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perf tui: Catch signals to exit gracefully

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Resetting the terminal to a sane state.

Reported-by: Ingo Molnar <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-10-18 13:45:16 -02:00
commit 3f7247e072
1 changed files with 23 additions and 1 deletions
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24
tools/perf/util/ui/setup.c
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@ -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();
}
}