liblog: add log/log_id.h

Move common log_id_t and simple internal support function definitions
that use it from log/log.h to log/log_id.h.

log_id_t
__android_log_buf_write
__android_log_buf_print
android_name_to_log_id
android_log_id_to_name

Test: gTest liblog-unit-tests --gtest_filter=\
      liblog.log_id:\
      liblog.__android_log_buf_print:\
      liblog.__android_log_buf_write:\
      liblog.__android_log_buf_print__concurrent64
Bug: 34250038
Change-Id: Iad3704cc72943a3094e1193a6d032c7f29a6cd5c

1 files changed, 63 insertions, 0 deletions

diff --git a/liblog/include/log/log_id.h b/liblog/include/log/log_id.h
new file mode 100644
index 000000000..3078e4eb1
--- /dev/null
+++ b/liblog/include/log/log_id.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2005-2017 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.
+ */
+
+#ifndef _LIBS_LOG_LOG_ID_H
+#define _LIBS_LOG_LOG_ID_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef log_id_t_defined
+#define log_id_t_defined
+typedef enum log_id {
+    LOG_ID_MIN = 0,
+
+    LOG_ID_MAIN = 0,
+    LOG_ID_RADIO = 1,
+    LOG_ID_EVENTS = 2,
+    LOG_ID_SYSTEM = 3,
+    LOG_ID_CRASH = 4,
+    LOG_ID_SECURITY = 5,
+    LOG_ID_KERNEL = 6, /* place last, third-parties can not use it */
+
+    LOG_ID_MAX
+} log_id_t;
+#endif
+#define sizeof_log_id_t sizeof(typeof_log_id_t)
+#define typeof_log_id_t unsigned char
+
+/*
+ * Send a simple string to the log.
+ */
+int __android_log_buf_write(int bufID, int prio, const char* tag, const char* text);
+int __android_log_buf_print(int bufID, int prio, const char* tag, const char* fmt, ...)
+#if defined(__GNUC__)
+    __attribute__((__format__(printf, 4, 5)))
+#endif
+    ;
+
+/*
+ * log_id_t helpers
+ */
+log_id_t android_name_to_log_id(const char* logName);
+const char* android_log_id_to_name(log_id_t log_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBS_LOG_LOG_ID_H */