summaryrefslogtreecommitdiffstats
path: root/examples/loadables/sleep.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--examples/loadables/sleep.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/examples/loadables/sleep.c b/examples/loadables/sleep.c
new file mode 100644
index 0000000..fc2203d
--- /dev/null
+++ b/examples/loadables/sleep.c
@@ -0,0 +1,101 @@
+/*
+ * 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
+};