1 | /* $Id: BandwidthControlImpl.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * VirtualBox COM class implementation
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | #define LOG_GROUP LOG_GROUP_MAIN_BANDWIDTHCONTROL
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29 | #include "BandwidthControlImpl.h"
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30 | #include "BandwidthGroupImpl.h"
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31 | #include "MachineImpl.h"
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32 | #include "Global.h"
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33 |
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34 | #include "AutoStateDep.h"
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35 | #include "AutoCaller.h"
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36 | #include "LoggingNew.h"
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37 |
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38 | #include <iprt/cpp/utils.h>
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39 | #include <VBox/com/array.h>
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40 | #include <VBox/param.h>
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41 | #include <algorithm>
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42 |
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43 | // defines
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44 | /////////////////////////////////////////////////////////////////////////////
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45 |
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46 | // constructor / destructor
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47 | /////////////////////////////////////////////////////////////////////////////
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48 | DEFINE_EMPTY_CTOR_DTOR(BandwidthControl)
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49 |
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50 |
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51 | HRESULT BandwidthControl::FinalConstruct()
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52 | {
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53 | return BaseFinalConstruct();
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54 | }
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55 |
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56 | void BandwidthControl::FinalRelease()
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57 | {
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58 | uninit();
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59 | BaseFinalRelease();
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60 | }
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61 |
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62 | // public initializer/uninitializer for internal purposes only
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63 | /////////////////////////////////////////////////////////////////////////////
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64 |
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65 | /**
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66 | * Initializes the bandwidth group object.
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67 | *
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68 | * @returns COM result indicator.
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69 | * @param aParent Pointer to our parent object.
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70 | */
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71 | HRESULT BandwidthControl::init(Machine *aParent)
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72 | {
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73 | LogFlowThisFunc(("aParent=%p\n", aParent));
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74 |
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75 | ComAssertRet(aParent, E_INVALIDARG);
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76 |
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77 | /* Enclose the state transition NotReady->InInit->Ready */
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78 | AutoInitSpan autoInitSpan(this);
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79 | AssertReturn(autoInitSpan.isOk(), E_FAIL);
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80 |
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81 | m = new Data(aParent);
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82 |
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83 | /* m->pPeer is left null */
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84 |
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85 | m->llBandwidthGroups.allocate();
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86 |
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87 | /* Confirm a successful initialization */
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88 | autoInitSpan.setSucceeded();
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89 |
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90 | return S_OK;
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91 | }
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92 |
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93 | /**
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94 | * Initializes the object given another object
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95 | * (a kind of copy constructor). This object shares data with
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96 | * the object passed as an argument.
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97 | *
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98 | * @note This object must be destroyed before the original object
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99 | * it shares data with is destroyed.
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100 | *
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101 | * @note Locks @a aThat object for writing if @a aReshare is @c true, or for
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102 | * reading if @a aReshare is false.
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103 | */
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104 | HRESULT BandwidthControl::init(Machine *aParent,
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105 | BandwidthControl *aThat)
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106 | {
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107 | LogFlowThisFunc(("aParent=%p, aThat=%p\n", aParent, aThat));
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108 |
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109 | ComAssertRet(aParent && aThat, E_INVALIDARG);
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110 |
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111 | /* Enclose the state transition NotReady->InInit->Ready */
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112 | AutoInitSpan autoInitSpan(this);
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113 | AssertReturn(autoInitSpan.isOk(), E_FAIL);
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114 |
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115 | m = new Data(aParent);
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116 |
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117 | /* sanity */
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118 | AutoCaller thatCaller(aThat);
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119 | AssertComRCReturnRC(thatCaller.rc());
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120 |
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121 | unconst(m->pPeer) = aThat;
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122 | AutoWriteLock thatLock(aThat COMMA_LOCKVAL_SRC_POS);
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123 |
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124 | /* create copies of all groups */
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125 | m->llBandwidthGroups.allocate();
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126 | BandwidthGroupList::const_iterator it;
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127 | for (it = aThat->m->llBandwidthGroups->begin();
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128 | it != aThat->m->llBandwidthGroups->end();
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129 | ++it)
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130 | {
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131 | ComObjPtr<BandwidthGroup> group;
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132 | group.createObject();
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133 | group->init(this, *it);
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134 | m->llBandwidthGroups->push_back(group);
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135 | }
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136 |
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137 | /* Confirm successful initialization */
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138 | autoInitSpan.setSucceeded();
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139 |
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140 | return S_OK;
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141 | }
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142 |
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143 | /**
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144 | * Initializes the bandwidth control object given another guest object
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145 | * (a kind of copy constructor). This object makes a private copy of data
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146 | * of the original object passed as an argument.
