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/*
* sleep -- sleep for fractions of a second
*
* usage: sleep seconds[.fraction]
*/
/*
Copyright (C) 1999-2020 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"
int
sleep_builtin (list)
WORD_LIST *list;
{
long sec, usec;
char *ep;
int r, mul;
time_t t;
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);
}
r = uconvert(list->word->word, &sec, &usec, &ep);
/* Maybe postprocess conversion failures here based on EP */
if (r) {
fsleep(sec, usec);
QUIT;
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
};
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