1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Runtime/include/internal/mp.h b/src/VBox/Runtime/include/internal/mp.h
new file mode 100644
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+++ b/src/VBox/Runtime/include/internal/mp.h
@@ -0,0 +1,95 @@
+/* $Id: mp.h $ */
+/** @file
+ * IPRT - Internal RTMp header
+ */
+
+/*
+ * Copyright (C) 2016-2023 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
+ */
+
+#ifndef IPRT_INCLUDED_INTERNAL_mp_h
+#define IPRT_INCLUDED_INTERNAL_mp_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/assert.h>
+#include <iprt/mp.h>
+
+RT_C_DECLS_BEGIN
+
+
+#ifdef RT_OS_WINDOWS
+/** @todo Return the processor group + number instead.
+ * Unfortunately, DTrace and HM makes the impossible for the time being as it
+ * seems to be making the stupid assumption that idCpu == iCpuSet. */
+#if 0
+# define IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
+#endif
+
+# ifdef IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER
+
+/** @def RTMPCPUID_FROM_GROUP_AND_NUMBER
+ * Creates the RTCPUID value.
+ *
+ * @remarks We Increment a_uGroup by 1 to make sure the ID is never the same as
+ *          the CPU set index.
+ *
+ * @remarks We put the group in the top to make it easy to construct the MAX ID.
+ *          For that reason we also just use 8 bits for the processor number, as
+ *          it keeps the range small.
+ */
+#  define RTMPCPUID_FROM_GROUP_AND_NUMBER(a_uGroup, a_uGroupMember)  \
+    ( (uint8_t)(a_uGroupMember) | (((uint32_t)(a_uGroup) + 1) << 8) )
+
+/** Extracts the group number from a RTCPUID value.  */
+DECLINLINE(uint16_t) rtMpCpuIdGetGroup(RTCPUID idCpu)
+{
+    Assert(idCpu != NIL_RTCPUID);
+    uint16_t idxGroup = idCpu >> 8;
+    Assert(idxGroup != 0);
+    return idxGroup - 1;
+}
+
+/** Extracts the group member number from a RTCPUID value.   */
+DECLINLINE(uint8_t) rtMpCpuIdGetGroupMember(RTCPUID idCpu)
+{
+    Assert(idCpu != NIL_RTCPUID);
+    return (uint8_t)idCpu;
+}
+
+# endif /* IPRT_WITH_RTCPUID_AS_GROUP_AND_NUMBER */
+#endif /* RT_OS_WINDOWS */
+
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_INTERNAL_mp_h */
+