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To: Mike Smith <mike@smith.net.au>
cc: Ken Key <key@cs.utk.edu>, freebsd-mobile@freebsd.org
Subject: Re: More on APM suspened/calltodo patch. 
From: Ken Key <key@cs.utk.edu>
In-reply-to: Your message of Wed, 31 Dec 1997 14:03:48 +1030.
             <199712310333.OAA00537@word.smith.net.au> 
Date: Thu, 01 Jan 1998 12:50:31 -0500
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> The "right" thing to do here appears to me to wait until I can actually 
> get a working -current kernel for my laptop, verify that the new 
> technique actually works (what tests did you do?), and then push your 
> older version back into 2.2.


OK, sounds good to me.  To test if the APM suspend/timeout code was working, 
I just ran the following test program and suspended the machine, waited a 
few minutes, resumed, and then watched to see if the select() timeout fired
immediately or waited the amount of time.

=================================>8 cut here 8<===========================

/*
 * timer_test.c testing interaction between timer operation on select and APM.
 */
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>

int
main(int argc, char *argv[])
{
    int cc;
    struct timeval timeout;
    time_t   timenow;
    char *str_p;

    /* Test timeout of 45 seconds */
    timeout.tv_sec = 45;
    timeout.tv_usec = 0;

    do {
	timenow = time(NULL);
	str_p = ctime(&timenow);
	str_p[strlen(str_p)-1] = ' ';
	printf("Time entering select: %s (timeout=%d)\n", 
	        str_p, timeout.tv_sec);

	cc = select(0, NULL, NULL, NULL, &timeout);

	timenow = time(NULL);
	str_p = ctime(&timenow);
	str_p[strlen(str_p)-1] = ' ';
	printf("Time exiting select:  %s (cc= %d)\n\n", 
	       str_p, cc);

    } while(1);
}

=================================>8 cut here 8<===========================
--
Ken Key (key@cs.utk.edu)
Univ. of Tennessee, Knoxville