1 files changed, 115 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/src_corelib_thread_qmutex.cpp b/doc/codesnippets/doc/src/snippets/code/src_corelib_thread_qmutex.cpp
new file mode 100644
index 000000000..25068b801
--- /dev/null
+++ b/doc/codesnippets/doc/src/snippets/code/src_corelib_thread_qmutex.cpp
@@ -0,0 +1,115 @@
+//! [0]
+number = 6
+
+def method1():
+    number *= 5
+    number /= 4
+
+def method2():
+    number *= 3
+    number /= 2
+//! [0]
+
+
+//! [1]
+# method1()
+number *= 5        # number is now 30
+number /= 4        # number is now 7
+
+# method2()
+number *= 3        # number is now 21
+number /= 2        # number is now 10
+//! [1]
+
+
+//! [2]
+# Thread 1 calls method1()
+number *= 5        # number is now 30
+
+# Thread 2 calls method2().
+#
+# Most likely Thread 1 has been put to sleep by the operating
+# system to allow Thread 2 to run.
+number *= 3        # number is now 90
+number /= 2        # number is now 45
+
+# Thread 1 finishes executing.
+number /= 4        # number is now 11, instead of 10
+//! [2]
+
+
+//! [3]
+mutex = QMutex()
+number = 6
+
+def method1():
+    mutex.lock()
+    number *= 5
+    number /= 4
+    mutex.unlock()
+
+def method2():
+    mutex.lock()
+    number *= 3
+    number /= 2
+    mutex.unlock()
+//! [3]
+
+
+//! [4]
+def complexFunction(flag):
+    mutex.lock()
+
+    retVal = 0
+
+    if flag == 0 or flag == 1:
+        mutex.unlock()
+        return moreComplexFunction(flag)
+    elif flag == 2:
+        status = anotherFunction()
+        if status < 0:
+            mutex.unlock()
+            return -2
+        retVal = status + flag
+    else:
+        if flag > 10:
+            mutex.unlock()
+            return -1
+
+    mutex.unlock()
+    return retVal
+//! [4]
+
+
+//! [5]
+def complexFunction(flag):
+    locker = QMutexLocker(mutex)
+
+    retVal = 0
+
+    if flag == 0 or flag == 1:
+        return moreComplexFunction(flag)
+    elif flag == 2:
+            status = anotherFunction()
+            if status < 0:
+                return -2
+            retVal = status + flag
+    else:
+        if flag > 10:
+            return -1
+
+    return retVal
+//! [5]
+
+
+//! [6]
+class SignalWaiter:
+    def __init__(mutex):
+        self.locker = mutex
+
+    def waitForSignal():
+        # ...
+        while not signalled:
+            waitCondition.wait(self.locker.mutex())
+        # ...
+//! [6]