[sysprof] tools: add --gtk option for GTK_TRACE_FD= envvar

[Christian Hergert <chergert src gnome org>]

commit 745f4c4168d5a5cdee770af1537e779fc5261b1b
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jul 20 18:38:12 2019 -0700

    tools: add --gtk option for GTK_TRACE_FD= envvar

 src/tools/sysprof-cli.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/src/tools/sysprof-cli.c b/src/tools/sysprof-cli.c
index 085f125..f77ab26 100644
--- a/src/tools/sysprof-cli.c
+++ b/src/tools/sysprof-cli.c
@@ -81,6 +81,7 @@ main (gint   argc,
   GError *error = NULL;
   gchar *command = NULL;
   gboolean gjs = FALSE;
+  gboolean gtk = FALSE;
   gboolean no_battery = FALSE;
   gboolean no_cpu = FALSE;
   gboolean no_decode = FALSE;
@@ -108,6 +109,7 @@ main (gint   argc,
     { "no-network", 0, 0, G_OPTION_ARG_NONE, &no_network, N_("Disable recording of network statistics") },
     { "use-trace-fd", 0, 0, G_OPTION_ARG_NONE, &use_trace_fd, N_("Set SYSPROF_TRACE_FD environment for 
subprocess") },
     { "gjs", 0, 0, G_OPTION_ARG_NONE, &gjs, N_("Set GJS_TRACE_FD environment to trace GJS processes") },
+    { "gtk", 0, 0, G_OPTION_ARG_NONE, &gtk, N_("Set GTK_TRACE_FD environment to trace a GTK application") },
     { "gnome-shell", 0, 0, G_OPTION_ARG_NONE, &gnome_shell, N_("Connect to org.gnome.Shell for profiler 
statistics") },
     { "version", 0, 0, G_OPTION_ARG_NONE, &version, N_("Print the sysprof-cli version and exit") },
     { NULL }
@@ -265,6 +267,14 @@ main (gint   argc,
       g_object_unref (source);
     }
 
+  if (gtk)
+    {
+      source = sysprof_tracefd_source_new ();
+      sysprof_tracefd_source_set_envvar (SYSPROF_TRACEFD_SOURCE (source), "GTK_TRACE_FD");
+      sysprof_profiler_add_source (profiler, source);
+      g_object_unref (source);
+    }
+
   source = sysprof_proc_source_new ();
   sysprof_profiler_add_source (profiler, source);
   g_object_unref (source);