Cooked up some basic RTMp for darwin.

git-svn-id: https://www.virtualbox.org/svn/vbox/trunk@10452 cfe28804-0f27-0410-a406-dd0f0b0b656f

1 files changed, 188 insertions, 0 deletions

diff --git a/src/VBox/Runtime/r3/darwin/mp-darwin.cpp b/src/VBox/Runtime/r3/darwin/mp-darwin.cpp
new file mode 100644
index 00000000000..094e5960742
--- /dev/null
+++ b/src/VBox/Runtime/r3/darwin/mp-darwin.cpp
@@ -0,0 +1,188 @@
+/* $Id$ */
+/** @file
+ * IPRT - Multiprocessor, Darwin.
+ */
+
+/*
+ * Copyright (C) 2006-2008 Sun Microsystems, Inc.
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
+ * Clara, CA 95054 USA or visit http://www.sun.com if you need
+ * additional information or have any questions.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#define LOG_GROUP RTLOGGROUP_SYSTEM
+#include <iprt/types.h>
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/sysctl.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <errno.h>
+
+#include <iprt/mp.h>
+#include <iprt/cpuset.h>
+#include <iprt/assert.h>
+#include <iprt/string.h>
+
+
+/**
+ * Internal worker that determins the max possible CPU count.
+ *
+ * @returns Max cpus.
+ */
+static RTCPUID rtMpDarwinMaxCpus(void)
+{
+    int aiMib[2];
+    aiMib[0] = CTL_HW;
+    aiMib[1] = HW_NCPU;
+    int cCpus = -1;
+    size_t cb = sizeof(cCpus);
+    int rc = sysctl(aiMib, ELEMENTS(aiMib), &cCpus, &cb, NULL, 0);
+    if (rc != -1 && cCpus >= 1)
+        return cCpus;
+    AssertFailed();
+    return 1;
+}
+
+
+/** @todo RTmpCpuId(). */
+
+RTDECL(int) RTMpCpuIdToSetIndex(RTCPUID idCpu)
+{
+    return idCpu < rtMpDarwinMaxCpus() ? idCpu : -1;
+}
+
+
+RTDECL(RTCPUID) RTMpCpuIdFromSetIndex(int iCpu)
+{
+    return (unsigned)iCpu < rtMpDarwinMaxCpus() ? iCpu : NIL_RTCPUID;
+}
+
+
+RTDECL(RTCPUID) RTMpGetMaxCpuId(void)
+{
+    return rtMpDarwinMaxCpus() - 1;
+}
+
+
+RTDECL(bool) RTMpIsCpuOnline(RTCPUID idCpu)
+{
+#if 1
+    return RTMpIsCpuPossible(idCpu);
+#else
+    /** @todo proper ring-3 support on darwin, see #3014. */
+#endif
+}
+
+
+RTDECL(bool) RTMpIsCpuPossible(RTCPUID idCpu)
+{
+    return idCpu != NIL_RTCPUID
+        && idCpu < rtMpDarwinMaxCpus();
+}
+
+
+RTDECL(PRTCPUSET) RTMpGetSet(PRTCPUSET pSet)
+{
+#if 0
+    RTCPUID cCpus = rtMpDarwinMaxCpus();
+    return RTCpuSetFromU64(RT_BIT_64(cCpus) - 1);
+
+#else
+    RTCpuSetEmpty(pSet);
+    RTCPUID cMax = rtMpDarwinMaxCpus();
+    for (RTCPUID idCpu = 0; idCpu < cMax; idCpu++)
+        if (RTMpIsCpuPossible(idCpu))
+            RTCpuSetAdd(pSet, idCpu);
+    return pSet;
+#endif
+}
+
+
+RTDECL(RTCPUID) RTMpGetCount(void)
+{
+    return rtMpDarwinMaxCpus();
+}
+
+
+RTDECL(PRTCPUSET) RTMpGetOnlineSet(PRTCPUSET pSet)
+{
+#if 1
+    return RTMpGetSet(pSet);
+#else
+    RTCpuSetEmpty(pSet);
+    RTCPUID cMax = rtMpDarwinMaxCpus();
+    for (RTCPUID idCpu = 0; idCpu < cMax; idCpu++)
+        if (RTMpIsCpuOnline(idCpu))
+            RTCpuSetAdd(pSet, idCpu);
+    return pSet;
+#endif
+}
+
+
+RTDECL(RTCPUID) RTMpGetOnlineCount(void)
+{
+    RTCPUSET Set;
+    RTMpGetOnlineSet(&Set);
+    return RTCpuSetCount(&Set);
+}
+
+
+RTDECL(uint32_t) RTMpGetCurFrequency(RTCPUID idCpu)
+{
+    /** @todo figure out how to get the current cpu speed on darwin. */
+    return 0;
+}
+
+
+RTDECL(uint32_t) RTMpGetMaxFrequency(RTCPUID idCpu)
+{
+    if (!RTMpIsCpuOnline(idCpu))
+        return 0;
+
+    /*
+     * Try the 'hw.cpufrequency_max' one.
+     */
+    uint64_t CpuFrequencyMax = 0;
+    size_t cb = sizeof(CpuFrequencyMax);
+    int rc = sysctlbyname("hw.cpufrequency_max", &CpuFrequencyMax, &cb, NULL, 0);
+    if (!rc)
+        return CpuFrequencyMax + 999999 / 1000000;
+
+    /*
+     * Use the depricated one.
+     */
+    int aiMib[2];
+    aiMib[0] = CTL_HW;
+    aiMib[1] = HW_CPU_FREQ;
+    int cCpus = -1;
+    cb = sizeof(cCpus);
+    rc = sysctl(aiMib, ELEMENTS(aiMib), &cCpus, &cb, NULL, 0);
+    if (rc != -1 && cCpus >= 1)
+        return cCpus;
+    AssertFailed();
+    return 0;
+}