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Date: Sat, 7 Sep 1996 20:43:54 -0500 (CDT)
From: Giritharan Rashiyamany <giri@aic1.accesscom.com>
To: freebsd-hackers@freebsd.org
cc: terry@lambert.org
Subject: interrupts in software
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Hi Hackers,
	I need to implement an interrupt in software that'll do the following.
	It's functionality is similar to ipintr() call which will basically
	enqueue packets, and the continue processing until there aren't any more
	packets to process. In essence, myintr() should be activated if not active and
	subsequent calls to it should not activate a second instance. If myintr()
	is not active, then a call to it will activate it. 


#define ACTIVE_YES	0
#define ACTIVE_NO	1

int state = ACTIVE+NO; 


	void
	myintr()
	{

		if(state = ACTIVE_YES)
			return;
		while (queue_is_not_empty())
		{
			process();
		}
		state = ACIVE_NO;
		return;
	}


something like this. ANy help appreciated

DMC