free get_current_dir_name asprintf free xmalloc xcalloc free backtrace_symbols free pvalloc free true false 0: false false false 1: 0: false 0: false 0: false false false false 0: false false 0: false false false false false false false false false 0: false 0: false 0: false 0: false false false false false false false false 0:4294967295 0:4294967295 false false false false false false false false false 0: 0: false 0: 0: false 0: false false false false false false 1: false 1: false 0: false false false false false true false false false close epoll_create close epoll_create1