tools/perf/ui/util.c

   1 #include "util.h"
   2 #include "../debug.h"
   3
   4
   5 /*
   6  * Default error logging functions
   7  */
   8 static int perf_stdio__error(const char *format, va_list args)
   9 {
  10         fprintf(stderr, "Error:\n");
  11         vfprintf(stderr, format, args);
  12         return 0;
  13 }
  14
  15 static int perf_stdio__warning(const char *format, va_list args)
  16 {
  17         fprintf(stderr, "Warning:\n");
  18         vfprintf(stderr, format, args);
  19         return 0;
  20 }
  21
  22 static struct perf_error_ops default_eops =
  23 {
  24         .error          = perf_stdio__error,
  25         .warning        = perf_stdio__warning,
  26 };
  27
  28 static struct perf_error_ops *perf_eops = &default_eops;
  29
  30
  31 int ui__error(const char *format, ...)
  32 {
  33         int ret;
  34         va_list args;
  35
  36         va_start(args, format);
  37         ret = perf_eops->error(format, args);
  38         va_end(args);
  39
  40         return ret;
  41 }
  42
  43 int ui__warning(const char *format, ...)
  44 {
  45         int ret;
  46         va_list args;
  47
  48         va_start(args, format);
  49         ret = perf_eops->warning(format, args);
  50         va_end(args);
  51
  52         return ret;
  53 }
  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  */
  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  */
  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 }