sal/osl/unx/conditn.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 #include <sal/config.h>
  21
  22 #include <assert.h>
  23 #include <condition_variable>
  24 #include <mutex>
  25
  26 #include <sal/log.hxx>
  27 #include <sal/types.h>
  28
  29 #include <osl/conditn.h>
  30 #include <osl/time.h>
  31
  32 namespace {
  33
  34 struct oslConditionImpl
  35 {
  36     std::condition_variable  m_Condition;
  37     std::mutex      m_Lock;
  38     bool            m_State = false;
  39 };
  40
  41 }
  42
  43 oslCondition SAL_CALL osl_createCondition()
  44 {
  45     oslConditionImpl* pCond = new oslConditionImpl;
  46
  47     SAL_INFO( "sal.osl.condition", "osl_createCondition(): " << pCond );
  48
  49     return static_cast<oslCondition>(pCond);
  50 }
  51
  52 void SAL_CALL osl_destroyCondition(oslCondition Condition)
  53 {
  54     oslConditionImpl* pCond;
  55
  56     pCond = static_cast<oslConditionImpl*>(Condition);
  57
  58     SAL_INFO( "sal.osl.condition", "osl_destroyCondition(" << pCond << ")" );
  59
  60     if ( pCond )
  61         delete pCond;
  62 }
  63
  64 sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
  65 {
  66    oslConditionImpl* pCond;
  67
  68    assert(Condition);
  69    pCond = static_cast<oslConditionImpl*>(Condition);
  70
  71    {
  72        std::unique_lock g(pCond->m_Lock);
  73
  74        pCond->m_State = true;
  75        pCond->m_Condition.notify_all();
  76    }
  77    SAL_INFO( "sal.osl.condition", "osl_setCondition(" << pCond << ")" );
  78
  79    return true;
  80
  81 }
  82
  83 sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
  84 {
  85     oslConditionImpl* pCond;
  86
  87     assert(Condition);
  88
  89     pCond = static_cast<oslConditionImpl*>(Condition);
  90
  91     {
  92         std::unique_lock g(pCond->m_Lock);
  93
  94         pCond->m_State = false;
  95     }
  96     SAL_INFO( "sal.osl.condition", "osl_resetCondition(" << pCond << ")" );
  97
  98     return true;
  99 }
 100
 101 oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue* pTimeout)
 102 {
 103     oslConditionImpl* pCond;
 104
 105     assert(Condition);
 106     pCond = static_cast<oslConditionImpl*>(Condition);
 107
 108     SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << ")" );
 109
 110     {
 111         std::unique_lock g(pCond->m_Lock);
 112
 113         if ( pTimeout )
 114         {
 115             if ( ! pCond->m_State )
 116             {
 117                 auto duration = std::chrono::seconds(pTimeout->Seconds)
 118                                 + std::chrono::nanoseconds(pTimeout->Nanosec);
 119                 if (!pCond->m_Condition.wait_for(g, duration, [&pCond](){return pCond->m_State;}))
 120                     return osl_cond_result_timeout;
 121             }
 122         }
 123         else
 124         {
 125             pCond->m_Condition.wait(g, [&pCond](){return pCond->m_State;});
 126         }
 127     }
 128     SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << "): OK" );
 129
 130     return osl_cond_result_ok;
 131 }
 132
 133 sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
 134 {
 135     bool State;
 136     oslConditionImpl* pCond;
 137
 138     assert(Condition);
 139     pCond = static_cast<oslConditionImpl*>(Condition);
 140
 141     {
 142         std::unique_lock g(pCond->m_Lock);
 143
 144         State = pCond->m_State;
 145     }
 146     SAL_INFO( "sal.osl.condition", "osl_checkCondition(" << pCond << "): " << (State ? "YES" : "NO") );
 147
 148     return State;
 149 }
 150
 151 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */