Dumping threads' Log Data into Common buffer

Question

My program has different threads and one common logging thread will be running.

All my threads have to dump some logging data into a buffer in logging thread. The logging thread in-turn will write into log file once the buffer reaches some size.

How can i write into the common buffer without affecting the performance of the running threads.? I am thinking of some way without much overhead instead of using mutex or any other sync mechanisms.

Answer 1

You may find that the performance penalties of using a mutex are low enough that it's just not worth the hassle of trying to make a Multi-producer, single consumer queue. However this question asks about such things and there are a few suggestions provided.