void newobj_callback()

in ext/liballocations/liballocations.c [15:37]

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

void newobj_callback(VALUE tracepoint, void* data) {
    rb_trace_arg_t *trace_arg = rb_tracearg_from_tracepoint(tracepoint);

    st_data_t count = 0;

    AllocationState *state = allocation_state_get_struct(state_const);

    VALUE klass = rb_tracearg_defined_class(trace_arg);

    /* These aren't actually allocated so there's no point in tracking them. */
    if ( klass == Qtrue || klass == Qfalse || klass == Qnil ) {
        return;
    }

    // We don't care about sigleton classes since only one of them exists at a
    // time. The logic here is stolen from MRI's implementation of
    // Class#singleton_class? as MRI sadly provides no public C function for
    // this method.
    if ( IS_SINGLETON(klass) ) return;

    st_lookup(state->object_counts, (st_data_t) klass, &count);
    st_insert(state->object_counts, (st_data_t) klass, count + 1);
}