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 if (quiet)
19 return 0;
20
21 fprintf(stderr, "Warning:\n");
22 vfprintf(stderr, format, args);
23 return 0;
24}
25
26static struct perf_error_ops default_eops =
27{
28 .error = perf_stdio__error,
29 .warning = perf_stdio__warning,
30};
31
32static struct perf_error_ops *perf_eops = &default_eops;
33
34
35int ui__error(const char *format, ...)
36{
37 int ret;
38 va_list args;
39
40 va_start(args, format);
41 ret = perf_eops->error(format, args);
42 va_end(args);
43
44 return ret;
45}
46
47int ui__warning(const char *format, ...)
48{
49 int ret;
50 va_list args;
51 if (quiet)
52 return 0;
53
54 va_start(args, format);
55 ret = perf_eops->warning(format, args);
56 va_end(args);
57
58 return ret;
59}
60
61/**
62 * perf_error__register - Register error logging functions
63 * @eops: The pointer to error logging function struct
64 *
65 * Register UI-specific error logging functions. Before calling this,
66 * other logging functions should be unregistered, if any.
67 */
68int perf_error__register(struct perf_error_ops *eops)
69{
70 if (perf_eops != &default_eops)
71 return -1;
72
73 perf_eops = eops;
74 return 0;
75}
76
77/**
78 * perf_error__unregister - Unregister error logging functions
79 * @eops: The pointer to error logging function struct
80 *
81 * Unregister already registered error logging functions.
82 */
83int perf_error__unregister(struct perf_error_ops *eops)
84{
85 if (perf_eops != eops)
86 return -1;
87
88 perf_eops = &default_eops;
89 return 0;
90}
91

source code of linux/tools/perf/ui/util.c