Merge pull request #1045 from Unity-Technologies/expose-incremental-gc-time-slice-

Expose incremental gc time slice

Author: jechter

mono/metadata/boehm-gc.c

@@ -419,6 +419,34 @@ mono_gc_get_heap_size (void)
 	return GC_get_heap_size ();
 }
 
+int64_t
+mono_gc_get_max_time_slice_ns()
+{
+#if HAVE_BDWGC_GC
+    return GC_get_time_limit() * 1000000;
+#else
+	return 0;
+#endif		
+}
+
+void
+mono_gc_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+#if HAVE_BDWGC_GC
+	GC_set_time_limit(maxTimeSlice / 1000000);
+#endif	
+}
+
+MonoBoolean 
+mono_gc_is_incremental()
+{
+#if HAVE_BDWGC_GC
+    return GC_is_incremental_mode();
+#else
+	return FALSE;
+#endif		
+}
+
 gboolean
 mono_gc_is_gc_thread (void)
 {

mono/metadata/mono-gc.h

@@ -109,7 +109,10 @@ MONO_API int    mono_gc_get_generation  (MonoObject *object);
 MONO_API int    mono_gc_collection_count (int generation);
 MONO_API int64_t mono_gc_get_used_size   (void);
 MONO_API int64_t mono_gc_get_heap_size   (void);
+MONO_API int64_t mono_gc_get_max_time_slice_ns ();
+MONO_API void   mono_gc_set_max_time_slice_ns (int64_t maxTimeSlice);
 MONO_API MonoBoolean mono_gc_pending_finalizers (void);
+MONO_API MonoBoolean mono_gc_is_incremental (void);
 MONO_API void     mono_gc_finalize_notify    (void);
 MONO_API int    mono_gc_invoke_finalizers (void);
 /* heap walking is only valid in the pre-stop-world event callback */

mono/metadata/null-gc.c

@@ -91,6 +91,23 @@ mono_gc_get_heap_size (void)
 	return 2*1024*1024;
 }
 
+int64_t
+mono_gc_get_max_time_slice_ns()
+{
+	return 0;
+}
+
+void
+mono_gc_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+}
+
+MonoBoolean 
+mono_gc_is_incremental()
+{
+    return FALSE;
+}
+
 gboolean
 mono_gc_is_gc_thread (void)
 {

mono/metadata/sgen-mono.c

@@ -2831,6 +2831,23 @@ mono_gc_get_heap_size (void)
 	return (int64_t)sgen_gc_get_total_heap_allocation ();
 }
 
+int64_t
+mono_gc_get_max_time_slice_ns()
+{
+	return 0;
+}
+
+MonoBoolean 
+mono_gc_is_incremental()
+{
+    return FALSE;
+}
+
+void
+mono_gc_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+}
+
 MonoGCDescriptor
 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
 {