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| 2 | |
| 3 | * C++ stream style string builder used in KUnit for building messages.
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| 4 | *
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| 5 | * Copyright (C) 2019, Google LLC.
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| 6 | * Author: Brendan Higgins <[email protected]>
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| 7 |
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| 8 |
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| 9 | #ifndef _KUNIT_STRING_STREAM_H
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| 10 | #define _KUNIT_STRING_STREAM_H
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| 11 |
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| 12 | #include <linux/spinlock.h>
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| 13 | #include <linux/types.h>
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| 14 | #include <linux/stdarg.h>
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| 15 |
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| 16 | struct string_stream_fragment {
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| 17 | struct list_head node;
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| 18 | char *fragment;
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| 19 | };
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| 20 |
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| 21 | struct string_stream {
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| 22 | size_t length;
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| 23 | struct list_head fragments;
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| 24 |
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| 25 | spinlock_t lock;
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| 26 | gfp_t gfp;
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| 27 | bool append_newlines;
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| 28 | };
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| 29 |
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| 30 | struct kunit;
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| 31 |
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| 32 | struct string_stream *kunit_alloc_string_stream(struct kunit *test, gfp_t gfp);
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| 33 | void kunit_free_string_stream(struct kunit *test, struct string_stream *stream);
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| 34 |
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| 35 | struct string_stream *alloc_string_stream(gfp_t gfp);
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| 36 | void free_string_stream(struct string_stream *stream);
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| 37 |
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| 38 | int __printf(2, 3) string_stream_add(struct string_stream *stream,
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| 39 | const char *fmt, ...);
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| 40 |
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| 41 | int __printf(2, 0) string_stream_vadd(struct string_stream *stream,
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| 42 | const char *fmt,
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| 43 | va_list args);
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| 44 |
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| 45 | void string_stream_clear(struct string_stream *stream);
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| 46 |
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| 47 | char *string_stream_get_string(struct string_stream *stream);
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| 48 |
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| 49 | int string_stream_append(struct string_stream *stream,
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| 50 | struct string_stream *other);
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| 51 |
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| 52 | bool string_stream_is_empty(struct string_stream *stream);
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| 53 |
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| 54 | void string_stream_destroy(struct string_stream *stream);
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| 55 |
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| 56 | static inline void string_stream_set_append_newlines(struct string_stream *stream,
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| 57 | bool append_newlines)
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| 58 | {
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| 59 | stream->append_newlines = append_newlines;
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| 60 | }
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| 61 |
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| 62 | #endif
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