Does Boost.Log support process forking?

No, currently Boost.Log does not support process forking (i.e. fork call in UNIX systems). There are several issues with process forking, for instance:

File sinks do not attempt to reopen log files or synchronize access to files between parent and child processes. The resulting output may be garbled.
File collectors do not expect several processes attempting to collect log files to the same target directory. This may result in spurious failures at log file rotation.
The current_process_id attribute value will not update in the child process.
In multithreaded applications, one can generally not guarantee that a thread is not executing some Boost.Log code while an other thread forks. Some Boost.Log resources may be left irreversibly locked or broken in the forked process. This reservation is not specific to Boost.Log, other libraries and even the application itself are susceptible to this problem.

There may be other issues as well. It seems unlikely that support for forking will be added to Boost.Log any time soon.

	Note
	This does not preclude the `fork`+`exec` sequence from working. As long as the forked process doesn't try to use any of Boost.Log code, the process should be able to call `exec` or a similar function to load and start another executable.

Boost C++ Libraries

Does Boost.Log support process forking?