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Thread: Help with memory mangment or class deconstraction

  1. 30th May 2011, 18:36 #1
    iNewLegend
    iNewLegend is offline Beginner
    Join Date
    May 2011
    Posts
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    Qt products
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    Platforms
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    Default Re: Help with memory mangment or class deconstraction

    i writing simple network class but i have some problem.

    program start with 1MB memory use



    when i connect 100 connections


    memroy become 1.5MB use


    when i disconnect 100 connections

    memory become 3MB use


    the problem i think is CClient never get deleted.

    the code
    CPP :
    Qt Code: 
    1. #include "TServer.h"
    2. //------------------------------------------------------------------------------------------------------------------------
    3.  
    4. CClient::CClient(CServer * parent, int handle)
    5. {
    6.     m_parent = parent;
    7.     m_Handle = handle;
    8. }
    9. //------------------------------------------------------------------------------------------------------------------------
    10.  
    11. void CClient::run()
    12. {
    13.     m_Socket = new QTcpSocket();
    14.     // ----
    15.     if(m_Socket->setSocketDescriptor(m_Handle) == false)
    16.     {
    17.         m_parent->onError(__FUNCTION__, m_Socket->errorString());
    18.     }
    19.     else
    20.     {
    21.         connect(m_Socket, SIGNAL(disconnected()), this, SLOT(disconnected()));
    22.         connect(m_Socket, SIGNAL(readyRead()), this, SLOT(readAble()));
    23.         connect(m_Socket, SIGNAL(destroyed()), this, SLOT(dead()));
    24.     }
    25.     // ----
    26.     m_parent->onConnect(m_Handle);
    27. }
    28. //------------------------------------------------------------------------------------------------------------------------
    29.  
    30. void CClient::dead()
    31. {
    32.     printf("dead \n"); // never called
    33. }
    34. //------------------------------------------------------------------------------------------------------------------------
    35.  
    36. void CClient::disconnected()
    37. {
    38.     m_parent->onDisconnect(m_Handle);
    39.  
    40. }
    41. //------------------------------------------------------------------------------------------------------------------------
    42.  
    43. void CClient::readAble()
    44. {
    45.     m_parent->onRecv(m_Handle, m_Socket->readAll());
    46. }
    47. //------------------------------------------------------------------------------------------------------------------------
    48.  
    49. CServer::CServer(QObject * parent) : QTcpServer(parent)
    50. {
    51.     m_PoolThreadsCount = 4;
    52. }
    53. //------------------------------------------------------------------------------------------------------------------------
    54.  
    55. void CServer::run(ushort port)
    56. {
    57.     bool bReturn = false;
    58.     // ----
    59.     static QString functionName = __FUNCTION__;
    60.     // ----
    61.     if(listen(QHostAddress::Any, port) == true)
    62.     {
    63.         onInfo(functionName, QString("Server is listening on port %0").arg(port));
    64.         // ----
    65.         bReturn = true;
    66.     }
    67.     else
    68.     {
    69.         onInfo(functionName, QString("The server can not run. port %0, %1").arg(port).arg(errorString()));
    70.     }
    71.     // ----
    72.     m_ThreadPoolMgr = new QThreadPool(this);
    73.     m_ThreadPoolMgr->setMaxThreadCount(m_PoolThreadsCount);
    74. }
    75. //------------------------------------------------------------------------------------------------------------------------
    76.  
    77. void CServer::onConnect(int handle)
    78. {
    79.     onInfo(__FUNCTION__, QString("new connection from handle %0").arg(handle));
    80. }
    81. //------------------------------------------------------------------------------------------------------------------------
    82.  
    83. void CServer::onDisconnect(int handle)
    84. {
    85.     onInfo(__FUNCTION__, QString("disconnection from handle %0").arg(handle));
    86. }
    87. //------------------------------------------------------------------------------------------------------------------------
    88.  
    89. void CServer::onRecv(int handle, QByteArray packet)
    90. {
    91.     onInfo(__FUNCTION__, QString("recv from handle %0").arg(handle));
    92. }
    93. //------------------------------------------------------------------------------------------------------------------------
    94.  
    95. void CServer::onError(QString function, QString message)
    96. {
    97.     printf("[%s][%s]\n", function.toStdString().c_str(), message.toStdString().c_str());
    98. }
    99. //------------------------------------------------------------------------------------------------------------------------
