Mail Archives: djgpp/1993/02/11/10:30:22
Hello DJ (and J. Alan),
I have found the resolution of the usleep() function of
one (whole) second a bit too long for some purposes.
A better resolution of 55 milli-seconds can be achieved by
replacing '$DJGPP/libsrc/c/gen/usleep.c' by the following code.
PS: Why is the prototype for 'clock()' in <std.h> and not in <time.h> ?
Pieter Kunst (kunst AT prl DOT philips DOT nl)
/* This is file usleep.c */
/*
** Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.dj", available from DJ Delorie at the address above.
** A copy of "copying.dj" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.dj".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <time.h>
usleep(unsigned int useconds)
{
clock_t t0 = clock();
while (clock() - t0 < useconds) ;
}
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