+ /* FD on which to write the index data. */
+ int index_fd;
+
+ char *path_name;
+ char *channel_name;
+ /* on-disk circular buffer of tracefiles */
+ uint64_t tracefile_size;
+ uint64_t tracefile_size_current;
+ uint64_t tracefile_count;
+ uint64_t tracefile_count_current;