1 | /* $Id: MMHeap.cpp 18287 2009-03-26 03:34:54Z vboxsync $ */
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2 | /** @file
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3 | * MM - Memory Manager - Heap.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2007 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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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19 | * additional information or have any questions.
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20 | */
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21 |
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22 |
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23 | /*******************************************************************************
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24 | * Header Files *
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25 | *******************************************************************************/
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26 | #define LOG_GROUP LOG_GROUP_MM_HEAP
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27 | #include <VBox/mm.h>
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28 | #include <VBox/stam.h>
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29 | #include <VBox/pgm.h>
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30 | #include "MMInternal.h"
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31 | #include <VBox/vm.h>
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32 | #include <VBox/uvm.h>
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33 | #include <VBox/err.h>
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34 | #include <VBox/param.h>
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35 | #include <VBox/log.h>
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36 |
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37 | #include <iprt/alloc.h>
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38 | #include <iprt/assert.h>
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39 | #include <iprt/string.h>
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40 |
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41 |
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42 | /*******************************************************************************
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43 | * Internal Functions *
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44 | *******************************************************************************/
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45 | static void *mmR3HeapAlloc(PMMHEAP pHeap, MMTAG enmTag, size_t cbSize, bool fZero);
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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 | * Allocate and initialize a heap structure and it's associated substructures.
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51 | *
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52 | * @returns VBox status.
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53 | * @param pVM The handle to the VM the heap should be associated with.
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54 | * @param ppHeap Where to store the heap pointer.
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55 | */
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56 | int mmR3HeapCreateU(PUVM pUVM, PMMHEAP *ppHeap)
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57 | {
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58 | PMMHEAP pHeap = (PMMHEAP)RTMemAllocZ(sizeof(MMHEAP) + sizeof(MMHEAPSTAT));
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59 | if (pHeap)
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60 | {
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61 | int rc = RTCritSectInit(&pHeap->Lock);
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62 | if (RT_SUCCESS(rc))
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63 | {
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64 | /*
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65 | * Initialize the global stat record.
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66 | */
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67 | pHeap->pUVM = pUVM;
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68 | pHeap->Stat.pHeap = pHeap;
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69 | #ifdef MMR3HEAP_WITH_STATISTICS
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70 | PMMHEAPSTAT pStat = &pHeap->Stat;
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71 | STAMR3RegisterU(pUVM, &pStat->cAllocations, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cAllocations", STAMUNIT_CALLS, "Number or MMR3HeapAlloc() calls.");
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72 | STAMR3RegisterU(pUVM, &pStat->cReallocations, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cReallocations", STAMUNIT_CALLS, "Number of MMR3HeapRealloc() calls.");
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73 | STAMR3RegisterU(pUVM, &pStat->cFrees, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cFrees", STAMUNIT_CALLS, "Number of MMR3HeapFree() calls.");
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74 | STAMR3RegisterU(pUVM, &pStat->cFailures, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cFailures", STAMUNIT_COUNT, "Number of failures.");
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75 | STAMR3RegisterU(pUVM, &pStat->cbCurAllocated, sizeof(pStat->cbCurAllocated) == sizeof(uint32_t) ? STAMTYPE_U32 : STAMTYPE_U64,
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76 | STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cbCurAllocated", STAMUNIT_BYTES, "Number of bytes currently allocated.");
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77 | STAMR3RegisterU(pUVM, &pStat->cbAllocated, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cbAllocated", STAMUNIT_BYTES, "Total number of bytes allocated.");
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78 | STAMR3RegisterU(pUVM, &pStat->cbFreed, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, "/MM/R3Heap/cbFreed", STAMUNIT_BYTES, "Total number of bytes freed.");
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79 | #endif
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80 | *ppHeap = pHeap;
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81 | return VINF_SUCCESS;
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82 | }
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83 | AssertRC(rc);
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84 | RTMemFree(pHeap);
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85 | }
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86 | AssertMsgFailed(("failed to allocate heap structure\n"));
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87 | return VERR_NO_MEMORY;
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88 | }
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89 |
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90 |
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91 | /**
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92 | * Destroy a heap.
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93 | *
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94 | * @param pHeap Heap handle.
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95 | */
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96 | void mmR3HeapDestroy(PMMHEAP pHeap)
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97 | {
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98 | /*
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99 | * Start by deleting the lock, that'll trap anyone
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100 | * attempting to use the heap.
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101 | */
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102 | RTCritSectDelete(&pHeap->Lock);
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103 |
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104 | /*
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105 | * Walk the node list and free all the memory.
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106 | */
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107 | PMMHEAPHDR pHdr = pHeap->pHead;
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108 | while (pHdr)
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109 | {
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110 | void *pv = pHdr;
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111 | pHdr = pHdr->pNext;
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112 | RTMemFree(pv);
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113 | }
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114 |
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115 | /*
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116 | * Free the stat nodes.
