pw_log_null is a pw_log backend that ignores all pw_log statements. The backend implements PW_LOG with an empty inline function. Using an empty function ensures that the arguments are evaluated and their types are correct. Since the function is inline in the header, the compiler will optimize out the function call.

This backend can be used to completely disable pw_log, which may be helpful in certain development situations (e.g. to avoid circular dependencies).


If you are concerned about the resource demands of logging, try tokenizing logs with pw_tokenizer and pw_log_tokenized instead of disabling logs completely. Tokenized logs provide exactly same information as plain text logs but use dramatically less resources.