added uiGetAllocSize()

example.cpp

@@ -1220,6 +1220,9 @@ int main()
 	double c = 0.0;
 	int total = 0;
 
+	int peak_items = 0;
+	unsigned int peak_alloc = 0;
+
 	while (!glfwWindowShouldClose(window))
 	{
 		double mx, my;
@@ -1242,6 +1245,8 @@ int main()
 		nvgBeginFrame(_vg, winWidth, winHeight, pxRatio);
 
         draw(_vg, winWidth, winHeight);
+        peak_items = (peak_items > uiGetItemCount())?peak_items:uiGetItemCount();
+        peak_alloc = (peak_alloc > uiGetAllocSize())?peak_alloc:uiGetAllocSize();
 
 		nvgEndFrame(_vg);
         double t2 = glfwGetTime();
@@ -1256,6 +1261,8 @@ int main()
 		glfwSwapBuffers(window);
 		glfwPollEvents();
 	}
+	printf("Peak item count: %i (%u bytes)\nPeak allocated handles: %u bytes\n",
+	        peak_items, peak_items * sizeof(UIitem), peak_alloc);
 
     uiDestroyContext(uictx);
 

oui.h

@@ -565,7 +565,7 @@ OUI_EXPORT void uiSetHandle(int item, void *handle);
 // as the handle to the item.
 // The memory of the pointer is managed by the UI context and released
 // upon the next call to uiClear()
-OUI_EXPORT void *uiAllocHandle(int item, int size);
+OUI_EXPORT void *uiAllocHandle(int item, unsigned int size);
 
 // set the global handler callback for interactive items.
 // the handler will be called for each item whose event flags are set using
@@ -630,6 +630,9 @@ OUI_EXPORT int uiNextSibling(int item);
 // return the total number of allocated items
 OUI_EXPORT int uiGetItemCount();
 
+// return the total bytes that have been allocated by uiAllocHandle()
+OUI_EXPORT unsigned int uiGetAllocSize();
+
 // return the current state of the item. This state is only valid after
 // a call to uiProcess().
 // The returned value is one of UI_COLD, UI_HOT, UI_ACTIVE, UI_FROZEN.
@@ -828,8 +831,8 @@ struct UIcontext {
     int clicks;
 
     int count;    
-    int datasize;
     int eventcount;
+    unsigned int datasize;
 
     UIitem *items;
     unsigned char *data;
@@ -988,12 +991,16 @@ unsigned int uiGetModifier() {
     return ui_context->active_modifier;
 }
 
-// return the total number of allocated items
-OUI_EXPORT int uiGetItemCount() {
+int uiGetItemCount() {
     assert(ui_context);
     return ui_context->count;
 }
 
+unsigned int uiGetAllocSize() {
+    assert(ui_context);
+    return ui_context->datasize;
+}
+
 UIitem *uiItemPtr(int item) {
     assert(ui_context && (item >= 0) && (item < ui_context->count));
     return ui_context->items + item;
@@ -1043,7 +1050,7 @@ void uiClearState() {
 
 int uiItem() {
     assert(ui_context);
-    assert(ui_context->count < ui_context->item_capacity);
+    assert(ui_context->count < (int)ui_context->item_capacity);
     int idx = ui_context->count++;
     UIitem *item = uiItemPtr(idx);
     memset(item, 0, sizeof(UIitem));
@@ -1500,7 +1507,7 @@ int uiNextSibling(int item) {
     return uiItemPtr(item)->nextitem;
 }
 
-void *uiAllocHandle(int item, int size) {
+void *uiAllocHandle(int item, unsigned int size) {
     assert((size > 0) && (size < UI_MAX_DATASIZE));
     UIitem *pitem = uiItemPtr(item);
     assert(pitem->handle == NULL);