added hierarchical profiling (needs more cleanup)

avoid dynamic allocations in btRaycastVehicle

src/LinearMath/btQuickprof.cpp

@@ -36,3 +36,266 @@ bool btProfiler::mFirstFileOutput = true;
 btProfiler::BlockTimingMethod btProfiler::mFileOutputMethod;
 unsigned long int btProfiler::mCycleNumber = 0;
 #endif //USE_QUICKPROF
+
+
+/***************************************************************************************************
+**
+** profile.cpp
+**
+** Real-Time Hierarchical Profiling for Game Programming Gems 3
+**
+** by Greg Hjelstrom & Byon Garrabrant
+**
+***************************************************************************************************/
+
+static btClock gProfileClock;
+
+inline void Profile_Get_Ticks(_int64 * ticks)
+{
+	*ticks = 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 )
+{
+	Reset();
+}
+
+
+CProfileNode::~CProfileNode( void )
+{
+	delete Child;
+	delete Sibling;
+}
+
+
+/***********************************************************************************************
+ * 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;
+	gProfileClock.reset();
+
+	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 ) { 
+		__int64 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	CProfileManager::Root( "Root", NULL );
+CProfileNode *	CProfileManager::CurrentNode = &CProfileManager::Root;
+int				CProfileManager::FrameCounter = 0;
+__int64			CProfileManager::ResetTime = 0;
+
+
+/***********************************************************************************************
+ * 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 )
+{
+	if (name != CurrentNode->Get_Name()) {
+		CurrentNode = CurrentNode->Get_Sub_Node( name );
+	} 
+	
+	CurrentNode->Call();
+}
+
+
+/***********************************************************************************************
+ * CProfileManager::Stop_Profile -- Stop timing and record the results.                       *
+ *=============================================================================================*/
+void	CProfileManager::Stop_Profile( void )
+{
+	// Return will indicate whether we should back up to our parent (we may
+	// be profiling a recursive function)
+	if (CurrentNode->Return()) {
+		CurrentNode = CurrentNode->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 )
+{ 
+	Root.Reset();
+    Root.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 )
+{
+	__int64 time;
+	Profile_Get_Ticks(&time);
+	time -= ResetTime;
+	return (float)time / Profile_Get_Tick_Rate();
+}
+
+
+