liblog: Add C++ wrapper for C event log handler (8b4cab3f) · Commits · e / os / android_system_core

include/log/logger.h

+94 −2

Original line number	Diff line number	Diff line
		@@ -15,6 +15,10 @@
		#include <time.h> /* clockid_t definition */
		#endif

		#ifdef __cplusplus
		#include <string>
		#endif

		#include <log/log.h>
		#include <log/log_read.h>

		@@ -219,6 +223,94 @@ clockid_t android_log_clockid();
		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
		// android_log_context C++ helpers
		class android_log_event_context {
		android_log_context ctx;
		int ret;

		public:
		explicit android_log_event_context(int tag) : ret(0) {
		ctx = create_android_logger(tag);
		}
		explicit android_log_event_context(log_msg& log_msg) : ret(0) {
		ctx = create_android_log_parser(log_msg.msg() + sizeof(uint32_t),
		log_msg.entry.len - sizeof(uint32_t));
		}
		~android_log_event_context() { android_log_destroy(&ctx); }

		int close() {
		int retval = android_log_destroy(&ctx);
		if (retval < 0) ret = retval;
		return retval;
		}

		// To allow above C calls to use this class as parameter
		operator android_log_context() const { return ctx; };

		int error() const { return ret; }

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

		android_log_event_context& operator <<(int32_t value) {
		int retval = android_log_write_int32(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(uint32_t value) {
		int retval = android_log_write_int32(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(int64_t value) {
		int retval = android_log_write_int64(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(uint64_t value) {
		int retval = android_log_write_int64(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(const char* value) {
		int retval = android_log_write_string8(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(std::string& value) {
		int retval = android_log_write_string8_len(ctx,
		value.data(),
		value.length());
		if (retval < 0) ret = retval;
		return *this;
		}
		android_log_event_context& operator <<(float value) {
		int retval = android_log_write_float32(ctx, value);
		if (retval < 0) ret = retval;
		return *this;
		}

		int write(log_id_t id) {
		int retval = android_log_write_list(ctx, id);
		if (retval < 0) ret = retval;
		return ret;
		}

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

		};
		#endif

		#ifdef __cplusplus
		}
		#endif