GC: Refactor public incremental marking interface in heap

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 750827968dcd757edff47ece2ed0948930aa688f..90fc2081f2f8dc8857f696273e44577813de9c71 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -852,6 +852,14 @@ class Heap {
   // incremental steps.
   void StartIdleIncrementalMarking();
 
+  void StartIncrementalMarking(int gc_flags,

[Hannes Payer (out of office), 2015/08/04 15:05:59]

Add comments to these functions.

[Michael Lippautz, 2015/08/04 15:53:06]

Done.

+                               const GCCallbackFlags gc_callback_flags,
+                               const char* reason = nullptr);
+
+  double AdvanceIncrementalMarking(
+      intptr_t step_size_in_bytes, double deadline_in_ms,
+      IncrementalMarking::StepActions step_actions);
+
   inline void increment_scan_on_scavenge_pages() {
     scan_on_scavenge_pages_++;
     if (FLAG_gc_verbose) {
@@ -2232,10 +2240,6 @@ class Heap {
 
   GCIdleTimeHandler::HeapState ComputeHeapState();
 
-  double AdvanceIncrementalMarking(
-      intptr_t step_size_in_bytes, double deadline_in_ms,
-      IncrementalMarking::ForceCompletionAction completion);
-
   bool PerformIdleTimeAction(GCIdleTimeAction action,
                              GCIdleTimeHandler::HeapState heap_state,
                              double deadline_in_ms);