jvmtiError RetainedAndShallowSizeByClassesAction::getShallowAndRetainedSizeByClasses()

in src/sizes/retained_size_by_classes.cpp [78:93]

• 14 lines of code
• 5 McCabe index (conditional complexity)

jvmtiError RetainedAndShallowSizeByClassesAction::getShallowAndRetainedSizeByClasses(jobjectArray classesArray,
                                                                                     std::vector<jlong> &shallowSizes,
                                                                                     std::vector<jlong> &retainedSizes) {
    jvmtiError err = tagObjectsOfClasses(classesArray);
    if (!isOk(err)) return err;
    if (shouldStopExecution()) return MEMORY_AGENT_INTERRUPTED_ERROR;

    err = tagHeap();
    if (!isOk(err)) return err;
    if (shouldStopExecution()) return MEMORY_AGENT_INTERRUPTED_ERROR;

    retainedSizes.resize(env->GetArrayLength(classesArray));
    shallowSizes.resize(env->GetArrayLength(classesArray));
    std::pair<jlong *, jlong *> arrays = std::make_pair(shallowSizes.data(), retainedSizes.data());
    return IterateThroughHeap(JVMTI_HEAP_FILTER_UNTAGGED, nullptr, visitObjectForShallowAndRetainedSize, &arrays, "calculate shallow and retained sizes");
}