Imported Upstream version 1.49.0upstream/1.49.0

1 files changed, 84 insertions, 0 deletions

diff --git a/libs/unordered/test/helpers/allocator.hpp b/libs/unordered/test/helpers/allocator.hpp
new file mode 100644
index 0000000000..5482baa06c
--- /dev/null
+++ b/libs/unordered/test/helpers/allocator.hpp
@@ -0,0 +1,84 @@
+
+// Copyright 2006-2009 Daniel James.
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#if !defined(BOOST_UNORDERED_TEST_MALLOC_ALLOCATOR_HEADER)
+#define BOOST_UNORDERED_TEST_MALLOC_ALLOCATOR_HEADER
+
+#include <cstddef>
+#include <cstdlib>
+#include <boost/limits.hpp>
+#include <new>
+
+#if defined(BOOST_MSVC)
+#pragma warning(push)
+#pragma warning(disable:4100) // unreferenced formal parameter
+#endif
+
+namespace test
+{
+    template <class T>
+    struct malloc_allocator
+    {
+        typedef std::size_t size_type;
+        typedef std::ptrdiff_t difference_type;
+        typedef T* pointer;
+        typedef T const* const_pointer;
+        typedef T& reference;
+        typedef T const& const_reference;
+        typedef T value_type;
+
+        template <class U> struct rebind { typedef malloc_allocator<U> other; };
+
+        malloc_allocator() {}
+        template <class Y> malloc_allocator(malloc_allocator<Y> const&) {}
+        malloc_allocator(malloc_allocator const&) {}
+
+        pointer address(reference r) { return &r; }
+        const_pointer address(const_reference r) { return &r; }
+
+        pointer allocate(size_type n) {
+            using namespace std;
+            T* ptr = static_cast<T*>(malloc(n * sizeof(T)));
+            if(!ptr) throw std::bad_alloc();
+            return ptr;
+        }
+
+        pointer allocate(size_type n, void const* u) { return allocate(n); }
+
+        void deallocate(pointer p, size_type) {
+            using namespace std;
+            free(p);
+        }
+        void construct(pointer p, T const& t) { new(p) T(t); }
+        void destroy(pointer p) { p->~T(); }
+
+        size_type max_size() const {
+            return (std::numeric_limits<size_type>::max)();
+        }
+
+        bool operator==(malloc_allocator const&) const { return true; }
+        bool operator!=(malloc_allocator const&) const { return false; }
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+        template <class T> void deallocate(T* p, size_type) {
+            using namespace std;
+            free(p);
+        }
+        char* _Charalloc(size_type n) {
+            using namespace std;
+            T* ptr = static_cast<T*>(malloc(n * sizeof(char)));
+            if(!ptr) throw std::bad_alloc();
+            return (char*) ptr;
+        }
+#endif
+    };
+}
+
+#if defined(BOOST_MSVC)
+#pragma warning(pop)
+#pragma warning(disable:4100) // unreferenced formal parameter
+#endif
+
+#endif