1 files changed, 55 insertions, 0 deletions
diff --git a/src/libs/utils/async.cpp b/src/libs/utils/async.cpp
new file mode 100644
index 0000000000..33487db73b
--- /dev/null
+++ b/src/libs/utils/async.cpp
@@ -0,0 +1,55 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "async.h"
+
+namespace Utils {
+
+static int s_maxThreadCount = INT_MAX;
+
+class AsyncThreadPool : public QThreadPool
+{
+public:
+    AsyncThreadPool(QThread::Priority priority) {
+        setThreadPriority(priority);
+        setMaxThreadCount(s_maxThreadCount);
+        moveToThread(qApp->thread());
+    }
+};
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 3, 0)
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_idle,         (QThread::IdlePriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_lowest,       (QThread::LowestPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_low,          (QThread::LowPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_normal,       (QThread::NormalPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_high,         (QThread::HighPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_highest,      (QThread::HighestPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_timeCritical, (QThread::TimeCriticalPriority));
+Q_GLOBAL_STATIC_WITH_ARGS(AsyncThreadPool, s_inherit,      (QThread::InheritPriority));
+#else
+Q_GLOBAL_STATIC(AsyncThreadPool, s_idle,         QThread::IdlePriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_lowest,       QThread::LowestPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_low,          QThread::LowPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_normal,       QThread::NormalPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_high,         QThread::HighPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_highest,      QThread::HighestPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_timeCritical, QThread::TimeCriticalPriority);
+Q_GLOBAL_STATIC(AsyncThreadPool, s_inherit,      QThread::InheritPriority);
+#endif
+
+QThreadPool *asyncThreadPool(QThread::Priority priority)
+{
+    switch (priority) {
+    case QThread::IdlePriority         : return s_idle;
+    case QThread::LowestPriority       : return s_lowest;
+    case QThread::LowPriority          : return s_low;
+    case QThread::NormalPriority       : return s_normal;
+    case QThread::HighPriority         : return s_high;
+    case QThread::HighestPriority      : return s_highest;
+    case QThread::TimeCriticalPriority : return s_timeCritical;
+    case QThread::InheritPriority      : return s_inherit;
+    }
+    return nullptr;
+}
+
+} // namespace Utils