Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/sc/inc/stlalgorithm.hxx b/sc/inc/stlalgorithm.hxx
new file mode 100644
index 000000000..f2143b9a8
--- /dev/null
+++ b/sc/inc/stlalgorithm.hxx
@@ -0,0 +1,76 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <limits>
+
+#include <rtl/alloc.h>
+
+namespace sc {
+
+/**
+ * Custom allocator for STL container to ensure that the base address of
+ * allocated storage is aligned to a specified boundary.
+ */
+template<typename T, size_t Alignment>
+class AlignedAllocator
+{
+public:
+    typedef T value_type;
+    typedef size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef T* void_pointer;
+
+    typedef T& reference;
+    typedef const T& const_reference;
+
+    template<typename Type2>
+    struct rebind
+    {
+        typedef AlignedAllocator<Type2,Alignment> other;
+    };
+
+    AlignedAllocator() {}
+
+    template<typename Type2>
+    AlignedAllocator(const AlignedAllocator<Type2,Alignment>&) {}
+
+    static void construct(T* p, const value_type& val) { new(p) value_type(val); }
+    static void destroy(T* p)
+    {
+        p->~value_type();
+        (void)p; // avoid bogus MSVC '12 "unreferenced formal parameter" warning
+    }
+
+    static size_type max_size()
+    {
+        return std::numeric_limits<size_type>::max() / sizeof(value_type);
+    }
+
+    bool operator== (const AlignedAllocator&) const { return true; }
+    bool operator!= (const AlignedAllocator&) const { return false; }
+
+    static pointer allocate(size_type n)
+    {
+        return static_cast<pointer>(rtl_allocateAlignedMemory(Alignment, n*sizeof(value_type)));
+    }
+
+    static void deallocate(pointer p, size_type)
+    {
+        rtl_freeAlignedMemory(p);
+    }
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */