Is std.experimental.logger FileLogger thread safe?

[Andre Pany via Digitalmars-d-learn]

Hi,

I am using the Arsd cgi class 
(https://github.com/adamdruppe/arsd) to spawn an http server. 
Each http request is handled in its own thread. Is it safe to set 
in void main a FileLogger to which each thread will write to?

void main()
{
...
sharedLog = new FileLogger("New_Default_Log_File.log");
...start server...
}

void handleRequest(Cgi request)
{
    // is executed in own thread
    log("abc");
}

If this works, also another question. Each http request is 
identified by a unique id.
It would be great if I could set per thread this value within the 
logger as custom tag.

The purpose is, whenever I log a message, this custom tag (The 
identifier of the http request) should be added to the log. I 
assume the current logger framework is not capable to do this?

Kind regards
André