Expose incremental gc time slice in mono API

Author: jechter

mono/metadata/boehm-gc.c

@@ -419,6 +419,18 @@ mono_gc_get_heap_size (void)
 	return GC_get_heap_size ();
 }
 
+int64_t
+mono_get_max_time_slice_ns()
+{
+    return GC_get_time_limit() * 1000000;
+}
+
+void
+mono_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+	GC_set_time_limit(maxTimeSlice / 1000000);
+}
+
 gboolean
 mono_gc_is_gc_thread (void)
 {

mono/metadata/mono-gc.h

@@ -109,6 +109,8 @@ 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_get_max_time_slice_ns ();
+MONO_API void   mono_set_max_time_slice_ns (int64_t maxTimeSlice);
 MONO_API MonoBoolean mono_gc_pending_finalizers (void);
 MONO_API void     mono_gc_finalize_notify    (void);
 MONO_API int    mono_gc_invoke_finalizers (void);

mono/metadata/null-gc.c

@@ -91,6 +91,17 @@ mono_gc_get_heap_size (void)
 	return 2*1024*1024;
 }
 
+int64_t
+mono_get_max_time_slice_ns()
+{
+	return 0;
+}
+
+void
+mono_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+}
+
 gboolean
 mono_gc_is_gc_thread (void)
 {

mono/metadata/sgen-mono.c

@@ -2831,6 +2831,17 @@ mono_gc_get_heap_size (void)
 	return (int64_t)sgen_gc_get_total_heap_allocation ();
 }
 
+int64_t
+mono_get_max_time_slice_ns()
+{
+	return 0;
+}
+
+void
+mono_set_max_time_slice_ns(int64_t maxTimeSlice)
+{
+}
+
 MonoGCDescriptor
 mono_gc_make_root_descr_user (MonoGCRootMarkFunc marker)
 {