1 files changed, 12 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/iomgr_internal.h b/src/core/lib/iomgr/iomgr_internal.h
index 644219fb4d..b011d9c7b1 100644
--- a/src/core/lib/iomgr/iomgr_internal.h
+++ b/src/core/lib/iomgr/iomgr_internal.h
@@ -31,9 +31,21 @@ typedef struct grpc_iomgr_object {
   struct grpc_iomgr_object* prev;
 } grpc_iomgr_object;
 
+typedef struct grpc_iomgr_platform_vtable {
+  void (*init)(void);
+  void (*flush)(void);
+  void (*shutdown)(void);
+} grpc_iomgr_platform_vtable;
+
 void grpc_iomgr_register_object(grpc_iomgr_object* obj, const char* name);
 void grpc_iomgr_unregister_object(grpc_iomgr_object* obj);
 
+void grpc_determine_iomgr_platform();
+
+void grpc_set_iomgr_platform_vtable(grpc_iomgr_platform_vtable* vtable);
+
+void grpc_set_default_iomgr_platform();
+
 void grpc_iomgr_platform_init(void);
 /** flush any globally queued work from iomgr */
 void grpc_iomgr_platform_flush(void);