LCOV - code coverage report
Current view: top level - sal/rtl - alloc_impl.hxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 13 30 43.3 %
Date: 2014-04-14 Functions: 1 2 50.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_RTL_ALLOC_IMPL_HXX
      21             : #define INCLUDED_RTL_ALLOC_IMPL_HXX
      22             : 
      23             : #include "sal/types.h"
      24             : 
      25             : /** Alignment macros
      26             :  */
      27             : #if SAL_TYPES_ALIGNMENT4 > 1
      28             : #define RTL_MEMORY_ALIGNMENT_4 SAL_TYPES_ALIGNMENT4
      29             : #else
      30             : #define RTL_MEMORY_ALIGNMENT_4 sizeof(int)
      31             : #endif /* SAL_TYPES_ALIGNMENT4 */
      32             : 
      33             : #if SAL_TYPES_ALIGNMENT8 > 1
      34             : #define RTL_MEMORY_ALIGNMENT_8 SAL_TYPES_ALIGNMENT8
      35             : #else
      36             : #define RTL_MEMORY_ALIGNMENT_8 sizeof(void*)
      37             : #endif /* SAL_TYPES_ALIGNMENT8 */
      38             : 
      39             : #if 0  /* @@@ */
      40             : #define RTL_MEMORY_ALIGNMENT_1 8
      41             : #define RTL_MEMORY_ALIGNMENT_2 (sizeof(void*) * 2)
      42             : #endif /* @@@ */
      43             : 
      44             : #define RTL_MEMORY_ALIGN(value, align) (((value) + ((align) - 1)) & ~((align) - 1))
      45             : 
      46             : #define RTL_MEMORY_ISP2(value) (((value) & ((value) - 1)) == 0)
      47             : #define RTL_MEMORY_P2ALIGN(value, align) ((value) & -(sal_IntPtr)(align))
      48             : 
      49             : #define RTL_MEMORY_P2ROUNDUP(value, align) \
      50             :     (-(-(sal_IntPtr)(value) & -(sal_IntPtr)(align)))
      51             : #define RTL_MEMORY_P2END(value, align) \
      52             :     (-(~(sal_IntPtr)(value) & -(sal_IntPtr)(align)))
      53             : 
      54             : /** printf() format specifier(s)
      55             :  *  (from C90 <sys/int_fmtio.h>)
      56             :  */
      57             : #ifndef PRIu64
      58             : #if defined(_MSC_VER)
      59             : #define PRIu64 "I64u"
      60             : #else  /* !_MSC_VER */
      61             : #define PRIu64 "llu"
      62             : #endif /* !_MSC_VER */
      63             : #endif /* PRIu64 */
      64             : 
      65             : /** highbit(): log2() + 1
      66             :  *  (complexity O(1))
      67             :  */
      68             : static inline int
      69     1530200 : highbit(sal_Size n)
      70             : {
      71     1530200 :   int k = 1;
      72             : 
      73     1530200 :   if (n == 0)
      74           0 :     return (0);
      75             : #if SAL_TYPES_SIZEOFLONG == 8
      76             :   if (n & 0xffffffff00000000ul)
      77             :     k |= 32, n >>= 32;
      78             : #endif
      79     1530200 :   if (n & 0xffff0000)
      80           0 :     k |= 16, n >>= 16;
      81     1530200 :   if (n & 0xff00)
      82      340044 :     k |= 8, n >>= 8;
      83     1530200 :   if (n & 0xf0)
      84      935122 :     k |= 4, n >>= 4;
      85     1530200 :   if (n & 0x0c)
      86     1105145 :     k |= 2, n >>= 2;
      87     1530200 :   if (n & 0x02)
      88      510066 :     k++;
      89             : 
      90     1530200 :   return (k);
      91             : }
      92             : 
      93             : /** lowbit(): find first bit set
      94             :  *  (complexity O(1))
      95             :  */
      96             : static inline int
      97           0 : lowbit(sal_Size n)
      98             : {
      99           0 :   int k = 1;
     100             : 
     101           0 :   if (n == 0)
     102           0 :     return (0);
     103             : #if SAL_TYPES_SIZEOFLONG == 8
     104             :   if (!(n & 0xffffffff))
     105             :     k |= 32, n >>= 32;
     106             : #endif
     107           0 :   if (!(n & 0xffff))
     108           0 :     k |= 16, n >>= 16;
     109           0 :   if (!(n & 0xff))
     110           0 :     k |= 8, n >>= 8;
     111           0 :   if (!(n & 0xf))
     112           0 :     k |= 4, n >>= 4;
     113           0 :   if (!(n & 0x3))
     114           0 :     k |= 2, n >>= 2;
     115           0 :   if (!(n & 0x1))
     116           0 :     k++;
     117           0 :   return (k);
     118             : }
     119             : 
