[−][src]Crate init_guard
INIT GUARD
The Init_Guard Crate provides a Synchronization Primitive, that can be used to guard against double initialization.
For this, the init_guard macro is exported. The init_guard macro creates a new module that contains everything needed for the init_guard.
The Module contains two public Methods, init() and has_init().
has_init()
The has_init function has the following definition:
fn has_init() -> bool
The has_init function returns true, if the init_guard was already initialized.
init()
The init function has the following definition:
fn init() -> Result<(),()>
The init function returns Ok, if the init_guard was succesfully initialized and Err, if it was already initialized before
Usage Example
init_guard!(HAS_LOGGER_INIT); // Create the init_guard fn init_logger() -> Result<(),String> { match HAS_LOGGER_INIT::init() { Ok(_) => {}, Err(_) => {return Err("Logger is already initialized!".to_string())} } // Everything after this is now safe from double initialization // Do your actual logger initialization here }
Macros
init_guard |