这是一个打印线程，打印我当前正在运行的程序的统计信息
void StatThread::PrintStat(){
clock_t now = 0;
UINT64 oneMega = 1<<20;
const char* CUnique = 0;;
const char* CInserted = 0;;
while((BytesInserted<=fileSize.QuadPart)&&flag){
Sleep(1000);
now = clock();
CUnique = FormatNumber(nUnique);
CInserted = FormatNumber(nInserted);
printf("[ %.2f%%] %u / %u dup %.2f%% @ %.2fM/s %.2fMB/s %3.2f%% %uMB\n",
(double)BytesInserted*100/(fileSize.QuadPart),
nUnique,nInserted,(nInserted-nUnique)*100/(double)nInserted,
((double)nInserted/1000000)/((now - start)/(double)CLOCKS_PER_SEC),
((double)BytesInserted/oneMega)/((now - start)/(double)CLOCKS_PER_SEC),
cpu.GetCpuUtilization(NULL),cpu.GetProcessRAMUsage (true));
if(BytesInserted==fileSize.QuadPart)
flag=false;
}
delete[] CUnique; //would have worked with memory leak if commented out
delete[] CInserted; // crash at here! heap corruption
}
这是返回指向 char 数组的指针的 FormatNumber
const char* StatThread::FormatNumber(const UINT64& number) const{
char* result = new char[100];
result[0]='\0';
_i64toa_s(number,result,100,10);
DWORD nDigits = ceil(log10((double)number));
result[nDigits] = '\0';
if(nDigits>3){
DWORD nComma=0;
if(nDigits%3==0)
nComma = (nDigits/3) -1;
else
nComma = nDigits/3;
char* newResult = new char[nComma+nDigits+1];
newResult[nComma+nDigits]='\0';
for(DWORD i=1;i<=nComma+1;i++){
memcpy(newResult+strlen(newResult)-i*3-(i-1),result+strlen(result)-i*3,3);
if(i!=nComma+1){
*(newResult+strlen(newResult)-4*i) = ',';
}
}
delete[] result;
return newResult;
}
return result;
}
真正奇怪的是，由于堆损坏，它仅在发布模式下崩溃，但在调试模式下运行平稳。我已经到处检查了，没有发现明显的内存泄漏，甚至Memory Leak Detector也是这么说的。
Visual Leak Detector Version 2.2.3 installed.
The thread 0x958 has exited with code 0 (0x0).
No memory leaks detected.
Visual Leak Detector is now exiting.
The program '[5232] Caching.exe' has exited with code 0 (0x0).
但是，当在发布模式下运行时，它抛出了一个错误，说我的程序停止工作并且我点击了调试，它指向了导致堆损坏的行。
The thread 0xe4c has exited with code 0 (0x0).
Unhandled exception at 0x00000000770E6AE2 (ntdll.dll) in Caching.exe: 0xC0000374: A heap has been corrupted (parameters: 0x000000007715D430).
如果我注释掉这一行，它可以正常工作，但 Memory Leak Detector 会抱怨内存泄漏！我不明白在没有内存泄漏的情况下如何导致堆损坏（至少泄漏检测器是这么说的）。请帮助，提前谢谢。
编辑：堆损坏已修复，因为在最后一次迭代中，我仍然将 3 个字节复制到前面，而不是剩下的任何内容。谢谢大家的帮助！
const char* StatThread::FormatNumber(const UINT64& number) const{
char* result = new char[100];
result[0]='\0';
_ui64toa_s(number,result,100,10);
DWORD nDigits = (DWORD)ceil(log10((double)number));
if(number%10==0){
nDigits++;
}
result[nDigits] = '\0';
if(nDigits>3){
DWORD nComma=0;
if(nDigits%3==0)
nComma = (nDigits/3) -1;
else
nComma = nDigits/3;
char* newResult = new char[nComma+nDigits+1];
DWORD lenNewResult = nComma+nDigits;
DWORD lenResult = nDigits;
for(DWORD i=1;i<=nComma+1;i++){
if(i!=nComma+1){
memcpy(newResult+lenNewResult-4*i+1,result+lenResult-3*i,3);
*(newResult+lenNewResult-4*i) = ',';
}
else{
memcpy(newResult,result,lenNewResult-4*(i-1));
}
}
newResult[nComma+nDigits] = '\0';
delete[] result;
return newResult;
}
return result;
}