tools/perf/util/ui/setup.c

   1 #include <newt.h>
   2 #include <signal.h>
   3 #include <stdbool.h>
   4
   5 #include "../cache.h"
   6 #include "../debug.h"
   7 #include "browser.h"
   8 #include "helpline.h"
   9 #include "ui.h"
  10 #include "libslang.h"
  11
  12 pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
  13
  14 static void newt_suspend(void *d __used)
  15 {
  16         newtSuspend();
  17         raise(SIGTSTP);
  18         newtResume();
  19 }
  20
  21 static void ui__exit(void)
  22 {
  23         SLtt_set_cursor_visibility(1);
  24         SLsmg_refresh();
  25         SLsmg_reset_smg();
  26         SLang_reset_tty();
  27 }
  28
  29 static void ui__signal(int sig)
  30 {
  31         ui__exit();
  32         psignal(sig, "perf");
  33         exit(0);
  34 }
  35
  36 void setup_browser(bool fallback_to_pager)
  37 {
  38         if (!isatty(1) || !use_browser || dump_trace) {
  39                 use_browser = 0;
  40                 if (fallback_to_pager)
  41                         setup_pager();
  42                 return;
  43         }
  44
  45         use_browser = 1;
  46         newtInit();
  47         newtSetSuspendCallback(newt_suspend, NULL);
  48         ui_helpline__init();
  49         ui_browser__init();
  50
  51         signal(SIGSEGV, ui__signal);
  52         signal(SIGFPE, ui__signal);
  53         signal(SIGINT, ui__signal);
  54         signal(SIGQUIT, ui__signal);
  55         signal(SIGTERM, ui__signal);
  56 }
  57
  58 void exit_browser(bool wait_for_ok)
  59 {
  60         if (use_browser > 0) {
  61                 if (wait_for_ok) {
  62                         char title[] = "Fatal Error", ok[] = "Ok";
  63                         newtWinMessage(title, ok, ui_helpline__last_msg);
  64                 }
  65                 ui__exit();
  66         }
  67 }