diff --git a/src/rvprof_memory.c b/src/rvprof_memory.c
index 5ff015a..58b11e0 100644
--- a/src/rvprof_memory.c
+++ b/src/rvprof_memory.c
@@ -114,3 +114,88 @@ IMPLEMENT_DYNAMIC_ARRAY(function_stats_t, function_stats, INITIAL_FUNCTIONS, cle
 IMPLEMENT_DYNAMIC_ARRAY(stack_info_t, stack_info, INITIAL_STACKS, cleanup_stack_info)
 
 
+
+// SPECIALIZED ARRAY OPERATIONS
+// maybe also move to macros to remove reduncancies later
+
+int rvprof_memory_add_stack_id_to_function(int func_id, int stack_id) {
+    if (func_id < 0 || func_id >= g_rvprof.functions.size || stack_id < 0) {
+        return RVPROF_ERROR_INVALID_STATE;
+    }
+    
+    function_stats_t* stats = &g_rvprof.functions.data[func_id];
+
+    for (int i = 0; i < stats->num_stack_ids; i++) {
+        if (stats->stack_ids[i] == stack_id) {
+            return RVPROF_SUCCESS; // already exists
+        }
+    }
+    
+    // ensure capacity for new stack ID
+    if (stats->num_stack_ids >= stats->max_stack_ids) {
+        int new_size = stats->max_stack_ids == 0 ? 4 : stats->max_stack_ids * 2;
+        size_t old_size = stats->max_stack_ids * sizeof(int);
+        size_t new_size_bytes = new_size * sizeof(int);
+        int* new_stack_ids = rvprof_realloc(stats->stack_ids, old_size, new_size_bytes);
+        if (!new_stack_ids) {
+            return RVPROF_ERROR_MEMORY;
+        }
+        stats->stack_ids = new_stack_ids;
+        stats->max_stack_ids = new_size;
+    }
+    
+    // add new stack ID
+    stats->stack_ids[stats->num_stack_ids] = stack_id;
+    stats->num_stack_ids++;
+    
+    return RVPROF_SUCCESS;
+}
+
+int rvprof_memory_add_caller_to_function(int func_id, const char* caller) {
+    if (func_id < 0 || func_id >= g_rvprof.functions.size || !caller) {
+        return RVPROF_ERROR_INVALID_STATE;
+    }
+    
+    function_stats_t* stats = &g_rvprof.functions.data[func_id];
+    
+    for (int i = 0; i < stats->num_callers; i++) {
+        if (strcmp(stats->callers[i], caller) == 0) {
+            return RVPROF_SUCCESS; // already exists
+        }
+    }
+    
+    // ensure capacity for new caller
+    if (stats->num_callers >= stats->max_callers) {
+        int new_size = stats->max_callers == 0 ? 4 : stats->max_callers * 2;
+        size_t old_size = stats->max_callers * sizeof(char*);
+        size_t new_size_bytes = new_size * sizeof(char*);
+        char** new_callers = rvprof_realloc(stats->callers, old_size, new_size_bytes);
+        if (!new_callers) {
+            return RVPROF_ERROR_MEMORY;
+        }
+        stats->callers = new_callers;
+        stats->max_callers = new_size;
+    }
+
+    char* caller_copy = rvprof_malloc(strlen(caller) + 1);
+    if (!caller_copy) {
+        return RVPROF_ERROR_MEMORY;
+    }
+    strcpy(caller_copy, caller);
+    
+    stats->callers[stats->num_callers] = caller_copy;
+    stats->num_callers++;
+    
+    // update the caller field based on number of callers
+    if (stats->num_callers == 1) {
+        // only one caller: use it
+        strncpy(stats->caller, caller, MAX_NAME_LEN - 1);
+        stats->caller[MAX_NAME_LEN - 1] = '\0';
+    } else {
+        // multiple callers: use "various"
+        strncpy(stats->caller, "various", MAX_NAME_LEN - 1);
+        stats->caller[MAX_NAME_LEN - 1] = '\0';
+    }
+    
+    return RVPROF_SUCCESS;
+}
\ No newline at end of file