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3.23
src/LinearMath/btQuickprof.cpp
805 строк
23 KB
David Carlier
profile, enable TLS for a handful of BSD platforms.
04 дек 2020, 12:17
04 дек 2020, 12:17
3c7cdb4
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/* *************************************************************************************************** ** ** profile.cpp ** ** Real-Time Hierarchical Profiling for Game Programming Gems 3 ** ** by Greg Hjelstrom & Byon Garrabrant ** ***************************************************************************************************/ // Credits: The Clock class was inspired by the Timer classes in // Ogre (www.ogre3d.org). #include "btQuickprof.h" #include "btThreads.h" #ifdef __CELLOS_LV2__ #include <sys/sys_time.h> #include <sys/time_util.h> #include <stdio.h> #endif #if defined(SUNOS) || defined(__SUNOS__) #include <stdio.h> #endif #ifdef __APPLE__ #include <mach/mach_time.h> #include <TargetConditionals.h> #endif #if defined(WIN32) || defined(_WIN32) #define BT_USE_WINDOWS_TIMERS #define WIN32_LEAN_AND_MEAN #define NOWINRES #define NOMCX #define NOIME #ifdef _XBOX #include <Xtl.h> #else //_XBOX #include <windows.h> #if WINVER < 0x0602 #define GetTickCount64 GetTickCount #endif #endif //_XBOX #include <time.h> #else //_WIN32 #include <sys/time.h> #ifdef BT_LINUX_REALTIME //required linking against rt (librt) #include <time.h> #endif //BT_LINUX_REALTIME #endif //_WIN32 #define mymin(a, b) (a > b ? a : b) struct btClockData { #ifdef BT_USE_WINDOWS_TIMERS LARGE_INTEGER mClockFrequency; LONGLONG mStartTick; LARGE_INTEGER mStartTime; #else #ifdef __CELLOS_LV2__ uint64_t mStartTime; #else #ifdef __APPLE__ uint64_t mStartTimeNano; #endif struct timeval mStartTime; #endif #endif //__CELLOS_LV2__ }; ///The btClock is a portable basic clock that measures accurate time in seconds, use for profiling. btClock::btClock() { m_data = new btClockData; #ifdef BT_USE_WINDOWS_TIMERS QueryPerformanceFrequency(&m_data->mClockFrequency); #endif reset(); } btClock::~btClock() { delete m_data; } btClock::btClock(const btClock& other) { m_data = new btClockData; *m_data = *other.m_data; } btClock& btClock::operator=(const btClock& other) { *m_data = *other.m_data; return *this; } /// Resets the initial reference time. void btClock::reset() { #ifdef BT_USE_WINDOWS_TIMERS QueryPerformanceCounter(&m_data->mStartTime); m_data->mStartTick = GetTickCount64(); #else #ifdef __CELLOS_LV2__ typedef uint64_t ClockSize; ClockSize newTime; //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); SYS_TIMEBASE_GET(newTime); m_data->mStartTime = newTime; #else #ifdef __APPLE__ m_data->mStartTimeNano = mach_absolute_time(); #endif gettimeofday(&m_data->mStartTime, 0); #endif #endif } /// Returns the time in ms since the last call to reset or since /// the btClock was created. unsigned long long int btClock::getTimeMilliseconds() { #ifdef BT_USE_WINDOWS_TIMERS LARGE_INTEGER currentTime; QueryPerformanceCounter(¤tTime); LONGLONG elapsedTime = currentTime.QuadPart - m_data->mStartTime.QuadPart; // Compute the number of millisecond ticks elapsed. unsigned long msecTicks = (unsigned long)(1000 * elapsedTime / m_data->mClockFrequency.QuadPart); return msecTicks; #else #ifdef __CELLOS_LV2__ uint64_t freq = sys_time_get_timebase_frequency(); double dFreq = ((double)freq) / 1000.0; typedef uint64_t ClockSize; ClockSize newTime; SYS_TIMEBASE_GET(newTime); //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); return (unsigned long int)((double(newTime - m_data->mStartTime)) / dFreq); #else struct timeval currentTime; gettimeofday(¤tTime, 0); return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000 + (currentTime.tv_usec - m_data->mStartTime.tv_usec) / 1000; #endif //__CELLOS_LV2__ #endif } /// Returns the time in us since the last call to reset or since /// the Clock was created. unsigned long long int