This avoids a pseudo infinite loop where CodeWidget::UpdateCallstack
would lock the CPU in order to read the call stack, causing the CPU to
call Host_UpdateDisasmDialog because it's transitioning from running to
pausing, causing Host::UpdateDisasmDialog to be emitted, causing
CodeWidget::Update to be called, once again causing
CodeWidget::UpdateCallstack to be called, repeating the cycle.
Dolphin didn't go completely unresponsive during this, because
Host_UpdateDisasmDialog schedules the emitting of Host::UpdateDisasmDialog
to happen on another thread without blocking, but it was stopping certain
operations like exiting emulation from working.
This fixes a problem I was having where using frame advance with the
debugger open would frequently cause panic alerts about invalid addresses
due to the CPU thread changing MSR.DR while the host thread was trying
to access memory.
To aid in tracking down all the places where we weren't properly locking
the CPU, I've created a new type (in Core.h) that you have to pass as a
reference or pointer to functions that require running as the CPU thread.
This affected the memory and registers widgets (and possibly others). I'm pretty sure it regressed in 5f629abd8b.
The SetCodeVisible line is a new fix, but the equivalent already existed in the memory widget.
Before, only the symbols box would update. However, if you edit the symbol of a function in the call stack (which seems like something that would happen reasonably often while debugging), the call stack would be out of date until it was updated by clicking on it. Callers and calls were more of an edge case; for them to be out of date, you would need to right-click on an instruction in a function other than the one containing the currently-selected instruction (though it would also affect recursive functions).
Add Diff button to CodeWidget
Add Code Diff Tool window for recording and differencing functions. Allows finding specific functions based on when they run.
SPDX standardizes how source code conveys its copyright and licensing
information. See https://spdx.github.io/spdx-spec/1-rationale/ . SPDX
tags are adopted in many large projects, including things like the Linux
kernel.
QStringLiterals generate a buffer so that during runtime there's very
little cost to constructing a QString. However, this also means that
duplicated strings cannot be optimized out into a single entry that gets
referenced everywhere, taking up space in the binary.
Rather than use QStringLiteral(""), we can just use QString{} (the
default constructor) to signify the empty string. This gets rid of an
unnecessary string buffer from being created, saving a tiny bit of
space.
While we're at it, we can just use the character overloads of particular
functions when they're available instead of using a QString overload.
The characters in this case are Latin-1 to begin with, so we can just
specify the characters as QLatin1Char instances to use those overloads.
These will automatically convert to QChar if needed, so this is safe.
Changed itemSelectionChanged and itemClicked signal to itemPressed in CodeWidget.
Holding mouse down and moving will only travel up/down the stack one time.
This fixes the common occurrence of unintentionally traveling deeper down the stack or higher up the callstack than intended.
