The semaphore is only used when Worker::start() is called to synchronize
the startup of the two threads. Also asserted that the state is what we
expected it to be.
This guarantees that the caller of the start function will know whether
the worker is running by looking at its state.
This will prevent multiple successive stop calls to a worker which
happened when the monitors were altered via the REST API.
In tests, the log can now be setup as
int main()
{
mxb::Log log;
...
}
That will initialize the log so that it logs to a file called
<program-name>.log in the current directory and finalize it
when the program exits.
If any part of initalization fails, no resources are held.
At finalization, release all resources.
Also re-implement recent changes made to log_manager.cc that
did not automatically move over to log.cc.
Basically a copy of maxscale/debug.h, but with some name changes.
- ss_dassert -> mxb_assert
- ss_info_dassert -> mxb_assert_message
- ss_debug -> MXB_AT_DEBUG
Almost a verbatim copy of log_manager.[h|cc] with mxs changed
to mxb. The changes allow the MaxScale log manager to be moved
on top of this implementation.
The current implementation of mxs_log_message() is otherwise
generic, but for the fact that the session id is automatically
injected into the message.
With this change, a mxs_log_init2() is introduced that in addition
to the existing parameters takes a function using which the context
can be provided. The implementation of mxs_log_init() now simply
calls mxs_log_init2() giving a function that provides the MaxScale
context.
This is in preparation for moving maxscale/log_manager.h to
maxbase/log.h.
SLES 15 doesn't have any sort of init functions which is why the error is
converted to a status message. A dummy file that just prints an error is
placed into /etc/init.d/ to make it clear to the users that they should
use systemd to start MaxScale.
The function should not be an inline function with a static variable. This
appears to cause problems on at least Debian Wheezy and is likely to cause
odd behavior on other platforms.
Also renamed the file to <maxbase/string.h> to better mirror how the
<string.h> file behaves.
