diff options
-rw-r--r-- | include/ChangeLog | 2 | ||||
-rw-r--r-- | include/timeval-utils.h | 40 | ||||
-rw-r--r-- | libiberty/ChangeLog | 6 | ||||
-rw-r--r-- | libiberty/timeval-utils.c | 87 |
4 files changed, 135 insertions, 0 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index a09c287..342ae36 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,5 +1,7 @@ 2011-09-28 Doug Evans <dje@google.com> + * timeval-utils.h: New file. + * libiberty.h (countargv): Declare. 2011-09-26 Cary Coutant <ccoutant@google.com> diff --git a/include/timeval-utils.h b/include/timeval-utils.h new file mode 100644 index 0000000..1caf9b3 --- /dev/null +++ b/include/timeval-utils.h @@ -0,0 +1,40 @@ +/* Basic struct timeval utilities. + Copyright (C) 2011 Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If not, +write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +#ifndef TIMEVAL_UTILS_H +#define TIMEVAL_UTILS_H + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/* forward decl */ +struct timeval; + +extern void timeval_add (struct timeval *result, + const struct timeval *a, const struct timeval *b); + +extern void timeval_sub (struct timeval *result, + const struct timeval *a, const struct timeval *b); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* TIMEVAL_UTILS_H */ diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index ccee83f..59460e4 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,5 +1,11 @@ 2011-09-28 Doug Evans <dje@google.com> + * timeval-utils.c: New file. + * Makefile.in (CFILES): Add it. + (REQUIRED_OFILES): Add timeval-utils.$(objext). + (INSTALLED_HEADERS): Add timeval-utils.h. + (timeval-utils.$(objext)): Add rule. + * argv.c (countargv): New function. 2011-09-23 Cary Coutant <ccoutant@google.com> diff --git a/libiberty/timeval-utils.c b/libiberty/timeval-utils.c new file mode 100644 index 0000000..4c9f6a8 --- /dev/null +++ b/libiberty/timeval-utils.c @@ -0,0 +1,87 @@ +/* Basic struct timeval utilities. + Copyright (C) 2011 Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If not, +write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +#include "config.h" + +/* On some systems (such as WindISS), you must include <sys/types.h> + to get the definition of "time_t" before you include <time.h>. */ +#include <sys/types.h> + +#ifdef TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# ifdef HAVE_TIME_H +# include <time.h> +# endif +# endif +#endif + +#include "timeval-utils.h" + +/* + +@deftypefn Extension void timeval_add (struct timeval *@var{a}, @ + struct timeval *@var{b}, struct timeval *@var{result}) + +Adds @var{a} to @var{b} and stores the result in @var{result}. + +@end deftypefn + +*/ + +void +timeval_add (struct timeval *result, + const struct timeval *a, const struct timeval *b) +{ + result->tv_sec = a->tv_sec + b->tv_sec; + result->tv_usec = a->tv_usec + b->tv_usec; + if (result->tv_usec >= 1000000) + { + ++result->tv_sec; + result->tv_usec -= 1000000; + } +} + +/* + +@deftypefn Extension void timeval_sub (struct timeval *@var{a}, @ + struct timeval *@var{b}, struct timeval *@var{result}) + +Subtracts @var{b} from @var{a} and stores the result in @var{result}. + +@end deftypefn + +*/ + +void +timeval_sub (struct timeval *result, + const struct timeval *a, const struct timeval *b) +{ + result->tv_sec = a->tv_sec - b->tv_sec; + result->tv_usec = a->tv_usec - b->tv_usec; + if (result->tv_usec < 0) + { + --result->tv_sec; + result->tv_usec += 1000000; + } +} |