97 lines
2 KiB
C
97 lines
2 KiB
C
/*
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* sleep -- sleep for fractions of a second
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*
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* usage: sleep seconds[.fraction]
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*/
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/*
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Copyright (C) 1999-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "bashtypes.h"
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#if defined (TIME_WITH_SYS_TIME)
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# include <sys/time.h>
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# include <time.h>
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#else
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# if defined (HAVE_SYS_TIME_H)
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#if defined (HAVE_UNISTD_H)
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include "chartypes.h"
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#include "shell.h"
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#include "builtins.h"
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#include "common.h"
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#define RETURN(x) \
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do { \
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if (sp) *sp = sec; \
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if (usp) *usp = usec; \
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return (x); \
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} while (0)
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int
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sleep_builtin (list)
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WORD_LIST *list;
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{
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long sec, usec;
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if (list == 0) {
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builtin_usage();
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return(EX_USAGE);
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}
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if (*list->word->word == '-' || list->next) {
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builtin_usage ();
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return (EX_USAGE);
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}
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if (uconvert(list->word->word, &sec, &usec)) {
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fsleep(sec, usec);
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return(EXECUTION_SUCCESS);
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}
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builtin_error("%s: bad sleep interval", list->word->word);
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return (EXECUTION_FAILURE);
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}
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static char *sleep_doc[] = {
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"Suspend execution for specified period.",
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""
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"sleep suspends execution for a minimum of SECONDS[.FRACTION] seconds.",
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(char *)NULL
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};
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struct builtin sleep_struct = {
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"sleep",
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sleep_builtin,
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BUILTIN_ENABLED,
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sleep_doc,
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"sleep seconds[.fraction]",
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0
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};
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