FEXCore: Move InternalThreadState StartRunning to frontend #4182
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Sonicadvance1
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We were using this variable for two things, letting the frontend signal to the backend that it wants to start executing once the thread is created, and also for handling thread pausing. These two features are conflated with one another and actually makes things more confusing. - Move StartRunning/StartPaused to the frontend, because its a construct that only needs to exist in the frontend - Adds a FEX::HLE::ThreadStateObject CV for handling pausing, which only needs to exist for gdbserver
Now that most of the thread tracking is in the frontend, change this over to building the thread execution handler on the parent thread. Removes a memory allocation/free pair, and removes the copy of each variable in the child thread.
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lioncash
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Relies on FEX-Emu#4182 and FEX-Emu#4183 getting merged first, which is the first three commits. These are all frontend constructs with mostly deprecated constraints. WaitingToStart isn't used anymore, Running is effectively always true (and behaviour has changed that if a thread is alive, it's running). The only one that remains is `ThreadSleeping` which is only handled in the frontend, and there was some conflation between ThreadSleeping and Running which was hard to gauge. So delete `Running` and `WaitingToStart`, but move `ThreadSleeping` to the frontend.
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We were using this variable for two things, letting the frontend signal
to the backend that it wants to start executing once the thread is
created, and also for handling thread pausing. These two features are
conflated with one another and actually makes things more confusing.
that only needs to exist in the frontend
needs to exist for gdbserver