     120             : /** Queue manipulation macros
     121             :  *  (doubly linked circular list)
     122             :  *  (complexity O(1))
     123             :  */
     124             : #define QUEUE_STARTED_NAMED(entry, name) \
     125             :   (((entry)->m_##name##next == (entry)) && ((entry)->m_##name##prev == (entry)))
     126             : 
     127             : #define QUEUE_START_NAMED(entry, name) \
     128             : { \
     129             :   (entry)->m_##name##next = (entry); \
     130             :   (entry)->m_##name##prev = (entry); \
     131             : }
     132             : 
     133             : #define QUEUE_REMOVE_NAMED(entry, name) \
     134             : { \
     135             :   (entry)->m_##name##prev->m_##name##next = (entry)->m_##name##next; \
     136             :   (entry)->m_##name##next->m_##name##prev = (entry)->m_##name##prev; \
     137             :   QUEUE_START_NAMED(entry, name); \
     138             : }
     139             : 
     140             : #define QUEUE_INSERT_HEAD_NAMED(head, entry, name) \
     141             : { \
     142             :   (entry)->m_##name##prev = (head); \
     143             :   (entry)->m_##name##next = (head)->m_##name##next; \
     144             :   (head)->m_##name##next = (entry); \
     145             :   (entry)->m_##name##next->m_##name##prev = (entry); \
     146             : }
     147             : 
     148             : #define QUEUE_INSERT_TAIL_NAMED(head, entry, name) \
     149             : { \
     150             :   (entry)->m_##name##next = (head); \
     151             :   (entry)->m_##name##prev = (head)->m_##name##prev; \
     152             :   (head)->m_##name##prev = (entry); \
     153             :   (entry)->m_##name##prev->m_##name##next = (entry); \
     154             : }
     155             : 
     156             : /** rtl_memory_lock_type
     157             :  *  (platform dependent)
     158             :  */
     159             : #if defined(SAL_UNX)
     160             : 
     161             : #include <unistd.h>
     162             : #include <pthread.h>
     163             : 
     164             : typedef pthread_mutex_t rtl_memory_lock_type;
     165             : 
     166             : #define RTL_MEMORY_LOCK_INIT(lock)    pthread_mutex_init((lock), NULL)
     167             : #define RTL_MEMORY_LOCK_DESTROY(lock) pthread_mutex_destroy((lock))
     168             : 
     169             : #define RTL_MEMORY_LOCK_ACQUIRE(lock) pthread_mutex_lock((lock))
     170             : #define RTL_MEMORY_LOCK_RELEASE(lock) pthread_mutex_unlock((lock))
     171             : 
     172             : #elif defined(SAL_W32)
     173             : 
     174             : #define WIN32_LEAN_AND_MEAN
     175             : #ifdef _MSC_VER
     176             : #pragma warning(push,1) /* disable warnings within system headers */
     177             : #endif
     178             : #include <windows.h>
     179             : #ifdef _MSC_VER
     180             : #pragma warning(pop)
     181             : #endif
     182             : 
     183             : typedef CRITICAL_SECTION rtl_memory_lock_type;
     184             : 
     185             : #define RTL_MEMORY_LOCK_INIT(lock)    InitializeCriticalSection((lock))
     186             : #define RTL_MEMORY_LOCK_DESTROY(lock) DeleteCriticalSection((lock))
     187             : 
     188             : #define RTL_MEMORY_LOCK_ACQUIRE(lock) EnterCriticalSection((lock))
     189             : #define RTL_MEMORY_LOCK_RELEASE(lock) LeaveCriticalSection((lock))
     190             : 
     191             : #else
     192             : #error Unknown platform
     193             : #endif /* SAL_UNX | SAL_W32 */
     194             : 
     195             : /** Cache creation flags.
     196             :  *  @internal
     197             :  */
     198             : #define RTL_CACHE_FLAG_NOMAGAZINE   (1 << 13) /* w/o magazine layer */
     199             : #define RTL_CACHE_FLAG_QUANTUMCACHE (2 << 13) /* used as arena quantum cache */
     200             : 
     201             : typedef enum { AMode_CUSTOM, AMode_SYSTEM, AMode_UNSET } AllocMode;
     202             : 
     203             : extern AllocMode alloc_mode;
     204             : 
     205             : #endif /* INCLUDED_RTL_ALLOC_IMPL_HXX */
     206             : 
     207             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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