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diff --git a/src/VBox/Runtime/testcase/tstRTR0Timer.h b/src/VBox/Runtime/testcase/tstRTR0Timer.h
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+/* $Id: tstRTR0Timer.h $ */
+/** @file
+ * IPRT R0 Testcase - Timers, common header.
+ */
+
+/*
+ * Copyright (C) 2009-2020 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.
+ */
+
+#ifndef IPRT_INCLUDED_SRC_testcase_tstRTR0Timer_h
+#define IPRT_INCLUDED_SRC_testcase_tstRTR0Timer_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include "tstRTR0CommonReq.h"
+
+#ifdef IN_RING0
+RT_C_DECLS_BEGIN
+DECLEXPORT(int) TSTRTR0TimerSrvReqHandler(PSUPDRVSESSION pSession, uint32_t uOperation,
+ uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr);
+RT_C_DECLS_END
+#endif
+
+typedef enum TSTRTR0TIMER
+{
+ TSTRTR0TIMER_ONE_SHOT_BASIC = RTTSTR0REQ_FIRST_USER,
+ TSTRTR0TIMER_ONE_SHOT_BASIC_HIRES,
+ TSTRTR0TIMER_PERIODIC_BASIC,
+ TSTRTR0TIMER_PERIODIC_BASIC_HIRES,
+ TSTRTR0TIMER_ONE_SHOT_RESTART,
+ TSTRTR0TIMER_ONE_SHOT_RESTART_HIRES,
+ TSTRTR0TIMER_ONE_SHOT_DESTROY,
+ TSTRTR0TIMER_ONE_SHOT_DESTROY_HIRES,
+ TSTRTR0TIMER_ONE_SHOT_SPECIFIC,
+ TSTRTR0TIMER_ONE_SHOT_SPECIFIC_HIRES,
+ TSTRTR0TIMER_PERIODIC_CSSD_LOOPS,
+ TSTRTR0TIMER_PERIODIC_CSSD_LOOPS_HIRES,
+ TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL,
+ TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL_HIRES,
+ TSTRTR0TIMER_PERIODIC_SPECIFIC,
+ TSTRTR0TIMER_PERIODIC_SPECIFIC_HIRES,
+ TSTRTR0TIMER_PERIODIC_OMNI,
+ TSTRTR0TIMER_PERIODIC_OMNI_HIRES,
+ TSTRTR0TIMER_LATENCY_OMNI,
+ TSTRTR0TIMER_LATENCY_OMNI_HIRES,
+ TSTRTR0TIMER_END
+} TSTRTR0TIMER;
+
+/** Check if the operation is for a high resolution timer or not. */
+#define TSTRTR0TIMER_IS_HIRES(uOperation) \
+ ( (uOperation) == TSTRTR0TIMER_ONE_SHOT_BASIC_HIRES \
+ || (uOperation) == TSTRTR0TIMER_ONE_SHOT_RESTART_HIRES \
+ || (uOperation) == TSTRTR0TIMER_ONE_SHOT_DESTROY_HIRES \
+ || (uOperation) == TSTRTR0TIMER_ONE_SHOT_SPECIFIC_HIRES \
+ || (uOperation) == TSTRTR0TIMER_PERIODIC_BASIC_HIRES \
+ || (uOperation) == TSTRTR0TIMER_PERIODIC_CSSD_LOOPS_HIRES \
+ || (uOperation) == TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL_HIRES \
+ || (uOperation) == TSTRTR0TIMER_PERIODIC_SPECIFIC_HIRES \
+ || (uOperation) == TSTRTR0TIMER_PERIODIC_OMNI_HIRES \
+ || (uOperation) == TSTRTR0TIMER_LATENCY_OMNI_HIRES \
+ )
+
+#endif /* !IPRT_INCLUDED_SRC_testcase_tstRTR0Timer_h */