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Move clipboard processing to a separate thread to avoid blocking the main thread during pastes

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This commit is contained in:
Cameron Gutman
2021-02-07 17:18:35 -06:00
parent 8372717a09
commit 05e4c5b507
4 changed files with 108 additions and 19 deletions
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21
app/streaming/input/input.cpp
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@@ -34,7 +34,8 @@ SdlInputHandler::SdlInputHandler(StreamingPreferences& prefs, NvComputer*, int s
m_RightButtonReleaseTimer(0),
m_DragTimer(0),
m_DragButton(0),
m_NumFingersDown(0)
m_NumFingersDown(0),
m_ClipboardData()
{
// Allow gamepad input when the app doesn't have focus if requested
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, prefs.backgroundGamepad ? "1" : "0");
@@ -196,6 +197,13 @@ SdlInputHandler::SdlInputHandler(StreamingPreferences& prefs, NvComputer*, int s
}
m_MouseMoveTimer = SDL_AddTimer(pollingInterval, SdlInputHandler::mouseMoveTimerCallback, this);
// Initialize state used by the clipboard thread before we start it
SDL_AtomicSet(&m_ShutdownClipboardThread, 0);
m_ClipboardHasData = SDL_CreateCond();
m_ClipboardLock = SDL_CreateMutex();
m_ClipboardThread = SDL_CreateThread(SdlInputHandler::clipboardThreadProc, "Clipboard Sender", this);
}
SdlInputHandler::~SdlInputHandler()
@@ -221,6 +229,17 @@ SdlInputHandler::~SdlInputHandler()
SDL_RemoveTimer(m_RightButtonReleaseTimer);
SDL_RemoveTimer(m_DragTimer);
// Wake up the clipboard thread to terminate it
SDL_AtomicSet(&m_ShutdownClipboardThread, 1);
SDL_CondBroadcast(m_ClipboardHasData);
// Wait for it to terminate
SDL_WaitThread(m_ClipboardThread, nullptr);
// Now we can safely clean up its resources
SDL_DestroyCond(m_ClipboardHasData);
SDL_DestroyMutex(m_ClipboardLock);
#if !SDL_VERSION_ATLEAST(2, 0, 9)
SDL_QuitSubSystem(SDL_INIT_HAPTIC);
SDL_assert(!SDL_WasInit(SDL_INIT_HAPTIC));