1 files changed, 92 insertions, 0 deletions
diff --git a/src/VBox/Runtime/generic/semfastmutex-generic.cpp b/src/VBox/Runtime/generic/semfastmutex-generic.cpp
new file mode 100644
index 00000000..28366ab5
--- /dev/null
+++ b/src/VBox/Runtime/generic/semfastmutex-generic.cpp
@@ -0,0 +1,92 @@
+/* $Id: semfastmutex-generic.cpp $ */
+/** @file
+ * IPRT - Fast Mutex, Generic.
+ */
+
+/*
+ * Copyright (C) 2006-2023 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 <iprt/semaphore.h>
+#include "internal/iprt.h"
+
+#include <iprt/alloc.h>
+#include <iprt/errcore.h>
+#include <iprt/critsect.h>
+
+
+
+RTDECL(int) RTSemFastMutexCreate(PRTSEMFASTMUTEX phFastMtx)
+{
+    PRTCRITSECT pCritSect = (PRTCRITSECT)RTMemAlloc(sizeof(RTCRITSECT));
+    if (!pCritSect)
+        return VERR_NO_MEMORY;
+
+    int rc = RTCritSectInitEx(pCritSect, RTCRITSECT_FLAGS_NO_NESTING,
+                              NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
+    if (RT_SUCCESS(rc))
+        *phFastMtx = (RTSEMFASTMUTEX)pCritSect;
+    else
+        RTMemFree(pCritSect);
+    return rc;
+}
+RT_EXPORT_SYMBOL(RTSemFastMutexCreate);
+
+
+RTDECL(int) RTSemFastMutexDestroy(RTSEMFASTMUTEX hFastMtx)
+{
+    if (hFastMtx == NIL_RTSEMFASTMUTEX)
+        return VERR_INVALID_PARAMETER;
+    PRTCRITSECT pCritSect = (PRTCRITSECT)hFastMtx;
+    int rc = RTCritSectDelete(pCritSect);
+    if (RT_SUCCESS(rc))
+        RTMemFree(pCritSect);
+    return rc;
+}
+RT_EXPORT_SYMBOL(RTSemFastMutexDestroy);
+
+
+RTDECL(int) RTSemFastMutexRequest(RTSEMFASTMUTEX hFastMtx)
+{
+    return RTCritSectEnter((PRTCRITSECT)hFastMtx);
+}
+RT_EXPORT_SYMBOL(RTSemFastMutexRequest);
+
+
+RTDECL(int) RTSemFastMutexRelease(RTSEMFASTMUTEX hFastMtx)
+{
+    return RTCritSectLeave((PRTCRITSECT)hFastMtx);
+}
+RT_EXPORT_SYMBOL(RTSemFastMutexRelease);
+