Function heartbeats_simple_sys::heartbeat_acc_init

pub unsafe extern "C" fn heartbeat_acc_init(
    hb: *mut heartbeat_acc_context, 
    window_size: uint64_t, 
    window_buffer: *mut heartbeat_acc_record, 
    log_fd: c_int, 
    hwc_callback: heartbeat_acc_window_complete
) -> c_int