MFC中使用ACE程序已知的“内存泄漏”_mfc normal block at-优快云博客

本文探讨了在MFC应用程序中使用ACE库时遇到的内存泄漏问题。在仅调用ACE的初始化和结束函数，以及在结合使用TAO和OpenDDS时，编译器都给出了内存泄漏的提示。尽管在结束DDS参与者工厂时进行了正常回收，但内存dump信息仍然显示出内存泄漏的存在。文章深入分析了可能的原因并提出了相应的解决策略。

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1. MFC程序，链接ace.lib (不是acemfc.lib)，仅调用初始化 ACE::init()和结束ACE::fini()，编译器如下提示

{167} normal block at 0x0181B9C0, 6 bytes long.
 Data: <      > 00 00 00 00 00 00 
{166} normal block at 0x0181B968, 28 bytes long.
 Data: 
 
   68 B9 81 01 1C A9 23 10 00 00 00 00 00 00 00 00 
Object dump complete.

2. MFC程序，链接TAO,OpenDDS，同样只作初始化和结束操作，编译器显示如下提示

 Data: 
 
   49 6D 52 5F 43 6C 69 65 6E 74 5F 41 64 61 70 74 
{451} normal block at 0x0181C790, 20 bytes 
  long.
 Data: 
  
    4F 52 54 5F 41 64 61 70 74 65 72 5F 46 61 63 74 
{450} normal block at 0x01821FA0, 40 bytes 
   long.
 Data: <  #             > 1C A9 23 10 13 00 00 00 14 00 00 00 90 C7 81 01 
{180} normal block at 0x0181BE38, 8 bytes 
   long.
 Data: 
   
     55 4E 4B 4E 4F 57 4E 00 
{179} normal block at 0x0181BDD8, 30 bytes 
    long.
 Data: 
    
      49 44 4C 3A 6F 6D 67 2E 6F 72 67 2F 43 4F 52 42 
{167} normal block at 0x0181B9C0, 6 bytes 
     long.
 Data: <      > 00 00 00 00 00 00 
{166} normal block at 0x0181B968, 28 bytes 
     long.
 Data: 
     
       68 B9 81 01 1C A9 23 10 00 00 00 00 00 00 00 00 
Object dump complete.

3. MFC程序，初始化DDS参与考工厂，结束时正常回收，代码如下

int MyPublsher::init(int& argc, char *argv[])
{
    dpf_ = TheParticipantFactoryWithArgs (argc, argv);
    if (CORBA::is_nil (dpf_.in ()) )
    {
        ACE_ERROR((LM_ERROR,
            ACE_TEXT("ERROR - Create participant factory failed./n") ));
        return -1;
    }

    // Create participant
    dp_ = dpf_->create_participant (411,
        PARTICIPANT_QOS_DEFAULT,
        DDS::DomainParticipantListener::_nil ());
    if (CORBA::is_nil (dp_.in ()) )
    {
        ACE_ERROR((LM_ERROR,
            ACE_TEXT("ERROR - Create participant failed./n") ));
        return -1;
    }

    return 0;
}

int MyPublisher::fini()
{
    // Clean up the transport
    // Clean up all the entities in the participant
    dp_->delete_contained_entities ();

    // Clean up the participant
    dpf_->delete_participant (dp_.in ());

    TheTransportFactory->release ();

    // Clean up DDS
    TheServiceParticipant->shutdown ();
    return 0;
}

内存dump信息如下：

{2253} normal block at 0x0182DBB0, 44 bytes long.
 Data: <    @           > 00 00 00 00 40 09 1C 00 FF FF FF FF 00 00 00 00 
{2252} normal block at 0x01867F78, 28 bytes long.
 Data:  50 9C 15 00 FF FF FF FF 00 00 00 00 00 00 00 00 
{2190} normal block at 0x01874798, 60 bytes long.
 Data: <                > 00 00 00 00 00 00 00 00 A0 E8 83 01 00 00 00 00 
{2164} normal block at 0x01873010, 15 bytes long.
 Data: <    RST ;EI    > 14 01 0F 00 52 53 54 02 3B 45 49 AB 87 04 00 
{2163} normal block at 0x01872FC8, 8 bytes long.
 Data: <        > 00 00 00 00 01 00 00 00 
{2162} normal block at 0x01872F70, 24 bytes long.
 Data: < -           /  > 90 2D 81 00 08 00 00 00 08 00 00 00 C8 2F 87 01 
{2160} normal block at 0x01872EE0, 8 bytes long.
 Data: <        > 00 00 00 00 01 00 00 00 
{2159} normal block at 0x01872E98, 8 bytes long.
 Data: < .      > 98 2E 87 01 20 8A 86 01 
{2158} normal block at 0x01872E50, 8 bytes long.
 Data: 
  
