1 | |
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2 | /*************************************************************************************************** |
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3 | ** |
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4 | ** Real-Time Hierarchical Profiling for Game Programming Gems 3 |
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5 | ** |
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6 | ** by Greg Hjelstrom & Byon Garrabrant |
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7 | ** |
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8 | ***************************************************************************************************/ |
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9 | |
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10 | // Credits: The Clock class was inspired by the Timer classes in |
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11 | // Ogre (www.ogre3d.org). |
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12 | |
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13 | #ifndef QUICK_PROF_H |
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14 | #define QUICK_PROF_H |
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15 | |
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16 | #include "btScalar.h" |
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17 | #include "LinearMath/btAlignedAllocator.h" |
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18 | #include <new> |
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19 | //To disable built-in profiling, please comment out next line |
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20 | //#define BT_NO_PROFILE 1 |
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21 | |
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22 | |
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23 | //if you don't need btClock, you can comment next line |
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24 | #define USE_BT_CLOCK 1 |
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25 | |
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26 | #ifdef USE_BT_CLOCK |
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27 | #ifdef __CELLOS_LV2__ |
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28 | #include <sys/sys_time.h> |
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29 | #include <sys/time_util.h> |
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30 | #include <stdio.h> |
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31 | #endif |
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32 | |
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33 | #if defined (SUNOS) || defined (__SUNOS__) |
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34 | #include <stdio.h> |
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35 | #endif |
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36 | |
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37 | #if defined(WIN32) || defined(_WIN32) |
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38 | |
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39 | #define USE_WINDOWS_TIMERS |
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40 | #define WIN32_LEAN_AND_MEAN |
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41 | #define NOWINRES |
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42 | #define NOMCX |
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43 | #define NOIME |
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44 | #ifdef _XBOX |
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45 | #include <Xtl.h> |
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46 | #else |
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47 | #include <windows.h> |
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48 | #endif |
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49 | #include <time.h> |
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50 | |
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51 | #else |
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52 | #include <sys/time.h> |
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53 | #endif |
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54 | |
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55 | #define mymin(a,b) (a > b ? a : b) |
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56 | |
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57 | ///The btClock is a portable basic clock that measures accurate time in seconds, use for profiling. |
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58 | class btClock |
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59 | { |
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60 | public: |
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61 | btClock() |
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62 | { |
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63 | #ifdef USE_WINDOWS_TIMERS |
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64 | QueryPerformanceFrequency(&mClockFrequency); |
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65 | #endif |
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66 | reset(); |
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67 | } |
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68 | |
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69 | ~btClock() |
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70 | { |
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71 | } |
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72 | |
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73 | /// Resets the initial reference time. |
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74 | void reset() |
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75 | { |
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76 | #ifdef USE_WINDOWS_TIMERS |
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77 | QueryPerformanceCounter(&mStartTime); |
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78 | mStartTick = GetTickCount(); |
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79 | mPrevElapsedTime = 0; |
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80 | #else |
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81 | #ifdef __CELLOS_LV2__ |
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82 | |
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83 | typedef uint64_t ClockSize; |
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84 | ClockSize newTime; |
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85 | //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); |
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86 | SYS_TIMEBASE_GET( newTime ); |
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87 | mStartTime = newTime; |
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88 | #else |
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89 | gettimeofday(&mStartTime, 0); |
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90 | #endif |
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91 | |
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92 | #endif |
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93 | } |
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94 | |
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95 | /// Returns the time in ms since the last call to reset or since |
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96 | /// the btClock was created. |
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97 | unsigned long int getTimeMilliseconds() |
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98 | { |
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99 | #ifdef USE_WINDOWS_TIMERS |
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100 | LARGE_INTEGER currentTime; |
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101 | QueryPerformanceCounter(¤tTime); |
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102 | LONGLONG elapsedTime = currentTime.QuadPart - |
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103 | mStartTime.QuadPart; |
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104 | |
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105 | // Compute the number of millisecond ticks elapsed. |
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106 | unsigned long msecTicks = (unsigned long)(1000 * elapsedTime / |
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107 | mClockFrequency.QuadPart); |
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108 | |
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109 | // Check for unexpected leaps in the Win32 performance counter. |
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110 | // (This is caused by unexpected data across the PCI to ISA |
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111 | // bridge, aka south bridge. See Microsoft KB274323.) |
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112 | unsigned long elapsedTicks = GetTickCount() - mStartTick; |
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113 | signed long msecOff = (signed long)(msecTicks - elapsedTicks); |
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114 | if (msecOff < -100 || msecOff > 100) |
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115 | { |
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116 | // Adjust the starting time forwards. |
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117 | LONGLONG msecAdjustment = mymin(msecOff * |
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118 | mClockFrequency.QuadPart / 1000, elapsedTime - |
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119 | mPrevElapsedTime); |
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120 | mStartTime.QuadPart += msecAdjustment; |
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121 | elapsedTime -= msecAdjustment; |
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122 | |
