linux/tools/perf/ui/helpline.c
Namhyung Kim b56e53312d perf ui/helpline: Introduce ui_helpline__vshow()
The ui_helpline__vshow() will be used for pr_* functions.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1352911664-24620-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-12-09 08:46:04 -03:00

74 lines
1.2 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../debug.h"
#include "helpline.h"
#include "ui.h"
char ui_helpline__current[512];
static void nop_helpline__pop(void)
{
}
static void nop_helpline__push(const char *msg __maybe_unused)
{
}
static int nop_helpline__show(const char *fmt __maybe_unused,
va_list ap __maybe_unused)
{
return 0;
}
static struct ui_helpline default_helpline_fns = {
.pop = nop_helpline__pop,
.push = nop_helpline__push,
.show = nop_helpline__show,
};
struct ui_helpline *helpline_fns = &default_helpline_fns;
void ui_helpline__pop(void)
{
helpline_fns->pop();
}
void ui_helpline__push(const char *msg)
{
helpline_fns->push(msg);
}
void ui_helpline__vpush(const char *fmt, va_list ap)
{
char *s;
if (vasprintf(&s, fmt, ap) < 0)
vfprintf(stderr, fmt, ap);
else {
ui_helpline__push(s);
free(s);
}
}
void ui_helpline__fpush(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
ui_helpline__vpush(fmt, ap);
va_end(ap);
}
void ui_helpline__puts(const char *msg)
{
ui_helpline__pop();
ui_helpline__push(msg);
}
int ui_helpline__vshow(const char *fmt, va_list ap)
{
return helpline_fns->show(fmt, ap);
}