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117 | */
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118 | /** @todo free all nodes in a AVL tree. */
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119 | RTMemFree(pHeap);
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120 | }
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121 |
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122 |
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123 | /**
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124 | * Allocate memory associating it with the VM for collective cleanup.
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125 | *
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126 | * The memory will be allocated from the default heap but a header
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127 | * is added in which we keep track of which VM it belongs to and chain
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128 | * all the allocations together so they can be freed in one go.
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129 | *
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130 | * This interface is typically used for memory block which will not be
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131 | * freed during the life of the VM.
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132 | *
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133 | * @returns Pointer to allocated memory.
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134 | * @param pUVM Pointer to the user mode VM structure.
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135 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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136 | * basis in addition to a global one. Thus we can easily
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137 | * identify how memory is used by the VM.
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138 | * @param cbSize Size of the block.
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139 | */
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140 | VMMR3DECL(void *) MMR3HeapAllocU(PUVM pUVM, MMTAG enmTag, size_t cbSize)
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141 | {
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142 | Assert(pUVM->mm.s.pHeap);
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143 | return mmR3HeapAlloc(pUVM->mm.s.pHeap, enmTag, cbSize, false);
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144 | }
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145 |
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146 |
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147 | /**
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148 | * Allocate memory associating it with the VM for collective cleanup.
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149 | *
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150 | * The memory will be allocated from the default heap but a header
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151 | * is added in which we keep track of which VM it belongs to and chain
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152 | * all the allocations together so they can be freed in one go.
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153 | *
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154 | * This interface is typically used for memory block which will not be
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155 | * freed during the life of the VM.
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156 | *
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157 | * @returns Pointer to allocated memory.
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158 | * @param pVM VM handle.
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159 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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160 | * basis in addition to a global one. Thus we can easily
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161 | * identify how memory is used by the VM.
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162 | * @param cbSize Size of the block.
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163 | */
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164 | VMMR3DECL(void *) MMR3HeapAlloc(PVM pVM, MMTAG enmTag, size_t cbSize)
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165 | {
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166 | return mmR3HeapAlloc(pVM->pUVM->mm.s.pHeap, enmTag, cbSize, false);
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167 | }
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168 |
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169 |
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170 | /**
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171 | * Same as MMR3HeapAllocU().
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172 | *
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173 | * @returns Pointer to allocated memory.
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174 | * @param pUVM Pointer to the user mode VM structure.
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175 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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176 | * basis in addition to a global one. Thus we can easily
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177 | * identify how memory is used by the VM.
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178 | * @param cbSize Size of the block.
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179 | * @param ppv Where to store the pointer to the allocated memory on success.
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180 | */
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181 | VMMR3DECL(int) MMR3HeapAllocExU(PUVM pUVM, MMTAG enmTag, size_t cbSize, void **ppv)
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182 | {
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183 | Assert(pUVM->mm.s.pHeap);
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184 | void *pv = mmR3HeapAlloc(pUVM->mm.s.pHeap, enmTag, cbSize, false);
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185 | if (pv)
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186 | {
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187 | *ppv = pv;
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188 | return VINF_SUCCESS;
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189 | }
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190 | return VERR_NO_MEMORY;
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191 | }
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192 |
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193 |
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194 | /**
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195 | * Same as MMR3HeapAlloc().
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196 | *
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197 | * @returns Pointer to allocated memory.
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198 | * @param pVM VM handle.
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199 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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200 | * basis in addition to a global one. Thus we can easily
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201 | * identify how memory is used by the VM.
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202 | * @param cbSize Size of the block.
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203 | * @param ppv Where to store the pointer to the allocated memory on success.
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204 | */
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205 | VMMR3DECL(int) MMR3HeapAllocEx(PVM pVM, MMTAG enmTag, size_t cbSize, void **ppv)
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206 | {
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207 | void *pv = mmR3HeapAlloc(pVM->pUVM->mm.s.pHeap, enmTag, cbSize, false);
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208 | if (pv)
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209 | {
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210 | *ppv = pv;
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211 | return VINF_SUCCESS;
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212 | }
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213 | return VERR_NO_MEMORY;
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214 | }
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215 |
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216 |
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217 | /**
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218 | * Same as MMR3HeapAlloc() only the memory is zeroed.
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219 | *
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220 | * @returns Pointer to allocated memory.
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221 | * @param pUVM Pointer to the user mode VM structure.
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222 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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223 | * basis in addition to a global one. Thus we can easily
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224 | * identify how memory is used by the VM.
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225 | * @param cbSize Size of the block.
