perf/ui/util.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include "util.h"
0003 #include "../util/debug.h"
0004 #include <stdio.h>
0005
0006 /*
0007  * Default error logging functions
0008  */
0009 static int perf_stdio__error(const char *format, va_list args)
0010 {
0011     fprintf(stderr, "Error:\n");
0012     vfprintf(stderr, format, args);
0013     return 0;
0014 }
0015
0016 static int perf_stdio__warning(const char *format, va_list args)
0017 {
0018     fprintf(stderr, "Warning:\n");
0019     vfprintf(stderr, format, args);
0020     return 0;
0021 }
0022
0023 static struct perf_error_ops default_eops =
0024 {
0025     .error      = perf_stdio__error,
0026     .warning    = perf_stdio__warning,
0027 };
0028
0029 static struct perf_error_ops *perf_eops = &default_eops;
0030
0031
0032 int ui__error(const char *format, ...)
0033 {
0034     int ret;
0035     va_list args;
0036
0037     va_start(args, format);
0038     ret = perf_eops->error(format, args);
0039     va_end(args);
0040
0041     return ret;
0042 }
0043
0044 int ui__warning(const char *format, ...)
0045 {
0046     int ret;
0047     va_list args;
0048
0049     va_start(args, format);
0050     ret = perf_eops->warning(format, args);
0051     va_end(args);
0052
0053     return ret;
0054 }
0055
0056 /**
0057  * perf_error__register - Register error logging functions
0058  * @eops: The pointer to error logging function struct
0059  *
0060  * Register UI-specific error logging functions. Before calling this,
0061  * other logging functions should be unregistered, if any.
0062  */
0063 int perf_error__register(struct perf_error_ops *eops)
0064 {
0065     if (perf_eops != &default_eops)
0066         return -1;
0067
0068     perf_eops = eops;
0069     return 0;
0070 }
0071
0072 /**
0073  * perf_error__unregister - Unregister error logging functions
0074  * @eops: The pointer to error logging function struct
0075  *
0076  * Unregister already registered error logging functions.
0077  */
0078 int perf_error__unregister(struct perf_error_ops *eops)
0079 {
0080     if (perf_eops != eops)
0081         return -1;
0082
0083     perf_eops = &default_eops;
0084     return 0;
0085 }