57     struct _Tune  in _GLIBCXX_VISIBILITY()  struct
60       enum { _S_align = 8 };  in _GLIBCXX_VISIBILITY()
61       enum { _S_max_bytes = 128 };  in _GLIBCXX_VISIBILITY()
62       enum { _S_min_bin = 8 };  in _GLIBCXX_VISIBILITY()
63       enum { _S_chunk_size = 4096 - 4 * sizeof(void*) };  in _GLIBCXX_VISIBILITY()
64       enum { _S_max_threads = 4096 };  in _GLIBCXX_VISIBILITY()
65       enum { _S_freelist_headroom = 10 };  in _GLIBCXX_VISIBILITY()
70       size_t	_M_align;  in _GLIBCXX_VISIBILITY()
77       size_t	_M_max_bytes;   in _GLIBCXX_VISIBILITY()
82       size_t	_M_min_bin;  in _GLIBCXX_VISIBILITY()
90       size_t	_M_chunk_size;  in _GLIBCXX_VISIBILITY()
98       size_t 	_M_max_threads;  in _GLIBCXX_VISIBILITY()
106       size_t 	_M_freelist_headroom;  in _GLIBCXX_VISIBILITY()
109       bool 	_M_force_new;   in _GLIBCXX_VISIBILITY()
112       _Tune()  in _GLIBCXX_VISIBILITY()  argument
120       _Tune(size_t __align, size_t __maxb, size_t __minbin, size_t __chunk,   in _GLIBCXX_VISIBILITY()  argument