Function js::jsapi::JS_IterateCompartments

pub unsafe extern "C" fn JS_IterateCompartments(
    rt: *mut JSRuntime, 
    data: *mut c_void, 
    compartmentCallback: JSIterateCompartmentCallback
)

This function calls |compartmentCallback| on every compartment. Beware that there is no guarantee that the compartment will survive after the callback returns. Also, barriers are disabled via the TraceSession.