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147 | */
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148 | HRESULT BandwidthControl::initCopy(Machine *aParent, BandwidthControl *aThat)
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149 | {
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150 | LogFlowThisFunc(("aParent=%p, aThat=%p\n", aParent, aThat));
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151 |
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152 | ComAssertRet(aParent && aThat, E_INVALIDARG);
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153 |
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154 | /* Enclose the state transition NotReady->InInit->Ready */
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155 | AutoInitSpan autoInitSpan(this);
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156 | AssertReturn(autoInitSpan.isOk(), E_FAIL);
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157 |
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158 | m = new Data(aParent);
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159 | /* m->pPeer is left null */
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160 |
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161 | AutoCaller thatCaller(aThat);
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162 | AssertComRCReturnRC(thatCaller.rc());
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163 |
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164 | AutoReadLock thatlock(aThat COMMA_LOCKVAL_SRC_POS);
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165 |
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166 | /* create copies of all groups */
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167 | m->llBandwidthGroups.allocate();
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168 | BandwidthGroupList::const_iterator it;
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169 | for (it = aThat->m->llBandwidthGroups->begin();
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170 | it != aThat->m->llBandwidthGroups->end();
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171 | ++it)
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172 | {
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173 | ComObjPtr<BandwidthGroup> group;
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174 | group.createObject();
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175 | group->initCopy(this, *it);
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176 | m->llBandwidthGroups->push_back(group);
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177 | }
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178 |
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179 | /* Confirm a successful initialization */
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180 | autoInitSpan.setSucceeded();
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181 |
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182 | return S_OK;
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183 | }
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184 |
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185 |
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186 | /**
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187 | * @note Locks this object for writing, together with the peer object
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188 | * represented by @a aThat (locked for reading).
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189 | */
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190 | void BandwidthControl::i_copyFrom(BandwidthControl *aThat)
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191 | {
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192 | AssertReturnVoid(aThat != NULL);
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193 |
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194 | /* sanity */
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195 | AutoCaller autoCaller(this);
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196 | AssertComRCReturnVoid(autoCaller.rc());
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197 |
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198 | /* sanity too */
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199 | AutoCaller thatCaller(aThat);
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200 | AssertComRCReturnVoid(thatCaller.rc());
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201 |
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202 | /* even more sanity */
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203 | AutoAnyStateDependency adep(m->pParent);
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204 | AssertComRCReturnVoid(adep.rc());
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205 | /* Machine::copyFrom() may not be called when the VM is running */
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206 | AssertReturnVoid(!Global::IsOnline(adep.machineState()));
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207 |
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208 | /* peer is not modified, lock it for reading (aThat is "master" so locked
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209 | * first) */
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210 | AutoReadLock rl(aThat COMMA_LOCKVAL_SRC_POS);
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211 | AutoWriteLock wl(this COMMA_LOCKVAL_SRC_POS);
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212 |
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213 | /* create private copies of all bandwidth groups */
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214 | m->llBandwidthGroups.backup();
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215 | m->llBandwidthGroups->clear();
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216 | BandwidthGroupList::const_iterator it;
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217 | for (it = aThat->m->llBandwidthGroups->begin();
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218 | it != aThat->m->llBandwidthGroups->end();
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219 | ++it)
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220 | {
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221 | ComObjPtr<BandwidthGroup> group;
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222 | group.createObject();
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223 | group->initCopy(this, *it);
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224 | m->llBandwidthGroups->push_back(group);
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225 | }
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226 | }
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227 |
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228 | /** @note Locks objects for writing! */
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229 | void BandwidthControl::i_rollback()
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230 | {
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231 | AutoCaller autoCaller(this);
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232 | AssertComRCReturnVoid(autoCaller.rc());
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233 |
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234 | /* we need the machine state */
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235 | AutoAnyStateDependency adep(m->pParent);
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236 | AssertComRCReturnVoid(adep.rc());
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237 |
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238 | AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
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239 | BandwidthGroupList::const_iterator it;
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240 |
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241 | if (!m->llBandwidthGroups.isNull())
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242 | {
