1 | /* $Id: mp-r0drv-darwin.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Multiprocessor, Ring-0 Driver, Darwin.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2008 Sun Microsystems, Inc.
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | *
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26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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28 | * additional information or have any questions.
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29 | */
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30 |
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31 |
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32 | /*******************************************************************************
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33 | * Header Files *
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34 | *******************************************************************************/
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35 | #include "the-darwin-kernel.h"
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36 |
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37 | #include <iprt/mp.h>
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38 | #include <iprt/err.h>
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39 | #include <iprt/asm.h>
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40 | #include "r0drv/mp-r0drv.h"
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41 |
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42 |
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43 | RTDECL(RTCPUID) RTMpCpuId(void)
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44 | {
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45 | return cpu_number();
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46 | }
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47 |
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48 |
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49 | /**
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50 | * Wrapper between the native darwin per-cpu callback and PFNRTWORKER
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51 | * for the RTMpOnAll API.
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52 | *
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53 | * @param pvArg Pointer to the RTMPARGS package.
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54 | */
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55 | static void rtmpOnAllDarwinWrapper(void *pvArg)
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56 | {
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57 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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58 | pArgs->pfnWorker(cpu_number(), pArgs->pvUser1, pArgs->pvUser2);
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59 | }
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60 |
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61 |
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62 | RTDECL(int) RTMpOnAll(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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63 | {
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64 | RTMPARGS Args;
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65 | Args.pfnWorker = pfnWorker;
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66 | Args.pvUser1 = pvUser1;
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67 | Args.pvUser2 = pvUser2;
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68 | Args.idCpu = NIL_RTCPUID;
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69 | Args.cHits = 0;
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70 | mp_rendezvous(NULL, rtmpOnAllDarwinWrapper, NULL, &Args);
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71 | return VINF_SUCCESS;
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72 | }
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73 |
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74 |
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75 | /**
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76 | * Wrapper between the native darwin per-cpu callback and PFNRTWORKER
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77 | * for the RTMpOnOthers API.
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78 | *
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79 | * @param pvArg Pointer to the RTMPARGS package.
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80 | */
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81 | static void rtmpOnOthersDarwinWrapper(void *pvArg)
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82 | {
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83 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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84 | RTCPUID idCpu = cpu_number();
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85 | if (pArgs->idCpu != idCpu)
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86 | pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2);
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87 | }
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88 |
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89 |
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90 | RTDECL(int) RTMpOnOthers(PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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91 | {
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92 | int rc;
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93 | RTMPARGS Args;
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94 | Args.pfnWorker = pfnWorker;
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95 | Args.pvUser1 = pvUser1;
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96 | Args.pvUser2 = pvUser2;
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97 | Args.idCpu = NIL_RTCPUID;
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98 | Args.cHits = 0;
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99 | mp_rendezvous(NULL, rtmpOnOthersDarwinWrapper, NULL, &Args);
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100 | return VINF_SUCCESS;
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101 | }
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102 |
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103 |
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104 | /**
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105 | * Wrapper between the native darwin per-cpu callback and PFNRTWORKER
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106 | * for the RTMpOnSpecific API.
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107 | *
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108 | * @param pvArg Pointer to the RTMPARGS package.
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109 | */
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110 | static void rtmpOnSpecificDarwinWrapper(void *pvArg)
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111 | {
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112 | PRTMPARGS pArgs = (PRTMPARGS)pvArg;
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113 | RTCPUID idCpu = cpu_number();
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114 | if (pArgs->idCpu == idCpu)
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115 | {
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116 | pArgs->pfnWorker(idCpu, pArgs->pvUser1, pArgs->pvUser2);
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117 | ASMAtomicIncU32(&pArgs->cHits);
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118 | }
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119 | }
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120 |
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121 |
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122 | RTDECL(int) RTMpOnSpecific(RTCPUID idCpu, PFNRTMPWORKER pfnWorker, void *pvUser1, void *pvUser2)
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123 | {
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124 | int rc;
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125 | RTMPARGS Args;
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126 | Args.pfnWorker = pfnWorker;
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127 | Args.pvUser1 = pvUser1;
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128 | Args.pvUser2 = pvUser2;
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129 | Args.idCpu = idCpu;
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130 | Args.cHits = 0;
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131 | mp_rendezvous(NULL, rtmpOnSpecificDarwinWrapper, NULL, &Args);
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132 | return Args.cHits == 1
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133 | ? VINF_SUCCESS
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134 | : VERR_CPU_NOT_FOUND;
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135 | }
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136 |
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