Macro thread_extract_param 

macro_rules! thread_extract_param {
    ($param:expr, $t:ty) => { ... };
}

Extracts a typed parameter from an optional boxed Any reference.

This macro is used in thread/task entry points to safely extract and downcast parameters passed to the thread. It handles both the Option unwrapping and the type downcast, returning appropriate errors if either operation fails.

Parameters

• $param - An Option<Box<dyn Any>> containing the parameter
• $t - The type to downcast the parameter to

Returns

• A reference to the downcasted value of type $t
• Err(Error::NullPtr) - If the parameter is None
• Err(Error::InvalidType) - If the downcast fails

Examples

use osal_rs::thread_extract_param;
use osal_rs::utils::Result;
use core::any::Any;
 
struct TaskConfig {
    priority: u8,
    stack_size: usize,
}
 
fn task_entry(param: Option<Box<dyn Any>>) -> Result<()> {
    let config = thread_extract_param!(param, TaskConfig);
     
    println!("Priority: {}", config.priority);
    println!("Stack: {}", config.stack_size);
     
    Ok(())
}