@@ -74,11 +74,26 @@ namespace pmr
#endif
// Global memory resources
- memory_resource* new_delete_resource() noexcept;
- memory_resource* null_memory_resource() noexcept;
- memory_resource* set_default_resource(memory_resource* __r) noexcept;
- memory_resource* get_default_resource() noexcept
- __attribute__((__returns_nonnull__));
+
+ /// A pmr::memory_resource that uses `new` to allocate memory
+ [[nodiscard, __gnu__::__returns_nonnull__, __gnu__::__const__]]
+ memory_resource*
+ new_delete_resource() noexcept;
+
+ /// A pmr::memory_resource that always throws `bad_alloc`
+ [[nodiscard, __gnu__::__returns_nonnull__, __gnu__::__const__]]
+ memory_resource*
+ null_memory_resource() noexcept;
+
+ /// Replace the default memory resource pointer
+ [[__gnu__::__returns_nonnull__]]
+ memory_resource*
+ set_default_resource(memory_resource* __r) noexcept;
+
+ /// Get the current default memory resource pointer
+ [[__gnu__::__returns_nonnull__]]
+ memory_resource*
+ get_default_resource() noexcept;
// Pool resource classes
struct pool_options;
@@ -111,6 +126,7 @@ namespace pmr
__attribute__((__nonnull__))
{ return do_deallocate(__p, __bytes, __alignment); }
+ [[nodiscard]]
bool
is_equal(const memory_resource& __other) const noexcept
{ return do_is_equal(__other); }
@@ -126,11 +142,13 @@ namespace pmr
do_is_equal(const memory_resource& __other) const noexcept = 0;
};
+ [[nodiscard]]
inline bool
operator==(const memory_resource& __a, const memory_resource& __b) noexcept
{ return &__a == &__b || __a.is_equal(__b); }
#if __cpp_impl_three_way_comparison < 201907L
+ [[nodiscard]]
inline bool
operator!=(const memory_resource& __a, const memory_resource& __b) noexcept
{ return !(__a == __b); }
@@ -369,6 +387,7 @@ namespace pmr
};
template<typename _Tp1, typename _Tp2>
+ [[nodiscard]]
inline bool
operator==(const polymorphic_allocator<_Tp1>& __a,
const polymorphic_allocator<_Tp2>& __b) noexcept
@@ -376,6 +395,7 @@ namespace pmr
#if __cpp_impl_three_way_comparison < 201907L
template<typename _Tp1, typename _Tp2>
+ [[nodiscard]]
inline bool
operator!=(const polymorphic_allocator<_Tp1>& __a,
const polymorphic_allocator<_Tp2>& __b) noexcept