3 /* time - time related syscal wrappers */
5 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include <math.h> /* floor */
14 #include "xbt/sysdep.h"
16 #include "gras/virtu.h"
17 #include "xbt/xbt_os_time.h" /* private */
19 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(gras_virtu);
20 double xbt_os_time(void) {
21 #ifdef HAVE_GETTIMEOFDAY
24 gettimeofday(&tv, NULL);
26 return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
29 return (double)(time(NULL));
30 #endif /* HAVE_GETTIMEOFDAY? */
32 void xbt_os_sleep(double sec) {
34 DEBUG1("Do sleep %f sec", sec);
36 (void)usleep( (sec - floor(sec)) * 1000000);
39 DEBUG1("Do sleep %f sec", sec);
41 Sleep((floor(sec) * 1000) +((sec - floor(sec)) * 1000));
44 #else /* don't have usleep. Use select to sleep less than one second */
45 struct timeval timeout;
47 DEBUG1("Do sleep %f sec", sec);
49 timeout.tv_sec = (unsigned long)(sec);
50 timeout.tv_usec = (sec - floor(sec)) * 1000000;
52 select(0, NULL, NULL, NULL, &timeout);