diff options
Diffstat (limited to 'libstdc++-v3/include/bits/stl_deque.h')
| -rw-r--r-- | libstdc++-v3/include/bits/stl_deque.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/libstdc++-v3/include/bits/stl_deque.h b/libstdc++-v3/include/bits/stl_deque.h index 7f601cbf0fb..d7589f71d7a 100644 --- a/libstdc++-v3/include/bits/stl_deque.h +++ b/libstdc++-v3/include/bits/stl_deque.h @@ -72,11 +72,19 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D) * This function started off as a compiler kludge from SGI, but seems to * be a useful wrapper around a repeated constant expression. The '512' is * tunable (and no other code needs to change), but no investigation has - * been done since inheriting the SGI code. + * been done since inheriting the SGI code. Touch _GLIBCXX_DEQUE_BUF_SIZE + * only if you know what you are doing, however: changing it breaks the + * binary compatibility!! */ + +#ifndef _GLIBCXX_DEQUE_BUF_SIZE +#define _GLIBCXX_DEQUE_BUF_SIZE 512 +#endif + inline size_t __deque_buf_size(size_t __size) - { return __size < 512 ? size_t(512 / __size) : size_t(1); } + { return (__size < _GLIBCXX_DEQUE_BUF_SIZE + ? size_t(_GLIBCXX_DEQUE_BUF_SIZE / __size) : size_t(1)); } /** @@ -1798,6 +1806,8 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D) swap(deque<_Tp,_Alloc>& __x, deque<_Tp,_Alloc>& __y) { __x.swap(__y); } +#undef _GLIBCXX_DEQUE_BUF_SIZE + _GLIBCXX_END_NESTED_NAMESPACE #endif /* _STL_DEQUE_H */ |