(First post)
Hi,
Doing an strace on tail -f <file> reveals that it does an fstat every
1 second (fstat, nanosleep 1, fstat nanosleep 1...) for the file size and
reads and writes to stdout whenever the value of st_size returned changes.
A better way of doing this IMHO would be for the logging process to write to
a pty master device and for the reading process to pick it up from the
slave. Tht way you can use async IO (SIGIO / sigaction(2)) or a blocking
POLL on the pts device.
Sapan
On Fri, Mar 29, 2002 at 07:06:44PM +0530, Manish K Arya wrote:
// Hi
// how can i read logs dynamically in C. like if i do tail -f <logfile> output goes
to stdout.i want same kind of mechenism to read log files in C.
//
// bye
// ---
// Manish Kumar Arya
//
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