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  */
perf_stdio__error(const char * format,va_list args)9 static 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 
perf_stdio__warning(const char * format,va_list args)16 static 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 
23 static struct perf_error_ops default_eops =
24 {
25 	.error		= perf_stdio__error,
26 	.warning	= perf_stdio__warning,
27 };
28 
29 static struct perf_error_ops *perf_eops = &default_eops;
30 
31 
ui__error(const char * format,...)32 int 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 
ui__warning(const char * format,...)44 int 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  */
perf_error__register(struct perf_error_ops * eops)63 int 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  */
perf_error__unregister(struct perf_error_ops * eops)78 int 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 }
86