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Update documentation for default_allocator

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Glen Fernandes
2019-04-27 19:11:45 -04:00
parent 151f2cf645
commit 62fff4d829
2 changed files with 16 additions and 6 deletions
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16
doc/default_allocator.qbk
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@ -27,6 +27,19 @@ detects the absence of these members to provide more optimal construction.
[endsect]
[section Examples]
The following snippet shows the use of this allocator as the default allocator
for a container.
```
template<class Key, class Compare = std::less<Key>,
class Allocator = boost::default_allocator<Key> >
class FlatSet;
```
[endsect]
[section Reference]
```
@ -64,7 +77,7 @@ constexpr bool operator==(const default_allocator<T>&,
const default_allocator<U>&) noexcept;
template<class T, class U>
constexpr operator!=(const default_allocator<T>&,
constexpr bool operator!=(const default_allocator<T>&,
const default_allocator<U>&) noexcept;
} /* boost */
@ -73,7 +86,6 @@ constexpr operator!=(const default_allocator<T>&,
[section Members]
[variablelist
[[`constexpr std::size_t max_size() const noexcept;`]
[[variablelist
[[Returns][The largest value `N` for which the call `allocate(N)` might

6
include/boost/core/default_allocator.hpp
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@ -12,9 +12,7 @@ Distributed under the Boost Software License, Version 1.0.
#include <new>
#include <climits>
#if defined(BOOST_NO_CXX11_ALLOCATOR)
#define BOOST_CORE_NO_CXX11_ALLOCATOR
#elif defined(BOOST_LIBSTDCXX_VERSION) && BOOST_LIBSTDCXX_VERSION < 60000
#if defined(BOOST_LIBSTDCXX_VERSION) && BOOST_LIBSTDCXX_VERSION < 60000
#define BOOST_CORE_NO_CXX11_ALLOCATOR
#endif
@ -122,7 +120,7 @@ struct default_allocator {
}
#endif
#if defined(BOOST_CORE_NO_CXX11_ALLOCATOR)
#if defined(BOOST_NO_CXX11_ALLOCATOR) || defined(BOOST_CORE_NO_CXX11_ALLOCATOR)
template<class U, class V>
void construct(U* p, const V& v) {
::new(p) U(v);