While the review for JDK-8016270 was being done, it was noted that there are some places where codecache allocation failures are detected, but they do not trigger invoking the sweeper by calling CompileBroker::handle_full_code_cache().

For example, Compile::init_buffer() and several other similar places in output.cpp:

  // Have we run out of code space?
  if ((cb->blob() == NULL) || (!CompileBroker::should_compile_new_jobs())) {
    C->record_failure("CodeCache is full");
    return NULL;
  }

And in Compile::init_scratch_buffer_blob():

    if (scratch_buffer_blob() == NULL) {
      // Let CompilerBroker disable further compilations.
      record_failure("Not enough space for scratch buffer in CodeCache");
      return;
    }