麻烦优化一下下列C++代码 void PIN_FAST_ANALYSIS_CALL onRead(THREADID threadid, ADDRINT memoryAddr){
ThreadData* t = get_tls(threadid);
t->
readCounter++;
// get latest version value
of this memory location
map<ADDRINT, std
::pair<vector<UINT32>, std
::pair<THREADID, UINT32> > >
::iterator it = t->shadowRead.find(memoryAddr);
if (it != t->shadowRead.end()){ // if its in the thread's local memory
/*(implementation
of the last one value predictor)*/
// if it already exists. update the counter for the thread by 1
// for the location.
it->second.first[threadid]++;
} else {
// if hasn't been read by current thread before
//insert record into memoryMap
vector <UINT32> temp(8,0);
t->shadowRead[memoryAddr] = std
::make_pair(temp, std
::make_pair(0,0)); // insert pair
of vector and a
nother pair
t->shadowRead[memoryAddr].first[threadid] = 1;
}
// Get last write to memoryAddr and save order with read in execution log
PIN_GetLock(&writeLock, threadid + 1);
rdOps++;
unordered_map<ADDRINT, std
::pair<vector<std
::pair<THREADID, UINT32> > ,bool> >
::iterator itt = memoryMap.find(memoryAddr);
map<ADDRINT, std
::pair<vector<UINT32>, std
::pair<THREADID, UINT32> > >
::iterator ita = t->shadowRead.find(memoryAddr);
if ((itt != memoryMap.end()) && (itt->second.first.size() > 0) && (itt->second.first.back().first != t->tid) && (itt->second.first.back().first != ita->second.second.first && itt->second.first.back().second != ita->second.second.second)){ // optimize to weed out intra-thread dependencies on shared memory locations
//EXECUTION LOG FORMAT WRITE-READ
: WRITETHREAD WRITECOUNTER READ
trace
FileReads << itt->second.first.back().first << "," << itt->second.first.back().second << "," << t->tid << "," << t->
readCounter << endl;
}
PIN_ReleaseLock(&writeLock);
文章指出在使用samtools创建的.index文件为bai格式，但readCounter软件要求的是.bam.bai格式。因此，为了解决这个问题，需要重新运行samtools以生成正确后缀的.index文件，即.bam.bai，确保软件能正确识别。
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