This is a hassle-free BBA option intended for local play with multiple
Dolphin instances running *in the same system*. After selecting
**Broadband Adapter (IPC)** in the **SP1** slot in the GameCube section
in the settings, games that support LAN play will be able to discover
each other, without requiring third-party software or relatively complex
TAP setups.
The implementation is based on cpp-ipc, a high-performance inter-process
communication library that uses shared memory as transport layer.
Supported platforms are:
- [x] Linux
- [x] Windows
- [ ] macOS (cpp-ipc does not support this platform)
- [ ] FreeBSD (cpp-ipc does not support this platform)
- [ ] Android (cpp-ipc needs some adjustments; while it could work,
launching two Dolphin instances within the same Android system may be
both challenging and impractical)
PauseAndLock is now only called with do_lock=true, and unpause_on_unlock
only ever was used when do_lock is false (which is now handled in
RestoreStateAndUnlock instead), so both parameters are unnecessary.
Replace calls of PauseAndLock(do_lock=false) with new function
RestoreStateAndUnlock for clarity.
Callers of PauseAndLock ignored the return value when do_lock is
false, so RestoreStateAndUnlock doesn't need to return anything.
RestoreStateAndUnlock was only called with control_adjacent=true. Remove
the parameter and unconditionally call the function that was gated
behind it being true.
CPUManager::PauseAndLock is now only called with do_lock=true, and
unpause_on_unlock only ever was used when do_lock is false (which is now
handled in RestoreStateAndUnlock instead), so both parameters are
unnecessary.