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kernel/linux-imx6_3.14.28/tools/perf/ui/util.c 1.55 KB
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  #include "util.h"
  #include "../debug.h"
  
  
  /*
   * Default error logging functions
   */
  static int perf_stdio__error(const char *format, va_list args)
  {
  	fprintf(stderr, "Error:
  ");
  	vfprintf(stderr, format, args);
  	return 0;
  }
  
  static int perf_stdio__warning(const char *format, va_list args)
  {
  	fprintf(stderr, "Warning:
  ");
  	vfprintf(stderr, format, args);
  	return 0;
  }
  
  static struct perf_error_ops default_eops =
  {
  	.error		= perf_stdio__error,
  	.warning	= perf_stdio__warning,
  };
  
  static struct perf_error_ops *perf_eops = &default_eops;
  
  
  int ui__error(const char *format, ...)
  {
  	int ret;
  	va_list args;
  
  	va_start(args, format);
  	ret = perf_eops->error(format, args);
  	va_end(args);
  
  	return ret;
  }
  
  int ui__warning(const char *format, ...)
  {
  	int ret;
  	va_list args;
  
  	va_start(args, format);
  	ret = perf_eops->warning(format, args);
  	va_end(args);
  
  	return ret;
  }
  
  /**
   * perf_error__register - Register error logging functions
   * @eops: The pointer to error logging function struct
   *
   * Register UI-specific error logging functions. Before calling this,
   * other logging functions should be unregistered, if any.
   */
  int perf_error__register(struct perf_error_ops *eops)
  {
  	if (perf_eops != &default_eops)
  		return -1;
  
  	perf_eops = eops;
  	return 0;
  }
  
  /**
   * perf_error__unregister - Unregister error logging functions
   * @eops: The pointer to error logging function struct
   *
   * Unregister already registered error logging functions.
   */
  int perf_error__unregister(struct perf_error_ops *eops)
  {
  	if (perf_eops != eops)
  		return -1;
  
  	perf_eops = &default_eops;
  	return 0;
  }