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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/ValidationKit/snippets/time-1.c
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/ValidationKit/snippets/time-1.c')
-rw-r--r--src/VBox/ValidationKit/snippets/time-1.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/snippets/time-1.c b/src/VBox/ValidationKit/snippets/time-1.c
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+++ b/src/VBox/ValidationKit/snippets/time-1.c
@@ -0,0 +1,123 @@
+/* $Id: time-1.c $ */
+/** @file
+ * Query the time and check that it always goes forward, POSIX only.
+ */
+
+/*
+ * Copyright (C) 2011-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <stdio.h>
+#include <time.h>
+#include <sys/time.h>
+
+
+
+int main()
+{
+ unsigned cErrors = 0;
+#ifdef USE_CLOCK_MONOTONIC
+ struct timespec aTs[2];
+ struct timespec *pCur = &aTs[0];
+ struct timespec *pPrev = &aTs[1];
+ struct timespec *pTmp;
+#else
+ struct timeval aTv[2];
+ struct timeval *pCur = &aTv[0];
+ struct timeval *pPrev = &aTv[1];
+ struct timeval *pTmp;
+#endif
+
+#ifdef USE_CLOCK_MONOTONIC
+ clock_gettime(CLOCK_MONOTONIC, pPrev);
+#else
+ gettimeofday(pPrev, NULL);
+#endif
+ for (;;)
+ {
+#ifdef USE_CLOCK_MONOTONIC
+ clock_gettime(CLOCK_MONOTONIC, pCur);
+#else
+ gettimeofday(pCur, NULL);
+#endif
+
+ if ( pCur->tv_sec == pPrev->tv_sec
+#ifdef USE_CLOCK_MONOTONIC
+ && pCur->tv_nsec < pPrev->tv_nsec
+#else
+ && pCur->tv_usec < pPrev->tv_usec
+#endif
+ )
+ {
+#ifdef USE_CLOCK_MONOTONIC
+ printf("tv_nsec in the past: %ld.%09u < %ld.%09u - %u nsec\n",
+ (long)pCur->tv_sec, (unsigned)pCur->tv_nsec,
+ (long)pPrev->tv_sec, (unsigned)pPrev->tv_nsec,
+ (unsigned)pPrev->tv_nsec - (unsigned)pCur->tv_nsec);
+#else
+ printf("tv_usec in the past: %ld.%06u < %ld.%06u - %u usec\n",
+ (long)pCur->tv_sec, (unsigned)pCur->tv_usec,
+ (long)pPrev->tv_sec, (unsigned)pPrev->tv_usec,
+ (unsigned)pPrev->tv_usec - (unsigned)pCur->tv_usec);
+#endif
+ cErrors++;
+ if (cErrors > 1000)
+ break;
+ }
+ else if (pCur->tv_sec < pPrev->tv_sec)
+ {
+#ifdef USE_CLOCK_MONOTONIC
+ printf("tv_sec in the past: %ld.%09u < %ld.%09u\n",
+ (long)pCur->tv_sec, (unsigned)pCur->tv_nsec,
+ (long)pPrev->tv_sec, (unsigned)pPrev->tv_nsec);
+#else
+ printf("tv_sec in the past: %ld.%06u < %ld.%06u\n",
+ (long)pCur->tv_sec, (unsigned)pCur->tv_usec,
+ (long)pPrev->tv_sec, (unsigned)pPrev->tv_usec);
+#endif
+ cErrors++;
+ if (cErrors > 1000)
+ break;
+ }
+ else
+ {
+ /* swap */
+ pTmp = pPrev;
+ pPrev = pCur;
+ pCur = pTmp;
+ }
+ }
+
+ return 1;
+}