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 int ui__init(void)
  22 {
  23         int err = SLkp_init();
  24
  25         if (err < 0)
  26                 goto out;
  27
  28         SLkp_define_keysym((char *)"^(kB)", SL_KEY_UNTAB);
  29 out:
  30         return err;
  31 }
  32
  33 static void ui__exit(void)
  34 {
  35         SLtt_set_cursor_visibility(1);
  36         SLsmg_refresh();
  37         SLsmg_reset_smg();
  38         SLang_reset_tty();
  39 }
  40
  41 static void ui__signal(int sig)
  42 {
  43         ui__exit();
  44         psignal(sig, "perf");
  45         exit(0);
  46 }
  47
  48 void setup_browser(bool fallback_to_pager)
  49 {
  50         if (!isatty(1) || !use_browser || dump_trace) {
  51                 use_browser = 0;
  52                 if (fallback_to_pager)
  53                         setup_pager();
  54                 return;
  55         }
  56
  57         use_browser = 1;
  58         newtInit();
  59         ui__init();
  60         newtSetSuspendCallback(newt_suspend, NULL);
  61         ui_helpline__init();
  62         ui_browser__init();
  63
  64         signal(SIGSEGV, ui__signal);
  65         signal(SIGFPE, ui__signal);
  66         signal(SIGINT, ui__signal);
  67         signal(SIGQUIT, ui__signal);
  68         signal(SIGTERM, ui__signal);
  69 }
  70
  71 void exit_browser(bool wait_for_ok)
  72 {
  73         if (use_browser > 0) {
  74                 if (wait_for_ok) {
  75                         char title[] = "Fatal Error", ok[] = "Ok";
  76                         newtWinMessage(title, ok, ui_helpline__last_msg);
  77                 }
  78                 ui__exit();
  79         }
  80 }