记一个小bug

遇到一个小bug记录下来。

在ce上dll里采集两次读写网卡间的时间间隔数据，

  1 //头文件中的声明
  2 #define _TEST_IN_COMM_CYCLE_
  3 #define MAXLENBUF 131071
  4 
  5 //类定义中添加的部分
  6 #ifdef _TEST_IN_COMM_CYCLE_
  7     bool dumpfileflag;
  8     enum _IN_TEST_FLAG{_IN_MEASURE=1,_IN_DUMP=2,IN_NEXT_FILE=3};
  9     int dumpfileaxisflag;//
 10     unsigned int databufcnt;
 11     int vdatabuffer[MAXLENBUF+1];
 12     fstream commstream;
 13     int filecnt;
 14     LARGE_INTEGER litmpThreadProc;
 15     LONGLONG QPart1ThreadProc,QPart2ThreadProc;
 16     double dfMinus, dfFreq, dfTim;
 17 
 18 #endif
 19 
 20 //构造函数中的部分
 21 #ifdef _TEST_IN_COMM_CYCLE_
 22     QueryPerformanceFrequency(&litmpThreadProc);
 23     dfFreq = (double)litmpThreadProc.QuadPart;
 24     QPart1ThreadProc=QPart2ThreadProc=0;
 25     dumpfileflag=true;
 26     dumpfileaxisflag=10;
 27     databufcnt=0;
 28     QPart1ThreadProc=0,QPart2ThreadProc=0;
 29     memset(vdatabuffer,0,MAXLENBUF+1);
 30     filecnt=0;
 31     if(CreateDirectory(L"\\硬盘\\sampledata\\",NULL))
 32     {
 33         //创建文件夹
 34     }
 35 #endif
 36 
 37 //每次读写网口时的数据采集
 38 #ifdef _TEST_IN_COMM_CYCLE_
 39      QueryPerformanceCounter(&litmpThreadProc);
 40      QPart1ThreadProc=litmpThreadProc.QuadPart;
 41     //dumpfileaxisflag=1;
 42      if (!dumpfileflag)
 43      {
 44          goto skipprint;
 45      }
 46      switch(dumpfileaxisflag)
 47      {
 48      case 1://a 测时间
 49          if (databufcnt<MAXLENBUF)
 50          {    
 51              //vdatabufferx[databufcnt]=fabs(MachInfo.VelocityCommandX);
 52              vdatabuffer[databufcnt]=QPart1ThreadProc-QPart2ThreadProc;
 53              databufcnt++;        
 54          }
 55          if (databufcnt==MAXLENBUF)
 56          {
 57              dumpfileaxisflag=5;
 58              databufcnt=0;
 59          }
 60          break;
 61      case 5://dump file
 62          for (int i=0;i<MAXLENBUF;i++)
 63          {
 64              //tempvaldb=vdatabuffer[i]/dfFreq*1000000;
 65              //vdatabuffer[i]=0;
 66             //commstream<<(tempvaldb>15.0?tempvaldb-15.0:tempvaldb)<<"\n";
 67             commstream<<(vdatabuffer[i]/dfFreq*1000000)<<"\n";
 68          }
 69          dumpfileaxisflag=9;
 70          break;
 71      case 9:
 72          commstream.close();
 73          dumpfileaxisflag=0;
 74          //dumpfileflag=false;
 75          dumpfileaxisflag=10;
 76          break;
 77      case 10:
 78          {
 79              TCHAR tmpstr[30]={0};
 80              swprintf(tmpstr,L"\\硬盘\\sampledata\\cycle%d",filecnt);
 81              filecnt++;
 82              commstream.open(tmpstr,ios::out);
 83          }
 84          commstream.unsetf(ios::scientific);
 85          commstream.setf(ios::fixed);
 86          commstream.precision(20);
 87          dumpfileflag=true;
 88          dumpfileaxisflag=1;
 89      default:
 90          //databufcnt=0;
 91          break;
 92      }
 93  skipprint:
 94 #endif
 95     NIC_TxData(pCtrlBuf,ctrlBufLen);
 96 //    WriteFile(hAdapter,pCtrlBuf ,ctrlBufLen, &ReturnedBytes, 0);//下发控制数据
 97     do 
 98     {
 99 //        ReadFile(hAdapter, pRcvBuf, 1024, &ReturnedBytes, 0);
100         NIC_RxData();
101     } while (pRcvBuf[12] != 0x83 || pRcvBuf[13] != 0x82);
102 
103 #ifdef _TEST_IN_COMM_CYCLE_
104     QueryPerformanceCounter(&litmpThreadProc);
105     QPart2ThreadProc=litmpThreadProc.QuadPart;
106     ctrlBufLen = 17;
107 #endif

先说现象，每次调用到读写函数就异常退出，加断点发现是在case 10这个地方屏蔽掉就没事了，想了下发现最初文件名没那么长，写的是tmpstr[20],再用这么长的文件名，明显放不下 给冲掉了 哦，改成30 就over了

调程序要仔细！

posted on 2013-09-04 17:28  zhiying678  阅读(189)  评论(0)  编辑  收藏  举报

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