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-rw-r--r--src/VBox/Runtime/testcase/tstTime-4.cpp85
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diff --git a/src/VBox/Runtime/testcase/tstTime-4.cpp b/src/VBox/Runtime/testcase/tstTime-4.cpp
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+/* $Id: tstTime-4.cpp $ */
+/** @file
+ * IPRT Testcase - Simple RTTime vs. RTTimeSystem test.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <iprt/time.h>
+#include <iprt/stream.h>
+#include <iprt/initterm.h>
+#include <iprt/thread.h>
+#include <VBox/sup.h>
+
+
+
+int main()
+{
+ unsigned cErrors = 0;
+
+ RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
+ RTPrintf("tstTime-4: TESTING...\n");
+
+ /*
+ * Check that RTTimeSystemNanoTS doesn't go backwards and
+ * isn't too far from RTTimeNanoTS().
+ */
+ RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield(); /* warmup */
+ const uint64_t SysStartTS = RTTimeSystemNanoTS();
+ const uint64_t GipStartTS = RTTimeNanoTS();
+ uint64_t SysPrevTS, GipPrevTS;
+ do
+ {
+ SysPrevTS = RTTimeSystemNanoTS();
+ GipPrevTS = RTTimeNanoTS();
+ if (SysPrevTS < SysStartTS)
+ {
+ cErrors++;
+ RTPrintf("tstTime-4: Bad Sys time!\n");
+ }
+ if (GipPrevTS < GipStartTS)
+ {
+ cErrors++;
+ RTPrintf("tstTime-4: Bad Gip time!\n");
+ }
+ uint64_t Delta = GipPrevTS > SysPrevTS ? GipPrevTS - SysPrevTS :
+ SysPrevTS - GipPrevTS;
+ if (Delta > 100000000ULL /* 100 ms */ )
+ {
+ cErrors++;
+ RTPrintf("tstTime-4: Delta=%llu (GipPrevTS=%llu, SysPrevTS=%llu)!\n", Delta, GipPrevTS, SysPrevTS);
+ }
+
+ } while (SysPrevTS - SysStartTS < 2000000000 /* 2s */);
+
+
+ if (!cErrors)
+ RTPrintf("tstTime-4: SUCCESS\n");
+ else
+ RTPrintf("tstTime-4: FAILURE - %d errors\n", cErrors);
+ return !!cErrors;
+}
+