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226 | */
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227 | VMMR3DECL(void *) MMR3HeapAllocZU(PUVM pUVM, MMTAG enmTag, size_t cbSize)
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228 | {
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229 | return mmR3HeapAlloc(pUVM->mm.s.pHeap, enmTag, cbSize, true);
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230 | }
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231 |
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232 |
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233 | /**
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234 | * Same as MMR3HeapAlloc() only the memory is zeroed.
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235 | *
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236 | * @returns Pointer to allocated memory.
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237 | * @param pVM VM handle.
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238 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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239 | * basis in addition to a global one. Thus we can easily
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240 | * identify how memory is used by the VM.
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241 | * @param cbSize Size of the block.
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242 | */
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243 | VMMR3DECL(void *) MMR3HeapAllocZ(PVM pVM, MMTAG enmTag, size_t cbSize)
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244 | {
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245 | return mmR3HeapAlloc(pVM->pUVM->mm.s.pHeap, enmTag, cbSize, true);
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246 | }
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247 |
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248 |
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249 | /**
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250 | * Same as MMR3HeapAllocZ().
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251 | *
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252 | * @returns Pointer to allocated memory.
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253 | * @param pUVM Pointer to the user mode VM structure.
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254 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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255 | * basis in addition to a global one. Thus we can easily
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256 | * identify how memory is used by the VM.
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257 | * @param cbSize Size of the block.
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258 | * @param ppv Where to store the pointer to the allocated memory on success.
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259 | */
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260 | VMMR3DECL(int) MMR3HeapAllocZExU(PUVM pUVM, MMTAG enmTag, size_t cbSize, void **ppv)
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261 | {
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262 | Assert(pUVM->mm.s.pHeap);
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263 | void *pv = mmR3HeapAlloc(pUVM->mm.s.pHeap, enmTag, cbSize, true);
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264 | if (pv)
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265 | {
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266 | *ppv = pv;
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267 | return VINF_SUCCESS;
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268 | }
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269 | return VERR_NO_MEMORY;
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270 | }
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271 |
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272 |
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273 | /**
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274 | * Same as MMR3HeapAllocZ().
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275 | *
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276 | * @returns Pointer to allocated memory.
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277 | * @param pVM VM handle.
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278 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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279 | * basis in addition to a global one. Thus we can easily
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280 | * identify how memory is used by the VM.
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281 | * @param cbSize Size of the block.
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282 | * @param ppv Where to store the pointer to the allocated memory on success.
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283 | */
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284 | VMMR3DECL(int) MMR3HeapAllocZEx(PVM pVM, MMTAG enmTag, size_t cbSize, void **ppv)
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285 | {
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286 | void *pv = mmR3HeapAlloc(pVM->pUVM->mm.s.pHeap, enmTag, cbSize, true);
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287 | if (pv)
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288 | {
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289 | *ppv = pv;
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290 | return VINF_SUCCESS;
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291 | }
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292 | return VERR_NO_MEMORY;
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293 | }
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294 |
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295 |
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296 | /**
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297 | * Allocate memory from the heap.
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298 | *
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299 | * @returns Pointer to allocated memory.
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300 | * @param pHeap Heap handle.
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301 | * @param enmTag Statistics tag. Statistics are collected on a per tag
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302 | * basis in addition to a global one. Thus we can easily
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303 | * identify how memory is used by the VM.
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304 | * @param cbSize Size of the block.
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305 | * @param fZero Whether or not to zero the memory block.
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306 | */
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307 | void *mmR3HeapAlloc(PMMHEAP pHeap, MMTAG enmTag, size_t cbSize, bool fZero)
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308 | {
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309 | #ifdef MMR3HEAP_WITH_STATISTICS
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310 | RTCritSectEnter(&pHeap->Lock);
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311 |
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312 | /*
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313 | * Find/alloc statistics nodes.