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243 | if (m->llBandwidthGroups.isBackedUp())
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244 | {
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245 | /* unitialize all new groups (absent in the backed up list). */
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246 | BandwidthGroupList *backedList = m->llBandwidthGroups.backedUpData();
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247 | for (it = m->llBandwidthGroups->begin();
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248 | it != m->llBandwidthGroups->end();
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249 | ++it)
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250 | {
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251 | if ( std::find(backedList->begin(), backedList->end(), *it)
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252 | == backedList->end())
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253 | (*it)->uninit();
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254 | }
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255 |
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256 | /* restore the list */
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257 | m->llBandwidthGroups.rollback();
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258 | }
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259 |
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260 | /* rollback any changes to groups after restoring the list */
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261 | for (it = m->llBandwidthGroups->begin();
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262 | it != m->llBandwidthGroups->end();
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263 | ++it)
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264 | (*it)->i_rollback();
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265 | }
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266 | }
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267 |
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268 | void BandwidthControl::i_commit()
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269 | {
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270 | bool commitBandwidthGroups = false;
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271 | BandwidthGroupList::const_iterator it;
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272 |
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273 | if (m->llBandwidthGroups.isBackedUp())
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274 | {
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275 | m->llBandwidthGroups.commit();
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276 |
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277 | if (m->pPeer)
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278 | {
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279 | AutoWriteLock peerlock(m->pPeer COMMA_LOCKVAL_SRC_POS);
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280 |
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281 | /* Commit all changes to new groups (this will reshare data with
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282 | * peers for those who have peers) */
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283 | BandwidthGroupList *newList = new BandwidthGroupList();
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284 | for (it = m->llBandwidthGroups->begin();
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285 | it != m->llBandwidthGroups->end();
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286 | ++it)
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287 | {
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288 | (*it)->i_commit();
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289 |
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290 | /* look if this group has a peer group */
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291 | ComObjPtr<BandwidthGroup> peer = (*it)->i_getPeer();
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292 | if (!peer)
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293 | {
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294 | /* no peer means the device is a newly created one;
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295 | * create a peer owning data this device share it with */
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296 | peer.createObject();
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297 | peer->init(m->pPeer, *it, true /* aReshare */);
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298 | }
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299 | else
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300 | {
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301 | /* remove peer from the old list */
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302 | m->pPeer->m->llBandwidthGroups->remove(peer);
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303 | }
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304 | /* and add it to the new list */
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305 | newList->push_back(peer);
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306 | }
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307 |
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308 | /* uninit old peer's groups that are left */
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309 | for (it = m->pPeer->m->llBandwidthGroups->begin();
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310 | it != m->pPeer->m->llBandwidthGroups->end();
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311 | ++it)
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312 | (*it)->uninit();
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313 |
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314 | /* attach new list of groups to our peer */
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315 | m->pPeer->m->llBandwidthGroups.attach(newList);
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316 | }
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317 | else
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318 | {
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319 | /* we have no peer (our parent is the newly created machine);
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320 | * just commit changes to devices */
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321 | commitBandwidthGroups = true;
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322 | }
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323 | }
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324 | else
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325 | {
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326 | /* the list of groups itself is not changed,
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327 | * just commit changes to groups themselves */
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328 | commitBandwidthGroups = true;
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329 | }
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330 |
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331 | if (commitBandwidthGroups)
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332 | {
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333 | for (it = m->llBandwidthGroups->begin();
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334 | it != m->llBandwidthGroups->end();
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335 | ++it)
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336 | (*it)->i_commit();
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337 | }
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338 | }
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339 |
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340 | /**
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341 | * Uninitializes the instance and sets the ready flag to FALSE.
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342 | * Called either from FinalRelease() or by the parent when it gets destroyed.
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343 | */
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344 | void BandwidthControl::uninit()
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345 | {
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346 | LogFlowThisFunc(("\n"));
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347 |
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348 | /* Enclose the state transition Ready->InUninit->NotReady */
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349 | AutoUninitSpan autoUninitSpan(this);
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350 | if (autoUninitSpan.uninitDone())
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351 | return;
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352 |
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353 | // uninit all groups on the list (it's a standard std::list not an ObjectsList
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354 | // so we must uninit() manually)
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355 | BandwidthGroupList::iterator it;
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356 | for (it = m->llBandwidthGroups->begin();
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357 | it != m->llBandwidthGroups->end();
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358 | ++it)
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359 | (*it)->uninit();
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360 |
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361 | m->llBandwidthGroups.free();
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362 |
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363 | unconst(m->pPeer) = NULL;
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364 | unconst(m->pParent) = NULL;
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365 |
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366 | delete m;
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367 | m = NULL;
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368 | }
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369 |
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370 | /**
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371 | * Returns a bandwidth group object with the given name.
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372 | *
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373 | * @param aName bandwidth group name to find
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374 | * @param aBandwidthGroup where to return the found bandwidth group
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375 | * @param aSetError true to set extended error info on failure
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376 | */
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377 | HRESULT BandwidthControl::i_getBandwidthGroupByName(const com::Utf8Str &aName,
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378 | ComObjPtr<BandwidthGroup> &aBandwidthGroup,
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379 | bool aSetError /* = false */)
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380 | {
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381 | AssertReturn(!aName.isEmpty(), E_INVALIDARG);
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382 |
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383 | for (BandwidthGroupList::const_iterator it = m->llBandwidthGroups->begin();
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384 | it != m->llBandwidthGroups->end();
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385 | ++it)
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386 | {
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387 | if ((*it)->i_getName() == aName)
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388 | {
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389 | aBandwidthGroup = (*it);
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390 | return S_OK;
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391 | }
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392 | }
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393 |
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394 | if (aSetError)
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395 | return setError(VBOX_E_OBJECT_NOT_FOUND,
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396 | tr("Could not find a bandwidth group named '%s'"),
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397 | aName.c_str());
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398 | return VBOX_E_OBJECT_NOT_FOUND;
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399 | }
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400 | // To do
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401 | HRESULT BandwidthControl::createBandwidthGroup(const com::Utf8Str &aName,
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402 | BandwidthGroupType_T aType,
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403 | LONG64 aMaxBytesPerSec)
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404 | {
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405 | /*
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406 | * Validate input.
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407 | */
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408 | if (aMaxBytesPerSec < 0)
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409 | return setError(E_INVALIDARG, tr("Bandwidth group limit cannot be negative"));
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410 | switch (aType)
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411 | {
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412 | case BandwidthGroupType_Null: /*??*/
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413 | case BandwidthGroupType_Disk:
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414 | break;
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415 | case BandwidthGroupType_Network:
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416 | if (aName.length() > PDM_NET_SHAPER_MAX_NAME_LEN)
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417 | return setError(E_INVALIDARG, tr("Bandwidth name is too long: %zu, max %u"),
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418 | aName.length(), PDM_NET_SHAPER_MAX_NAME_LEN);
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419 | break;
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420 | default:
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421 | AssertFailedReturn(setError(E_INVALIDARG, tr("Invalid group type: %d"), aType));
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422 | }
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423 | if (aName.isEmpty())
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424 | return setError(E_INVALIDARG, tr("Bandwidth group name must not be empty")); /* ConsoleImpl2.cpp fails then */
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425 |
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426 | /*
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427 | * The machine needs to be mutable:
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428 | */
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429 | AutoMutableOrSavedStateDependency adep(m->pParent);
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430 | HRESULT hrc = adep.rc();
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431 | if (SUCCEEDED(hrc))
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432 | {
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433 | AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
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434 |
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435 | /*
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436 | * Check that the group doesn't already exist:
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437 | */
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438 | ComObjPtr<BandwidthGroup> group;
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439 | hrc = i_getBandwidthGroupByName(aName, group, false /* aSetError */);
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440 | if (FAILED(hrc))
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441 | {
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442 | /*
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443 | * There is an upper limit of the number of network groups imposed by PDM.
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444 | */
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445 | size_t cNetworkGroups = 0;
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446 | if (aType == BandwidthGroupType_Network)
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447 | for (BandwidthGroupList::const_iterator it = m->llBandwidthGroups->begin();
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448 | it != m->llBandwidthGroups->end();
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449 | ++it)
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450 | if ((*it)->i_getType() == BandwidthGroupType_Network)
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451 | cNetworkGroups++;
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452 | if (cNetworkGroups < PDM_NET_SHAPER_MAX_GROUPS)
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453 | {
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454 | /*
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455 | * Create the new group.
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456 | */
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457 | hrc = group.createObject();
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458 | if (SUCCEEDED(hrc))
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459 | {
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460 | hrc = group->init(this, aName, aType, aMaxBytesPerSec);
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461 | if (SUCCEEDED(hrc))
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462 | {
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463 | /*
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464 | * Add it to the settings.
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465 | */
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466 | m->pParent->i_setModified(Machine::IsModified_BandwidthControl);
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467 | m->llBandwidthGroups.backup();
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468 | m->llBandwidthGroups->push_back(group);
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469 | hrc = S_OK;
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470 | }
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471 | }
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472 | }
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473 | else
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474 | hrc = setError(E_FAIL, tr("Too many network bandwidth groups (max %u)"), PDM_NET_SHAPER_MAX_GROUPS);
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475 | }
|
---|
476 | else
|
---|
477 | hrc = setError(VBOX_E_OBJECT_IN_USE, tr("Bandwidth group named '%s' already exists"), aName.c_str());
|
---|
478 | }
|
---|
479 | return hrc;
|
---|
480 | }
|
---|
481 |
|
---|
482 | HRESULT BandwidthControl::deleteBandwidthGroup(const com::Utf8Str &aName)
|
---|
483 | {
|
---|
484 | /* the machine needs to be mutable */
|
---|
485 | AutoMutableOrSavedStateDependency adep(m->pParent);
|
---|
486 | if (FAILED(adep.rc())) return adep.rc();
|
---|
487 |
|
---|
488 | AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
|
---|
489 |
|
---|
490 | ComObjPtr<BandwidthGroup> group;
|
---|
491 | HRESULT rc = i_getBandwidthGroupByName(aName, group, true /* aSetError */);
|
---|
492 | if (FAILED(rc)) return rc;
|
---|
493 |
|
---|
494 | if (group->i_getReferences() != 0)
|
---|
495 | return setError(VBOX_E_OBJECT_IN_USE,
|
---|
496 | tr("The bandwidth group '%s' is still in use"), aName.c_str());
|
---|
497 |
|
---|
498 | /* We can remove it now. */
