1 files changed, 43 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/iomgr_internal.cc b/src/core/lib/iomgr/iomgr_internal.cc
new file mode 100644
index 0000000000..32dbabb79d
--- /dev/null
+++ b/src/core/lib/iomgr/iomgr_internal.cc
@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include "src/core/lib/iomgr/iomgr_internal.h"
+#include "src/core/lib/iomgr/timer.h"
+#include "src/core/lib/iomgr/timer_manager.h"
+
+static grpc_iomgr_platform_vtable* iomgr_platform_vtable = nullptr;
+
+void grpc_set_iomgr_platform_vtable(grpc_iomgr_platform_vtable* vtable) {
+  iomgr_platform_vtable = vtable;
+}
+
+void grpc_determine_iomgr_platform() {
+  if (iomgr_platform_vtable == nullptr) {
+    grpc_set_default_iomgr_platform();
+  }
+}
+
+void grpc_iomgr_platform_init() { iomgr_platform_vtable->init(); }
+
+void grpc_iomgr_platform_flush() { iomgr_platform_vtable->flush(); }
+
+void grpc_iomgr_platform_shutdown() { iomgr_platform_vtable->shutdown(); }