RunExtensions: Support specifying thread stack size

...with runAsync().

The stack size cannot be changed after starting a thread, so specifying
the stack size with a pool does not make sense. However, starting
with Qt 5.10 a stack size can be specified for the whole thread pool, if
needed.

Change-Id: I09eded606321388c779f762b77de6223081609fe
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/auto/runextensions/tst_runextensions.cpp b/tests/auto/runextensions/tst_runextensions.cpp
index acad21b15d..fd0c6609d8 100644
--- a/tests/auto/runextensions/tst_runextensions.cpp
+++ b/tests/auto/runextensions/tst_runextensions.cpp
@@ -42,6 +42,8 @@ private slots:
     void moveOnlyType();
 #endif
     void threadPriority();
+    void threadSize();
+    void threadSizeAndPriority();
     void runAsyncNoFutureInterface();
     void crefFunction();
     void onResultReady();
@@ -399,6 +401,19 @@ void tst_RunExtensions::threadPriority()
              QList<int>({0, 2, 1}));
 }
 
+void tst_RunExtensions::threadSize()
+{
+    QCOMPARE(Utils::runAsync(Utils::StackSizeInBytes(1024 * 1024), report3).results(),
+             QList<int>({0, 2, 1}));
+}
+
+void tst_RunExtensions::threadSizeAndPriority()
+{
+    QCOMPARE(Utils::runAsync(Utils::StackSizeInBytes(1024 * 1024), QThread::LowestPriority, report3)
+                 .results(),
+             QList<int>({0, 2, 1}));
+}
+
 void tst_RunExtensions::runAsyncNoFutureInterface()
 {
     // free function pointer