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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/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp
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/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp')
-rw-r--r--src/VBox/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp104
1 files changed, 104 insertions, 0 deletions
diff --git a/src/VBox/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp b/src/VBox/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp
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+++ b/src/VBox/Runtime/os2/rtSemWaitOs2ConvertTimeout.cpp
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+/* $Id: rtSemWaitOs2ConvertTimeout.cpp $ */
+/** @file
+ * IPRT - RTSemEventMultiWait, implementation based on RTSemEventMultiWaitEx.
+ */
+
+/*
+ * Copyright (C) 2010-2023 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 "internal/iprt.h"
+#include <iprt/semaphore.h>
+#include <iprt/time.h>
+
+
+/*********************************************************************************************************************************
+* Defined Constants And Macros *
+*********************************************************************************************************************************/
+/** Too lazy to include the right OS/2 header, duplicating the define we
+ * need here. */
+#define MY_SEM_INDEFINITE_WAIT UINT32_MAX
+
+
+/**
+ * Converts the timeout to a millisecond value that can be fed to KernBlock.
+ *
+ * @returns Relative timeout in milliseconds.
+ * @param fFlags The semaphore wait flags.
+ * @param uTimeout The timeout value.
+ */
+uint32_t rtR0SemWaitOs2ConvertTimeout(uint32_t fFlags, uint64_t uTimeout)
+{
+ /*
+ * Simple & common cases.
+ */
+ if (fFlags & RTSEMWAIT_FLAGS_INDEFINITE)
+ return MY_SEM_INDEFINITE_WAIT;
+
+ if ( (fFlags & (RTSEMWAIT_FLAGS_MILLISECS | RTSEMWAIT_FLAGS_ABSOLUTE))
+ == RTSEMWAIT_FLAGS_MILLISECS)
+ {
+ if (uTimeout < UINT32_MAX)
+ return (uint32_t)uTimeout;
+ return MY_SEM_INDEFINITE_WAIT;
+ }
+
+ if (!uTimeout)
+ return 0;
+
+ if (uTimeout == UINT64_MAX)
+ return MY_SEM_INDEFINITE_WAIT;
+
+ /*
+ * For the more complicated cases (nano or/and abs), convert thru nano (lazy bird).
+ */
+ if (fFlags & RTSEMWAIT_FLAGS_MILLISECS)
+ {
+ if (uTimeout >= UINT64_MAX / RT_NS_1MS * RT_NS_1MS)
+ return MY_SEM_INDEFINITE_WAIT;
+ uTimeout = uTimeout * RT_NS_1MS;
+ }
+ if (fFlags & RTSEMWAIT_FLAGS_ABSOLUTE)
+ {
+ uint64_t u64Now = RTTimeSystemNanoTS();
+ if (u64Now >= uTimeout)
+ return 0;
+ uTimeout = uTimeout - u64Now;
+ }
+ uTimeout /= RT_NS_1MS;
+ if (uTimeout >= UINT32_MAX)
+ return MY_SEM_INDEFINITE_WAIT;
+ return (uint32_t)uTimeout;
+}
+