4a0a0bf65a
Change-Id: I88170c9d033e0299c4b4462f7d0edb83152b4fbb Reviewed-on: https://gerrit.libreoffice.org/2367 Reviewed-by: Michael Meeks <michael.meeks@suse.com> Tested-by: Michael Meeks <michael.meeks@suse.com>
209 lines
5.3 KiB
C++
209 lines
5.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_RTL_ALLOC_IMPL_HXX
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#define INCLUDED_RTL_ALLOC_IMPL_HXX
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#include "sal/types.h"
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/** Alignment macros
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*/
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#if SAL_TYPES_ALIGNMENT4 > 1
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#define RTL_MEMORY_ALIGNMENT_4 SAL_TYPES_ALIGNMENT4
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#else
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#define RTL_MEMORY_ALIGNMENT_4 sizeof(int)
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#endif /* SAL_TYPES_ALIGNMENT4 */
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#if SAL_TYPES_ALIGNMENT8 > 1
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#define RTL_MEMORY_ALIGNMENT_8 SAL_TYPES_ALIGNMENT8
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#else
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#define RTL_MEMORY_ALIGNMENT_8 sizeof(void*)
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#endif /* SAL_TYPES_ALIGNMENT8 */
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#if 0 /* @@@ */
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#define RTL_MEMORY_ALIGNMENT_1 8
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#define RTL_MEMORY_ALIGNMENT_2 (sizeof(void*) * 2)
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#endif /* @@@ */
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#define RTL_MEMORY_ALIGN(value, align) (((value) + ((align) - 1)) & ~((align) - 1))
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#define RTL_MEMORY_ISP2(value) (((value) & ((value) - 1)) == 0)
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#define RTL_MEMORY_P2ALIGN(value, align) ((value) & -(sal_IntPtr)(align))
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#define RTL_MEMORY_P2ROUNDUP(value, align) \
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(-(-(sal_IntPtr)(value) & -(sal_IntPtr)(align)))
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#define RTL_MEMORY_P2END(value, align) \
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(-(~(sal_IntPtr)(value) & -(sal_IntPtr)(align)))
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/** printf() format specifier(s)
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* (from C90 <sys/int_fmtio.h>)
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*/
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#ifndef PRIu64
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#if defined(_MSC_VER)
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#define PRIu64 "I64u"
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#else /* !_MSC_VER */
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#define PRIu64 "llu"
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#endif /* !_MSC_VER */
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#endif /* PRIu64 */
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/** highbit(): log2() + 1
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* (complexity O(1))
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*/
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static inline int
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highbit(sal_Size n)
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{
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int k = 1;
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if (n == 0)
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return (0);
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#if SAL_TYPES_SIZEOFLONG == 8
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if (n & 0xffffffff00000000ul)
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k |= 32, n >>= 32;
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#endif
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if (n & 0xffff0000)
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k |= 16, n >>= 16;
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if (n & 0xff00)
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k |= 8, n >>= 8;
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if (n & 0xf0)
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k |= 4, n >>= 4;
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if (n & 0x0c)
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k |= 2, n >>= 2;
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if (n & 0x02)
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k++;
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return (k);
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}
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/** lowbit(): find first bit set
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* (complexity O(1))
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*/
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static inline int
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lowbit(sal_Size n)
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{
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int k = 1;
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if (n == 0)
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return (0);
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#if SAL_TYPES_SIZEOFLONG == 8
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if (!(n & 0xffffffff))
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k |= 32, n >>= 32;
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#endif
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if (!(n & 0xffff))
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k |= 16, n >>= 16;
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if (!(n & 0xff))
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k |= 8, n >>= 8;
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if (!(n & 0xf))
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k |= 4, n >>= 4;
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if (!(n & 0x3))
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k |= 2, n >>= 2;
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if (!(n & 0x1))
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k++;
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return (k);
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}
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/** Queue manipulation macros
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* (doubly linked circular list)
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* (complexity O(1))
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*/
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#define QUEUE_STARTED_NAMED(entry, name) \
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(((entry)->m_##name##next == (entry)) && ((entry)->m_##name##prev == (entry)))
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#define QUEUE_START_NAMED(entry, name) \
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{ \
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(entry)->m_##name##next = (entry); \
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(entry)->m_##name##prev = (entry); \
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}
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#define QUEUE_REMOVE_NAMED(entry, name) \
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{ \
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(entry)->m_##name##prev->m_##name##next = (entry)->m_##name##next; \
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(entry)->m_##name##next->m_##name##prev = (entry)->m_##name##prev; \
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QUEUE_START_NAMED(entry, name); \
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}
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#define QUEUE_INSERT_HEAD_NAMED(head, entry, name) \
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{ \
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(entry)->m_##name##prev = (head); \
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(entry)->m_##name##next = (head)->m_##name##next; \
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(head)->m_##name##next = (entry); \
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(entry)->m_##name##next->m_##name##prev = (entry); \
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}
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#define QUEUE_INSERT_TAIL_NAMED(head, entry, name) \
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{ \
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(entry)->m_##name##next = (head); \
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(entry)->m_##name##prev = (head)->m_##name##prev; \
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(head)->m_##name##prev = (entry); \
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(entry)->m_##name##prev->m_##name##next = (entry); \
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}
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/** rtl_memory_lock_type
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* (platform dependent)
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*/
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#if defined(SAL_UNX)
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#include <unistd.h>
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#include <pthread.h>
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typedef pthread_mutex_t rtl_memory_lock_type;
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#define RTL_MEMORY_LOCK_INIT(lock) pthread_mutex_init((lock), NULL)
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#define RTL_MEMORY_LOCK_DESTROY(lock) pthread_mutex_destroy((lock))
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#define RTL_MEMORY_LOCK_ACQUIRE(lock) pthread_mutex_lock((lock))
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#define RTL_MEMORY_LOCK_RELEASE(lock) pthread_mutex_unlock((lock))
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#elif defined(SAL_W32)
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#define WIN32_LEAN_AND_MEAN
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#ifdef _MSC_VER
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#pragma warning(push,1) /* disable warnings within system headers */
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#endif
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#include <windows.h>
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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typedef CRITICAL_SECTION rtl_memory_lock_type;
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#define RTL_MEMORY_LOCK_INIT(lock) InitializeCriticalSection((lock))
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#define RTL_MEMORY_LOCK_DESTROY(lock) DeleteCriticalSection((lock))
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#define RTL_MEMORY_LOCK_ACQUIRE(lock) EnterCriticalSection((lock))
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#define RTL_MEMORY_LOCK_RELEASE(lock) LeaveCriticalSection((lock))
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#else
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#error Unknown platform
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#endif /* SAL_UNX | SAL_W32 */
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/** Cache creation flags.
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* @internal
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*/
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#define RTL_CACHE_FLAG_NOMAGAZINE (1 << 13) /* w/o magazine layer */
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#define RTL_CACHE_FLAG_QUANTUMCACHE (2 << 13) /* used as arena quantum cache */
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typedef enum { AMode_CUSTOM, AMode_SYSTEM, AMode_UNSET } AllocMode;
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extern AllocMode alloc_mode;
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#endif /* INCLUDED_RTL_ALLOC_IMPL_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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