1 files changed, 69 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/miscellaneous/InterlockedExchange/test1/test.cpp b/src/pal/tests/palsuite/miscellaneous/InterlockedExchange/test1/test.cpp
new file mode 100644
index 0000000000..517fca1792
--- /dev/null
+++ b/src/pal/tests/palsuite/miscellaneous/InterlockedExchange/test1/test.cpp
@@ -0,0 +1,69 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+** Source: test.c
+**
+** Purpose: InterlockedExchange() function
+**
+**
+**=========================================================*/
+
+/* This test is FINISHED.  Note:  The biggest feature of this function is that
+   it locks the value before it increments it -- in order to make it so only 
+   one thread can access it.  But, I really don't have a great test to make 
+   sure it's thread safe.  Any ideas?
+*/
+
+#include <palsuite.h>
+
+#define START_VALUE 0
+
+int __cdecl main(int argc, char *argv[]) {
+
+    int TheValue = START_VALUE;
+    int NewValue = 5;
+    int TheReturn;
+
+    /*
+     * Initialize the PAL and return FAILURE if this fails
+     */
+
+    if(0 != (PAL_Initialize(argc, argv)))
+    {
+        return FAIL;
+    }
+
+    TheReturn = InterlockedExchange(&TheValue,NewValue);
+  
+    /* Compare the exchanged value with the value we exchanged it with.  Should
+       be the same.
+    */  
+    if(TheValue != NewValue) 
+    {
+        Fail("ERROR: The value which was exchanged should now be %d, but "
+             "instead it is %d.",NewValue,TheValue);    
+    }
+  
+    /* Check to make sure it returns the origional number which 'TheValue' was 
+       set to. 
+    */
+  
+    if(TheReturn != START_VALUE) 
+    {
+        Fail("ERROR: The value returned should be the value before the "
+             "exchange happened, which was %d, but %d was returned.",
+             START_VALUE,TheReturn);
+    }
+
+    
+    PAL_Terminate();
+    return PASS; 
+} 
+
+
+
+
+