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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* | |
3 | * C++ stream style string builder used in KUnit for building messages. | |
4 | * | |
5 | * Copyright (C) 2019, Google LLC. | |
6 | * Author: Brendan Higgins <brendanhiggins@google.com> | |
7 | */ | |
8 | ||
9 | #ifndef _KUNIT_STRING_STREAM_H | |
10 | #define _KUNIT_STRING_STREAM_H | |
11 | ||
12 | #include <linux/spinlock.h> | |
13 | #include <linux/types.h> | |
c0891ac1 | 14 | #include <linux/stdarg.h> |
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15 | |
16 | struct string_stream_fragment { | |
17 | struct kunit *test; | |
18 | struct list_head node; | |
19 | char *fragment; | |
20 | }; | |
21 | ||
22 | struct string_stream { | |
23 | size_t length; | |
24 | struct list_head fragments; | |
25 | /* length and fragments are protected by this lock */ | |
26 | spinlock_t lock; | |
27 | struct kunit *test; | |
28 | gfp_t gfp; | |
29 | }; | |
30 | ||
31 | struct kunit; | |
32 | ||
33 | struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp); | |
34 | ||
35 | int __printf(2, 3) string_stream_add(struct string_stream *stream, | |
36 | const char *fmt, ...); | |
37 | ||
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38 | int __printf(2, 0) string_stream_vadd(struct string_stream *stream, |
39 | const char *fmt, | |
40 | va_list args); | |
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41 | |
42 | char *string_stream_get_string(struct string_stream *stream); | |
43 | ||
44 | int string_stream_append(struct string_stream *stream, | |
45 | struct string_stream *other); | |
46 | ||
47 | bool string_stream_is_empty(struct string_stream *stream); | |
48 | ||
49 | int string_stream_destroy(struct string_stream *stream); | |
50 | ||
51 | #endif /* _KUNIT_STRING_STREAM_H */ |