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314 | */
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315 | pHeap->Stat.cAllocations++;
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316 | PMMHEAPSTAT pStat = (PMMHEAPSTAT)RTAvlULGet(&pHeap->pStatTree, (AVLULKEY)enmTag);
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317 | if (pStat)
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318 | {
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319 | pStat->cAllocations++;
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320 |
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321 | RTCritSectLeave(&pHeap->Lock);
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322 | }
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323 | else
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324 | {
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325 | pStat = (PMMHEAPSTAT)RTMemAllocZ(sizeof(MMHEAPSTAT));
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326 | if (!pStat)
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327 | {
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328 | pHeap->Stat.cFailures++;
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329 | AssertMsgFailed(("Failed to allocate heap stat record.\n"));
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330 | RTCritSectLeave(&pHeap->Lock);
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331 | return NULL;
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332 | }
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333 | pStat->Core.Key = (AVLULKEY)enmTag;
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334 | pStat->pHeap = pHeap;
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335 | RTAvlULInsert(&pHeap->pStatTree, &pStat->Core);
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336 |
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337 | pStat->cAllocations++;
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338 | RTCritSectLeave(&pHeap->Lock);
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339 |
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340 | /* register the statistics */
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341 | PUVM pUVM = pHeap->pUVM;
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342 | const char *pszTag = mmR3GetTagName(enmTag);
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343 | STAMR3RegisterFU(pUVM, &pStat->cbCurAllocated, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Number of bytes currently allocated.", "/MM/R3Heap/%s", pszTag);
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344 | STAMR3RegisterFU(pUVM, &pStat->cAllocations, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Number or MMR3HeapAlloc() calls.", "/MM/R3Heap/%s/cAllocations", pszTag);
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345 | STAMR3RegisterFU(pUVM, &pStat->cReallocations, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Number of MMR3HeapRealloc() calls.", "/MM/R3Heap/%s/cReallocations", pszTag);
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346 | STAMR3RegisterFU(pUVM, &pStat->cFrees, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Number of MMR3HeapFree() calls.", "/MM/R3Heap/%s/cFrees", pszTag);
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347 | STAMR3RegisterFU(pUVM, &pStat->cFailures, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Number of failures.", "/MM/R3Heap/%s/cFailures", pszTag);
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348 | STAMR3RegisterFU(pUVM, &pStat->cbAllocated, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Total number of bytes allocated.", "/MM/R3Heap/%s/cbAllocated", pszTag);
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349 | STAMR3RegisterFU(pUVM, &pStat->cbFreed, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Total number of bytes freed.", "/MM/R3Heap/%s/cbFreed", pszTag);
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350 | }
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351 | #endif
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352 |
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353 | /*
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354 | * Validate input.
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355 | */
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356 | if (cbSize == 0)
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357 | {
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358 | #ifdef MMR3HEAP_WITH_STATISTICS
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359 | RTCritSectEnter(&pHeap->Lock);
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360 | pStat->cFailures++;
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361 | pHeap->Stat.cFailures++;
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362 | RTCritSectLeave(&pHeap->Lock);
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363 | #endif
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364 | return NULL;
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365 | }
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366 |
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367 | /*
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368 | * Allocate heap block.
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369 | */
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370 | cbSize = RT_ALIGN_Z(cbSize, MMR3HEAP_SIZE_ALIGNMENT) + sizeof(MMHEAPHDR);
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371 | PMMHEAPHDR pHdr = (PMMHEAPHDR)(fZero ? RTMemAllocZ(cbSize) : RTMemAlloc(cbSize));
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372 | if (!pHdr)
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373 | {
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374 | AssertMsgFailed(("Failed to allocate heap block %d, enmTag=%x(%.4s).\n", cbSize, enmTag, &enmTag));
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375 | #ifdef MMR3HEAP_WITH_STATISTICS
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376 | RTCritSectEnter(&pHeap->Lock);
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377 | pStat->cFailures++;
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378 | pHeap->Stat.cFailures++;
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379 | RTCritSectLeave(&pHeap->Lock);
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380 | #endif
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381 | return NULL;
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382 | }
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383 | Assert(!((uintptr_t)pHdr & (RTMEM_ALIGNMENT - 1)));
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384 |
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385 | RTCritSectEnter(&pHeap->Lock);
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386 |
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387 | /*
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388 | * Init and link in the header.
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389 | */
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390 | pHdr->pNext = NULL;
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391 | pHdr->pPrev = pHeap->pTail;
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392 | if (pHdr->pPrev)
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393 | pHdr->pPrev->pNext = pHdr;
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394 | else
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395 | pHeap->pHead = pHdr;
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396 | pHeap->pTail = pHdr;
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397 | #ifdef MMR3HEAP_WITH_STATISTICS
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398 | pHdr->pStat = pStat;
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399 | #else
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400 | pHdr->pStat = &pHeap->Stat;
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401 | #endif
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402 | pHdr->cbSize = cbSize;
|
---|
403 |
|
---|
404 | /*
|
---|
405 | * Update statistics
|
---|
406 | */
|
---|
407 | #ifdef MMR3HEAP_WITH_STATISTICS
|
---|
408 | pStat->cbAllocated += cbSize;
|
---|
409 | pStat->cbCurAllocated += cbSize;
|
---|
410 | pHeap->Stat.cbAllocated += cbSize;
|
---|
411 | pHeap->Stat.cbCurAllocated += cbSize;
|
---|
412 | #endif
|
---|
413 |
|
---|
414 | RTCritSectLeave(&pHeap->Lock);
|
---|
415 |
|
---|
416 | return pHdr + 1;
|
---|
417 | }
|
---|
418 |
|
---|
419 |
|
---|
420 | /**
|
---|
421 | * Reallocate memory allocated with MMR3HeapAlloc() or MMR3HeapRealloc().
|
---|
422 | *
|
---|
423 | * @returns Pointer to reallocated memory.
|
---|
424 | * @param pv Pointer to the memory block to reallocate.
