Merge "Add functions for testability to the EventLog APIs" (cc0bc356) · Commits · e / os / android_system_core

liblog/include/log/log_event_list.h

+26 −1

Original line number	Diff line number	Diff line
		@@ -108,6 +108,12 @@ android_log_context create_android_log_parser(const char* msg, size_t len);
		android_log_list_element android_log_read_next(android_log_context ctx);
		android_log_list_element android_log_peek_next(android_log_context ctx);

		/**
		* Convert a writer context to a reader context. Useful for testing.
		* Returns an error if ctx is already a reader.
		*/
		int android_log_writer_to_reader(android_log_context ctx);

		/* Finished with reader or writer context */
		int android_log_destroy(android_log_context* ctx);

		@@ -122,6 +128,7 @@ class android_log_event_list {
		private:
		android_log_context ctx;
		int ret;
		int tag_;

		android_log_event_list(const android_log_event_list&) = delete;
		void operator=(const android_log_event_list&) = delete;
		@@ -129,11 +136,16 @@ class android_log_event_list {
		public:
		explicit android_log_event_list(int tag) : ret(0) {
		ctx = create_android_logger(static_cast<uint32_t>(tag));
		tag_ = tag;
		}

		explicit android_log_event_list(log_msg& log_msg) : ret(0) {
		ctx = create_android_log_parser(log_msg.msg() + sizeof(uint32_t),
		const char* buf = log_msg.msg();
		ctx = create_android_log_parser(buf + sizeof(uint32_t),
		log_msg.entry.len - sizeof(uint32_t));
		tag_ = buf[0] \| (buf[1] << 8) \| (buf[2] << 16) \| (buf[3] << 24);
		}

		~android_log_event_list() {
		android_log_destroy(&ctx);
		}
		@@ -149,6 +161,10 @@ class android_log_event_list {
		return ctx;
		}

		android_log_context context() const {
		return ctx;
		}

		/* return errors or transmit status */
		int status() const {
		return ret;
		@@ -159,12 +175,17 @@ class android_log_event_list {
		if (retval < 0) ret = retval;
		return ret;
		}

		int end() {
		int retval = android_log_write_list_end(ctx);
		if (retval < 0) ret = retval;
		return ret;
		}

		uint32_t tag() {
		return tag_;
		}

		android_log_event_list& operator<<(int32_t value) {
		int retval = android_log_write_int32(ctx, value);
		if (retval < 0) ret = retval;
		@@ -296,6 +317,10 @@ class android_log_event_list {
		return ret >= 0;
		}

		int convert_to_reader() {
		return android_log_writer_to_reader(ctx);
		}

		android_log_list_element read() {
		return android_log_read_next(ctx);
		}

liblog/log_event_list.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -565,3 +565,26 @@ LIBLOG_ABI_PUBLIC android_log_list_element
		android_log_peek_next(android_log_context ctx) {
		return android_log_read_next_internal(ctx, 1);
		}

		LIBLOG_ABI_PUBLIC int android_log_writer_to_reader(android_log_context ctx) {
		android_log_context_internal* context;

		context = (android_log_context_internal*)ctx;

		if (!context \|\| context->read_write_flag != kAndroidLoggerWrite) {
		return -EBADF;
		}

		context->len = context->pos;
		context->storage[1] =
		context
		->count[0]; // What does this do?!?! It's copied from the write func
		context->pos = 0;
		memset(context->count, 0, sizeof(context->count));
		memset(context->list, 0, sizeof(context->list));
		context->list_nest_depth = 0;
		context->read_write_flag = kAndroidLoggerRead;
		context->list_stop = false;

		return 0;
		}