static void do_catch_up()

in speakup/speakup_apollo.c [125:191]

• 65 lines of code
• 8 McCabe index (conditional complexity)

static void do_catch_up(struct spk_synth *synth)
{
	u_char ch;
	unsigned long flags;
	unsigned long jiff_max;
	struct var_t *jiffy_delta;
	struct var_t *delay_time;
	struct var_t *full_time;
	int full_time_val = 0;
	int delay_time_val = 0;
	int jiffy_delta_val = 0;

	jiffy_delta = spk_get_var(JIFFY);
	delay_time = spk_get_var(DELAY);
	full_time = spk_get_var(FULL);
	spin_lock_irqsave(&speakup_info.spinlock, flags);
	jiffy_delta_val = jiffy_delta->u.n.value;
	spin_unlock_irqrestore(&speakup_info.spinlock, flags);
	jiff_max = jiffies + jiffy_delta_val;

	while (!kthread_should_stop()) {
		spin_lock_irqsave(&speakup_info.spinlock, flags);
		jiffy_delta_val = jiffy_delta->u.n.value;
		full_time_val = full_time->u.n.value;
		delay_time_val = delay_time->u.n.value;
		if (speakup_info.flushing) {
			speakup_info.flushing = 0;
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			synth->flush(synth);
			continue;
		}
		synth_buffer_skip_nonlatin1();
		if (synth_buffer_empty()) {
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			break;
		}
		ch = synth_buffer_peek();
		set_current_state(TASK_INTERRUPTIBLE);
		full_time_val = full_time->u.n.value;
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
		if (!synth->io_ops->synth_out(synth, ch)) {
			synth->io_ops->tiocmset(synth, 0, UART_MCR_RTS);
			synth->io_ops->tiocmset(synth, UART_MCR_RTS, 0);
			schedule_timeout(msecs_to_jiffies(full_time_val));
			continue;
		}
		if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
			spin_lock_irqsave(&speakup_info.spinlock, flags);
			jiffy_delta_val = jiffy_delta->u.n.value;
			full_time_val = full_time->u.n.value;
			delay_time_val = delay_time->u.n.value;
			spin_unlock_irqrestore(&speakup_info.spinlock, flags);
			if (synth->io_ops->synth_out(synth, synth->procspeech))
				schedule_timeout(msecs_to_jiffies
						 (delay_time_val));
			else
				schedule_timeout(msecs_to_jiffies
						 (full_time_val));
			jiff_max = jiffies + jiffy_delta_val;
		}
		set_current_state(TASK_RUNNING);
		spin_lock_irqsave(&speakup_info.spinlock, flags);
		synth_buffer_getc();
		spin_unlock_irqrestore(&speakup_info.spinlock, flags);
	}
	synth->io_ops->synth_out(synth, PROCSPEECH);
}