From b56c1a3ab7c3215b5ca7d3e2a2a5473c35e16529 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 14 Aug 2003 13:08:58 +0000 Subject: 2003-08-14 Joel Sherrill PR 92/rtems * Makefile.am, src/alarm.c, src/psignal.c: Added ualarm() and usleep(). * src/ualarm.c, src/usleep.c: New files. --- cpukit/posix/src/usleep.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 cpukit/posix/src/usleep.c (limited to 'cpukit/posix/src/usleep.c') diff --git a/cpukit/posix/src/usleep.c b/cpukit/posix/src/usleep.c new file mode 100644 index 0000000000..6753cfe713 --- /dev/null +++ b/cpukit/posix/src/usleep.c @@ -0,0 +1,34 @@ +/* + * XXX 3.4.3 Delay Process Execution, P1003.1b-1993, p. 81 + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include + +#include +#include + + +unsigned usleep( + unsigned int useconds +) +{ + struct timespec tp; + struct timespec tm; + unsigned remaining; + + tp.tv_sec = useconds / TOD_MICROSECONDS_PER_SECOND; + tp.tv_nsec = (useconds % TOD_MICROSECONDS_PER_SECOND) * 1000; + + nanosleep( &tp, &tm ); + + remaining = tm.tv_sec * TOD_MICROSECONDS_PER_SECOND; + remaining += tm.tv_nsec / 1000; + return remaining; /* seconds remaining */ +} -- cgit v1.2.3