Enable multi-threading (only effective when the library was compiled
with -DBGZF_MT)
@param fp BGZF file handler; must be opened for writing
@param n_threads #threads used for writing
@param n_sub_blks #blocks processed by each thread; a value 64-256 is recommended
Enable multi-threading (only effective when the library was compiled with -DBGZF_MT)
@param fp BGZF file handler; must be opened for writing @param n_threads #threads used for writing @param n_sub_blks #blocks processed by each thread; a value 64-256 is recommended