Fixing, using and testing alarm code.
diff --git a/BUILD b/BUILD
index 459aebd..35f56ae 100644
--- a/BUILD
+++ b/BUILD
@@ -387,6 +387,7 @@
     "src/core/json/json_reader.c",
     "src/core/json/json_string.c",
     "src/core/json/json_writer.c",
+    "src/core/surface/alarm.c",
     "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_reader.c",
@@ -663,6 +664,7 @@
     "src/core/json/json_reader.c",
     "src/core/json/json_string.c",
     "src/core/json/json_writer.c",
+    "src/core/surface/alarm.c",
     "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_reader.c",
@@ -1337,6 +1339,7 @@
     "src/core/json/json_reader.c",
     "src/core/json/json_string.c",
     "src/core/json/json_writer.c",
+    "src/core/surface/alarm.c",
     "src/core/surface/api_trace.c",
     "src/core/surface/byte_buffer.c",
     "src/core/surface/byte_buffer_reader.c",