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perf tools: Make Ctrl-C stop processing on TUI 

It was inconvenient that perf cannot be quit with SIGINT during
processing samples on TUI especially for large data files.

This was because the first argument of SLang_init_tty(), abort_char,
being 0.  The manual says it's the ascii value of the control character
that will be used to generate the interrupt signal [1].  Passing -1
means to use the default value (Ctrl-C).

However, after processing samples, Ctrl-C was used to in other cases as
well - like stepping back from annotate.  So recover the original
behavior after processing.

[1] http://jedsoft.org/slang/doc/html/cslang-6.html#ss6.1

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1432904024-13170-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2015-05-29 21:53:44 +09:00 committed by Arnaldo Carvalho de Melo
parent d7a3d85e08
commit ed42691590
3 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/perf/ui/browsers/annotate.c
View File

@ -838,6 +838,10 @@ int map_symbol__tui_annotate(struct map_symbol *ms, struct perf_evsel *evsel,
int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
/* reset abort key so that it can get Ctrl-C as a key */
SLang_reset_tty();
SLang_init_tty(0, 0, 0);
return map_symbol__tui_annotate(&he->ms, evsel, hbt);
}

4
tools/perf/ui/browsers/hists.c
View File

@ -1741,6 +1741,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
if (browser == NULL)
return -1;
/* reset abort key so that it can get Ctrl-C as a key */
SLang_reset_tty();
SLang_init_tty(0, 0, 0);
if (min_pcnt) {
browser->min_pcnt = min_pcnt;
hist_browser__update_nr_entries(browser);

2
tools/perf/ui/tui/setup.c
View File

@ -129,7 +129,7 @@ int ui__init(void)
err = SLsmg_init_smg();
if (err < 0)
goto out;
err = SLang_init_tty(0, 0, 0);
err = SLang_init_tty(-1, 0, 0);
if (err < 0)
goto out;