btClock::getTimeMicroseconds() { #ifdef BT_USE_WINDOWS_TIMERS //see https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx LARGE_INTEGER currentTime, elapsedTime; QueryPerformanceCounter(¤tTime); elapsedTime.QuadPart = currentTime.QuadPart - m_data->mStartTime.QuadPart; elapsedTime.QuadPart *= 1000000; elapsedTime.QuadPart /= m_data->mClockFrequency.QuadPart; return (unsigned long long)elapsedTime.QuadPart; #else #ifdef __CELLOS_LV2__ uint64_t freq = sys_time_get_timebase_frequency(); double dFreq = ((double)freq) / 1000000.0; typedef uint64_t ClockSize; ClockSize newTime; //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); SYS_TIMEBASE_GET(newTime); return (unsigned long int)((double(newTime - m_data->mStartTime)) / dFreq); #else struct timeval currentTime; gettimeofday(¤tTime, 0); return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000000 + (currentTime.tv_usec - m_data->mStartTime.tv_usec); #endif //__CELLOS_LV2__ #endif } unsigned long long int btClock::getTimeNanoseconds() { #ifdef BT_USE_WINDOWS_TIMERS //see https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx LARGE_INTEGER currentTime, elapsedTime; QueryPerformanceCounter(¤tTime); elapsedTime.QuadPart = currentTime.QuadPart - m_data->mStartTime.QuadPart; elapsedTime.QuadPart *= 1000000000; elapsedTime.QuadPart /= m_data->mClockFrequency.QuadPart; return (unsigned long long)elapsedTime.QuadPart; #else #ifdef __CELLOS_LV2__ uint64_t freq = sys_time_get_timebase_frequency(); double dFreq = ((double)freq) / 1e9; typedef uint64_t ClockSize; ClockSize newTime; //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory"); SYS_TIMEBASE_GET(newTime); return (unsigned long int)((double(newTime - m_data->mStartTime)) / dFreq); #else #ifdef __APPLE__ uint64_t ticks = mach_absolute_time() - m_data->mStartTimeNano; static long double conversion = 0.0L; if (0.0L == conversion) { // attempt to get conversion to nanoseconds mach_timebase_info_data_t info; int err = mach_timebase_info(&info); if (err) { btAssert(0); conversion = 1.; } conversion = info.numer / info.denom; } return (ticks * conversion); #else //__APPLE__ #ifdef BT_LINUX_REALTIME timespec ts; clock_gettime(CLOCK_REALTIME, &ts); return 1000000000 * ts.tv_sec + ts.tv_nsec; #else struct timeval currentTime; gettimeofday(¤tTime, 0); return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1e9 + (currentTime.tv_usec - m_data->mStartTime.tv_usec) * 1000; #endif //BT_LINUX_REALTIME #endif //__APPLE__ #endif //__CELLOS_LV2__ #endif } /// Returns the time in s since the last call to reset or since /// the Clock was created. btScalar btClock::getTimeSeconds() { static const btScalar microseconds_to_seconds = btScalar(0.000001); return btScalar(getTimeMicroseconds()) * microseconds_to_seconds; } #ifndef BT_NO_PROFILE static btClock gProfileClock; inline void Profile_Get_Ticks(unsigned long int* ticks) { *ticks = (unsigned long int)gProfileClock.getTimeMicroseconds(); } inline float Profile_Get_Tick_Rate(void) { // return 1000000.f; return 1000.f; } /*************************************************************************************************** ** ** CProfileNode ** ***************************************************************************************************/ /*********************************************************************************************** * INPUT: * * name - pointer to a static string which is the name of this profile node * * parent - parent pointer * * * * WARNINGS: * * The name is assumed to be a static pointer, only the pointer is stored and compared for * * efficiency reasons. * *=============================================================================================*/ CProfileNode::CProfileNode(const char* name, CProfileNode* parent) : Name(name), TotalCalls(0), TotalTime(0), StartTime(0), RecursionCounter(0), Parent(parent), Child(NULL), Sibling(NULL), m_userPtr(0) { Reset(); } void CProfileNode::CleanupMemory() { delete (Child); Child = NULL; delete (Sibling); Sibling = NULL; } CProfileNode::~CProfileNode(void) { CleanupMemory(); } /*********************************************************************************************** * INPUT: * * name - static string pointer to the name of the node we are searching for * * * * WARNINGS: * * All profile names are assumed to be static strings so this function uses pointer compares * * to find the named node. * *=============================================================================================*/ CProfileNode* CProfileNode::Get_Sub_Node(const char* name) { // Try to find this sub node CProfileNode* child = Child; while (child) { if (child->Name == name) { return child; } child = child->Sibling; } // We didn't find it, so add it CProfileNode* node = new CProfileNode(name, this); node->Sibling = Child; Child = node; return node; } void CProfileNode::Reset(void) { TotalCalls = 0; TotalTime = 0.0f; if (Child) { Child->Reset(); } if (Sibling) { Sibling->Reset(); } } void CProfileNode::Call(void) { TotalCalls++; if (RecursionCounter++ == 0) { Profile_Get_Ticks(&StartTime); } } bool CProfileNode::Return(void) { if (--RecursionCounter == 0 && TotalCalls != 0) { unsigned long int time; Profile_Get_Ticks(&time); time -= StartTime; TotalTime += (float)time / Profile_Get_Tick_Rate(); } return (RecursionCounter == 0); } /*************************************************************************************************** ** ** CProfileIterator ** ***************************************************************************************************/ CProfileIterator::CProfileIterator(CProfileNode* start) { CurrentParent = start; CurrentChild = CurrentParent->Get_Child(); } void CProfileIterator::First(void) { CurrentChild = CurrentParent->Get_Child(); } void CProfileIterator::Next(void) { CurrentChild = CurrentChild->Get_Sibling(); } bool CProfileIterator::Is_Done(void) { return CurrentChild == NULL; } void CProfileIterator::Enter_Child(int index) { CurrentChild = CurrentParent->Get_Child(); while ((CurrentChild != NULL) && (index != 0)) { index--; CurrentChild = CurrentChild->Get_Sibling(); } if (CurrentChild != NULL) { CurrentParent = CurrentChild; CurrentChild = CurrentParent->Get_Child(); } } void CProfileIterator::Enter_Parent(void) { if (CurrentParent->Get_Parent() != NULL) { CurrentParent = CurrentParent->Get_Parent(); } CurrentChild = CurrentParent->Get_Child(); } /*************************************************************************************************** ** ** CProfileManager ** ***************************************************************************************************/ CProfileNode gRoots[BT_QUICKPROF_MAX_THREAD_COUNT] = { CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL), CProfileNode("Root", NULL)}; CProfileNode* gCurrentNodes[BT_QUICKPROF_MAX_THREAD_COUNT] = { &gRoots[0], &gRoots[1], &gRoots[2], &gRoots[3], &gRoots[4], &gRoots[5], &gRoots[6], &gRoots[7], &gRoots[8], &gRoots[9], &gRoots[10], &gRoots[11], &gRoots[12], &gRoots[13], &gRoots[14], &gRoots[15], &gRoots[16], &gRoots[17], &gRoots[18], &gRoots[19], &gRoots[20], &gRoots[21], &gRoots[22], &gRoots[23], &gRoots[24], &gRoots[25], &gRoots[26], &gRoots[27], &gRoots[28], &gRoots[29], &gRoots[30], &gRoots[31], &gRoots[32], &gRoots[33], &gRoots[34], &gRoots[35], &gRoots[36], &gRoots[37], &gRoots[38], &gRoots[39], &gRoots[40], &gRoots[41], &gRoots[42], &gRoots[43], &gRoots[44], &gRoots[45], &gRoots[46], &gRoots[47], &gRoots[48], &gRoots[49], &gRoots[50], &gRoots[51], &gRoots[52], &gRoots[53], &gRoots[54], &gRoots[55], &gRoots[56], &gRoots[57], &gRoots[58], &gRoots[59], &gRoots[60], &gRoots[61], &gRoots[62], &gRoots[63], }; int CProfileManager::FrameCounter = 0; unsigned long int CProfileManager::ResetTime = 0; CProfileIterator* CProfileManager::Get_Iterator(void) { int threadIndex = btQuickprofGetCurrentThreadIndex2(); if ((threadIndex < 0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT) return 0; return new CProfileIterator(&gRoots[threadIndex]); } void CProfileManager::CleanupMemory(void) { for (int i = 0; i < BT_QUICKPROF_MAX_THREAD_COUNT; i++) { gRoots[i].CleanupMemory(); } } /*********************************************************************************************** * CProfileManager::Start_Profile -- Begin a named profile * * * * Steps one level deeper into the tree, if a child already exists with the specified name * * then it accumulates the profiling; otherwise a new child node is added to the profile tree. * * * * INPUT: * * name - name of this profiling record * * * * WARNINGS: * * The string used is assumed to be a static string; pointer compares are used throughout * * the profiling code for efficiency. * *=============================================================================================*/ void CProfileManager::Start_Profile(const char* name) { int threadIndex = btQuickprofGetCurrentThreadIndex2(); if ((threadIndex < 0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT) return; if (name != gCurrentNodes[threadIndex]->Get_Name()) { gCurrentNodes[threadIndex] = gCurrentNodes[threadIndex]->Get_Sub_Node(name); } gCurrentNodes[threadIndex]->Call(); } /*********************************************************************************************** * CProfileManager::Stop_Profile -- Stop timing and record the results. * *=============================================================================================*/ void CProfileManager::Stop_Profile(void) { int threadIndex = btQuickprofGetCurrentThreadIndex2(); if ((threadIndex < 0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT) return; // Return will indicate whether we should back up to our parent (we may // be profiling a recursive function) if (gCurrentNodes[threadIndex]->Return()) { gCurrentNodes[threadIndex] = gCurrentNodes[threadIndex]->Get_Parent(); } } /*********************************************************************************************** * CProfileManager::Reset -- Reset the contents of the profiling system * * * * This resets everything except for the tree structure. All of the timing data is reset. * *=============================================================================================*/ void CProfileManager::Reset(void) { gProfileClock.reset(); int threadIndex = btQuickprofGetCurrentThreadIndex2(); if ((threadIndex < 0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT) return; gRoots[threadIndex].Reset(); gRoots[threadIndex].Call(); FrameCounter = 0; Profile_Get_Ticks(&ResetTime); } /*********************************************************************************************** * CProfileManager::Increment_Frame_Counter -- Increment the frame counter * *=============================================================================================*/ void CProfileManager::Increment_Frame_Counter(void) { FrameCounter++; } /*********************************************************************************************** * CProfileManager::Get_Time_Since_Reset -- returns the elapsed time since last reset * *=============================================================================================*/ float CProfileManager::Get_Time_Since_Reset(void) { unsigned long int time; Profile_Get_Ticks(&time); time -= ResetTime; return (float)time / Profile_Get_Tick_Rate(); } #include <stdio.h> void CProfileManager::dumpRecursive(CProfileIterator* profileIterator, int spacing) { profileIterator->First(); if (profileIterator->Is_Done()) return; float accumulated_time = 0, parent_time = profileIterator->Is_Root() ? CProfileManager::Get_Time_Since_Reset() : profileIterator->Get_Current_Parent_Total_Time(); int i; int frames_since_reset = CProfileManager::Get_Frame_Count_Since_Reset(); for (i = 0; i < spacing; i++) printf("."); printf("----------------------------------\n"); for (i = 0; i < spacing; i++) printf("."); printf("Profiling: %s (total running time: %.3f ms) ---\n", profileIterator->Get_Current_Parent_Name(), parent_time); float totalTime = 0.f; int numChildren = 0; for (i = 0; !profileIterator->Is_Done(); i++, profileIterator->Next()) { numChildren++; float current_total_time = profileIterator->Get_Current_Total_Time(); accumulated_time += current_total_time; float fraction = parent_time > SIMD_EPSILON ? (current_total_time / parent_time) * 100 : 0.f; { int i; for (i = 0; i < spacing; i++) printf("."); } printf("%d -- %s (%.2f %%) :: %.3f ms / frame (%d calls)\n", i, profileIterator->Get_Current_Name(), fraction, (current_total_time / (double)frames_since_reset), profileIterator->Get_Current_Total_Calls()); totalTime += current_total_time; //recurse into children } if (parent_time < accumulated_time) { //printf("what's wrong\n"); } for (i = 0; i < spacing; i++) printf("."); printf("%s (%.3f %%) :: %.3f ms\n", "Unaccounted:", parent_time > SIMD_EPSILON ? ((parent_time - accumulated_time) / parent_time) * 100 : 0.f, parent_time - accumulated_time); for (i = 0; i < numChildren; i++) { profileIterator->Enter_Child(i); dumpRecursive(profileIterator, spacing + 3); profileIterator->Enter_Parent(); } } void CProfileManager::dumpAll() { CProfileIterator* profileIterator = 0; profileIterator = CProfileManager::Get_Iterator(); dumpRecursive(profileIterator, 0); CProfileManager::Release_Iterator(profileIterator); } void btEnterProfileZoneDefault(const char* name) { } void btLeaveProfileZoneDefault() { } #else void btEnterProfileZoneDefault(const char* name) { } void btLeaveProfileZoneDefault() { } #endif //BT_NO_PROFILE // clang-format off #if defined(_WIN32) && (defined(__MINGW32__) || defined(__MINGW64__)) #define BT_HAVE_TLS 1 #elif __APPLE__ && !TARGET_OS_IPHONE // TODO: Modern versions of iOS support TLS now with updated version checking. #define BT_HAVE_TLS 1 #elif __linux__ #define BT_HAVE_TLS 1 #elif defined(__FreeBSD__) || defined(__NetBSD__) // TODO: At the moment disabling purposely OpenBSD, albeit tls support exists but not fully functioning #define BT_HAVE_TLS 1 #endif // __thread is broken on Andorid clang until r12b. See // https://github.com/android-ndk/ndk/issues/8 #if defined(__ANDROID__) && defined(__clang__) #if __has_include(<android/ndk-version.h>) #include <android/ndk-version.h> #endif // __has_include(<android/ndk-version.h>) #if defined(__NDK_MAJOR__) && \ ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1))) #undef BT_HAVE_TLS #endif #endif // defined(__ANDROID__) && defined(__clang__) // clang-format on unsigned int btQuickprofGetCurrentThreadIndex2() { const unsigned int kNullIndex = ~0U; #if BT_THREADSAFE return btGetCurrentThreadIndex(); #else #if defined(BT_HAVE_TLS) static __thread unsigned int sThreadIndex = kNullIndex; #elif defined(_WIN32) __declspec(thread) static unsigned int sThreadIndex = kNullIndex; #else unsigned int sThreadIndex = 0; return -1; #endif static int gThreadCounter = 0; if (sThreadIndex == kNullIndex) { sThreadIndex = gThreadCounter++; } return sThreadIndex; #endif //BT_THREADSAFE } static btEnterProfileZoneFunc* bts_enterFunc = btEnterProfileZoneDefault; static btLeaveProfileZoneFunc* bts_leaveFunc = btLeaveProfileZoneDefault; void btEnterProfileZone(const char* name) { (bts_enterFunc)(name); } void btLeaveProfileZone() { (bts_leaveFunc)(); } btEnterProfileZoneFunc* btGetCurrentEnterProfileZoneFunc() { return bts_enterFunc; } btLeaveProfileZoneFunc* btGetCurrentLeaveProfileZoneFunc() { return bts_leaveFunc; } void btSetCustomEnterProfileZoneFunc(btEnterProfileZoneFunc* enterFunc) { bts_enterFunc = enterFunc; } void btSetCustomLeaveProfileZoneFunc(btLeaveProfileZoneFunc* leaveFunc) { bts_leaveFunc = leaveFunc; } CProfileSample::CProfileSample(const char* name) { btEnterProfileZone(name); } CProfileSample::~CProfileSample(void) { btLeaveProfileZone(); }