Howard Hinnant <howard.hinnant <at> gmail.com> writes:
On Mar 14, 2011, at 11:39 PM, DesertFish wrote:
It looks like you are locking your structure in "read mode" and then writing
to it:
boost::shared_lock<boost::shared_mutex> lock(rwMutex); for(boost::unordered_set<int>::iterator it=tablePush[pair<string, string> (type, code)].begin();it!=tablePush[pair<string, string>(type, code)].end ();it++){ flag=true; des->push_back(*it); }
If you want to lock it in write mode do this:
boost::unique_lock<boost::shared_mutex> lock(rwMutex);
-Howard
Hi Howard, I just tested a simple case, which just lock the read lock and print out the result of tablePush.size(), like this: bool getFD(list<int> *des, char *type, char *code){ bool flag=false; boost::shared_lock<boost::shared_mutex> lock(rwMutex); cout<<tablePush[pair<string, string>(type, code)].size()<<endl; return flag; } but it still happens Segmentation Fault... could anyone know what's the problem is? Thank you