mutex cerr_mutex;
map<thread::id, int> thread_name_map;
int next_thread_num = 0;
-map<void *, int> instance_name_map;
+map<const void *, int> instance_name_map;
int next_instance_num = 0;
int DEBUG_LEVEL = 0;
+
+locked_ostream && _log_prefix(locked_ostream && f, const string & file, const string & func) {
+ auto thread = this_thread::get_id();
+ int tid = thread_name_map[thread];
+ if (tid==0)
+ tid = thread_name_map[thread] = ++next_thread_num;
+ auto utime = duration_cast<microseconds>(system_clock::now().time_since_epoch()).count() % 1000000000;
+ f << setfill('0') << dec << left << setw(9) << utime << " ";
+ f << setfill(' ') << log_thread_prefix << left << setw(2) << tid;
+ f << " " << setw(20) << file << " " << setw(18) << func;
+ return move(f);
+}
+
+locked_ostream && _log_member(locked_ostream && f, const void *ptr) {
+ int id = instance_name_map[ptr];
+ if (id == 0)
+ id = instance_name_map[ptr] = ++next_instance_num;
+ f << "#" << left << setw(2) << id << " ";
+ return move(f);
+}