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Date: Wed, 21 Jul 1999 16:20:48 -0700
From: "Jeff Hagendaz" <jeffhdz@my-Deja.com>
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Hi,

I asked this in -hackers, but didn't get an answer.
Guess it is too simple to quanlify into -hackers, 
I am moving it here.  Your help is highly appreciated.

-- Jeff

Hi,

I am reading a Linux device driver.  At some point it
polls a device to check if it is ready.  The timeout
is set to 5 second.  It uses the system jiffies to 
count the time:

    u32 time_out = jiffies + 5 * HZ;
    for (;;) {
        /* code to check if dev is ready */
        ........
        if (ready) break;
        if (intr_count == 0) schedule();
        if (jiffies > time_out) return ERROR;
    }

How do I implement such polling in FreeBSD?  Thanks.

--Jeff





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