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  * perf_error__register - Register error logging functions
  57  * @eops: The pointer to error logging function struct
  58  *
  59  * Register UI-specific error logging functions. Before calling this,
  60  * other logging functions should be unregistered, if any.
  61  */
  62 int perf_error__register(struct perf_error_ops *eops)
  63 {
  64         if (perf_eops != &default_eops)
  65                 return -1;
  66
  67         perf_eops = eops;
  68         return 0;
  69 }
  70
  71 /**
  72  * perf_error__unregister - Unregister error logging functions
  73  * @eops: The pointer to error logging function struct
  74  *
  75  * Unregister already registered error logging functions.
  76  */
  77 int perf_error__unregister(struct perf_error_ops *eops)
  78 {
  79         if (perf_eops != eops)
  80                 return -1;
  81
  82         perf_eops = &default_eops;
  83         return 0;
  84 }