void
out_of_memory(void)
{
- ovs_fatal(0, "virtual memory exhausted");
+ ovs_abort(0, "virtual memory exhausted");
}
void *
}
}
+/* Prints 'format' on stderr, formatting it like printf() does. If 'err_no' is
+ * nonzero, then it is formatted with ovs_retval_to_string() and appended to
+ * the message inside parentheses. Then, terminates with abort().
+ *
+ * This function is preferred to ovs_fatal() in a situation where it would make
+ * sense for a monitoring process to restart the daemon.
+ *
+ * 'format' should not end with a new-line, because this function will add one
+ * itself. */
void
-ovs_fatal(int err_no, const char *format, ...)
+ovs_abort(int err_no, const char *format, ...)
{
va_list args;
- fprintf(stderr, "%s: ", program_name);
va_start(args, format);
- vfprintf(stderr, format, args);
+ ovs_error_valist(err_no, format, args);
va_end(args);
- if (err_no != 0)
- fprintf(stderr, " (%s)", ovs_retval_to_string(err_no));
- putc('\n', stderr);
+ abort();
+}
+
+/* Prints 'format' on stderr, formatting it like printf() does. If 'err_no' is
+ * nonzero, then it is formatted with ovs_retval_to_string() and appended to
+ * the message inside parentheses. Then, terminates with EXIT_FAILURE.
+ *
+ * 'format' should not end with a new-line, because this function will add one
+ * itself. */
+void
+ovs_fatal(int err_no, const char *format, ...)
+{
+ va_list args;
+
+ va_start(args, format);
+ ovs_fatal_valist(err_no, format, args);
+}
+
+/* Same as ovs_fatal() except that the arguments are supplied as a va_list. */
+void
+ovs_fatal_valist(int err_no, const char *format, va_list args)
+{
+ ovs_error_valist(err_no, format, args);
exit(EXIT_FAILURE);
}
+/* Prints 'format' on stderr, formatting it like printf() does. If 'err_no' is
+ * nonzero, then it is formatted with ovs_retval_to_string() and appended to
+ * the message inside parentheses.
+ *
+ * 'format' should not end with a new-line, because this function will add one
+ * itself. */
void
ovs_error(int err_no, const char *format, ...)
{
- int save_errno = errno;
va_list args;
- fprintf(stderr, "%s: ", program_name);
va_start(args, format);
- vfprintf(stderr, format, args);
+ ovs_error_valist(err_no, format, args);
va_end(args);
+}
+
+/* Same as ovs_error() except that the arguments are supplied as a va_list. */
+void
+ovs_error_valist(int err_no, const char *format, va_list args)
+{
+ int save_errno = errno;
+
+ fprintf(stderr, "%s: ", program_name);
+ vfprintf(stderr, format, args);
if (err_no != 0) {
fprintf(stderr, " (%s)", ovs_retval_to_string(err_no));
}
* its return value. (Note that every scalar type can be implicitly
* converted to bool.) */
void ignore(bool x OVS_UNUSED) { }
+
+/* Returns an appropriate delimiter for inserting just before the 0-based item
+ * 'index' in a list that has 'total' items in it. */
+const char *
+english_list_delimiter(size_t index, size_t total)
+{
+ return (index == 0 ? ""
+ : index < total - 1 ? ", "
+ : total > 2 ? ", and "
+ : " and ");
+}