WindyMadman/qBittorrent-Enhanced-Edition
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Work around application stuttering on Windows

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This is observed by unusual high page faults when the stuttering occurs.
With this workaround, the high page faults still occurs but the GUI remains responsive.
Original PR: #17311.
This commit is contained in:
Chocobo1 2022-07-05 14:21:17 +08:00
parent c7daaf95fc
commit 9890bb7501
1 changed files with 10 additions and 0 deletions
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10
src/base/bittorrent/session.cpp
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@ -3061,6 +3061,11 @@ void Session::applyOSMemoryPriority() const
if (!setProcessInformation) // only available on Windows >= 8
return;
using SETTHREADINFORMATION = BOOL (WINAPI *)(HANDLE, THREAD_INFORMATION_CLASS, LPVOID, DWORD);
const auto setThreadInformation = Utils::Misc::loadWinAPI<SETTHREADINFORMATION>("Kernel32.dll", "SetThreadInformation");
if (!setThreadInformation) // only available on Windows >= 8
return;
#if (_WIN32_WINNT < _WIN32_WINNT_WIN8)
// this dummy struct is required to compile successfully when targeting older Windows version
struct MEMORY_PRIORITY_INFORMATION
@ -3097,6 +3102,11 @@ void Session::applyOSMemoryPriority() const
break;
}
setProcessInformation(::GetCurrentProcess(), ProcessMemoryPriority, &prioInfo, sizeof(prioInfo));
// To avoid thrashing/sluggishness of the app, set "main event loop" thread to normal memory priority
// which is higher/equal than other threads
prioInfo.MemoryPriority = MEMORY_PRIORITY_NORMAL;
setThreadInformation(::GetCurrentThread(), ThreadMemoryPriority, &prioInfo, sizeof(prioInfo));
}
#endif