Define atrace_* functions for both target and host.
This change defines atrace_* functions for the host that act as
no-ops, which makes it easier to add tracing in ART.
Change-Id: I89397e83986686a2b6a6f245c25017eb379081b1
diff --git a/libcutils/trace-host.c b/libcutils/trace-host.c
new file mode 100644
index 0000000..b87e543
--- /dev/null
+++ b/libcutils/trace-host.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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 <cutils/trace.h>
+
+#ifndef __unused
+#define __unused __attribute__((__unused__))
+#endif
+
+volatile int32_t atrace_is_ready = 1;
+int atrace_marker_fd = -1;
+uint64_t atrace_enabled_tags = 0;
+
+void atrace_set_debuggable(bool debuggable __unused) { }
+void atrace_set_tracing_enabled(bool enabled __unused) { }
+void atrace_update_tags() { }
+void atrace_setup() { }
+void atrace_begin_body(const char* name __unused) { }
+void atrace_async_begin_body(const char* name __unused, int32_t cookie __unused) { }
+void atrace_async_end_body(const char* name __unused, int32_t cookie __unused) { }
+void atrace_int_body(const char* name __unused, int32_t value __unused) { }
+void atrace_int64_body(const char* name __unused, int64_t value __unused) { }