gistfile1.txt

diff --git a/mono/metadata/sgen-gc.c b/mono/metadata/sgen-gc.c
index 20d6447..ffb4a57 100644
--- a/mono/metadata/sgen-gc.c
+++ b/mono/metadata/sgen-gc.c
@@ -2575,6 +2575,8 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 	*/
 	mono_sgen_bridge_reset_data ();
 
+	DEBUG (2, fprintf (gc_debug_file, "Bridge reset done"));
+
 	/*
 	 * Walk the ephemeron tables marking all values with reachable keys. This must be completely done
 	 * before processing finalizable objects or non-tracking weak hamdle to avoid finalizing/clearing
@@ -2587,11 +2589,17 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 		++ephemeron_rounds;
 	} while (!done_with_ephemerons);
 
+	DEBUG (2, fprintf (gc_debug_file, "Ephemeron processing done"));
+
 	mono_sgen_scan_togglerefs (copy_func, start_addr, end_addr, queue);
 	if (generation == GENERATION_OLD)
 		mono_sgen_scan_togglerefs (copy_func, nursery_start, nursery_real_end, queue);
 
+	DEBUG (2, fprintf (gc_debug_file, "Toggleref processing done"));
+
 	if (mono_sgen_need_bridge_processing ()) {
+		DEBUG (2, fprintf (gc_debug_file, "Processing bridge objects."));
+
 		if (finalized_array == NULL) {
 			finalized_array_capacity = 32;
 			finalized_array = mono_sgen_alloc_internal_dynamic (sizeof (MonoObject*) * finalized_array_capacity, INTERNAL_MEM_BRIDGE_DATA);
@@ -2602,11 +2610,15 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 		if (generation == GENERATION_OLD)
 			collect_bridge_objects (copy_func, nursery_start, nursery_real_end, GENERATION_NURSERY, queue);
 
+		DEBUG (2, fprintf (gc_debug_file, "Bridge objects collected."));
+
 		if (finalized_array_entries > 0) {
 			mono_sgen_bridge_processing_register_objects (finalized_array_entries, finalized_array);
 			finalized_array_entries = 0;
 		}
+		DEBUG (2, fprintf (gc_debug_file, "Bridge objects registered."));
 		drain_gray_stack (queue);
+		DEBUG (2, fprintf (gc_debug_file, "Bridge objects gray stack drained."));
 	}
 
 	/*
@@ -2617,6 +2629,7 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 	if (generation == GENERATION_OLD)
 		null_link_in_range (copy_func, start_addr, end_addr, GENERATION_NURSERY, TRUE, queue);
 
+	DEBUG (2, fprintf (gc_debug_file, "Weak links processing done."));
 
 	/* walk the finalization queue and move also the objects that need to be
 	 * finalized: use the finalized objects as new roots so the objects they depend
@@ -2640,6 +2653,8 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 		drain_gray_stack (queue);
 	} while (fin_ready != num_ready_finalizers);
 
+	DEBUG (2, fprintf (gc_debug_file, "Finalizer processing done."));
+
 	if (mono_sgen_need_bridge_processing ())
 		g_assert (num_loops <= 1);
 
@@ -2653,6 +2668,8 @@ finish_gray_stack (char *start_addr, char *end_addr, int generation, GrayQueue *
 		++ephemeron_rounds;
 	} while (!done_with_ephemerons);
 
+	DEBUG (2, fprintf (gc_debug_file, "Second Ephemeron pass done."));
+
 	/*
 	 * Clear ephemeron pairs with unreachable keys.
 	 * We pass the copy func so we can figure out if an array was promoted or not.