    100.  
    101. void CServer::onInfo(QString function, QString message)
    102. {
    103.     printf("[%s][%s]\n", function.toStdString().c_str(), message.toStdString().c_str());
    104. }
    105. //------------------------------------------------------------------------------------------------------------------------
    106.  
    107. void CServer::onWrong(QString function, QString message)
    108. {
    109.     printf("[%s][%s]\n", function.toStdString().c_str(), message.toStdString().c_str());
    110. }
    111. //------------------------------------------------------------------------------------------------------------------------
    112.  
    113. void CServer::incomingConnection(int handle)
    114. {
    115.     CClient * newClient = new CClient(this, handle);
    116.     // ----
    117.     newClient->run();
    118. }
    119. //------------------------------------------------------------------------------------------------------------------------
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    Header
    Qt Code: 
    1. //------------------------------------------------------------------------------------------------------------------------
    2. #ifndef TSERVER_H
    3. #define TSERVER_H
    4. //------------------------------------------------------------------------------------------------------------------------
    5.  
    6. #include <QString>
    7. #include <QDebug>
    8. #include <QTCPServer>
    9. #include <QTcpSocket>
    10. #include <QAbstractSocket>
    11. #include <QThreadPool>
    12. #include <QRunnable>
    13. //------------------------------------------------------------------------------------------------------------------------
    14.  
    15. #include <list>
    16. //------------------------------------------------------------------------------------------------------------------------
    17.  
    18. class CClient;
    19. class CServer;
    20. //------------------------------------------------------------------------------------------------------------------------
    21.  
    22. #define CLIENT_LIST std::list<CClient *>
    23. //------------------------------------------------------------------------------------------------------------------------
    24.  
    25. class CClient : public QObject
    26. {
    27.     Q_OBJECT
    28. private:
    29.     CServer *       m_parent;
    30.     QTcpSocket *    m_Socket;
    31.     int             m_Handle;
    32. public:
    33.     explicit        CClient             (CServer * parent, int handle);
    34.     // ----
    35.     void            run                 ();
    36. private slots:
    37.     void            disconnected        ();
    38.     void            readAble            ();
    39.     void dead();
    40. };
    41. //------------------------------------------------------------------------------------------------------------------------
    42.  
    43. class CServer : public QTcpServer
    44. {
    45.     Q_OBJECT
    46. private:
    47.     ushort          m_PoolThreadsCount;
    48.     QThreadPool  *  m_ThreadPoolMgr;
    49. public:
    50.     explicit        CServer             (QObject * parent = 0);
    51.     // ----
    52.     void            run                 (ushort port = 1234);
    53.     // ----
    54.     virtual void    onConnect           (int handle);
    55.     virtual void    onDisconnect        (int handle);
    56.     virtual void    onRecv              (int handle, QByteArray packet);
    57.     // ----
    58.     virtual void    onInfo              (QString function, QString message);
    59.     virtual void    onError             (QString function, QString message);
    60.     virtual void    onWrong             (QString function, QString message);
    61.     // ----
    62.     void inline     setPoolThreadsCount (ushort Count)  { m_PoolThreadsCount = Count; };
    63.     ushort inline   getPoolThreadsCount ()              { return m_PoolThreadsCount; };
    64. protected:
    65.     void            incomingConnection  (int handle);
    66.  
    67. };
    68. //------------------------------------------------------------------------------------------------------------------------
    69. #endif // TSERVER_H
    70. //------------------------------------------------------------------------------------------------------------------------
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    dead function in CCLient never called!
    thanks in advance
    Leo

    Added after 59 minutes:


    ok i fixed the problem using this :
    Qt Code: 
    1. void CClient::disconnected()
    2. {
    3.     m_parent->onDisconnect(m_Handle);
    4.     // ----
    5.     deleteLater();
    6.     m_Socket->deleteLater();
    7. }
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    Last edited by iNewLegend; 30th May 2011 at 18:36.
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