1 files changed, 125 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/os2/mp-os2.cpp b/src/VBox/Runtime/r3/os2/mp-os2.cpp
new file mode 100644
index 00000000..64ae06a8
--- /dev/null
+++ b/src/VBox/Runtime/r3/os2/mp-os2.cpp
@@ -0,0 +1,125 @@
+/* $Id: mp-os2.cpp $ */
+/** @file
+ * IPRT - Multiprocessor, OS/2.
+ */
+
+/*
+ * 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                                                                                                                 *
+*********************************************************************************************************************************/
+#define INCL_BASE
+#define INCL_ERRORS
+#include <os2.h>
+#undef RT_MAX
+
+#include <iprt/mp.h>
+#include <iprt/cpuset.h>
+#include <iprt/assert.h>
+
+/** @todo RTMpCpuId() */
+
+RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu)
+{
+    return idCpu < RTCPUSET_MAX_CPUS ? (int) idCpu : -1;
+}
+
+
+RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu)
+{
+    return (unsigned)iCpu < RTCPUSET_MAX_CPUS ? iCpu : NIL_RTCPUID;
+}
+
+
+RTDECL(RTCPUID) RTMpGetMaxCpuId(void)
+{
+    return RTCPUSET_MAX_CPUS;
+}
+
+
+RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu)
+{
+    RTCPUSET Set;
+    return RTCpuSetIsMember(RTMpGetSet(&Set), idCpu);
+}
+
+
+RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet)
+{
+    RTCPUID idCpu = RTMpGetCount();
+    RTCpuSetEmpty(pSet);
+    while (idCpu-- > 0)
+        RTCpuSetAdd(pSet, idCpu);
+    return pSet;
+}
+
+
+RTDECL(RTCPUID) RTMpGetCount(void)
+{
+    ULONG cCpus = 1;
+    int rc = DosQuerySysInfo(QSV_NUMPROCESSORS, QSV_NUMPROCESSORS, &cCpus, sizeof(cCpus));
+    if (rc || !cCpus)
+        cCpus = 1;
+    return cCpus;
+}
+
+
+RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu)
+{
+    RTCPUSET Set;
+    return RTCpuSetIsMember(RTMpGetOnlineSet(&Set), idCpu);
+}
+
+
+RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet)
+{
+    union
+    {
+        uint64_t u64;
+        MPAFFINITY mpaff;
+    } u;
+
+    int rc = DosQueryThreadAffinity(AFNTY_SYSTEM, &u.mpaff);
+    if (rc)
+        u.u64 = 1;
+    return RTCpuSetFromU64(pSet, u.u64);
+}
+
+
+RTDECL(RTCPUID) RTMpGetOnlineCount(void)
+{
+    RTCPUSET Set;
+    RTMpGetOnlineSet(&Set);
+    return RTCpuSetCount(&Set);
+}
+