# Function log::set_logger_raw [−] [src]

    pub unsafe fn set_logger_raw<M>(make_logger: M) -> Result<(), SetLoggerError> where
        M: FnOnce(MaxLogLevelFilter) -> *const Log,

Sets the global logger from a raw pointer.

This function is similar to `set_logger` except that it is usable in `no_std` code.

The `make_logger` closure is passed a `MaxLogLevel` object, which the logger should use to keep the global maximum log level in sync with the highest log level that the logger will not ignore.

This function may only be called once in the lifetime of a program. Any log events that occur before the call to `set_logger_raw` completes will be ignored.

This function does not typically need to be called manually. Logger implementations should provide an initialization method that calls `set_logger_raw` internally.

# Safety

The pointer returned by `make_logger` must remain valid for the entire duration of the program or until `shutdown_logger_raw` is called. In addition, `shutdown_logger` must not be called after this function.

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