linux/tools/perf/ui/util.c
Namhyung Kim ba47a142d9 perf ui: Introduce struct perf_error_ops
The struct perf_error_ops is for flexible error logging.

We can register appropriate functions based on front-end.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1338265382-6872-4-git-send-email-namhyung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-06-19 13:06:18 -03:00

86 lines
1.6 KiB
C

#include "util.h"
#include "../debug.h"
/*
* Default error logging functions
*/
static int perf_stdio__error(const char *format, va_list args)
{
fprintf(stderr, "Error:\n");
vfprintf(stderr, format, args);
return 0;
}
static int perf_stdio__warning(const char *format, va_list args)
{
fprintf(stderr, "Warning:\n");
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;
}