我有一个函数,我调用它一直运行到它应该返回但不返回的位置。如果我在函数的最后调出一些用于调试的东西,它会显示出来,但函数不会返回。C++函数不会返回
fetchData是我所指的功能。它被outputFile调用。 cout显示“在这里完成”,但不是“数据提取”
我知道这段代码很混乱,但任何人都可以帮我弄清楚这一点吗?
感谢
//Given an inode return all data of i_block data
char* fetchData(iNode tempInode){
char* data;
data = new char[tempInode.i_size];
this->currentInodeSize = tempInode.i_size;
//Loop through blocks to retrieve data
vector<unsigned int> i_blocks;
i_blocks.reserve(tempInode.i_blocks);
this->currentDataPosition = 0;
cout << "currentDataPosition set to 0" << std::endl;
cout << "i_blocks:" << tempInode.i_blocks << std::endl;
int i = 0;
for(i = 0; i < 12; i++){
if(tempInode.i_block[i] == 0)
break;
i_blocks.push_back(tempInode.i_block[i]);
}
appendIndirectData(tempInode.i_block[12], &i_blocks);
appendDoubleIndirectData(tempInode.i_block[13], &i_blocks);
appendTripleIndirectData(tempInode.i_block[14], &i_blocks);
//Loop through all the block addresses to get the actual data
for(i=0; i < i_blocks.size(); i++){
appendData(i_blocks[i], data);
}
cout << "done here" << std::endl;
return data;
}
void appendData(int block, char* data){
char* tempBuffer;
tempBuffer = new char[this->blockSize];
ifstream file (this->filename, std::ios::binary);
int entryLocation = block*this->blockSize;
file.seekg (entryLocation, ios::beg);
file.read(tempBuffer, this->blockSize);
//Append this block to data
for(int i=0; i < this->blockSize; i++){
data[this->currentDataPosition] = tempBuffer[i];
this->currentDataPosition++;
}
data[this->currentDataPosition] = '\0';
}
void outputFile(iNode file, string filename){
char* data;
cout << "File Transfer Started" << std::endl;
data = this->fetchData(file);
cout << "data fetched" << std::endl;
char *outputFile = (char*)filename.c_str();
ofstream myfile;
myfile.open (outputFile,ios::out|ios::binary);
int i = 0;
for(i=0; i < file.i_size; i++){
myfile << data[i];
}
myfile.close();
cout << "File Transfer Completed" << std::endl;
return;
}
你在做什么叫“printf'调试”,通常不推荐。你将需要使用一个实际的调试器。 此外,请缩减每个选项卡级别的多个空间。这是不可能读的...... – rlbond 2010-05-01 16:33:28
@rlbond几乎所有的调试我都是“printf调试” - 这种做法绝对没有错。 – 2010-05-01 16:34:58
Printf调试非常适用于确定常见的故障领域,但有关详细信息,调试器可以提供更多帮助。 – ssube 2010-05-01 16:39:35