LXR linux/tools/perf/ui/util.c

   1#include "util.h"
   2#include "../debug.h"
   3
   4
   5/*
   6 * Default error logging functions
   7 */
   8static 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
  15static 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
  22static struct perf_error_ops default_eops =
  23{
  24        .error          = perf_stdio__error,
  25        .warning        = perf_stdio__warning,
  26};
  27
  28static struct perf_error_ops *perf_eops = &default_eops;
  29
  30
  31int 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
  43int 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 */
  63int 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 */
  78int 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