    52 6F 6F 74 50 4F 41 00 
{2143} normal block at 0x01869160, 32768 bytes 
   long.
 Data: <  #           # > 1C A9 23 10 00 00 00 00 00 00 00 00 16 A3 23 10 
{2142} normal block at 0x018690C8, 88 bytes 
   long.
 Data: <                > B4 BF 81 00 00 00 00 00 00 00 00 00 0C BF 81 00 
{2141} normal block at 0x01869030, 88 bytes 
   long.
 Data: <                > A4 E5 81 00 00 00 00 00 00 00 00 00 FC E4 81 00 
{2140} normal block at 0x01868F98, 88 bytes 
   long.
 Data: < c           b  > 84 63 81 00 00 00 00 00 00 00 00 00 DC 62 81 00 
{2139} normal block at 0x01868F00, 88 bytes 
   long.
 Data: 
   
     4C 4F 81 00 01 00 00 00 00 00 00 00 A4 4E 81 00 
{2138} normal block at 0x01868E68, 88 bytes 
    long.
 Data: < X          /W  > 04 58 81 00 00 00 00 00 00 00 00 00 5C 57 81 00 
{2137} normal block at 0x01868DD0, 88 bytes 
    long.
 Data: < m           l  > 8C 6D 81 00 00 00 00 00 00 00 00 00 E4 6C 81 00 
{2136} normal block at 0x01868D38, 88 bytes 
    long.
 Data: <                > 9C F4 81 00 00 00 00 00 00 00 00 00 F4 F3 81 00 
{2135} normal block at 0x01868CD8, 32 bytes 
    long.
 Data: <    t           > F8 8C 86 01 74 8D 86 01 0C 8E 86 01 A4 8E 86 01 
{2134} normal block at 0x018687C0, 8 bytes 
    long.
 Data: 
    
      52 6F 6F 74 50 4F 41 00 
{2133} normal block at 0x01868A20, 632 bytes 
     long.
 Data: <          #     > 98 DB 81 00 EC DB 81 00 1C A9 23 10 07 00 00 00 
{2122} normal block at 0x018684B0, 16 bytes 
     long.
 Data: < "
                   > F4 22 00 00 AC 80 86 01 A0 DC 84 01 A0 DC 84 01 
{2121} normal block at 0x018683A0, 4 bytes 
     long.
 Data: <  j > A4 B9 6A 00 
{2120} normal block at 0x01868330, 48 bytes 
     long.
 Data: 
    
   
  
          > 70 B8 6A 00 F4 22 00 00 A8 81 85 01 01 CD CD CD 
{2119} normal block at 0x018682E8, 12 bytes long.
 Data: <` j         > 60 B8 6A 00 00 00 00 00 D8 99 83 01 
{2118} normal block at 0x01868188, 16 bytes long.
 Data: 
 50 B8 6A 00 00 00 00 00 A8 EB 83 01 D8 99 83 01 
{2117} normal block at 0x018682A0, 9 bytes long.
 Data: <10.0.0.8 > 31 30 2E 30 2E 30 2E 38 00 
{2116} normal block at 0x01868260, 4 bytes long.
 Data: <    > A0 82 86 01 
{2115} normal block at 0x01868200, 32 bytes long.
 Data: <    ( j         > 01 00 00 00 28 B8 6A 00 02 00 00 00 10 00 00 00 
{2113} normal block at 0x01868058, 240 bytes long.
 Data: <  j             > D8 B4 6A 00 CD CD CD CD 00 00 00 00 CD CD CD CD 
{2112} normal block at 0x01868018, 4 bytes long.
 Data: 
  
    58 80 86 01 
{2111} normal block at 0x01867FD0, 8 bytes 
   long.
 Data: <        > 18 80 86 01 01 00 00 00 
{2108} normal block at 0x01867D98, 8 bytes 
   long.
 Data: < }      > 98 7D 86 01 00 84 86