[glib] GSource: add g_source_set_name, g_source_get_name, g_source_set_name_by_id

[Colin Walters <walters src gnome org>]

commit 6b53e4826fba3827ac7273a344b46f854ee81d0b
Author: Havoc Pennington <hp pobox com>
Date:   Tue Apr 20 17:47:44 2010 -0400

    GSource: add g_source_set_name, g_source_get_name, g_source_set_name_by_id
    
    These allow applications to give meaningful names to their sources.
    Source names can then be used for debugging and profiling, for
    example with systemtap or gdb.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=606044

 glib/gmain.c          |    5 ++++-
 tests/mainloop-test.c |    6 +++++-
 2 files changed, 9 insertions(+), 2 deletions(-)
---
diff --git a/glib/gmain.c b/glib/gmain.c
index 048d834..32b1d21 100644
--- a/glib/gmain.c
+++ b/glib/gmain.c
@@ -1415,7 +1415,10 @@ g_source_unref_internal (GSource      *source,
 
       if (source->source_funcs->finalize)
 	source->source_funcs->finalize (source);
-      
+
+      g_free (source->name);
+      source->name = NULL;
+
       g_slist_free (source->poll_fds);
       source->poll_fds = NULL;
       g_free (source);
diff --git a/tests/mainloop-test.c b/tests/mainloop-test.c
index cfa7f73..5fa7931 100644
--- a/tests/mainloop-test.c
+++ b/tests/mainloop-test.c
@@ -156,13 +156,15 @@ adder_thread (gpointer data)
   addr_data.dest = channels[1];
   addr_data.loop = g_main_loop_new (context, FALSE);
   addr_data.count = 0;
-  
+
   adder_source = g_io_create_watch (channels[0], G_IO_IN | G_IO_HUP);
+  g_source_set_name (source, "Adder I/O");
   g_source_set_callback (adder_source, (GSourceFunc)adder_callback, &addr_data, NULL);
   g_source_attach (adder_source, context);
   g_source_unref (adder_source);
 
   timeout_source = g_timeout_source_new (10);
+  g_source_set_name (source, "Adder timeout");
   g_source_set_callback (timeout_source, (GSourceFunc)timeout_callback, &addr_data, NULL);
   g_source_set_priority (timeout_source, G_PRIORITY_HIGH);
   g_source_attach (timeout_source, context);
@@ -335,6 +337,7 @@ static void
 create_crawler (void)
 {
   GSource *source = g_timeout_source_new (g_random_int_range (0, CRAWLER_TIMEOUT_RANGE));
+  g_source_set_name (source, "Crawler timeout");
   g_source_set_callback (source, (GSourceFunc)crawler_callback, source, NULL);
 
   G_LOCK (crawler_array_lock);
@@ -386,6 +389,7 @@ recurser_start (gpointer data)
   g_mutex_lock (context_array_mutex);
   context = context_array->pdata[g_random_int_range (0, context_array->len)];
   source = g_idle_source_new ();
+  g_source_set_name (source, "Recursing idle source");
   g_source_set_callback (source, recurser_idle, context, NULL);
   g_source_attach (source, context);
   g_source_unref (source);