X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/97f7cdba9efb1d65c608a271f4caeb1a22a0a39d..a182030b5a8c0db05a1de18ca230b61e76363ebc:/src/xbt/xbt_os_time.c diff --git a/src/xbt/xbt_os_time.c b/src/xbt/xbt_os_time.c index 94de59a99b..3b0a26b2b7 100644 --- a/src/xbt/xbt_os_time.c +++ b/src/xbt/xbt_os_time.c @@ -1,87 +1,138 @@ /* $Id$ */ -/* sysdep.c -- all system dependency */ -/* no system header should be loaded out of this file so that we have only */ -/* one file to check when porting to another OS */ +/* xbt_os_time.c -- portable interface to time-related functions */ -/* Copyright (c) 2004 Martin Quinson. All rights reserved. */ +/* Copyright (c) 2004-2008 The SimGrid team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ #include "xbt/sysdep.h" -#include "xbt/xbt_os_time.h" /* this module */ +#include "xbt/xbt_os_time.h" /* this module */ #include "xbt/log.h" #include "portable.h" +#include /* floor */ -/** @brief like free - @hideinitializer */ -XBT_PUBLIC(void) xbt_free_f(void* p) +#ifdef WIN32 +#include +#endif + +double xbt_os_time(void) { - free(p); -} +#ifdef HAVE_GETTIMEOFDAY + struct timeval tv; + gettimeofday(&tv, NULL); +#elif defined(WIN32) + struct timeval tv; +# if defined(WIN32_WCE) || (_WIN32_WINNT < 0x0400) + struct _timeb tm; + _ftime(&tm); -/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus - disabled in SDL source code */ + tv.tv_sec = tm.time; + tv.tv_usec = tm.millitm * 1000; +# else + FILETIME ft; + unsigned __int64 tm; -/* \defgroup XBT_sysdep All system dependency - * \brief This section describes many macros/functions that can serve as - * an OS abstraction. - */ + GetSystemTimeAsFileTime(&ft); + tm = (unsigned __int64) ft.dwHighDateTime << 32; + tm |= ft.dwLowDateTime; + tm /= 10; + tm -= 11644473600000000ULL; -double xbt_os_time(void) { -#ifdef HAVE_GETTIMEOFDAY - struct timeval tv; + tv.tv_sec = (long) (tm / 1000000L); + tv.tv_usec = (long) (tm % 1000000L); +# endif /* windows version checker */ - gettimeofday(&tv, NULL); +#else /* not windows, no gettimeofday => poor resolution */ + return (double) (time(NULL)); +#endif /* HAVE_GETTIMEOFDAY? */ - return (double)(tv.tv_sec + tv.tv_usec / 1000000.0); -#else - /* Poor resolution */ - return (double)(time(NULL)); -#endif /* HAVE_GETTIMEOFDAY? */ + return (double) (tv.tv_sec + tv.tv_usec / 1000000.0); } -/*XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sysdep, xbt, "System dependency");*/ +void xbt_os_sleep(double sec) +{ +#ifdef HAVE_USLEEP + sleep(sec); + (void) usleep((sec - floor(sec)) * 1000000); + +#elif WIN32 + Sleep((floor(sec) * 1000) + ((sec - floor(sec)) * 1000)); + +#else /* don't have usleep. Use select to sleep less than one second */ + struct timeval timeout; + + + timeout.tv_sec = (unsigned long) (sec); + timeout.tv_usec = (sec - floor(sec)) * 1000000; + + select(0, NULL, NULL, NULL, &timeout); +#endif +} + +/* TSC (tick-level) timers are said to be unreliable on SMP hosts and thus + disabled in SDL source code */ + + +/* \defgroup XBT_sysdep All system dependency + * \brief This section describes many macros/functions that can serve as + * an OS abstraction. + */ struct s_xbt_os_timer { -#ifdef HAVE_GETTIMEOFDAY - struct timeval start,stop; +#ifdef HAVE_POSIX_GETTIME + struct timespec start, stop; +#elif defined(HAVE_GETTIMEOFDAY) + struct timeval start, stop; #else - unsigned long int start,stop; + unsigned long int start, stop; #endif }; xbt_os_timer_t xbt_os_timer_new(void) { - return xbt_new0(struct s_xbt_os_timer,1); + return xbt_new0(struct s_xbt_os_timer, 1); } + void xbt_os_timer_free(xbt_os_timer_t timer) { - free (timer); + free(timer); } + void xbt_os_timer_start(xbt_os_timer_t timer) { -#ifdef HAVE_GETTIMEOFDAY +#ifdef HAVE_POSIX_GETTIME + clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->start)); +#elif defined(HAVE_GETTIMEOFDAY) gettimeofday(&(timer->start), NULL); -#else - timer->start = (unsigned long int)(time(NULL)); +#else + timer->start = (unsigned long int) (time(NULL)); #endif } + void xbt_os_timer_stop(xbt_os_timer_t timer) { -#ifdef HAVE_GETTIMEOFDAY +#ifdef HAVE_POSIX_GETTIME + clock_gettime(CLOCK_PROCESS_CPUTIME_ID,&(timer->stop)); +#elif defined(HAVE_GETTIMEOFDAY) gettimeofday(&(timer->stop), NULL); -#else - timer->stop = (unsigned long int)(time(NULL)); +#else + timer->stop = (unsigned long int) (time(NULL)); #endif } -double xbt_os_timer_elapsed(xbt_os_timer_t timer) { -#ifdef HAVE_GETTIMEOFDAY - return ((double)timer->stop.tv_sec) - ((double)timer->start.tv_sec) + - ((((double)timer->stop.tv_usec) - ((double)timer->start.tv_usec)) / 1000000.0); -#else - return (double)timer->stop - (double)timer->start; + +double xbt_os_timer_elapsed(xbt_os_timer_t timer) +{ +#ifdef HAVE_POSIX_GETTIME + return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + + ((((double) timer->stop.tv_nsec) - + ((double) timer->start.tv_nsec)) / 1e-9); +#elif defined(HAVE_GETTIMEOFDAY) + return ((double) timer->stop.tv_sec) - ((double) timer->start.tv_sec) + + ((((double) timer->stop.tv_usec) - + ((double) timer->start.tv_usec)) / 1000000.0); +#else + return (double) timer->stop - (double) timer->start; #endif } -