1// SPDX-License-Identifier: GPL-2.0
 2#include "util.h"
 3#include "../util/debug.h"
 4#include <stdio.h>
 5
 6/*
 7 * Default error logging functions
 8 */
 9static int perf_stdio__error(const char *format, va_list args)
10{
11	fprintf(stderr, "Error:\n");
12	vfprintf(stderr, format, args);
13	return 0;
14}
15
16static int perf_stdio__warning(const char *format, va_list args)
17{
18	fprintf(stderr, "Warning:\n");
19	vfprintf(stderr, format, args);
20	return 0;
21}
22
23static struct perf_error_ops default_eops =
24{
25	.error		= perf_stdio__error,
26	.warning	= perf_stdio__warning,
27};
28
29static struct perf_error_ops *perf_eops = &default_eops;
30
31
32int ui__error(const char *format, ...)
33{
34	int ret;
35	va_list args;
36
37	va_start(args, format);
38	ret = perf_eops->error(format, args);
39	va_end(args);
40
41	return ret;
42}
43
44int ui__warning(const char *format, ...)
45{
46	int ret;
47	va_list args;
48
49	va_start(args, format);
50	ret = perf_eops->warning(format, args);
51	va_end(args);
52
53	return ret;
54}
55
56/**
57 * perf_error__register - Register error logging functions
58 * @eops: The pointer to error logging function struct
59 *
60 * Register UI-specific error logging functions. Before calling this,
61 * other logging functions should be unregistered, if any.
62 */
63int perf_error__register(struct perf_error_ops *eops)
64{
65	if (perf_eops != &default_eops)
66		return -1;
67
68	perf_eops = eops;
69	return 0;
70}
71
72/**
73 * perf_error__unregister - Unregister error logging functions
74 * @eops: The pointer to error logging function struct
75 *
76 * Unregister already registered error logging functions.
77 */
78int perf_error__unregister(struct perf_error_ops *eops)
79{
80	if (perf_eops != eops)
81		return -1;
82
83	perf_eops = &default_eops;
84	return 0;
85}