|
---|
425 | * Must not be NULL!
|
---|
426 | * @param cbNewSize New block size.
|
---|
427 | */
|
---|
428 | VMMR3DECL(void *) MMR3HeapRealloc(void *pv, size_t cbNewSize)
|
---|
429 | {
|
---|
430 | AssertMsg(pv, ("Invalid pointer pv=%p\n", pv));
|
---|
431 | if (!pv)
|
---|
432 | return NULL;
|
---|
433 |
|
---|
434 | /*
|
---|
435 | * If newsize is zero then this is a free.
|
---|
436 | */
|
---|
437 | if (!cbNewSize)
|
---|
438 | {
|
---|
439 | MMR3HeapFree(pv);
|
---|
440 | return NULL;
|
---|
441 | }
|
---|
442 |
|
---|
443 | /*
|
---|
444 | * Validate header.
|
---|
445 | */
|
---|
446 | PMMHEAPHDR pHdr = (PMMHEAPHDR)pv - 1;
|
---|
447 | if ( pHdr->cbSize & (MMR3HEAP_SIZE_ALIGNMENT - 1)
|
---|
448 | || (uintptr_t)pHdr & (RTMEM_ALIGNMENT - 1))
|
---|
449 | {
|
---|
450 | AssertMsgFailed(("Invalid heap header! pv=%p, size=%#x\n", pv, pHdr->cbSize));
|
---|
451 | return NULL;
|
---|
452 | }
|
---|
453 | Assert(pHdr->pStat != NULL);
|
---|
454 | Assert(!((uintptr_t)pHdr->pNext & (RTMEM_ALIGNMENT - 1)));
|
---|
455 | Assert(!((uintptr_t)pHdr->pPrev & (RTMEM_ALIGNMENT - 1)));
|
---|
456 |
|
---|
457 | PMMHEAP pHeap = pHdr->pStat->pHeap;
|
---|
458 |
|
---|
459 | #ifdef MMR3HEAP_WITH_STATISTICS
|
---|
460 | RTCritSectEnter(&pHeap->Lock);
|
---|
461 | pHdr->pStat->cReallocations++;
|
---|
462 | pHeap->Stat.cReallocations++;
|
---|
463 | RTCritSectLeave(&pHeap->Lock);
|
---|
464 | #endif
|
---|
465 |
|
---|
466 | /*
|
---|
467 | * Rellocate the block.
|
---|
468 | */
|
---|
469 | cbNewSize = RT_ALIGN_Z(cbNewSize, MMR3HEAP_SIZE_ALIGNMENT) + sizeof(MMHEAPHDR);
|
---|
470 | PMMHEAPHDR pHdrNew = (PMMHEAPHDR)RTMemRealloc(pHdr, cbNewSize);
|
---|
471 | if (!pHdrNew)
|
---|
472 | {
|
---|
473 | #ifdef MMR3HEAP_WITH_STATISTICS
|
---|
474 | RTCritSectEnter(&pHeap->Lock);
|
---|
475 | pHdr->pStat->cFailures++;
|
---|
476 | pHeap->Stat.cFailures++;
|
---|
477 | RTCritSectLeave(&pHeap->Lock);
|
---|
478 | #endif
|
---|
479 | return NULL;
|
---|
480 | }
|
---|
481 |
|
---|
482 | /*
|
---|
483 | * Update pointers.
|
---|
484 | */
|
---|
485 | if (pHdrNew != pHdr)
|
---|
486 | {
|
---|
487 | RTCritSectEnter(&pHeap->Lock);
|
---|
488 | if (pHdrNew->pPrev)
|
---|
489 | pHdrNew->pPrev->pNext = pHdrNew;
|
---|
490 | else
|
---|
491 | pHeap->pHead = pHdrNew;
|
---|
492 |
|
---|
493 | if (pHdrNew->pNext)
|
---|
494 | pHdrNew->pNext->pPrev = pHdrNew;
|
---|
495 | else
|
---|
496 | pHeap->pTail = pHdrNew;
|
---|
497 | RTCritSectLeave(&pHeap->Lock);
|
---|
498 | }
|
---|
499 |
|
---|
500 | /*
|
---|
501 | * Update statistics.
|
---|
502 | */
|
---|
503 | #ifdef MMR3HEAP_WITH_STATISTICS
|
---|
504 | RTCritSectEnter(&pHeap->Lock);
|
---|
505 | pHdrNew->pStat->cbAllocated += cbNewSize - pHdrNew->cbSize;
|
---|
506 | pHeap->Stat.cbAllocated += cbNewSize - pHdrNew->cbSize;
|
---|
507 | RTCritSectLeave(&pHeap->Lock);
|
---|
508 | #endif
|
---|
509 |
|
---|
510 | pHdrNew->cbSize = cbNewSize;
|
---|
511 |
|
---|
512 | return pHdrNew + 1;
|
---|
513 | }
|
---|
514 |
|
---|
515 |
|
---|
516 | /**
|
---|
517 | * Duplicates the specified string.
