salhelper/source/condition.cxx

   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
  21 #include <salhelper/condition.hxx>
  22 #include <osl/time.h>
  23
  24
  25 using namespace salhelper;
  26
  27
  28 /******************************************************************
  29  *                                                                *
  30  *                     Condition                                  *
  31  *                                                                *
  32  ******************************************************************/
  33
  34 Condition::Condition(osl::Mutex& aMutex)
  35     : m_aMutex(aMutex),
  36       m_aCondition(osl_createCondition())
  37 {
  38 }
  39
  40
  41 Condition::~Condition()
  42 {
  43     osl_destroyCondition(m_aCondition);
  44 }
  45
  46
  47 /******************************************************************
  48  *                                                                *
  49  *              ConditionModifier                                 *
  50  *                                                                *
  51  ******************************************************************/
  52
  53 ConditionModifier::ConditionModifier(Condition& aCond)
  54     : m_aCond(aCond)
  55 {
  56     m_aCond.m_aMutex.acquire();
  57 }
  58
  59
  60 ConditionModifier::~ConditionModifier()
  61 {
  62     if(m_aCond.applies())
  63         osl_setCondition(m_aCond.m_aCondition);
  64
  65     m_aCond.m_aMutex.release();
  66 }
  67
  68
  69
  70 /******************************************************************
  71  *                                                                *
  72  *              ConditionWaiter                                   *
  73  *                                                                *
  74  ******************************************************************/
  75
  76 ConditionWaiter::timedout::timedout() {}
  77
  78 ConditionWaiter::timedout::timedout(timedout const &) {}
  79
  80 ConditionWaiter::timedout::~timedout() {}
  81
  82 ConditionWaiter::timedout &
  83 ConditionWaiter::timedout::operator =(timedout const &) { return *this; }
  84
  85 ConditionWaiter::ConditionWaiter(Condition& aCond)
  86     : m_aCond(aCond)
  87 {
  88     while(true) {
  89         osl_waitCondition(m_aCond.m_aCondition,0);
  90         m_aCond.m_aMutex.acquire();
  91
  92         if(m_aCond.applies())
  93             break;
  94         else {
  95             osl_resetCondition(m_aCond.m_aCondition);
  96             m_aCond.m_aMutex.release();
  97         }
  98     }
  99 }
 100
 101
 102 ConditionWaiter::ConditionWaiter(Condition& aCond,sal_uInt32 milliSec)
 103     throw(
 104         ConditionWaiter::timedout
 105     )
 106     : m_aCond(aCond)
 107 {
 108     TimeValue aTime;
 109     aTime.Seconds = milliSec / 1000;
 110     aTime.Nanosec = 1000000 * ( milliSec % 1000 );
 111
 112     while(true) {
 113         if( osl_waitCondition(m_aCond.m_aCondition,&aTime) ==
 114             osl_cond_result_timeout )
 115             throw timedout();
 116
 117         m_aCond.m_aMutex.acquire();
 118
 119         if(m_aCond.applies())
 120             break;
 121         else {
 122             osl_resetCondition(m_aCond.m_aCondition);
 123             m_aCond.m_aMutex.release();
 124         }
 125     }
 126 }
 127
 128
 129 ConditionWaiter::~ConditionWaiter()
 130 {
 131     if(! m_aCond.applies())
 132         osl_resetCondition(m_aCond.m_aCondition);
 133     m_aCond.m_aMutex.release();
 134 }
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */