1 files changed, 218 insertions, 0 deletions
diff --git a/sal/rtl/alloc_impl.hxx b/sal/rtl/alloc_impl.hxx
new file mode 100644
index 0000000000..398597c483
--- /dev/null
+++ b/sal/rtl/alloc_impl.hxx
@@ -0,0 +1,218 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SAL_RTL_ALLOC_IMPL_HXX
+#define INCLUDED_SAL_RTL_ALLOC_IMPL_HXX
+
+#include <sal/types.h>
+
+/** Alignment macros
+ */
+#if SAL_TYPES_ALIGNMENT4 > 1
+#define RTL_MEMORY_ALIGNMENT_4 SAL_TYPES_ALIGNMENT4
+#else
+#define RTL_MEMORY_ALIGNMENT_4 sizeof(int)
+#endif /* SAL_TYPES_ALIGNMENT4 */
+
+#if SAL_TYPES_ALIGNMENT8 > 1
+#define RTL_MEMORY_ALIGNMENT_8 SAL_TYPES_ALIGNMENT8
+#else
+#define RTL_MEMORY_ALIGNMENT_8 sizeof(void*)
+#endif /* SAL_TYPES_ALIGNMENT8 */
+
+#if 0  /* @@@ */
+#define RTL_MEMORY_ALIGNMENT_1 8
+#define RTL_MEMORY_ALIGNMENT_2 (sizeof(void*) * 2)
+#endif /* @@@ */
+
+#define RTL_MEMORY_ALIGN(value, align) (((value) + ((align) - 1)) & ~((align) - 1))
+
+#define RTL_MEMORY_ISP2(value) (((value) & ((value) - 1)) == 0)
+#define RTL_MEMORY_P2ALIGN(value, align) ((value) & -static_cast<sal_IntPtr>(align))
+
+#define RTL_MEMORY_P2ROUNDUP(value, align) \
+    (-(-static_cast<sal_IntPtr>(value) & -static_cast<sal_IntPtr>(align)))
+#define RTL_MEMORY_P2END(value, align) \
+    (-(~static_cast<sal_IntPtr>(value) & -static_cast<sal_IntPtr>(align)))
+
+/** highbit(): log2() + 1
+    (complexity O(1))
+*/
+static inline unsigned int highbit(sal_Size n)
+{
+  unsigned int k = 1;
+
+  if (n == 0)
+    return 0;
+  if constexpr (sizeof(n) >= 8)
+  {
+    if (n & 0xffffffff00000000)
+    {
+      k |= 32;
+      n >>= 32;
+    }
+  }
+  if (n & 0xffff0000)
+  {
+    k |= 16;
+    n >>= 16;
+  }
+  if (n & 0xff00)
+  {
+    k |= 8;
+    n >>= 8;
+  }
+  if (n & 0xf0)
+  {
+    k |= 4;
+    n >>= 4;
+  }
+  if (n & 0x0c)
+  {
+    k |= 2;
+    n >>= 2;
+  }
+  if (n & 0x02)
+    k++;
+
+  return k;
+}
+
+/** find first bit set
+    (complexity O(1))
+*/
+static inline unsigned int lowbit(sal_Size n)
+{
+  unsigned int k = 1;
+
+  if (n == 0)
+    return 0;
+
+  if constexpr (sizeof(n) >= 8)
+  {
+    if (!(n & 0xffffffff))
+    {
+      k |= 32;
+      n >>= 32;
+    }
+  }
+
+  if (!(n & 0xffff))
+  {
+    k |= 16;
+    n >>= 16;
+  }
+
+  if (!(n & 0xff))
+  {
+    k |= 8;
+    n >>= 8;
+  }
+
+  if (!(n & 0xf))
+  {
+    k |= 4;
+    n >>= 4;
+  }
+
+  if (!(n & 0x3))
+  {
+    k |= 2;
+    n >>= 2;
+  }
+
+  if (!(n & 0x1))
+    k++;
+
+  return k;
+}
+
+/** Queue manipulation macros
+    (doubly linked circular list)
+    (complexity O(1))
+*/
+#define QUEUE_STARTED_NAMED(entry, name) \
+  (((entry)->m_##name##next == (entry)) && ((entry)->m_##name##prev == (entry)))
+
+#define QUEUE_START_NAMED(entry, name) \
+{ \
+  (entry)->m_##name##next = (entry); \
+  (entry)->m_##name##prev = (entry); \
+}
+
+#define QUEUE_REMOVE_NAMED(entry, name) \
+{ \
+  (entry)->m_##name##prev->m_##name##next = (entry)->m_##name##next; \
+  (entry)->m_##name##next->m_##name##prev = (entry)->m_##name##prev; \
+  QUEUE_START_NAMED(entry, name); \
+}
+
+#define QUEUE_INSERT_HEAD_NAMED(head, entry, name) \
+{ \
+  (entry)->m_##name##prev = (head); \
+  (entry)->m_##name##next = (head)->m_##name##next; \
+  (head)->m_##name##next = (entry); \
+  (entry)->m_##name##next->m_##name##prev = (entry); \
+}
+
+#define QUEUE_INSERT_TAIL_NAMED(head, entry, name) \
+{ \
+  (entry)->m_##name##next = (head); \
+  (entry)->m_##name##prev = (head)->m_##name##prev; \
+  (head)->m_##name##prev = (entry); \
+  (entry)->m_##name##prev->m_##name##next = (entry); \
+}
+
+#if defined(SAL_UNX)
+
+#include <pthread.h>
+
+typedef pthread_mutex_t rtl_memory_lock_type;
+
+#define RTL_MEMORY_LOCK_INIT(lock)    pthread_mutex_init((lock), nullptr)
+#define RTL_MEMORY_LOCK_DESTROY(lock) pthread_mutex_destroy((lock))
+
+#define RTL_MEMORY_LOCK_ACQUIRE(lock) pthread_mutex_lock((lock))
+#define RTL_MEMORY_LOCK_RELEASE(lock) pthread_mutex_unlock((lock))
+
+#elif defined(_WIN32)
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+typedef CRITICAL_SECTION rtl_memory_lock_type;
+
+#define RTL_MEMORY_LOCK_INIT(lock)    InitializeCriticalSection((lock))
+#define RTL_MEMORY_LOCK_DESTROY(lock) DeleteCriticalSection((lock))
+
+#define RTL_MEMORY_LOCK_ACQUIRE(lock) EnterCriticalSection((lock))
+#define RTL_MEMORY_LOCK_RELEASE(lock) LeaveCriticalSection((lock))
+
+#else
+#error Unknown platform
+#endif /* SAL_UNX | _WIN32 */
+
+/** Cache creation flags.
+    @internal
+*/
+#define RTL_CACHE_FLAG_NOMAGAZINE   (1 << 13) /* w/o magazine layer */
+
+#endif // INCLUDED_SAL_RTL_ALLOC_IMPL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */