Optional: Real time priority warning.
This callback is fired when making thread real-time priority failed. By
default, it will print to stderr only the first time it is called
a message instructing the user how to configure their system to allow
real-time priority threads. This must be set to a function not NULL.
To silence the warning, assign this to a function that does nothing.
Optional: Real time priority warning. This callback is fired when making thread real-time priority failed. By default, it will print to stderr only the first time it is called a message instructing the user how to configure their system to allow real-time priority threads. This must be set to a function not NULL. To silence the warning, assign this to a function that does nothing.