility. However, tools that aren't aware of this new bit may set
it to 0, which will break input recordings that contain it.
Since C++17, non-member std::size() is present in the standard library
which also operates on regular C arrays. Given that, we can just replace
usages of ArraySize with that where applicable.
In many cases, we can just change the actual C array ArraySize() was
called on into a std::array and just use its .size() member function
instead.
In some other cases, we can collapse the loops they were used in, into a
ranged-for loop, eliminating the need for en explicit bounds query.
MessageData must be a trivially copyable type, given it's copied into
emulated memory via our memory copy function CopyToEmu. Under the
covers, this function utilizes memcpy. One of memcpy's requirements is
that pointers to it point to types that are trivially copyable,
otherwise the behavior is undefined.
Given that, we can enforce this requirement at compile-time.
