QThreadPool: let the started thread have the same name as the pool

If the pool has a name. This should make identifying threads belonging
to different pools easier in process-inspection tools.

Fixes: QTBUG-92004
Change-Id: Id2983978ad544ff79911fffd167225902efeb855
Reviewed-by: Samuel Gaist <samuel.gaist@idiap.ch>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/corelib/thread/qthreadpool.cpp b/src/corelib/thread/qthreadpool.cpp
index 911bf8a53a..0c95912bc4 100644
--- a/src/corelib/thread/qthreadpool.cpp
+++ b/src/corelib/thread/qthreadpool.cpp
@@ -257,9 +257,15 @@ bool QThreadPoolPrivate::tooManyThreadsActive() const
 */
 void QThreadPoolPrivate::startThread(QRunnable *runnable)
 {
+    Q_Q(QThreadPool);
     Q_ASSERT(runnable != nullptr);
     QScopedPointer<QThreadPoolThread> thread(new QThreadPoolThread(this));
-    thread->setObjectName(QLatin1String("Thread (pooled)"));
+    QString objectName;
+    if (QString myName = q->objectName(); !myName.isEmpty())
+        objectName = myName;
+    else
+        objectName = QLatin1String("Thread (pooled)");
+    thread->setObjectName(objectName);
     Q_ASSERT(!allThreads.contains(thread.data())); // if this assert hits, we have an ABA problem (deleted threads don't get removed here)
     allThreads.insert(thread.data());
     ++activeThreads;