1 /* SPDX-License-Identifier: GPL-2.0 */
3 * C++ stream style string builder used in KUnit for building messages.
5 * Copyright (C) 2019, Google LLC.
6 * Author: Brendan Higgins <brendanhiggins@google.com>
9 #ifndef _KUNIT_STRING_STREAM_H
10 #define _KUNIT_STRING_STREAM_H
12 #include <linux/spinlock.h>
13 #include <linux/types.h>
14 #include <linux/stdarg.h>
16 struct string_stream_fragment {
17 struct list_head node;
21 struct string_stream {
23 struct list_head fragments;
24 /* length and fragments are protected by this lock */
32 struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp);
34 int __printf(2, 3) string_stream_add(struct string_stream *stream,
35 const char *fmt, ...);
37 int __printf(2, 0) string_stream_vadd(struct string_stream *stream,
41 char *string_stream_get_string(struct string_stream *stream);
43 int string_stream_append(struct string_stream *stream,
44 struct string_stream *other);
46 bool string_stream_is_empty(struct string_stream *stream);
48 void string_stream_destroy(struct string_stream *stream);
50 #endif /* _KUNIT_STRING_STREAM_H */