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Commit 3f7247e0 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf tui: Catch signals to exit gracefully 



Resetting the terminal to a sane state.

Reported-by: default avatarIngo 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 2d5646c0

tools/perf/util/ui/setup.c

+23 −1
Original line number Diff line number Diff line
@@ -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 @@ static void newt_suspend(void *d __used) 
	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 @@ void setup_browser(bool fallback_to_pager) 
	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 @@ void exit_browser(bool wait_for_ok) 
			char title[] = "Fatal Error", ok[] = "Ok";

			newtWinMessage(title, ok, ui_helpline__last_msg);

		}

		newtFinished();

		ui__exit();

	}

}