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perf ui: Introduce non-interactive ui__info_window() function

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Sometimes we want just to print a message on the center of the screen,
like in 'perf top' while we wait for the minimum amount of samples to be
collected before sorting and showing them.

Also expose __ui__info_window() as an optimization for cases where such
message is to be printed while holding the ui lock.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-uat0f89vfwl2w52kv9wzwd8a@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-08-19 16:38:24 -03:00
parent 9e79ff77e4
commit 9b01611934
2 changed files with 17 additions and 8 deletions
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23
tools/perf/ui/tui/util.c
View File

@ -162,8 +162,7 @@ next_key:
return key;
}
int ui__question_window(const char *title, const char *text,
const char *exit_msg, int delay_secs)
void __ui__info_window(const char *title, const char *text, const char *exit_msg)
{
int x, y;
int max_len = 0, nr_lines = 0;
@ -185,8 +184,6 @@ int ui__question_window(const char *title, const char *text,
t = sep + 1;
}
pthread_mutex_lock(&ui__lock);
max_len += 2;
nr_lines += 2;
if (exit_msg)
@ -206,19 +203,29 @@ int ui__question_window(const char *title, const char *text,
max_len -= 2;
SLsmg_write_wrapped_string((unsigned char *)text, y, x,
nr_lines, max_len, 1);
SLsmg_gotorc(y + nr_lines - 2, x);
SLsmg_write_nstring((char *)" ", max_len);
SLsmg_gotorc(y + nr_lines - 1, x);
if (exit_msg) {
SLsmg_gotorc(y + nr_lines - 2, x);
SLsmg_write_nstring((char *)" ", max_len);
SLsmg_gotorc(y + nr_lines - 1, x);
SLsmg_write_nstring((char *)exit_msg, max_len);
}
}
void ui__info_window(const char *title, const char *text)
{
pthread_mutex_lock(&ui__lock);
__ui__info_window(title, text, NULL);
SLsmg_refresh();
pthread_mutex_unlock(&ui__lock);
}
int ui__question_window(const char *title, const char *text,
const char *exit_msg, int delay_secs)
{
pthread_mutex_lock(&ui__lock);
__ui__info_window(title, text, exit_msg);
SLsmg_refresh();
pthread_mutex_unlock(&ui__lock);
return ui__getch(delay_secs);
}

2
tools/perf/ui/util.h
View File

@ -8,6 +8,8 @@ int ui__getch(int delay_secs);
int ui__popup_menu(int argc, char * const argv[]);
int ui__help_window(const char *text);
int ui__dialog_yesno(const char *msg);
void __ui__info_window(const char *title, const char *text, const char *exit_msg);
void ui__info_window(const char *title, const char *text);
int ui__question_window(const char *title, const char *text,
const char *exit_msg, int delay_secs);