[gcc r13-429] libstdc++: Improve doxygen docs for std::allocator
Jonathan Wakely
redi@gcc.gnu.org
Fri May 13 12:35:13 GMT 2022
https://gcc.gnu.org/g:171f41f124bc1d5d80a395d27833a578cceba9e7
commit r13-429-g171f41f124bc1d5d80a395d27833a578cceba9e7
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu May 12 13:44:52 2022 +0100
libstdc++: Improve doxygen docs for std::allocator
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Define __allocator_base
so that Doxygen shows the right base-class for std::allocator.
* include/bits/alloc_traits.h: Improve doxygen docs.
* include/bits/allocator.h: Likewise.
* include/bits/new_allocator.h: Likewise.
* include/ext/new_allocator.h: Likewise.
Diff:
---
libstdc++-v3/doc/doxygen/user.cfg.in | 1 +
libstdc++-v3/include/bits/alloc_traits.h | 5 +++++
libstdc++-v3/include/bits/allocator.h | 15 ++++++++++++++-
libstdc++-v3/include/bits/new_allocator.h | 19 +++++++++++++------
libstdc++-v3/include/ext/new_allocator.h | 12 +++++++++---
5 files changed, 42 insertions(+), 10 deletions(-)
diff --git a/libstdc++-v3/doc/doxygen/user.cfg.in b/libstdc++-v3/doc/doxygen/user.cfg.in
index 02ce290d3ad..cfda7ab13c4 100644
--- a/libstdc++-v3/doc/doxygen/user.cfg.in
+++ b/libstdc++-v3/doc/doxygen/user.cfg.in
@@ -2405,6 +2405,7 @@ PREDEFINED = __cplusplus=202002L \
_GLIBCXX_HAVE_IS_CONSTANT_EVALUATED \
_GLIBCXX_HAVE_BUILTIN_LAUNDER \
"_GLIBCXX_DOXYGEN_ONLY(X)=X " \
+ __allocator_base=std::__new_allocator \
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h
index a4d06d3fc7a..f9ca37fd7d6 100644
--- a/libstdc++-v3/include/bits/alloc_traits.h
+++ b/libstdc++-v3/include/bits/alloc_traits.h
@@ -661,6 +661,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ return __rhs; }
};
+ /// @cond undocumented
#if __cplusplus < 201703L
template<typename _Alloc>
inline void
@@ -818,8 +819,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__a.deallocate(__a.allocate(1u), 1u);
};
#endif
+ /// @endcond
#endif // C++11
+ /// @cond undocumented
+
/**
* Destroy a range of objects using the supplied allocator. For
* non-default allocators we do not optimize away invocation of
@@ -849,6 +853,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
_Destroy(__first, __last);
}
+ /// @endcond
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
diff --git a/libstdc++-v3/include/bits/allocator.h b/libstdc++-v3/include/bits/allocator.h
index f7770165273..ee1121b080a 100644
--- a/libstdc++-v3/include/bits/allocator.h
+++ b/libstdc++-v3/include/bits/allocator.h
@@ -67,7 +67,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// explicit specialization, with the historical ABI properties, but with
// the same members that are present in the primary template.
- /// allocator<void> specialization.
+ /** std::allocator<void> specialization.
+ *
+ * @headerfile memory
+ */
template<>
class allocator<void>
{
@@ -119,6 +122,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* for further details.
*
* @tparam _Tp Type of allocated object.
+ *
+ * @headerfile memory
*/
template<typename _Tp>
class allocator : public __allocator_base<_Tp>
@@ -209,6 +214,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Inherit everything else.
};
+ /** Equality comparison for std::allocator objects
+ *
+ * @return true, for all std::allocator objects.
+ * @relates std::allocator
+ */
template<typename _T1, typename _T2>
inline _GLIBCXX20_CONSTEXPR bool
operator==(const allocator<_T1>&, const allocator<_T2>&)
@@ -223,6 +233,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ return false; }
#endif
+ /// @cond undocumented
+
// Invalid allocator<cv T> partial specializations.
// allocator_traits::rebind_alloc can be used to form a valid allocator type.
template<typename _Tp>
@@ -325,6 +337,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
};
#endif
+ /// @endcond
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
diff --git a/libstdc++-v3/include/bits/new_allocator.h b/libstdc++-v3/include/bits/new_allocator.h
index 20ef20fe118..1a5bc51b956 100644
--- a/libstdc++-v3/include/bits/new_allocator.h
+++ b/libstdc++-v3/include/bits/new_allocator.h
@@ -43,14 +43,21 @@ namespace std _GLIBCXX_VISIBILITY(default)
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
- * @brief An allocator that uses global new, as per C++03 [20.4.1].
- * @ingroup allocators
+ * @brief An allocator that uses global `new`, as per C++03 [20.4.1].
+ * @ingroup allocators
*
- * This is precisely the allocator defined in the C++ Standard.
- * - all allocation calls operator new
- * - all deallocation calls operator delete
+ * This is precisely the allocator defined in the C++ Standard.
+ * - all allocation calls `operator new`
+ * - all deallocation calls `operator delete`
*
- * @tparam _Tp Type of allocated object.
+ * This is the default base-class implementation of `std::allocator`,
+ * and is also the base-class of the `__gnu_cxx::new_allocator` extension.
+ * You should use either `std::allocator` or `__gnu_cxx::new_allocator`
+ * instead of using this directly.
+ *
+ * @tparam _Tp Type of allocated object.
+ *
+ * @headerfile memory
*/
template<typename _Tp>
class __new_allocator
diff --git a/libstdc++-v3/include/ext/new_allocator.h b/libstdc++-v3/include/ext/new_allocator.h
index b8f5fcccccc..96e6523977a 100644
--- a/libstdc++-v3/include/ext/new_allocator.h
+++ b/libstdc++-v3/include/ext/new_allocator.h
@@ -36,14 +36,20 @@ namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
- * @brief An allocator that uses global new, as per C++03 [20.4.1].
+ * @brief An allocator that uses global `new`, as per C++03 [20.4.1].
* @ingroup allocators
*
* This is precisely the allocator defined in the C++ Standard.
- * - all allocation calls operator new
- * - all deallocation calls operator delete
+ * - all allocation calls `operator new`
+ * - all deallocation calls `operator delete`
+ *
+ * This is a non-standard extension that can be used to guarantee
+ * allocation from `new` even if the library has been configured to
+ * use a different implementation for `std::allocator`.
*
* @tparam _Tp Type of allocated object.
+ *
+ * @headerfile ext/new_allocator.h
*/
template<typename _Tp>
class new_allocator : public std::__new_allocator<_Tp>
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