1 files changed, 105 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/linux/thread-affinity-linux.cpp b/src/VBox/Runtime/r3/linux/thread-affinity-linux.cpp
new file mode 100644
index 00000000..8eb51488
--- /dev/null
+++ b/src/VBox/Runtime/r3/linux/thread-affinity-linux.cpp
@@ -0,0 +1,105 @@
+/* $Id: thread-affinity-linux.cpp $ */
+/** @file
+ * IPRT - Thread Affinity, Linux ring-3 implementation.
+ */
+
+/*
+ * Copyright (C) 2011-2022 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                                                                                                                 *
+*********************************************************************************************************************************/
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+#include <features.h>
+#if __GLIBC_PREREQ(2,4)
+
+#include <sched.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include <iprt/thread.h>
+#include "internal/iprt.h"
+
+#include <iprt/assert.h>
+#include <iprt/cpuset.h>
+#include <iprt/err.h>
+#include <iprt/mp.h>
+
+
+
+RTR3DECL(int) RTThreadSetAffinity(PCRTCPUSET pCpuSet)
+{
+    /* convert */
+    cpu_set_t LnxCpuSet;
+    CPU_ZERO(&LnxCpuSet);
+    if (!pCpuSet)
+        for (unsigned iCpu = 0; iCpu < CPU_SETSIZE; iCpu++)
+            CPU_SET(iCpu, &LnxCpuSet);
+    else
+        for (unsigned iCpu = 0; iCpu < RT_MIN(CPU_SETSIZE, RTCPUSET_MAX_CPUS); iCpu++)
+            if (RTCpuSetIsMemberByIndex(pCpuSet, iCpu))
+                CPU_SET(iCpu, &LnxCpuSet);
+
+    int rc = pthread_setaffinity_np(pthread_self(), sizeof(LnxCpuSet), &LnxCpuSet);
+    if (!rc)
+        return VINF_SUCCESS;
+    rc = errno;
+    if (rc == ENOENT)
+        return VERR_CPU_NOT_FOUND;
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTR3DECL(int) RTThreadGetAffinity(PRTCPUSET pCpuSet)
+{
+    cpu_set_t LnxCpuSet;
+    int rc = pthread_getaffinity_np(pthread_self(), sizeof(LnxCpuSet), &LnxCpuSet);
+    if (rc != 0)
+        return RTErrConvertFromErrno(errno);
+
+    /* convert */
+    RTCpuSetEmpty(pCpuSet);
+    for (unsigned iCpu = 0; iCpu < RT_MIN(CPU_SETSIZE, RTCPUSET_MAX_CPUS); iCpu++)
+        if (CPU_ISSET(iCpu, &LnxCpuSet))
+            RTCpuSetAddByIndex(pCpuSet, iCpu);
+
+    return VINF_SUCCESS;
+}
+
+#else
+# include "../../generic/RTThreadGetAffinity-stub-generic.cpp"
+# include "../../generic/RTThreadSetAffinity-stub-generic.cpp"
+#endif
+