3 /* sysdep.c -- all system dependency */
4 /* no system header should be loaded out of this file so that we have only */
5 /* one file to check when porting to another OS */
7 /* Copyright (c) 2004 Martin Quinson. All rights reserved. */
9 /* This program is free software; you can redistribute it and/or modify it
10 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "xbt/sysdep.h"
13 #include "xbt/xbt_os_time.h" /* this module */
20 XBT_PUBLIC(void) xbt_free_f(void* p)
26 /* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus
27 disabled in SDL source code */
30 /* \defgroup XBT_sysdep All system dependency
31 * \brief This section describes many macros/functions that can serve as
36 double xbt_os_time(void) {
37 #ifdef HAVE_GETTIMEOFDAY
40 gettimeofday(&tv, NULL);
42 return (double)(tv.tv_sec + tv.tv_usec / 1000000.0);
45 /* return (double)(time(NULL));*/
46 //#endif /* HAVE_GETTIMEOFDAY? */
49 /*XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, xbt, "System dependency");*/
52 struct s_xbt_os_timer {
53 #ifdef HAVE_GETTIMEOFDAY
54 struct timeval start,stop;
56 unsigned long int start,stop;
60 xbt_os_timer_t xbt_os_timer_new(void) {
61 return xbt_new0(struct s_xbt_os_timer,1);
63 void xbt_os_timer_free(xbt_os_timer_t timer) {
66 void xbt_os_timer_start(xbt_os_timer_t timer) {
67 #ifdef HAVE_GETTIMEOFDAY
68 gettimeofday(&(timer->start), NULL);
70 timer->start = (unsigned long int)(time(NULL));
73 void xbt_os_timer_stop(xbt_os_timer_t timer) {
74 #ifdef HAVE_GETTIMEOFDAY
75 gettimeofday(&(timer->stop), NULL);
77 timer->stop = (unsigned long int)(time(NULL));
80 double xbt_os_timer_elapsed(xbt_os_timer_t timer) {
81 #ifdef HAVE_GETTIMEOFDAY
82 return ((double)timer->stop.tv_sec) - ((double)timer->start.tv_sec) +
83 ((((double)timer->stop.tv_usec) - ((double)timer->start.tv_usec)) / 1000000.0);
85 return (double)timer->stop - (double)timer->start;