tools/perf/ui/setup.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <dlfcn.h>
   3 #include <signal.h>
   4 #include <unistd.h>
   5
   6 #include <subcmd/pager.h>
   7 #include "../util/debug.h"
   8 #include "../util/hist.h"
   9 #include "ui.h"
  10
  11 struct mutex ui__lock;
  12 void *perf_gtk_handle;
  13 int use_browser = -1;
  14
  15 #define PERF_GTK_DSO "libperf-gtk.so"
  16
  17 #ifdef HAVE_GTK2_SUPPORT
  18
  19 static int setup_gtk_browser(void)
  20 {
  21         int (*perf_ui_init)(void);
  22
  23         if (perf_gtk_handle)
  24                 return 0;
  25
  26         perf_gtk_handle = dlopen(PERF_GTK_DSO, RTLD_LAZY);
  27         if (perf_gtk_handle == NULL) {
  28                 char buf[PATH_MAX];
  29                 scnprintf(buf, sizeof(buf), "%s/%s", LIBDIR, PERF_GTK_DSO);
  30                 perf_gtk_handle = dlopen(buf, RTLD_LAZY);
  31         }
  32         if (perf_gtk_handle == NULL)
  33                 return -1;
  34
  35         perf_ui_init = dlsym(perf_gtk_handle, "perf_gtk__init");
  36         if (perf_ui_init == NULL)
  37                 goto out_close;
  38
  39         if (perf_ui_init() == 0)
  40                 return 0;
  41
  42 out_close:
  43         dlclose(perf_gtk_handle);
  44         return -1;
  45 }
  46
  47 static void exit_gtk_browser(bool wait_for_ok)
  48 {
  49         void (*perf_ui_exit)(bool);
  50
  51         if (perf_gtk_handle == NULL)
  52                 return;
  53
  54         perf_ui_exit = dlsym(perf_gtk_handle, "perf_gtk__exit");
  55         if (perf_ui_exit == NULL)
  56                 goto out_close;
  57
  58         perf_ui_exit(wait_for_ok);
  59
  60 out_close:
  61         dlclose(perf_gtk_handle);
  62
  63         perf_gtk_handle = NULL;
  64 }
  65 #else
  66 static inline int setup_gtk_browser(void) { return -1; }
  67 static inline void exit_gtk_browser(bool wait_for_ok __maybe_unused) {}
  68 #endif
  69
  70 int stdio__config_color(const struct option *opt __maybe_unused,
  71                         const char *mode, int unset __maybe_unused)
  72 {
  73         perf_use_color_default = perf_config_colorbool("color.ui", mode, -1);
  74         return 0;
  75 }
  76
  77 void setup_browser(bool fallback_to_pager)
  78 {
  79         mutex_init(&ui__lock);
  80         if (use_browser < 2 && (!isatty(1) || dump_trace))
  81                 use_browser = 0;
  82
  83         /* default to TUI */
  84         if (use_browser < 0)
  85                 use_browser = 1;
  86
  87         switch (use_browser) {
  88         case 2:
  89                 if (setup_gtk_browser() == 0)
  90                         break;
  91                 printf("GTK browser requested but could not find %s\n",
  92                        PERF_GTK_DSO);
  93                 sleep(1);
  94                 use_browser = 1;
  95                 /* fall through */
  96         case 1:
  97                 if (ui__init() == 0)
  98                         break;
  99                 /* fall through */
 100         default:
 101                 use_browser = 0;
 102                 if (fallback_to_pager)
 103                         setup_pager();
 104                 break;
 105         }
 106 }
 107
 108 void exit_browser(bool wait_for_ok)
 109 {
 110         switch (use_browser) {
 111         case 2:
 112                 exit_gtk_browser(wait_for_ok);
 113                 break;
 114
 115         case 1:
 116                 ui__exit(wait_for_ok);
 117                 break;
 118
 119         default:
 120                 break;
 121         }
 122         mutex_destroy(&ui__lock);
 123 }
 124
 125 void pthread__block_sigwinch(void)
 126 {
 127         sigset_t set;
 128
 129         sigemptyset(&set);
 130         sigaddset(&set, SIGWINCH);
 131         pthread_sigmask(SIG_BLOCK, &set, NULL);
 132 }
 133
 134 void pthread__unblock_sigwinch(void)
 135 {
 136         sigset_t set;
 137
 138         sigemptyset(&set);
 139         sigaddset(&set, SIGWINCH);
 140         pthread_sigmask(SIG_UNBLOCK, &set, NULL);
 141 }