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123 | // Recompute the number of millisecond ticks elapsed. |
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124 | msecTicks = (unsigned long)(1000 * elapsedTime / |
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125 | mClockFrequency.QuadPart); |
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126 | } |
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127 | |
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128 | // Store the current elapsed time for adjustments next time. |
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129 | mPrevElapsedTime = elapsedTime; |
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130 | |
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131 | return msecTicks; |
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132 | #else |
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133 | |
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134 | #ifdef __CELLOS_LV2__ |
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135 | uint64_t freq=sys_time_get_timebase_frequency(); |
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136 | double dFreq=((double) freq) / 1000.0; |
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137 | typedef uint64_t ClockSize; |
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138 | ClockSize newTime; |
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139 | SYS_TIMEBASE_GET( newTime ); |
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140 | //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); |
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141 | |
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142 | return (unsigned long int)((double(newTime-mStartTime)) / dFreq); |
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143 | #else |
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144 | |
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145 | struct timeval currentTime; |
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146 | gettimeofday(¤tTime, 0); |
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147 | return (currentTime.tv_sec - mStartTime.tv_sec) * 1000 + |
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148 | (currentTime.tv_usec - mStartTime.tv_usec) / 1000; |
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149 | #endif //__CELLOS_LV2__ |
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150 | #endif |
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151 | } |
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152 | |
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153 | /// Returns the time in us since the last call to reset or since |
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154 | /// the Clock was created. |
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155 | unsigned long int getTimeMicroseconds() |
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156 | { |
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157 | #ifdef USE_WINDOWS_TIMERS |
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158 | LARGE_INTEGER currentTime; |
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159 | QueryPerformanceCounter(¤tTime); |
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160 | LONGLONG elapsedTime = currentTime.QuadPart - |
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161 | mStartTime.QuadPart; |
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162 | |
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163 | // Compute the number of millisecond ticks elapsed. |
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164 | unsigned long msecTicks = (unsigned long)(1000 * elapsedTime / |
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165 | mClockFrequency.QuadPart); |
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166 | |
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167 | // Check for unexpected leaps in the Win32 performance counter. |
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168 | // (This is caused by unexpected data across the PCI to ISA |
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169 | // bridge, aka south bridge. See Microsoft KB274323.) |
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170 | unsigned long elapsedTicks = GetTickCount() - mStartTick; |
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171 | signed long msecOff = (signed long)(msecTicks - elapsedTicks); |
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172 | if (msecOff < -100 || msecOff > 100) |
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173 | { |
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174 | // Adjust the starting time forwards. |
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175 | LONGLONG msecAdjustment = mymin(msecOff * |
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176 | mClockFrequency.QuadPart / 1000, elapsedTime - |
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177 | mPrevElapsedTime); |
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178 | mStartTime.QuadPart += msecAdjustment; |
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179 | elapsedTime -= msecAdjustment; |
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180 | } |
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181 | |
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182 | // Store the current elapsed time for adjustments next time. |
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183 | mPrevElapsedTime = elapsedTime; |
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184 | |
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185 | // Convert to microseconds. |
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186 | unsigned long usecTicks = (unsigned long)(1000000 * elapsedTime / |
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187 | mClockFrequency.QuadPart); |
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188 | |
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189 | return usecTicks; |
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190 | #else |
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191 | |
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192 | #ifdef __CELLOS_LV2__ |
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193 | uint64_t freq=sys_time_get_timebase_frequency(); |
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194 | double dFreq=((double) freq)/ 1000000.0; |
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195 | typedef uint64_t ClockSize; |
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196 | ClockSize newTime; |
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197 | //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); |
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198 | SYS_TIMEBASE_GET( newTime ); |
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199 | |
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200 | return (unsigned long int)((double(newTime-mStartTime)) / dFreq); |
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201 | #else |
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202 | |
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203 | struct timeval currentTime; |
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204 | gettimeofday(¤tTime, 0); |
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205 | return (currentTime.tv_sec - mStartTime.tv_sec) * 1000000 + |
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206 | (currentTime.tv_usec - mStartTime.tv_usec); |
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207 | #endif//__CELLOS_LV2__ |
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208 | #endif |
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209 | } |
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210 | |
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211 | private: |
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212 | #ifdef USE_WINDOWS_TIMERS |
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213 | LARGE_INTEGER mClockFrequency; |
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214 | DWORD mStartTick; |
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215 | LONGLONG mPrevElapsedTime; |
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216 | LARGE_INTEGER mStartTime; |
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217 | #else |
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218 | #ifdef __CELLOS_LV2__ |
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219 | uint64_t mStartTime; |
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220 | #else |
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221 | struct timeval mStartTime; |
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222 | #endif |
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223 | #endif //__CELLOS_LV2__ |
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224 | |
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225 | }; |
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226 | |
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227 | #endif //USE_BT_CLOCK |
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228 | |
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229 | |
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230 | |
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231 | |
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232 | ///A node in the Profile Hierarchy Tree |
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233 | class CProfileNode { |
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234 | |
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235 | public: |
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236 | CProfileNode( const char * name, CProfileNode * parent ); |
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237 | ~CProfileNode( void ); |
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238 | |
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239 | CProfileNode * Get_Sub_Node( const char * name ); |
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240 | |
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241 | CProfileNode * Get_Parent( void ) { return Parent; } |
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242 | CProfileNode * Get_Sibling( void ) { return Sibling; } |
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243 | CProfileNode * Get_Child( void ) { return Child; } |
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244 | |
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245 | void CleanupMemory(); |
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246 | void Reset( void ); |
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247 | void Call( void ); |
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248 | bool Return( void ); |
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249 | |
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250 | const char * Get_Name( void ) { return Name; } |
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251 | int Get_Total_Calls( void ) { return TotalCalls; } |
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252 | float Get_Total_Time( void ) { return TotalTime; } |
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253 | |
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254 | protected: |
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255 | |
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256 | const char * Name; |
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257 | int TotalCalls; |
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258 | float TotalTime; |
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259 | unsigned long int StartTime; |
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260 | int RecursionCounter; |
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261 | |
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262 | CProfileNode * Parent; |
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263 | CProfileNode * Child; |
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264 | CProfileNode * Sibling; |
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265 | }; |
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266 | |
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267 | ///An iterator to navigate through the tree |
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268 | class CProfileIterator |
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269 | { |
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270 | public: |
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271 | // Access all the children of the current parent |
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272 | void First(void); |
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273 | void Next(void); |
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274 | bool Is_Done(void); |
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275 | bool Is_Root(void) { return (CurrentParent->Get_Parent() == 0); } |
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276 | |
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277 | void Enter_Child( int index ); // Make the given child the new parent |
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278 | void Enter_Largest_Child( void ); // Make the largest child the new parent |
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279 | void Enter_Parent( void ); // Make the current parent's parent the new parent |
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280 | |
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281 | // Access the current child |
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282 | const char * Get_Current_Name( void ) { return CurrentChild->Get_Name(); } |
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283 | int Get_Current_Total_Calls( void ) { return CurrentChild->Get_Total_Calls(); } |
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284 | float Get_Current_Total_Time( void ) { return CurrentChild->Get_Total_Time(); } |
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285 | |
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286 | // Access the current parent |
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287 | const char * Get_Current_Parent_Name( void ) { return CurrentParent->Get_Name(); } |
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288 | int Get_Current_Parent_Total_Calls( void ) { return CurrentParent->Get_Total_Calls(); } |
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289 | float Get_Current_Parent_Total_Time( void ) { return CurrentParent->Get_Total_Time(); } |
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290 | |
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291 | protected: |
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292 | |
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293 | CProfileNode * CurrentParent; |
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294 | CProfileNode * CurrentChild; |
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295 | |
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296 | CProfileIterator( CProfileNode * start ); |
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297 | friend class CProfileManager; |
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298 | }; |
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299 | |
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300 | |
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301 | ///The Manager for the Profile system |
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302 | class CProfileManager { |
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303 | public: |
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304 | static void Start_Profile( const char * name ); |
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305 | static void Stop_Profile( void ); |
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306 | |
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307 | static void CleanupMemory(void) |
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308 | { |
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309 | Root.CleanupMemory(); |
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310 | } |
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311 | |
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312 | static void Reset( void ); |
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313 | static void Increment_Frame_Counter( void ); |
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314 | static int Get_Frame_Count_Since_Reset( void ) { return FrameCounter; } |
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315 | static float Get_Time_Since_Reset( void ); |
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316 | |
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317 | static CProfileIterator * Get_Iterator( void ) |
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318 | { |
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319 | |
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320 | return new CProfileIterator( &Root ); |
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321 | } |
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322 | static void Release_Iterator( CProfileIterator * iterator ) { delete ( iterator); } |
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323 | |
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324 | private: |
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325 | static CProfileNode Root; |
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326 | static CProfileNode * CurrentNode; |
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327 | static int FrameCounter; |
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328 | static unsigned long int ResetTime; |
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329 | }; |
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330 | |
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331 | |
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332 | ///ProfileSampleClass is a simple way to profile a function's scope |
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333 | ///Use the BT_PROFILE macro at the start of scope to time |
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334 | class CProfileSample { |
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335 | public: |
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336 | CProfileSample( const char * name ) |
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337 | { |
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338 | CProfileManager::Start_Profile( name ); |
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339 | } |
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340 | |
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341 | ~CProfileSample( void ) |
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342 | { |
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343 | CProfileManager::Stop_Profile(); |
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344 | } |
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345 | }; |
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346 | |
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347 | #if !defined(BT_NO_PROFILE) |
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348 | #define BT_PROFILE( name ) CProfileSample __profile( name ) |
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349 | #else |
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350 | #define BT_PROFILE( name ) |
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351 | #endif |
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352 | |
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353 | |
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354 | |
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355 | |
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356 | #endif //QUICK_PROF_H |
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357 | |
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358 | |
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