|
---|
518 | *
|
---|
519 | * @returns Pointer to the duplicate.
|
---|
520 | * @returns NULL on failure or when input NULL.
|
---|
521 | * @param pUVM Pointer to the user mode VM structure.
|
---|
522 | * @param enmTag Statistics tag. Statistics are collected on a per tag
|
---|
523 | * basis in addition to a global one. Thus we can easily
|
---|
524 | * identify how memory is used by the VM.
|
---|
525 | * @param psz The string to duplicate. NULL is allowed.
|
---|
526 | */
|
---|
527 | VMMR3DECL(char *) MMR3HeapStrDupU(PUVM pUVM, MMTAG enmTag, const char *psz)
|
---|
528 | {
|
---|
529 | if (!psz)
|
---|
530 | return NULL;
|
---|
531 | AssertPtr(psz);
|
---|
532 |
|
---|
533 | size_t cch = strlen(psz) + 1;
|
---|
534 | char *pszDup = (char *)MMR3HeapAllocU(pUVM, enmTag, cch);
|
---|
535 | if (pszDup)
|
---|
536 | memcpy(pszDup, psz, cch);
|
---|
537 | return pszDup;
|
---|
538 | }
|
---|
539 |
|
---|
540 |
|
---|
541 | /**
|
---|
542 | * Duplicates the specified string.
|
---|
543 | *
|
---|
544 | * @returns Pointer to the duplicate.
|
---|
545 | * @returns NULL on failure or when input NULL.
|
---|
546 | * @param pVM The VM handle.
|
---|
547 | * @param enmTag Statistics tag. Statistics are collected on a per tag
|
---|
548 | * basis in addition to a global one. Thus we can easily
|
---|
549 | * identify how memory is used by the VM.
|
---|
550 | * @param psz The string to duplicate. NULL is allowed.
|
---|
551 | */
|
---|
552 | VMMR3DECL(char *) MMR3HeapStrDup(PVM pVM, MMTAG enmTag, const char *psz)
|
---|
553 | {
|
---|
554 | return MMR3HeapStrDupU(pVM->pUVM, enmTag, psz);
|
---|
555 | }
|
---|
556 |
|
---|
557 |
|
---|
558 | /**
|
---|
559 | * Allocating string printf.
|
---|
560 | *
|
---|
561 | * @returns Pointer to the string.
|
---|
562 | * @param pVM The VM
|
---|
563 | * @param enmTag The statistics tag.
|
---|
564 | * @param pszFormat The format string.
|
---|
565 | * @param ... Format arguments.
|
---|
566 | */
|
---|
567 | VMMR3DECL(char *) MMR3HeapAPrintf(PVM pVM, MMTAG enmTag, const char *pszFormat, ...)
|
---|
568 | {
|
---|
569 | va_list va;
|
---|
570 | va_start(va, pszFormat);
|
---|
571 | char *psz = MMR3HeapAPrintfVU(pVM->pUVM, enmTag, pszFormat, va);
|
---|
572 | va_end(va);
|
---|
573 | return psz;
|
---|
574 | }
|
---|
575 |
|
---|
576 |
|
---|
577 | /**
|
---|
578 | * Allocating string printf.
|
---|
579 | *
|
---|
580 | * @returns Pointer to the string.
|
---|
581 | * @param pUVM Pointer to the user mode VM structure.
|
---|
582 | * @param enmTag The statistics tag.
|
---|
583 | * @param pszFormat The format string.
|
---|
584 | * @param ... Format arguments.
|
---|
585 | */
|
---|
586 | VMMR3DECL(char *) MMR3HeapAPrintfU(PUVM pUVM, MMTAG enmTag, const char *pszFormat, ...)
|
---|
587 | {
|
---|
588 | va_list va;
|
---|
589 | va_start(va, pszFormat);
|
---|
590 | char *psz = MMR3HeapAPrintfVU(pUVM, enmTag, pszFormat, va);
|
---|
591 | va_end(va);
|
---|
592 | return psz;
|
---|
593 | }
|
---|
594 |
|
---|
595 |
|
---|
596 | /**
|
---|
597 | * Allocating string printf.
|
---|
598 | *
|
---|
599 | * @returns Pointer to the string.
|
---|
600 | * @param pVM The VM
|
---|
601 | * @param enmTag The statistics tag.
|
---|
602 | * @param pszFormat The format string.
|
---|
603 | * @param va Format arguments.
