101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
/*
|
|
* sleep -- sleep for fractions of a second
|
|
*
|
|
* usage: sleep seconds[.fraction]
|
|
*/
|
|
|
|
/*
|
|
Copyright (C) 1999-2009 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Bash.
|
|
Bash is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Bash 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Bash. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "bashtypes.h"
|
|
|
|
#if defined (TIME_WITH_SYS_TIME)
|
|
# include <sys/time.h>
|
|
# include <time.h>
|
|
#else
|
|
# if defined (HAVE_SYS_TIME_H)
|
|
# include <sys/time.h>
|
|
# else
|
|
# include <time.h>
|
|
# endif
|
|
#endif
|
|
|
|
#if defined (HAVE_UNISTD_H)
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include "chartypes.h"
|
|
|
|
#include "shell.h"
|
|
#include "builtins.h"
|
|
#include "common.h"
|
|
|
|
#define RETURN(x) \
|
|
do { \
|
|
if (sp) *sp = sec; \
|
|
if (usp) *usp = usec; \
|
|
return (x); \
|
|
} while (0)
|
|
|
|
int
|
|
sleep_builtin (list)
|
|
WORD_LIST *list;
|
|
{
|
|
long sec, usec;
|
|
|
|
if (list == 0) {
|
|
builtin_usage();
|
|
return(EX_USAGE);
|
|
}
|
|
|
|
/* Skip over `--' */
|
|
if (list->word && ISOPTION (list->word->word, '-'))
|
|
list = list->next;
|
|
|
|
if (*list->word->word == '-' || list->next) {
|
|
builtin_usage ();
|
|
return (EX_USAGE);
|
|
}
|
|
|
|
if (uconvert(list->word->word, &sec, &usec)) {
|
|
fsleep(sec, usec);
|
|
return(EXECUTION_SUCCESS);
|
|
}
|
|
|
|
builtin_error("%s: bad sleep interval", list->word->word);
|
|
return (EXECUTION_FAILURE);
|
|
}
|
|
|
|
static char *sleep_doc[] = {
|
|
"Suspend execution for specified period.",
|
|
""
|
|
"sleep suspends execution for a minimum of SECONDS[.FRACTION] seconds.",
|
|
(char *)NULL
|
|
};
|
|
|
|
struct builtin sleep_struct = {
|
|
"sleep",
|
|
sleep_builtin,
|
|
BUILTIN_ENABLED,
|
|
sleep_doc,
|
|
"sleep seconds[.fraction]",
|
|
0
|
|
};
|