1 files changed, 77 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/miscellaneous/InterlockedDecrement64/test1/test.cpp b/src/pal/tests/palsuite/miscellaneous/InterlockedDecrement64/test1/test.cpp
new file mode 100644
index 0000000000..326587d9a1
--- /dev/null
+++ b/src/pal/tests/palsuite/miscellaneous/InterlockedDecrement64/test1/test.cpp
@@ -0,0 +1,77 @@
+// 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: InterlockedDecrement64() 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>
+
+int __cdecl main(int argc, char *argv[]) 
+{
+    LONGLONG TheValue = 0;
+    LONGLONG TheReturn;
+  
+    /*
+     * Initialize the PAL and return FAILURE if this fails
+     */
+
+    if(0 != (PAL_Initialize(argc, argv)))
+    {
+        return FAIL;
+    }
+
+/*
+**  Run only on 64 bit platforms
+*/
+#if defined(BIT64) && defined(PLATFORM_UNIX)
+    /* Compare START_VALUE with BaseVariableToManipulate, they're equal, 
+       so exchange 
+    */
+    InterlockedDecrement64(&TheValue);
+    TheReturn = InterlockedDecrement64(&TheValue);
+
+    /* Decremented twice, it should be -2 now */
+    if(TheValue != -2) 
+    {
+#ifdef PLATFORM_UNIX
+        Fail("ERROR: After being decremented twice, the value should be -2, "
+             "but it is really %ll.",TheValue);
+#else
+        Fail("ERROR: After being decremented twice, the value should be -2, "
+             "but it is really %I64.",TheValue);
+#endif
+    }
+  
+    /* Check to make sure it returns itself */
+    if(TheReturn != TheValue) 
+    {
+#ifdef PLATFORM_UNIX
+        Fail("ERROR: The function should have returned the new value of %d "
+             "but instead returned %ll.",TheValue,TheReturn);    
+#else
+        Fail("ERROR: After being decremented twice, the value should be -2, "
+             "but it is really %I64.",TheValue);
+#endif
+    }
+#endif  //defined(BIT64) && defined(PLATFORM_UNIX)
+    PAL_Terminate();
+    return PASS; 
+} 
+
+
+
+
+