|
---|
604 | */
|
---|
605 | VMMR3DECL(char *) MMR3HeapAPrintfV(PVM pVM, MMTAG enmTag, const char *pszFormat, va_list va)
|
---|
606 | {
|
---|
607 | return MMR3HeapAPrintfVU(pVM->pUVM, enmTag, pszFormat, va);
|
---|
608 | }
|
---|
609 |
|
---|
610 |
|
---|
611 | /**
|
---|
612 | * Allocating string printf.
|
---|
613 | *
|
---|
614 | * @returns Pointer to the string.
|
---|
615 | * @param pUVM Pointer to the user mode VM structure.
|
---|
616 | * @param enmTag The statistics tag.
|
---|
617 | * @param pszFormat The format string.
|
---|
618 | * @param va Format arguments.
|
---|
619 | */
|
---|
620 | VMMR3DECL(char *) MMR3HeapAPrintfVU(PUVM pUVM, MMTAG enmTag, const char *pszFormat, va_list va)
|
---|
621 | {
|
---|
622 | /*
|
---|
623 | * The lazy bird way.
|
---|
624 | */
|
---|
625 | char *psz;
|
---|
626 | int cch = RTStrAPrintfV(&psz, pszFormat, va);
|
---|
627 | if (cch < 0)
|
---|
628 | return NULL;
|
---|
629 | Assert(psz[cch] == '\0');
|
---|
630 | char *pszRet = (char *)MMR3HeapAllocU(pUVM, enmTag, cch + 1);
|
---|
631 | if (pszRet)
|
---|
632 | memcpy(pszRet, psz, cch + 1);
|
---|
633 | RTStrFree(psz);
|
---|
634 | return pszRet;
|
---|
635 | }
|
---|
636 |
|
---|
637 |
|
---|
638 | /**
|
---|
639 | * Releases memory allocated with MMR3HeapAlloc() or MMR3HeapRealloc().
|
---|
640 | *
|
---|
641 | * @param pv Pointer to the memory block to free.
|
---|
642 | */
|
---|
643 | VMMR3DECL(void) MMR3HeapFree(void *pv)
|
---|
644 | {
|
---|
645 | /* Ignore NULL pointers. */
|
---|
646 | if (!pv)
|
---|
647 | return;
|
---|
648 |
|
---|
649 | /*
|
---|
650 | * Validate header.
|
---|
651 | */
|
---|
652 | PMMHEAPHDR pHdr = (PMMHEAPHDR)pv - 1;
|
---|
653 | if ( pHdr->cbSize & (MMR3HEAP_SIZE_ALIGNMENT - 1)
|
---|
654 | || (uintptr_t)pHdr & (RTMEM_ALIGNMENT - 1))
|
---|
655 | {
|
---|
656 | AssertMsgFailed(("Invalid heap header! pv=%p, size=%#x\n", pv, pHdr->cbSize));
|
---|
657 | return;
|
---|
658 | }
|
---|
659 | Assert(pHdr->pStat != NULL);
|
---|
660 | Assert(!((uintptr_t)pHdr->pNext & (RTMEM_ALIGNMENT - 1)));
|
---|
661 | Assert(!((uintptr_t)pHdr->pPrev & (RTMEM_ALIGNMENT - 1)));
|
---|
662 |
|
---|
663 | /*
|
---|
664 | * Update statistics
|
---|
665 | */
|
---|
666 | PMMHEAP pHeap = pHdr->pStat->pHeap;
|
---|
667 | RTCritSectEnter(&pHeap->Lock);
|
---|
668 |
|
---|
669 | #ifdef MMR3HEAP_WITH_STATISTICS
|
---|
670 | pHdr->pStat->cFrees++;
|
---|
671 | pHeap->Stat.cFrees++;
|
---|
672 | pHdr->pStat->cbFreed += pHdr->cbSize;
|
---|
673 | pHeap->Stat.cbFreed += pHdr->cbSize;
|
---|
674 | pHdr->pStat->cbCurAllocated -= pHdr->cbSize;
|
---|
675 | pHeap->Stat.cbCurAllocated -= pHdr->cbSize;
|
---|
676 | #endif
|
---|
677 |
|
---|
678 | /*
|
---|
679 | * Unlink it.
|
---|
680 | */
|
---|
681 | if (pHdr->pPrev)
|
---|
682 | pHdr->pPrev->pNext = pHdr->pNext;
|
---|
683 | else
|
---|
684 | pHeap->pHead = pHdr->pNext;
|
---|
685 |
|
---|
686 | if (pHdr->pNext)
|
---|
687 | pHdr->pNext->pPrev = pHdr->pPrev;
|
---|
688 | else
|
---|
689 | pHeap->pTail = pHdr->pPrev;
|
---|
690 |
|
---|
691 | RTCritSectLeave(&pHeap->Lock);
|
---|
692 |
|
---|
693 | /*
|
---|
694 | * Free the memory.
|
---|
695 | */
|
---|
696 | RTMemFree(pHdr);
|
---|
697 | }
|
---|
698 |
|
---|
699 |
|
---|
700 | /**
|
---|
701 | * Gets the string name of a memory tag.
|
---|
702 | *
|
---|
703 | * @returns name of enmTag.
|
---|
704 | * @param enmTag The tag.
|
---|
705 | */
|
---|
706 | const char *mmR3GetTagName(MMTAG enmTag)
|
---|
707 | {
|
---|
708 | switch (enmTag)
|
---|
709 | {
|
---|
710 | #define TAG2STR(tag) case MM_TAG_##tag: return #tag
|
---|
711 |
|
---|
712 | TAG2STR(CFGM);
|
---|
713 | TAG2STR(CFGM_BYTES);
|
---|
714 | TAG2STR(CFGM_STRING);
|
---|
715 | TAG2STR(CFGM_USER);
|
---|
716 |
|
---|
717 | TAG2STR(CSAM);
|
---|
718 | TAG2STR(CSAM_PATCH);
|
---|
719 |
|
---|
720 | TAG2STR(DBGF);
|
---|
721 | TAG2STR(DBGF_INFO);
|
---|
722 | TAG2STR(DBGF_LINE);
|
---|
723 | TAG2STR(DBGF_LINE_DUP);
|
---|
724 | TAG2STR(DBGF_MODULE);
|
---|
725 | TAG2STR(DBGF_OS);
|
---|
726 | TAG2STR(DBGF_STACK);
|
---|
727 | TAG2STR(DBGF_SYMBOL);
|
---|
728 | TAG2STR(DBGF_SYMBOL_DUP);
|
---|
729 |
|
---|
730 | TAG2STR(EM);
|
---|
731 |
|
---|
732 | TAG2STR(IOM);
|
---|
733 | TAG2STR(IOM_STATS);
|
---|
734 |
|
---|
735 | TAG2STR(MM);
|
---|
736 | TAG2STR(MM_LOOKUP_GUEST);
|
---|
737 | TAG2STR(MM_LOOKUP_PHYS);
|
---|
738 | TAG2STR(MM_LOOKUP_VIRT);
|
---|
739 | TAG2STR(MM_PAGE);
|
---|
740 |
|
---|
741 | TAG2STR(PARAV);
|
---|
742 |
|
---|
743 | TAG2STR(PATM);
|
---|
744 | TAG2STR(PATM_PATCH);
|
---|
745 |
|
---|
746 | TAG2STR(PDM);
|
---|
747 | TAG2STR(PDM_DEVICE);
|
---|
748 | TAG2STR(PDM_DEVICE_USER);
|
---|
749 | TAG2STR(PDM_DRIVER);
|
---|
750 | TAG2STR(PDM_DRIVER_USER);
|
---|
751 | TAG2STR(PDM_USB);
|
---|
752 | TAG2STR(PDM_USB_USER);
|
---|
753 | TAG2STR(PDM_LUN);
|
---|
754 | TAG2STR(PDM_QUEUE);
|
---|
755 | TAG2STR(PDM_THREAD);
|
---|
756 | TAG2STR(PDM_ASYNC_COMPLETION);
|
---|
757 |
|
---|
758 | TAG2STR(PGM);
|
---|
759 | TAG2STR(PGM_CHUNK_MAPPING);
|
---|
760 | TAG2STR(PGM_HANDLERS);
|
---|
761 | TAG2STR(PGM_MAPPINGS);
|
---|
762 | TAG2STR(PGM_PHYS);
|
---|
763 | TAG2STR(PGM_POOL);
|
---|
764 |
|
---|
765 | TAG2STR(REM);
|
---|
766 |
|
---|
767 | TAG2STR(SELM);
|
---|
768 |
|
---|
769 | TAG2STR(SSM);
|
---|
770 |
|
---|
771 | TAG2STR(STAM);
|
---|
772 |
|
---|
773 | TAG2STR(TM);
|
---|
774 |
|
---|
775 | TAG2STR(TRPM);
|
---|
776 |
|
---|
777 | TAG2STR(VM);
|
---|
778 | TAG2STR(VM_REQ);
|
---|
779 |
|
---|
780 | TAG2STR(VMM);
|
---|
781 |
|
---|
782 | TAG2STR(HWACCM);
|
---|
783 |
|
---|
784 | #undef TAG2STR
|
---|
785 |
|
---|
786 | default:
|
---|
787 | {
|
---|
788 | AssertMsgFailed(("Unknown tag %d! forgot to add it to the switch?\n", enmTag));
|
---|
789 | static char sz[48];
|
---|
790 | RTStrPrintf(sz, sizeof(sz), "%d", enmTag);
|
---|
791 | return sz;
|
---|
792 | }
|
---|
793 | }
|
---|
794 | }
|
---|
795 |
|
---|