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             : #include "system.h"
      21             : 
      22             : #include <osl/mutex.h>
      23             : #include <osl/diagnose.h>
      24             : 
      25             : #include <pthread.h>
      26             : #include <stdlib.h>
      27             : 
      28             : #if defined LINUX /* bad hack */
      29             : int pthread_mutexattr_setkind_np(pthread_mutexattr_t *, int);
      30             : #define pthread_mutexattr_settype pthread_mutexattr_setkind_np
      31             : #define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
      32             : #endif
      33             : 
      34             : typedef struct _oslMutexImpl
      35             : {
      36             :     pthread_mutex_t mutex;
      37             : } oslMutexImpl;
      38             : 
      39             : /*****************************************************************************/
      40             : /* osl_createMutex */
      41             : /*****************************************************************************/
      42       86102 : oslMutex SAL_CALL osl_createMutex()
      43             : {
      44       86102 :     oslMutexImpl* pMutex = (oslMutexImpl*) malloc(sizeof(oslMutexImpl));
      45             :     pthread_mutexattr_t aMutexAttr;
      46       86102 :     int nRet=0;
      47             : 
      48             :     OSL_ASSERT(pMutex);
      49             : 
      50       86102 :     if ( pMutex == 0 )
      51             :     {
      52           0 :         return 0;
      53             :     }
      54             : 
      55       86102 :     pthread_mutexattr_init(&aMutexAttr);
      56             : 
      57       86102 :     nRet = pthread_mutexattr_settype(&aMutexAttr, PTHREAD_MUTEX_RECURSIVE);
      58       86102 :     if( nRet == 0 )
      59       86102 :         nRet = pthread_mutex_init(&(pMutex->mutex), &aMutexAttr);
      60       86102 :     if ( nRet != 0 )
      61             :     {
      62             :         OSL_TRACE("osl_createMutex : mutex init/setattr failed. Errno: %d; %s\n",
      63             :                   nRet, strerror(nRet));
      64             : 
      65           0 :         free(pMutex);
      66           0 :         pMutex = 0;
      67             :     }
      68             : 
      69       86102 :     pthread_mutexattr_destroy(&aMutexAttr);
      70             : 
      71       86102 :     return pMutex;
      72             : }
      73             : 
      74       43591 : void SAL_CALL osl_destroyMutex(oslMutexImpl *pMutex)
      75             : {
      76             :     OSL_ASSERT(pMutex);
      77             : 
      78       43591 :     if ( pMutex != 0 )
      79             :     {
      80       43591 :         int nRet=0;
      81             : 
      82       43591 :         nRet = pthread_mutex_destroy(&(pMutex->mutex));
      83             :         if ( nRet != 0 )
      84             :         {
      85             :             OSL_TRACE("osl_destroyMutex : mutex destroy failed. Errno: %d; %s\n",
      86             :                       nRet, strerror(nRet));
      87             :         }
      88             : 
      89       43591 :         free(pMutex);
      90             :     }
      91             : 
      92       43591 :     return;
      93             : }
      94             : 
      95     4679281 : sal_Bool SAL_CALL osl_acquireMutex(oslMutexImpl *pMutex)
      96             : {
      97             :     OSL_ASSERT(pMutex);
      98             : 
      99     4679281 :     if ( pMutex != 0 )
     100             :     {
     101     4679281 :         int nRet=0;
     102             : 
     103     4679281 :         nRet = pthread_mutex_lock(&(pMutex->mutex));
     104     4679282 :         if ( nRet != 0 )
     105             :         {
     106             :             OSL_TRACE("osl_acquireMutex : mutex lock failed. Errno: %d; %s\n",
     107             :                       nRet, strerror(nRet));
     108           0 :             return sal_False;
     109             :         }
     110     4679282 :         return sal_True;
     111             :     }
     112             : 
     113             :     /* not initialized */
     114           0 :     return sal_False;
     115             : }
     116             : 
     117           0 : sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutexImpl *pMutex)
     118             : {
     119             :     OSL_ASSERT(pMutex);
     120             : 
     121           0 :     if ( pMutex )
     122             :     {
     123           0 :         int nRet = 0;
     124           0 :         nRet = pthread_mutex_trylock(&(pMutex->mutex));
     125           0 :         if ( nRet != 0  )
     126           0 :             return sal_False;
     127             : 
     128           0 :         return sal_True;
     129             :     }
     130             : 
     131             :     /* not initialized */
     132           0 :     return sal_False;
     133             : }
     134             : 
     135     4679282 : sal_Bool SAL_CALL osl_releaseMutex(oslMutexImpl *pMutex)
     136             : {
     137             :     OSL_ASSERT(pMutex);
     138             : 
     139     4679282 :     if ( pMutex )
     140             :     {
     141     4679282 :         int nRet=0;
     142     4679282 :         nRet = pthread_mutex_unlock(&(pMutex->mutex));
     143     4679273 :         if ( nRet != 0 )
     144             :         {
     145             :             OSL_TRACE("osl_releaseMutex : mutex unlock failed. Errno: %d; %s\n",
     146             :                       nRet, strerror(nRet));
     147           0 :             return sal_False;
     148             :         }
     149             : 
     150     4679273 :         return sal_True;
     151             :     }
     152             : 
     153             :     /* not initialized */
     154           0 :     return sal_False;
     155             : }
     156             : 
     157             : static oslMutexImpl globalMutexImpl;
     158             : 
     159       85011 : static void globalMutexInitImpl(void) {
     160             :     pthread_mutexattr_t attr;
     161      170022 :     if (pthread_mutexattr_init(&attr) != 0 ||
     162      170022 :         pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) ||
     163      170022 :         pthread_mutex_init(&globalMutexImpl.mutex, &attr) != 0 ||
     164       85011 :         pthread_mutexattr_destroy(&attr) != 0)
     165             :     {
     166           0 :         abort();
     167             :     }
     168       85011 : }
     169             : 
     170     4038261 : oslMutex * SAL_CALL osl_getGlobalMutex()
     171             : {
     172             :     /* necessary to get a "oslMutex *" */
     173             :     static oslMutex globalMutex = (oslMutex) &globalMutexImpl;
     174             : 
     175             :     static pthread_once_t once = PTHREAD_ONCE_INIT;
     176     4038261 :     if (pthread_once(&once, &globalMutexInitImpl) != 0) {
     177           0 :         abort();
     178             :     }
     179             : 
     180     4038261 :     return &globalMutex;
     181             : }
     182             : 
     183             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */