perf tui: Catch signals to exit gracefully
Resetting the terminal to a sane state.
Reported-by: Ingo Molnar <mingo@elte.hu>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-myu44ujofadcy3y6an2mk383@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/ui/setup.c b/tools/perf/util/ui/setup.c
index ee46d67..8b8a57b45 100644
--- a/tools/perf/util/ui/setup.c
+++ b/tools/perf/util/ui/setup.c
@@ -7,6 +7,7 @@
#include "browser.h"
#include "helpline.h"
#include "ui.h"
+#include "libslang.h"
pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
@@ -17,6 +18,21 @@
newtResume();
}
+static void ui__exit(void)
+{
+ SLtt_set_cursor_visibility(1);
+ SLsmg_refresh();
+ SLsmg_reset_smg();
+ SLang_reset_tty();
+}
+
+static void ui__signal(int sig)
+{
+ ui__exit();
+ psignal(sig, "perf");
+ exit(0);
+}
+
void setup_browser(bool fallback_to_pager)
{
if (!isatty(1) || !use_browser || dump_trace) {
@@ -32,6 +48,12 @@
newtSetSuspendCallback(newt_suspend, NULL);
ui_helpline__init();
ui_browser__init();
+
+ signal(SIGSEGV, ui__signal);
+ signal(SIGFPE, ui__signal);
+ signal(SIGINT, ui__signal);
+ signal(SIGQUIT, ui__signal);
+ signal(SIGTERM, ui__signal);
}
void exit_browser(bool wait_for_ok)
@@ -41,6 +63,6 @@
char title[] = "Fatal Error", ok[] = "Ok";
newtWinMessage(title, ok, ui_helpline__last_msg);
}
- newtFinished();
+ ui__exit();
}
}