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Avoid integer overflow when calculating working set size

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PR #16700.
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Vladimir Golovnev 2022-03-22 16:15:21 +03:00 • committed by GitHub
commit c062f86bac
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src/app/application.cpp
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@ -798,7 +798,7 @@ void Application::shutdownCleanup(QSessionManager &manager)
#ifdef Q_OS_WIN #ifdef Q_OS_WIN
void Application::applyMemoryWorkingSetLimit() void Application::applyMemoryWorkingSetLimit()
{ {
const int UNIT_SIZE = 1024 * 1024; // MiB const SIZE_T UNIT_SIZE = 1024 * 1024; // MiB
const SIZE_T maxSize = memoryWorkingSetLimit() * UNIT_SIZE; const SIZE_T maxSize = memoryWorkingSetLimit() * UNIT_SIZE;
const SIZE_T minSize = std::min<SIZE_T>((64 * UNIT_SIZE), (maxSize / 2)); const SIZE_T minSize = std::min<SIZE_T>((64 * UNIT_SIZE), (maxSize / 2));
if (!::SetProcessWorkingSetSizeEx(::GetCurrentProcess(), minSize, maxSize, QUOTA_LIMITS_HARDWS_MAX_ENABLE)) if (!::SetProcessWorkingSetSizeEx(::GetCurrentProcess(), minSize, maxSize, QUOTA_LIMITS_HARDWS_MAX_ENABLE))