|
---|
499 | m->pParent->i_setModified(Machine::IsModified_BandwidthControl);
|
---|
500 | m->llBandwidthGroups.backup();
|
---|
501 |
|
---|
502 | group->i_unshare();
|
---|
503 |
|
---|
504 | m->llBandwidthGroups->remove(group);
|
---|
505 |
|
---|
506 | /* inform the direct session if any */
|
---|
507 | alock.release();
|
---|
508 | //onStorageControllerChange(); @todo
|
---|
509 |
|
---|
510 | return S_OK;
|
---|
511 | }
|
---|
512 |
|
---|
513 | HRESULT BandwidthControl::getNumGroups(ULONG *aNumGroups)
|
---|
514 | {
|
---|
515 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
|
---|
516 |
|
---|
517 | *aNumGroups = (ULONG)m->llBandwidthGroups->size();
|
---|
518 |
|
---|
519 | return S_OK;
|
---|
520 | }
|
---|
521 |
|
---|
522 | HRESULT BandwidthControl::getBandwidthGroup(const com::Utf8Str &aName, ComPtr<IBandwidthGroup> &aBandwidthGroup)
|
---|
523 | {
|
---|
524 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
|
---|
525 |
|
---|
526 | ComObjPtr<BandwidthGroup> group;
|
---|
527 | HRESULT rc = i_getBandwidthGroupByName(aName, group, true /* aSetError */);
|
---|
528 |
|
---|
529 | if (SUCCEEDED(rc))
|
---|
530 | group.queryInterfaceTo(aBandwidthGroup.asOutParam());
|
---|
531 |
|
---|
532 | return rc;
|
---|
533 | }
|
---|
534 |
|
---|
535 | HRESULT BandwidthControl::getAllBandwidthGroups(std::vector<ComPtr<IBandwidthGroup> > &aBandwidthGroups)
|
---|
536 | {
|
---|
537 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
|
---|
538 | aBandwidthGroups.resize(0);
|
---|
539 | BandwidthGroupList::const_iterator it;
|
---|
540 | for (it = m->llBandwidthGroups->begin();
|
---|
541 | it != m->llBandwidthGroups->end();
|
---|
542 | ++it)
|
---|
543 | aBandwidthGroups.push_back(*it);
|
---|
544 |
|
---|
545 | return S_OK;
|
---|
546 | }
|
---|
547 |
|
---|
548 | HRESULT BandwidthControl::i_loadSettings(const settings::IOSettings &data)
|
---|
549 | {
|
---|
550 | HRESULT rc = S_OK;
|
---|
551 |
|
---|
552 | AutoCaller autoCaller(this);
|
---|
553 | AssertComRCReturnRC(autoCaller.rc());
|
---|
554 | settings::BandwidthGroupList::const_iterator it;
|
---|
555 | for (it = data.llBandwidthGroups.begin();
|
---|
556 | it != data.llBandwidthGroups.end();
|
---|
557 | ++it)
|
---|
558 | {
|
---|
559 | const settings::BandwidthGroup &gr = *it;
|
---|
560 | rc = createBandwidthGroup(gr.strName, gr.enmType, (LONG64)gr.cMaxBytesPerSec);
|
---|
561 | if (FAILED(rc)) break;
|
---|
562 | }
|
---|
563 |
|
---|
564 | return rc;
|
---|
565 | }
|
---|
566 |
|
---|
567 | HRESULT BandwidthControl::i_saveSettings(settings::IOSettings &data)
|
---|
568 | {
|
---|
569 | AutoCaller autoCaller(this);
|
---|
570 | if (FAILED(autoCaller.rc())) return autoCaller.rc();
|
---|
571 |
|
---|
572 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
|
---|
573 | data.llBandwidthGroups.clear();
|
---|
574 | BandwidthGroupList::const_iterator it;
|
---|
575 | for (it = m->llBandwidthGroups->begin();
|
---|
576 | it != m->llBandwidthGroups->end();
|
---|
577 | ++it)
|
---|
578 | {
|
---|
579 | AutoWriteLock groupLock(*it COMMA_LOCKVAL_SRC_POS);
|
---|
580 | settings::BandwidthGroup group;
|
---|
581 |
|
---|
582 | group.strName = (*it)->i_getName();
|
---|
583 | group.enmType = (*it)->i_getType();
|
---|
584 | group.cMaxBytesPerSec = (uint64_t)(*it)->i_getMaxBytesPerSec();
|
---|
585 |
|
---|
586 | data.llBandwidthGroups.push_back(group);
|
---|
587 | }
|
---|
588 |
|
---|
589 | return S_OK;
|
---|
590 | }
|
---|
591 |
|
---|
592 | Machine * BandwidthControl::i_getMachine() const
|
---|
593 | {
|
---|
594 | return m->pParent;
|
---|
595 | }
|
---|
596 |
|
---|