堆的 C++ 损坏

Question

我有一个简单的同步队列

 template <typename T>

    class SynchronisedQueue
    {
    public:

        void Enqueue(const T& data)
        {
            boost::unique_lock<boost::mutex> lock(queueMutex);
            dataQueue.push(data);
            conditionVariable.notify_one();
        } 

        T Dequeue()
        {
            boost::unique_lock<boost::mutex> lock(queueMutex);

            while (dataQueue.size()==0) 
            {
                conditionVariable.wait(lock);
            }

            T result=dataQueue.front(); dataQueue.pop();
            return result;
        } 


    private:

    std::queue<T> dataQueue;                        // Use STL queue to store data
boost::mutex queueMutex;                        // The mutex to synchronise on
boost::condition_variable conditionVariable;    // The condition to wait for
};

当我从队列中出队时，有时会损坏堆....

HEAP: Free Heap block ccb1080 modified at ccb13c0 after it was freed

调用堆栈是:

ntdll.dll!76fa5654()    
[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll] 
ntdll.dll!76f6a554()    
ntdll.dll!76f35a70()    
ntdll.dll!76fa5eff()    
ntdll.dll!76f6a3ba()    
ntdll.dll!76f35a70()    
msvcr90d.dll!_heap_alloc_base(unsigned int size=1222)  Line 105 + 0x28 bytes    C
msvcr90d.dll!_heap_alloc_dbg_impl(unsigned int nSize=1186, int nBlockUse=1, const char * szFileName=0x00000000, int nLine=0, int * errno_tmp=0x1310ee18)  Line 427 + 0x9 bytes  C++
msvcr90d.dll!_nh_malloc_dbg_impl(unsigned int nSize=1186, int nhFlag=0, int nBlockUse=1, const char * szFileName=0x00000000, int nLine=0, int * errno_tmp=0x1310ee18)  Line 239 + 0x19 bytes    C++
msvcr90d.dll!_nh_malloc_dbg(unsigned int nSize=1186, int nhFlag=0, int nBlockUse=1, const char * szFileName=0x00000000, int nLine=0)  Line 296 + 0x1d bytes C++
msvcr90d.dll!malloc(unsigned int nSize=1186)  Line 56 + 0x15 bytes  C++
msvcr90d.dll!operator new(unsigned int size=1186)  Line 59 + 0x9 bytes  C++
x.ax!std::_Allocate<unsigned char>(unsigned int _Count=1186, unsigned char * __formal=0x00000000)  Line 43 + 0x9 bytes  C++
ax.ax!std::allocator<unsigned char>::allocate(unsigned int _Count=1186)  Line 145 + 0xb bytes   C++
ax.ax!std::vector<unsigned char,std::allocator<unsigned char> >::_Buy(unsigned int _Capacity=1186)  Line 1110 + 0xf bytes   C++
ax.ax!std::vector<unsigned char,std::allocator<unsigned char> >::vector<unsigned char,std::allocator<unsigned char> >(const std::vector<unsigned char,std::allocator<unsigned char> > & _Right=[1186](83 'S',50 '2',54 '6',67 'C',162 '¢',4 '',0,0,108 'l',0,0,0,2 '',64 '@',0,0,6 '',14 '',64 '@',0,35 '#',2 '',147 '“',76 'L',114 'r',53 '5',0,0,54 '6',79 'O',78 'N',4 '',0,0,0,0,54 '6',79 'O',78 'N',4 '',0,0,0,0,255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',106 'j',4 '',0,0,0,0,0,1 '',65 'A',154 'š',3 '',1 '',176 '°',159 'Ÿ',255 'ÿ',240 'ğ',199 'Ç',...))  Line 501 + 0x11 bytes    C++
ax.ax!SynchronisedQueue<std::vector<unsigned char,std::allocator<unsigned char> > >::Dequeue()  Line 32 + 0xc bytes C++
ax.ax!PPin::FillBuffer(IMediaSample * pSample=0x0cadbea8)  Line 225 + 0x12 bytes    C++
ax.ax!PPin::DoBufferProcessingLoop()  Line 300 + 0x13 bytes C++
ax.ax!CSourceStream::ThreadProc()  + 0x13e bytes    
ax.ax!CAMThread::InitialThreadProc()  + 0x51 bytes  
kernel32.dll!753bed6c()     
ntdll.dll!76f4377b()    
ntdll.dll!76f4374e() 

What may cause this heap corruption? How to debug heap corruption errors? Any ideas...

更新:使用示例

// Enqueue
void GetVideoStreams( BYTE *pData)
{
 std::vector<BYTE> vecFrame(pData, pData + nLen/sizeof(pData[0]));
 IncomingFramesQueue.Enqueue(vecFrame);

}

//Dequeue
void ConsumeVideoStreams()
{

 vector<BYTE> data = IncomingFramesQueue.Dequeue();

}

Answer 1

如上所述 - 您的代码和您发布的堆栈跟踪显示正在进行一些内存分配。连同错误消息，我假设堆损坏发生在其他地方并且每次在出队时都会弹出，因为它使用大量内存来复制这些 vector 。

使用一些内存分析工具的评估版(例如 http://www.softwareverify.com/cpp-memory.php )来查找错误。市场上也有一些免费工具(最著名的是 Valgrind)，但我不知道有什么免费的适用于 Visual C++ 的好工具。

此外，您可以查看此帖子How to debug heap corruption errors?此处提供有关如何解决此错误的其他方法。

据我目前所见，错误不在您发布的代码中。如果您需要更多帮助，请提供一个包含错误的小型独立示例。

---

我刚找到一个可能值得一试的免费工具:Dr. Memory .我从 stackoverflow 得到了链接当然。