Add dynamic array structure

src/rvprof_internal.h

@@ -71,6 +71,18 @@ typedef struct {
     double inclusive_percent;
 } function_stats_t;
 
+// dynamic array structure (could switch to a more sophisticated container + template if we would move to C++ at some point)
+#define DECLARE_DYNAMIC_ARRAY(type, name) \
+typedef struct { \
+    type* data; \
+    int size; \
+    int capacity; \
+} name##_array_t;
+
+DECLARE_DYNAMIC_ARRAY(region_t, region);
+DECLARE_DYNAMIC_ARRAY(function_stats_t, function_stats);
+DECLARE_DYNAMIC_ARRAY(symbol_entry_t, symbol);
+
 #ifdef __cplusplus
 }
 #endif