kernel/tools/perf/ui/setup.c

   1 #include <pthread.h>
   2 #include <dlfcn.h>
   3
   4 #include "../util/cache.h"
   5 #include "../util/debug.h"
   6 #include "../util/hist.h"
   7
   8 pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
   9 void *perf_gtk_handle;
  10
  11 #ifdef HAVE_GTK2_SUPPORT
  12 static int setup_gtk_browser(void)
  13 {
  14         int (*perf_ui_init)(void);
  15
  16         if (perf_gtk_handle)
  17                 return 0;
  18
  19         perf_gtk_handle = dlopen(PERF_GTK_DSO, RTLD_LAZY);
  20         if (perf_gtk_handle == NULL) {
  21                 char buf[PATH_MAX];
  22                 scnprintf(buf, sizeof(buf), "%s/%s", LIBDIR, PERF_GTK_DSO);
  23                 perf_gtk_handle = dlopen(buf, RTLD_LAZY);
  24         }
  25         if (perf_gtk_handle == NULL)
  26                 return -1;
  27
  28         perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");
  29         if (perf_ui_init == NULL)
  30                 goto out_close;
  31
  32         if (perf_ui_init() == 0)
  33                 return 0;
  34
  35 out_close:
  36         dlclose(perf_gtk_handle);
  37         return -1;
  38 }
  39
  40 static void exit_gtk_browser(bool wait_for_ok)
  41 {
  42         void (*perf_ui_exit)(bool);
  43
  44         if (perf_gtk_handle == NULL)
  45                 return;
  46
  47         perf_ui_exit = dlsym(perf_gtk_handle, "perf_gtk__exit");
  48         if (perf_ui_exit == NULL)
  49                 goto out_close;
  50
  51         perf_ui_exit(wait_for_ok);
  52
  53 out_close:
  54         dlclose(perf_gtk_handle);
  55
  56         perf_gtk_handle = NULL;
  57 }
  58 #else
  59 static inline int setup_gtk_browser(void) { return -1; }
  60 static inline void exit_gtk_browser(bool wait_for_ok __maybe_unused) {}
  61 #endif
  62
  63 void setup_browser(bool fallback_to_pager)
  64 {
  65         if (use_browser < 2 && (!isatty(1) || dump_trace))
  66                 use_browser = 0;
  67
  68         /* default to TUI */
  69         if (use_browser < 0)
  70                 use_browser = 1;
  71
  72         switch (use_browser) {
  73         case 2:
  74                 if (setup_gtk_browser() == 0)
  75                         break;
  76                 printf("GTK browser requested but could not find %s\n",
  77                        PERF_GTK_DSO);
  78                 sleep(1);
  79                 /* fall through */
  80         case 1:
  81                 use_browser = 1;
  82                 if (ui__init() == 0)
  83                         break;
  84                 /* fall through */
  85         default:
  86                 use_browser = 0;
  87                 if (fallback_to_pager)
  88                         setup_pager();
  89                 break;
  90         }
  91 }
  92
  93 void exit_browser(bool wait_for_ok)
  94 {
  95         switch (use_browser) {
  96         case 2:
  97                 exit_gtk_browser(wait_for_ok);
  98                 break;
  99
 100         case 1:
 101                 ui__exit(wait_for_ok);
 102                 break;
 103
 104         default:
 105                 break;
 106         }
 107 }