Condition.cpp
Go to the documentation of this file.
1 /*=============================================================================
2  Copyright (C) 2012 Allied Vision Technologies. All Rights Reserved.
3 
4  Redistribution of this file, in original or modified form, without
5  prior written consent of Allied Vision Technologies is prohibited.
6 
7 -------------------------------------------------------------------------------
8 
9  File: Condition.cpp
10 
11  Description: Implementation of a condition class.
12  (This include file is for internal use only.)
13 
14 -------------------------------------------------------------------------------
15 
16  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
17  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF TITLE,
18  NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
24  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 
27 =============================================================================*/
28 
30 
31 namespace AVT {
32 namespace VmbAPI {
33 
35  : m_nWaiterNumber( 0 )
36  , m_nReleaseNumber( 0 )
37  , m_bLocked( true )
38 {
39  SP_SET( m_Semaphore, new Semaphore() );
40 }
41 
42 void Condition::Wait( const BasicLockable &rLockable )
43 {
44  Wait( rLockable.GetMutex() );
45 }
46 
47 void Condition::Wait( const MutexPtr &rMutex )
48 {
50 
51  SP_ACCESS( rMutex )->Unlock();
52 
53  SP_ACCESS( m_Semaphore )->Acquire();
54 
55  SP_ACCESS( rMutex) ->Lock();
56 
57  if ( m_nWaiterNumber > 0 )
58  {
60  }
61 
62  if ( m_nReleaseNumber > 0 )
63  {
65  }
66 
67  if( m_nWaiterNumber > 0
68  && m_nReleaseNumber > 0 )
69  {
70  SP_ACCESS( m_Semaphore )->Release();
71  m_bLocked = false;
72  }
73  else
74  {
75  m_bLocked = true;
76  }
77 
79  {
81  }
82 }
83 
84 void Condition::Signal( bool bSingle )
85 {
87  {
88  if( true == bSingle )
89  {
91  }
92  else
93  {
95  }
96 
97  if( true == m_bLocked )
98  {
99  SP_ACCESS( m_Semaphore )->Release();
100  m_bLocked = false;
101  }
102  }
103 }
104 
105 }} // namespace AVT::VmbAPI
void Signal(bool bSingle=false)
Definition: Condition.cpp:84
#define SP_ACCESS(sp)
#define SP_SET(sp, rawPtr)
MutexPtr GetMutex() const
void Wait(const BasicLockable &rLockable)
Definition: Condition.cpp:42
unsigned long m_nWaiterNumber
Definition: Condition.h:44
unsigned long m_nReleaseNumber
Definition: Condition.h:43


avt_vimba_camera
Author(s): Miquel Massot , Allied Vision Technologies
autogenerated on Wed Jun 5 2019 22:22:40