1 | /** |
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2 | * @file hoarddetours.cpp |
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3 | * @brief Hooks to Hoard for Detours. |
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4 | * @author Emery Berger <http://www.cs.umass.edu/~emery> |
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5 | */ |
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6 | |
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7 | /* |
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8 | To compile, run compile-detours.cmd, or do the following: |
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9 | |
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10 | cl /I.. /LD /MD /DNDEBUG /Ox /Zp8 /Oa /G6 /Oy /I/detours/include hoarddetours.cpp \detours\lib\detours.lib /link /subsystem:console /entry:_DllMainCRTStartup@12 /force:multiple |
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11 | |
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12 | To use (via withdll.exe, from Detours): |
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13 | |
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14 | detours\withdll -d:hoarddetours.dll myexecutable.exe |
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15 | |
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16 | */ |
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17 | |
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18 | #include "VERSION.h" |
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19 | |
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20 | #define CUSTOM_PREFIX(n) hoard##n |
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21 | |
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22 | #if !defined(_WIN32) |
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23 | #error "This file is for Windows only." |
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24 | #endif |
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25 | |
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26 | #define WIN32_LEAN_AND_MEAN |
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27 | #define _WIN32_WINNT 0x0500 |
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28 | #define NT |
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29 | |
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30 | #include <windows.h> |
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31 | #include <stdio.h> |
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32 | #include <malloc.h> |
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33 | #include "detours.h" |
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34 | |
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35 | #if defined(_WIN32) |
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36 | #pragma inline_depth(255) |
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37 | #endif |
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38 | |
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39 | #include "cpuinfo.h" |
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40 | #include "hoard.h" |
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41 | |
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42 | volatile int anyThreadCreated = 0; |
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43 | |
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44 | const int MaxThreads = 512; |
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45 | const int NumHeaps = 64; |
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46 | |
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47 | using namespace Hoard; |
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48 | |
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49 | class TheCustomHeapType : public HoardHeap<MaxThreads, NumHeaps> {}; |
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50 | |
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51 | inline static TheCustomHeapType * getCustomHeap (void) { |
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52 | static char thBuf[sizeof(TheCustomHeapType)]; |
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53 | static TheCustomHeapType * th = new (thBuf) TheCustomHeapType; |
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54 | return th; |
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55 | } |
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56 | |
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57 | // Allocate exactly one object. |
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58 | static void * objectAllocated = (void *) 0x1; |
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59 | |
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60 | extern "C" { |
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61 | DETOUR_TRAMPOLINE(void __cdecl real_onexit (void (*f)(void)), |
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62 | onexit); |
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63 | |
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64 | DETOUR_TRAMPOLINE(void __cdecl real_exit (int code), |
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65 | exit); |
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66 | |
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67 | DETOUR_TRAMPOLINE(void * __cdecl real_malloc (size_t sz), |
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68 | malloc); |
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69 | |
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70 | DETOUR_TRAMPOLINE(void * __cdecl real_realloc (void * ptr, size_t sz), |
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71 | realloc); |
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72 | |
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73 | DETOUR_TRAMPOLINE(void * __cdecl real_calloc (size_t sz, size_t n), |
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74 | calloc); |
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75 | |
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76 | DETOUR_TRAMPOLINE(void * __cdecl real_free (void * ptr), |
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77 | free); |
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78 | |
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79 | DETOUR_TRAMPOLINE(size_t __cdecl real_msize (void * ptr), |
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80 | _msize); |
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81 | |
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82 | DETOUR_TRAMPOLINE(void * __cdecl real_expand(void * memblock, size_t size), |
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83 | _expand); |
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84 | |
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85 | DETOUR_TRAMPOLINE(char * __cdecl real_strdup (const char * s), |
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86 | strdup); |
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87 | |
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88 | } |
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89 | |
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90 | /* Detours */ |
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91 | |
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92 | #include "wrapper.cpp" |
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93 | |
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94 | // We use Hoard to manage small objects and the original allocator |
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95 | // to manage large objects. |
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96 | |
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97 | static const int HOARD_MAX_EXIT_FUNCTIONS = 512; |
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98 | static int exitCount = 0; |
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99 | |
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100 | typedef void (*exitFunctionType) (void); |
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101 | exitFunctionType exitFunctionBuffer[HOARD_MAX_EXIT_FUNCTIONS]; |
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102 | |
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103 | extern "C" void my_onexit (void (*function)(void)) { |
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104 | if (exitCount < HOARD_MAX_EXIT_FUNCTIONS) { |
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105 | exitFunctionBuffer[exitCount] = function; |
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106 | exitCount++; |
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107 | } |
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108 | } |
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109 | |
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110 | extern "C" void my_exit (int code) { |
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111 | while (exitCount > 0) { |
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112 | exitCount--; |
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113 | (exitFunctionBuffer[exitCount])(); |
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114 | } |
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115 | real_exit (code); |
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116 | } |
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117 | |
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118 | extern "C" void my_cexit (void) { |
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119 | my_exit (0); |
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120 | } |
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121 | |
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122 | extern "C" void * my_expand (void * memblock, size_t size) |
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123 | { |
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124 | // Disable by always returning NULL (the error condition for _expand). |
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125 | return NULL; |
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126 | } |
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127 | |
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128 | |
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129 | /* Install Detours trampolines. */ |
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130 | |
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131 | #define REPLACE(module,x,fn) \ |
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132 | { \ |
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133 | PBYTE p; \ |
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134 | p = DetourFindFunction ((module), (x)); \ |
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135 | if (p) { \ |
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136 | DetourFunction (p, (PBYTE) (fn)); \ |
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137 | } \ |
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138 | } |
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139 | |
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140 | #define REMOVE(module,x,fn) \ |
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141 | { \ |
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142 | PBYTE p; \ |
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143 | p = DetourFindFunction ((module), (x)); \ |
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144 | if (p) { \ |
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145 | DetourRemove (p, (PBYTE) (fn)); \ |
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146 | } \ |
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147 | } |
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148 | |
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149 | |
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150 | void trampolineInstall (HMODULE hModule, |
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151 | bool insert) |
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152 | { |
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153 | typedef PBYTE (__stdcall *drtype)(PBYTE, PBYTE); |
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154 | typedef BOOL (__stdcall *dfwtype)(PBYTE, PBYTE); |
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155 | PBYTE p; |
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156 | drtype dr; |
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157 | dfwtype dfw; |
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158 | |
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159 | if (insert) { |
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160 | dfw = &DetourFunctionWithTrampoline; |
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161 | dr = &DetourFunction; |
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162 | } else { |
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163 | dfw = &DetourRemove; |
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164 | dr = (drtype) &DetourRemove; |
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165 | } |
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166 | |
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167 | (*dfw) ((PBYTE) real_realloc, (PBYTE) CUSTOM_PREFIX(realloc)); |
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168 | (*dfw) ((PBYTE) real_calloc, (PBYTE) CUSTOM_PREFIX(calloc)); |
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169 | (*dfw) ((PBYTE) real_msize, (PBYTE) CUSTOM_PREFIX(malloc_usable_size)); |
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170 | (*dfw) ((PBYTE) real_strdup, (PBYTE) CUSTOM_PREFIX(strdup)); |
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171 | (*dfw) ((PBYTE) real_malloc, (PBYTE) CUSTOM_PREFIX(malloc)); |
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172 | (*dfw) ((PBYTE) real_free, (PBYTE) CUSTOM_PREFIX(free)); |
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173 | (*dfw) ((PBYTE) real_expand, (PBYTE) my_expand); |
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174 | (*dfw) ((PBYTE) real_onexit, (PBYTE) my_onexit); |
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175 | (*dfw) ((PBYTE) real_exit, (PBYTE) my_exit); |
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176 | |
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177 | char dllName[MAX_PATH]; |
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178 | |
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179 | for (HINSTANCE hInst = NULL; (hInst = DetourEnumerateModules(hInst)) != NULL; ) { |
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180 | GetModuleFileName(hInst, dllName, MAX_PATH); |
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181 | |
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182 | // Replace the memory allocation calls in the MSVCR library. |
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183 | |
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184 | if ((strstr(dllName, "MSVCR") != 0) || (strstr(dllName, "msvcr") != 0)) { |
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185 | |
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186 | // operator new, new[], delete, delete[] |
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187 | // see undname |
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188 | |
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189 | // operator new |
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190 | p = DetourFindFunction (dllName, "??2@YAPAXI@Z"); |
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191 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(malloc)); |
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192 | |
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193 | // operator new[] |
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194 | p = DetourFindFunction (dllName, "??_U@YAPAXI@Z"); |
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195 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(malloc)); |
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196 | |
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197 | // operator delete |
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198 | p = DetourFindFunction (dllName, "??3@YAXPAX@Z"); |
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199 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(free)); |
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200 | |
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201 | // operator delete[] |
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202 | p = DetourFindFunction (dllName, "??_V@YAXPAX@Z"); |
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203 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(free)); |
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204 | |
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205 | p = DetourFindFunction (dllName, "realloc"); |
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206 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(realloc)); |
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207 | |
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208 | p = DetourFindFunction (dllName, "calloc"); |
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209 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(calloc)); |
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210 | |
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211 | p = DetourFindFunction (dllName, "_msize"); |
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212 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(malloc_usable_size)); |
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213 | |
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214 | p = DetourFindFunction (dllName, "strdup"); |
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215 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(strdup)); |
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216 | |
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217 | p = DetourFindFunction (dllName, "malloc"); |
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218 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(malloc)); |
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219 | |
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220 | p = DetourFindFunction (dllName, "free"); |
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221 | if (p) (*dr)(p, (PBYTE) CUSTOM_PREFIX(free)); |
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222 | |
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223 | p = DetourFindFunction (dllName, "_expand"); |
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224 | if (p) (*dr)(p, (PBYTE) my_expand); |
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225 | |
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226 | p = DetourFindFunction (dllName, "_onexit"); |
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227 | if (p) (*dr)(p, (PBYTE) my_onexit); |
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228 | |
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229 | p = DetourFindFunction (dllName, "exit"); |
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230 | if (p) (*dr)(p, (PBYTE) my_exit); |
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231 | |
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232 | p = DetourFindFunction (dllName, "_cexit"); |
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233 | if (p) (*dr)(p, (PBYTE) my_cexit); |
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234 | } |
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235 | } |
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236 | } |
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237 | |
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238 | void trampolineWith (HMODULE hModule) { |
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239 | trampolineInstall (hModule, true); |
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240 | } |
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241 | |
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242 | |
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243 | #if defined(_WIN32) |
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244 | #pragma warning(disable:4273) |
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245 | #endif |
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246 | |
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247 | static void initializeMaps (void) { |
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248 | int i; |
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249 | for (i = 0; i < TheCustomHeapType::MaxThreads; i++) { |
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250 | getCustomHeap()->setTidMap(i, 0); |
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251 | } |
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252 | for (i = 0; i < TheCustomHeapType::MaxHeaps; i++) { |
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253 | getCustomHeap()->setInusemap (i, 0); |
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254 | } |
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255 | } |
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256 | |
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257 | static void findUnusedHeap (void) { |
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258 | // Find an unused heap. |
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259 | |
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260 | int tid = HL::CPUInfo::getThreadId() % TheCustomHeapType::MaxThreads; |
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261 | |
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262 | int i = 0; |
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263 | while ((i < TheCustomHeapType::MaxHeaps) && (getCustomHeap()->getInusemap(i))) |
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264 | i++; |
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265 | if (i >= TheCustomHeapType::MaxHeaps) { |
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266 | // Every heap is in use: pick a random victim. |
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267 | i = (int) ( TheCustomHeapType::MaxHeaps * ((double) rand() / (double) RAND_MAX)); |
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268 | } |
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269 | int v = getCustomHeap()->getInusemap(i); |
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270 | |
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271 | getCustomHeap()->setInusemap (i, 1); |
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272 | getCustomHeap()->setTidMap (tid, i); |
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273 | } |
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274 | |
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275 | static void releaseHeap (void) { |
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276 | // Decrement the ref-count on the current heap. |
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277 | |
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278 | enum { VerifyPowerOfTwo = 1 / ((TheCustomHeapType::MaxThreads & ~(TheCustomHeapType::MaxThreads-1))) }; |
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279 | |
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280 | int tid = HL::CPUInfo::getThreadId() & (TheCustomHeapType::MaxThreads - 1); |
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281 | int heapIndex = getCustomHeap()->getTidMap (tid); |
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282 | |
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283 | // printf ("thread %d releasing heap %d\n", tid, heapIndex); |
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284 | |
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285 | int v = getCustomHeap()->getInusemap (heapIndex); |
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286 | getCustomHeap()->setInusemap (heapIndex, 0); |
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287 | |
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288 | // Prevent underruns (defensive programming). |
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289 | |
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290 | if (getCustomHeap()->getInusemap (heapIndex) < 0) { |
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291 | getCustomHeap()->setInusemap (heapIndex, 0); |
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292 | } |
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293 | } |
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294 | |
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295 | |
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296 | BOOL APIENTRY DllMain (HINSTANCE hModule, |
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297 | DWORD dwReason, |
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298 | PVOID lpReserved) |
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299 | { |
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300 | int i; |
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301 | int tid; |
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302 | static int np = HL::CPUInfo::computeNumProcessors(); |
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303 | char dllName[MAX_PATH]; |
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304 | switch (dwReason) { |
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305 | case DLL_PROCESS_ATTACH: |
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306 | fprintf (stderr, "This software uses the Hoard scalable memory allocator (version " HOARD_VERSION_STRING ", Detours).\nCopyright (C) 2005 Emery Berger, The University of Texas at Austin,\nand the University of Massachusetts Amherst.\nFor more information, see http://www.hoard.org\n"); |
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307 | initializeMaps(); |
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308 | trampolineWith (hModule); |
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309 | break; |
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310 | case DLL_PROCESS_DETACH: |
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311 | // Notice that we haven't replaced all heap calls. Here's one. |
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312 | objectAllocated = (void *) real_malloc(1); |
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313 | break; |
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314 | case DLL_THREAD_ATTACH: |
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315 | anyThreadCreated = 1; |
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316 | if (np == 1) { |
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317 | getCustomHeap()->setTidMap ((int) HL::CPUInfo::getThreadId() % TheCustomHeapType::MaxThreads, 0); |
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318 | } else { |
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319 | findUnusedHeap(); |
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320 | } |
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321 | break; |
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322 | case DLL_THREAD_DETACH: |
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323 | if (np != 1) { |
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324 | releaseHeap(); |
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325 | } |
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326 | break; |
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327 | } |
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328 | return TRUE; |
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329 | } |
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330 | |
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331 | |
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