int IdPair::Primary::getUniqueId(const std::string &id) {
int found = -1;
{
while (++readers < 0) {
--readers;
while (readers < 0) {
}
}
IDMapType::iterator iter = idMap.find(id);
if (iter != idMap.end()) {
found = (*iter).second;
}
--readers;
}
if (found == -1) {
readers -= WRITER;
while (readers > -WRITER) {
}
// Can now safely add this to the map.
found = max_id;
assert(found == (int)idNames.size());
idMap.insert(IDMapType::value_type(id, found));
idNames.push_back(id);
max_id++;
readers += WRITER; // done.
}
return found;
}
int IdPair::Primary::getUniqueId(const std::string &id) {
IDMapType::iterator iter = idMap.find(id);
if (iter == idMap.end()) {
iter = idMap.insert(IDMapType::value_type(id, max_id)).first;
max_id++;
}
return (*iter).second;
}