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Core: Don't spawn an extra thread in single-core mode 

We don't need a message pump thread for the video backend, as the window
is created on the UI thread, not the "idle" emu thread.
This commit is contained in:
Stenzek 2018-01-26 12:44:23 +10:00
parent c81ac1a81d
commit f9053527a9
1 changed files with 6 additions and 30 deletions
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36
Source/Core/Core/Core.cpp
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@ -421,12 +421,6 @@ static void FifoPlayerThread(const std::optional<std::string>& savestate_path,
{
s_is_started = true;
Host_Message(WM_USER_STOP);
while (CPU::GetState() != CPU::State::PowerDown)
{
if (!_CoreParameter.bCPUThread)
g_video_backend->PeekMessages();
std::this_thread::sleep_for(std::chrono::milliseconds(20));
}
s_is_started = false;
}
@ -610,30 +604,16 @@ static void EmuThread(std::unique_ptr<BootParameters> boot)
// We have now exited the Video Loop
INFO_LOG(CONSOLE, "%s", StopMessage(false, "Video Loop Ended").c_str());
// Join with the CPU thread.
s_cpu_thread.join();
INFO_LOG(CONSOLE, "%s", StopMessage(true, "CPU thread stopped.").c_str());
}
else // SingleCore mode
{
// The spawned CPU Thread also does the graphics.
// The EmuThread is thus an idle thread, which sleeps while
// waiting for the program to terminate. Without this extra
// thread, the video backend window hangs in single core mode
// because no one is pumping messages.
Common::SetCurrentThreadName("Emuthread - Idle");
// Spawn the CPU+GPU thread
s_cpu_thread = std::thread(cpuThreadFunc, savestate_path, delete_savestate);
while (CPU::GetState() != CPU::State::PowerDown)
{
g_video_backend->PeekMessages();
Common::SleepCurrentThread(20);
// Become the CPU thread
cpuThreadFunc(savestate_path, delete_savestate);
}
}
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping Emu thread ...").c_str());
// Wait for s_cpu_thread to exit
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping CPU-GPU thread ...").c_str());
#ifdef USE_GDBSTUB
INFO_LOG(CONSOLE, "%s", StopMessage(true, "Stopping GDB ...").c_str());
@ -641,10 +621,6 @@ static void EmuThread(std::unique_ptr<BootParameters> boot)
INFO_LOG(CONSOLE, "%s", StopMessage(true, "GDB stopped.").c_str());
#endif
s_cpu_thread.join();
INFO_LOG(CONSOLE, "%s", StopMessage(true, "CPU thread stopped.").c_str());
if (core_parameter.bCPUThread)
g_video_backend->Video_CleanupShared();